Re: Can zLinux detect when files arrive in the virtual reader?

[David Kreuter]

Use a cms wakeup machine running vmutil that receives a reader file. When the 
reader pops wakeup sends a smsg to the Linux machine and transfers the file. 
Linux has a smsg interface to trap the smsg
Stick the rdr file Information in the smsg
I have the smsg Linux driver running to receive alerts from perfsvm and log them
A modern shop would look into IBM’s vm manager suite
David

From: Linux on 390 Port  on behalf of Alan Altmark 

Sent: Wednesday, August 31, 2022 5:35:19 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Can zLinux detect when files arrive in the virtual reader?

When a traditional channel-attached device transitions from not-ready to ready, 
an unsolicited DEVICE END I/O interrupt is raised. (UE indicates EOF on the 
reader.)  Similar for tape and 3270s.

But I don't think Linux generates a UDEV event for unsolicited DE.

Regards,
Alan

Alan Altmark
Senior Managing z/VM Consultant
IBM Technology Services
1 607 321 7556  (Mobile)
alan_altm...@us.ibm.com

> -Original Message-
> From: Linux on 390 Port  On Behalf Of Donald
> Russell
> Sent: Wednesday, August 31, 2022 4:47 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: [EXTERNAL] [LINUX-390] Can zLinux detect when files arrive in the
> virtual reader?
>
> Short of having some Linux script querying the virtual reader, is there a way
> Linux can detect when a file arrives and invoke a script?
>
> Sort of like incrond for file system events.
>
> The idea is from cms I could send a file to the Linux virtual reader and then
> Linux would process with vmur commands.
>
> How does CMS WAKE-UP do it? I assume when a. We file arrives there’s a.
> Unsolicited DE (Ready) interrupt that Linux currently ignores.
>
> Can I configure something with udev rules?
>
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Re: Moving LUNs using z/VM

[David Kreuter]

Hi Martha
I did this successfully some years back. Make the input a “full pack “ mini on 
edev link it read only to reduce stress.
Good luck
Dave

From: Linux on 390 Port  on behalf of Martha McConaghy 

Sent: Tuesday, April 5, 2022 5:34:22 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

OK, I want to make sure I am understanding it clearly.  Its an interesting 
idea, but I really can't afford to blow away the original disks, so want to be 
really sure.

The existing disks are used by the virtual machine by having LOADDEV statements 
in the directory for the vm and then IPLing the raddr of the NPIV port on the 
FC channel, i.e.:

LOADDEV PORT 500507630628D700
LOADDEV LUN 40014009
IPL 2000

Now, the idea is to define an EDEV to VM that points to the same LUN, as well 
as one that points to the new LUN on the DS8910.  Attach both edev devices to 
my machine and then use DDR to copy from the old one to the new one.  Very 
interesting idea.  As long as I don't try to write to the original LUN, define 
a minidisk on it, etc, it should be OK, in theory.  Has anyone ever tried this?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Rick Troth 

Sent: Tuesday, April 5, 2022 5:27 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

What I mean is:
define them even temporarily as EDEVs for the DDR and go for it.



On Tue, Apr 5, 2022, 17:25 Rick Troth  wrote:

> If they're defined as EDEVs then you can use DDR.
>
> FBA (EDEV or 3370, etc al) being fixed block, copying the whole disk will
> include the boot partition. (Partition tables are not really needed on
> fixed block disks, even laptop SSDs, but don't get me started.) Any
> "partition table", and all partitions, would be included in the DDR copy.
>
>
>
> On Tue, Apr 5, 2022, 17:19 Martha McConaghy 
> wrote:
>
>> I have a few RHEL servers that run on z/VM but boot off of a direct
>> attached SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I
>> need to move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way
>> that I could use VM to copy these LUNs to the new storage?   I was looking
>> at DDR, but wasn't sure if the FB-512 type would work for these.  They
>> aren't CMS format disks, obviously, so that isn't an option.  I'm trying to
>> avoid having to attach them to a Linux server to do the work, but will if
>> that is the only option.  Since these are boot volumes, I have to copy the
>> boot partition and boot record, not just the filesystems.  So, a physical
>> copy would be the best.
>>
>> Any ideas?
>>
>> Martha
>>
>>
>> Martha McConaghy
>>
>> Marist:  System Architect/Technical Lead
>>
>> SHARE Association:  Secretary
>>
>> Marist College IT
>>
>> Poughkeepsie, NY 12601
>>
>>
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Re: Linux guest stop responding

[David Kreuter]

Hi Victor -
Are these devices on FCP CHPIDs? I am seeing similar Linux failures (disabled 
wait PSWs without anything in logs, etc) but with different errors, usually
IFCCs and invalid sense codes. Perhaps you should open a PMR. My guess is the 
hardware is presenting phantoms.

CP typically recovers but somehow it punches Linux's lights out. But it's not 
killing all Linux machines. In my environment I'm thinking it's in flight I/O. 
That's just a guess.

David Kreuter


-Original Message-
From: Linux on 390 Port  On Behalf Of Victor Echavarry
Sent: September 25, 2018 3:28 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux guest stop responding

David:

>From the operator console

14:40:31 HCPERP601I  DASD  2A5D A CHANNEL CONTROL CHECK OCCURRED
14:40:31 HCPERP6303I SENSE =     
14:40:31 HCPERP6303I 2A000F00 40E0 
14:40:31 HCPERP6304I IRB = 05C24417  0004 8000
14:40:31 HCPERP6305I USERID = SYSTEM
14:40:31 HCPERP2216I CHANNEL PATH ID = INVALID
14:40:31 HCPERP2220I PHYSICAL CHANNEL PATH ID = INVALID
14:40:31 HCPERP601I  DASD  2AC5 A CHANNEL CONTROL CHECK OCCURRED
14:40:31 HCPERP6303I SENSE =     
14:40:31 HCPERP6303I 2A000F00 40E0 
14:40:31 HCPERP6304I IRB = 05C24417  0004 8000
14:40:31 HCPERP6305I USERID = SYSTEM
14:40:31 HCPERP2216I CHANNEL PATH ID = INVALID
14:40:31 HCPERP2220I PHYSICAL CHANNEL PATH ID = INVALID

The strange thing is the Channel path id = invalid

Regards,

Victor Echavarry 
System Programmer
Operating Systems


-Original Message-
From: Linux on 390 Port  On Behalf Of David Kreuter
Sent: Friday, September 21, 2018 1:41 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux guest stop responding


Hi Victor:
I see similar events from time to time always corresponding to phantom I/O IFCC 
and complaints about unknown sense. Did you check the VM OPERATOR log for I/O 
errors? There could be some interesting alerting in there.
Good luck,
David Kreuter

-Original Message-
From: Linux on 390 Port  On Behalf Of Victor Echavarry
Sent: September 21, 2018 10:40 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux guest stop responding

Mark:

Checking the other vm's I found two more guest at the same time, stops . I open 
an issue with IBM regarding this. Three are SLES 11 SP4 and one is with SLES 12 
SP3 those are running under z/VM 6.4. Our Unix team are checking the info you 
suggest.

Thanks,

Victor Echavarry 
System Programmer
Operating Systems


-Original Message-
From: Linux on 390 Port  On Behalf Of Mark Post
Sent: Friday, September 21, 2018 4:12 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux guest stop responding

>>> On 9/20/2018 at 09:23 PM, Victor Echavarry 
>>> 
wrote: 
> Today two linux guests stops responding. Both server are idle and 
> using less than 10% of cpu.
> 
> 
> Checking the console we found these message
> 
> 
> 1: HCPGSP2629I The virtual machine is placed in CP mode due to a SIGP 
> stop from CPU 00.
> 
> 00: HCPGIR450W CP entered; disabled wait PSW 00020001 8000 
> 
> 0010BF02
> 
> 
> 
> The VM, 6.4 was ok at the problem. We open an issue with IBM. Does 
> anyone see this before?

No, but you might gain some insight into what part of the Linux kernel that 
came from by looking at the /boot/System.map file that corresponds to the 
kernel you were running.  It's also possible that there are some messages in 
the system log/journal just prior to that error.


Mark Post

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Re: Linux guest stop responding

[David Kreuter]

Hi Victor:
I see similar events from time to time always corresponding to phantom I/O IFCC 
and complaints about unknown sense. Did you check the VM OPERATOR log for I/O 
errors? There could be some interesting alerting in there.
Good luck,
David Kreuter

-Original Message-
From: Linux on 390 Port  On Behalf Of Victor Echavarry
Sent: September 21, 2018 10:40 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux guest stop responding

Mark:

Checking the other vm's I found two more guest at the same time, stops . I open 
an issue with IBM regarding this. Three are SLES 11 SP4 and one is with SLES 12 
SP3 those are running under z/VM 6.4. Our Unix team are checking the info you 
suggest.

Thanks,

Victor Echavarry 
System Programmer
Operating Systems


-Original Message-
From: Linux on 390 Port  On Behalf Of Mark Post
Sent: Friday, September 21, 2018 4:12 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux guest stop responding

>>> On 9/20/2018 at 09:23 PM, Victor Echavarry 
>>> 
wrote: 
> Today two linux guests stops responding. Both server are idle and 
> using less than 10% of cpu.
> 
> 
> Checking the console we found these message
> 
> 
> 1: HCPGSP2629I The virtual machine is placed in CP mode due to a SIGP 
> stop from CPU 00.
> 
> 00: HCPGIR450W CP entered; disabled wait PSW 00020001 8000 
> 
> 0010BF02
> 
> 
> 
> The VM, 6.4 was ok at the problem. We open an issue with IBM. Does 
> anyone see this before?

No, but you might gain some insight into what part of the Linux kernel that 
came from by looking at the /boot/System.map file that corresponds to the 
kernel you were running.  It's also possible that there are some messages in 
the system log/journal just prior to that error.


Mark Post

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Re: Fwd: [Linux_adult_swim] The Linux Foundat ion Announces an Open Source Reference Hypervisor Project Designed for IoT Device

[David Kreuter]

Good luck!

⁣

On Mar 13, 2018, 16:54, at 16:54, Paul Flint  wrote:
>Dear David,
>
>In Sacramento about to give Visual Bash presentation to SHARE West...
>
>Wish me luck!
>
>Flint
>
>On Mar 13, 2018 3:36 PM, "Dave Jones"  wrote:
>
>
>
>---
>
>DAVID JONES | MANAGING DIRECTOR FOR ZSYSTEMS SERVICES | z/VM, Linux,
>and
>Cloud
> 703.237.7370 (Office) | 281.578.7544 (CELL)
>
>INFORMATION TECHNOLOGY COMPANY [1]
>
> Original Message 
>
>SUBJECT:
>  [Linux_adult_swim] The Linux Foundation Announces an Open
>Source
>Reference Hypervisor Project Designed for IoT Device
>
>DATE:
>03.13.2018 8:43 AM
>
>FROM:
>Kevin Cole 
>
>TO:
>   Adult Swim , HacDC Public
>Discussion 
>
>​https://www.prnewswire.com/news-releases/the-linux-
>foundation-announces-an-open-source-reference-hypervisor-
>project-designed-for-iot-device-development-300612829.html
>[3]
>
>prnewswire.com [3]
>
>THE LINUX FOUNDATION ANNOUNCES AN OPEN SOURCE REFERENCE HYPERVISOR
>PROJECT DESIGNED FOR IOT DEVICE
>
>The Linux Foundation
>
>7-8 minutes
>-
>
>PORTLAND, Ore., March 13, 2018 /PRNewswire-USNewswire/ -- Embedded
>Linux
>Conference – The Linux Foundation [4] today announced a new embedded
>reference hypervisor project called ACRN(tm) (pronounced "acorn"). With
>engineering and code contributions from Intel(R) Corporation, the
>hypervisor was built with real-time and safety-criticality in mind, and
>optimized to streamline embedded development. This project will provide
>a framework for industry leaders to build an open source embedded
>hypervisor specifically for the Internet of Things (IoT).
>
>ACRN is comprised of two main components: the hypervisor and its device
>model, complete with rich I/O mediators. Intel's experience and
>leadership in virtualization technology was key to the initial
>development of this hypervisor solution.
>
>"With project ACRN, embedded developers have a new, immediately
>available hypervisor option," said Jim Zemlin, executive director of
>The
>Linux Foundation. "ACRN's optimization for resource-constrained devices
>and focus on isolating safety-critical workloads and giving them
>priority make the project applicable across many IoT use cases. We're
>pleased to welcome project ACRN and invite embedded developers to get
>involved in the new community."
>
>Developers benefit from ACRN's small, real-time footprint, which is
>flexible enough to accommodate different uses and provides
>consideration
>for safety-critical workloads. Consolidating a diverse set of IoT
>workloads with mixed-criticality on to a single platform helps reduce
>both development and deployment costs allowing for a more streamlined
>system architecture. An example of this is the electronic control unit
>(ECU) consolidation in automotive applications. While open source
>hypervisor options are available today, none share ACRN's vision of an
>open source hypervisor solution optimized for embedded and IoT
>products.
>
>
>"ACRN will have a Linux-based service OS and the ability to
>simultaneously run multiple types of guest operating systems, providing
>a powerful solution for workload consolidation," said Imad Sousou,
>corporate vice president and general manager of the Open Source
>Technology Center, at Intel(R) Corporation. "This new project delivers
>a
>flexible, lightweight hypervisor, designed to take real-time and
>safety-critical concerns into consideration and drive meaningful
>innovation for the IoT space."
>
>ACRN will incorporate input from the open source, embedded, and IoT
>developer communities and encourages collaboration and code
>contributions to the project. Early ACRN project members include
>ADLINK(R), Aptiv(R), Intel(R) Corporation, LGE(R), and Neusoft(R)
>Corporation. To learn more about the project, visit
>https://www.projectacrn.org [5].
>
>SUPPORTING QUOTES
>
>"The lack of open source virtualization solutions for embedded,
>real-time, and safety-critical systems has been greatly hindering
>consolidation and to some extent the most interesting forms of fog
>computing," commented Angelo Corsaro, chief technology officer of
>ADLINK
>Technology Inc. "The release of ACRN as a Linux Foundation project by
>Intel will be a game changer as it brings the agility and manageability
>of virtualized environments into embedded and real-time systems. This
>will be a key enabler toward making the Industrial Internet of Things
>happen for real."
>
>"This approach from Intel fits very well within our product roadmap and
>is a welcomed approach that will meet our customers' desire to have
>more
>open source reference solutions," said Lee Bauer, vice president,
>Mobility Architecture Group of Aptiv. "Aptiv is excited to be a part of
>this new project, ACRN, and with it usher in a new era of 

Re: Reading VMLOGS files from Linux (cmsfs-fuse)

[David Kreuter]

Mark - 
It is the fm letter in use when the CMS RELEASE command was last done
from the writing virtual machine for new or changed files. On disk the
fm letter is meaningless while the fm number does have meaning and needs
preservation. 
David


 Original Message 
Subject: Re: Reading VMLOGS files from Linux (cmsfs-fuse)
From: Mark Post 
Date: Mon, May 23, 2016 1:28 pm
To: LINUX-390@VM.MARIST.EDU

>>> On 5/22/2016 at 07:22 PM, Mark Post wrote: 
> s390vsl204:~ # cmsfslst -f /dev/dasdg
> FILENAME FILETYPE FM FORMAT LRECL RECS BLOCKS DATE TIME
> DIRECTOR P0 F 64 8 1 5/04/2016 19:56:38
> ALLOCMAP P0 F 4096 2 2 5/04/2016 19:56:38
> FTPBOOT PARM B1 F 80 2 1 5/04/2016 18:07:40
> S11S2GM EXEC Z1 F 80 25 1 10/01/2012 6:23:36
> KAKKA2 EXEC Z1 F 80 25 1 10/01/2012 6:27:42
> KAKKA3 EXEC Z1 F 80 25 1 10/01/2012 6:28:18
> LINUX EXEC Z1 F 80 25 1 10/01/2012 6:27:00
> INITRAMF IMG B1 F 80 435159 8500 5/04/2016 19:56:38

I just noticed something unexpected in this output I posted yesterday.
How can files on one minidisk have different filemode letters? B1 _and_
Z1? For that matter, how can there be a letter associated at all, since
it's not being ACCESSed by CMS? I would suspect that cmsfslst is
assigning arbitrary values to things, but getfattr shows the same
values.


Mark Post

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Re: hipersockets

[David Kreuter]

Gregory: It does help. As a VSWITCH it can be protected by RACF hence
the VLANs can be RACF protected too.
Another advantage is that it uses only one hipersocket triplet whereas
dedicated hipersocket will end up using one triplet per Linux virtual.
You can even use the same hiper triplet on each LPAR.
There is a limit to how many LPARs can connect to the hiper. I've been
scalded by this a few times.
David


 Original Message 
Subject: Re: hipersockets
From: Grzegorz Powiedziuk 
Date: Fri, November 20, 2015 8:47 am
To: LINUX-390@VM.MARIST.EDU

Thanks Alan.
HiperSocket VSWITCH Bridge will not help when it comes to isolation,
right? Vswitch simply acts as a bridge for hipersocket network using
using
one of the real hipersocket devices as one of its own interfaces (bridge
port). Via this bridge Hipersocket network gets access to external
network
but doesn't give more control on who can talk to who inside of CEC, does
it?
thanks
Gregory



2015-11-20 0:47 GMT-05:00 Alan Altmark :

> On Thursday, 11/19/2015 at 08:35 GMT, Grzegorz Powiedziuk
>  wrote:
> > I thought about doing vswitch but then AFIK I would end up with with
> > virtual hipersockets on linux guest.
>
> Linux guests can use real HiperSockets with the HiperSocket VSWITCH bridge
> on z/VM. Their traffic will automatically be bridged to a physical LAN
> that can be accessed by z/OS. z/OS doesn't support the HiperSocket
> technology that would let it participate in a direct HiperSocket
> connection with the Linux guests on the bridge.
>
> Alan Altmark
>
> Senior Managing z/VM and Linux Consultant
> Lab Services System z Delivery Practice
> IBM Systems & Technology Group
> ibm.com/systems/services/labservices
> office: 607.429.3323
> mobile; 607.321.7556
> alan_altm...@us.ibm.com
> IBM Endicott
>
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Re: hipersockets

[David Kreuter]

Hi - I've done the hipersocket VLAN implementation. It works well and of
course Alan's comments are correct.

Another approach I've used is to create a VSWITCH on each LPAR using the
same set of OSAs. Now when you use VLANs on this VSWITCH RACF can be
involved for better protection.

OK won't be as fast as hipersocket but it doesn't go far out of the box
either.
David Kreuter 



 Original Message 
Subject: Re: hipersockets
From: Alan Altmark <alan_altm...@us.ibm.com>
Date: Thu, November 19, 2015 3:05 pm
To: LINUX-390@VM.MARIST.EDU

On Thursday, 11/19/2015 at 07:38 GMT, Grzegorz Powiedziuk 
<gpowiedz...@gmail.com> wrote:
> From what I've learned so far, In order to achieve this, we need to have 
a
> shared chpid between LPARS. Hipersockets on the same chpid can 
communicate
> with each other.

Hosts using the same VLAN on the same HiperSocket chpid can talk to each

other. There are no controls on the VLAN ID that a host is permitted to 
use, so from a security perspective, don't rely on HiperSocket VLAN 
controls.

> Ok, we've done that. We have defined a set of hipersockets on one chipd 
for
> every LPAR and it works. Linux in one LPAR can talk to another linux in
> different lpar.
:
> Do I need to have a separate chpid for every cluster? Doesn't really 
make
> sense, does it?
> Am I missing something?

It depends entirely on your security posture. If you need enforced 
isolation of each pair, then you need one chpid per pair.

Alan Altmark

Senior Managing z/VM and Linux Consultant
Lab Services System z Delivery Practice
IBM Systems & Technology Group
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
alan_altm...@us.ibm.com
IBM Endicott

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Re: Moving on

[David Kreuter]

Congratulations Mike!
We will need to reinstate a moving on list just for you.
David

div Original message /divdivFrom: Michael MacIsaac 
mike99...@gmail.com /divdivDate:08-17-2015  11:43  (GMT-04:00) 
/divdivTo: LINUX-390@VM.MARIST.EDU /divdivSubject: Moving on /divdiv
/divHello lists,

I have again started a new job, moving on from Innovation Data Processing
to ADP.

At Innovation, helping to roll out the FDRPASVM product that allows you to
migrate running Linux and z/VM systems to new DASD regardless of
manufacturer was a challenging and satisfying project.  However, most of
that work was winding down.

As ADP has a continually growing z/VM and Linux environment, they should
keep me busy for many years to come.  I look forward to this new role.

-Mike MacIsaac

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Re: RHEL Install zvm

[David Kreuter]

Does the response to a CP QUERY VSWITCH VSW1 ACCESS show the name of the
virtual machine you are installing in? LNXMAINT?

David Kreuter 


 Original Message 
Subject: Re: RHEL Install zvm
From: Dazzo, Matt mda...@pch.com
Date: Fri, June 05, 2015 12:09 pm
To: LINUX-390@VM.MARIST.EDU

There is a nicdef in my user direct in the linux default profile, below
is some info maybe someone might see my issue. I have tried many
variations in the CONF file but still no luck. LNXMAINT is being used
for now as the install id. Any help is really appreciated, Thanks Matt

system.config file. (define vswitch vsw1 rdev 090B)


PROFILE LNXDFLT 
 IPL CMS 
 MACHINE ESA 
 CPU 00 BASE 
 NICDEF 600 TYPE QDIO LAN SYSTEM VSW1 
* CAN UNCOMMENT ONCE A SECOND VSWITCH IS ADDED TO 
* ZVM SYSTEM CONFIG FILE 
* NICDEF 700 TYPE QDIO LAN SYSTEM VSW2 
 SPOOL 000C 2540 READER * 
 SPOOL 000D 2540 PUNCH A 
 SPOOL 000E 1403 A 
 CONSOLE 009 3215 T 
 LINK MAINT 0190 0190 RR 
 LINK MAINT 019D 019D RR 
 LINK MAINT 019E 019E RR 
 LINK MAINT 0402 0402 RR 
 LINK MAINT 0401 0401 RR 
 LINK LNXMAINT 192 191 RR 
 LINK TCPMAINT 592 592 RR 

USER LNXMAINT LNXMAINT 512M 512M BEG 
 INCLUDE TCPCMSU 
 INCLUDE LNXDFLT 
 OPTION APPLMON 
 LINK TCPMAINT 592 592 RR 
 MDISK 191 3390 0001 0020 LN44A9 MR READ WRITE MULTIPLE 
 MDISK 192 3390 0021 1500 LN44A9 MR READ WRITE MULTIPLE 

REDHAT CONF FILE

DASD=100-102 
HOSTNAME=zvm.rh6master.pch.com 
NETTYPE=qeth 
IPADDR=27.1.39.101 
SUBCHANNELS=0.0.0600,0.0.0601,0.0.0602
NETMASK=255.0.0.0 
SEARCHDNS=rh6master 
GATEWAY=27.1.1.5 
DNS= 
PORTNAME=any 
PORTNO=0 
LAYER2=1 
VSWITCH=vsw1 

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
Mark Post
Sent: Friday, June 05, 2015 10:57 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: RHEL Install zvm

 On 6/5/2015 at 10:45 AM, Dazzo, Matt mda...@pch.com wrote: 
 I am executing the redhat exec on zvm to install RHEL 6.6 and got the below 
 messages. I believe this relates back to my RHEL6.CONF file and the 
 subchannels line. When I autolog TCPIP 908,909,90A are the devices that are 
 started. This the device definition in my system.config file. (define vswitch 
 vsw1 rdev 090B). I can access vm with 3270 and I can connect via ftp. Any 
 help is appreciated.

What real devices your VSWITCH is using is completely irrelevant to any
of the guests that connect to it. For your guest, you need to have a
virtual NIC defined, either via a NICDEF in USER DIRECT for it, or via a
CP DEFINE NIC command in something like PROFILE EXEC. Whatever virtual
device numbers you use for the virtual NIC are what you specify in your
RHEL6.CONF file. (Note that each and every guest connecting to the
VSWITCH can use the exact same virtual device numbers, since they're not
real devices.)


Mark Post

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Re: Problems with SCSI-over-FCP after machine upgrade

[David Kreuter]

Hi Keith: Check the zoning and the NPIVs. The NPIVs presented to SVC
from the BC12 could have changed.
David Kreuter


 Original Message 
Subject: Problems with SCSI-over-FCP after machine upgrade
From: Keith Gooding kw...@yahoo.co.uk
Date: Thu, June 04, 2015 4:21 pm
To: LINUX-390@VM.MARIST.EDU

This may not be the proper forum but maybe someone can help.
 We have a small number of linux systems (32) under z/VM 6.3 which use
SCSI connections to LUNs on a SAN Volume Controller via a couple of IBM
SAN24B switches (the equivalent of Brocade 300). There are also some
systems which use EDEVs on the same SVC. This had worked on z10 BC for
about 5 years without problems.
 Last week the z10 was upgraded to a zBC12, retaining the same FICON
cards (4Gbs), but not necessarily associated with the same CHPIDs. Since
then a number of the LUN connections have been 'lost', cauing linux
systems to fail. SCSIDISC displays eg HCPRXS975I Virtual FCP device
1A05 ignored because the adapter was not able to connect to the fibre
channel network. It is then not possible to rebot the linux system.

Restarting 'everything' - ie SVC nodes, SAN switches, CHIPD vary off/on
-  cleared the problem for a while.
Any ideas where to start looking ?. I have discovered that we have  32
FCP subchannels defined on the CHPID (but highest used unit address is
1f, and there are only about a dozen in use). Also the switch has not
been 'qualified' for use on z12 (but it appears that it was not
qualified for z10 either).
Any advice greatly appreciated !
 

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Re: Single User mode Linux Guest

[David Kreuter]

Hi: sure ... just:
LOGON WHATEVER BY WHOMEVER NOIPL
if coming from LOGOFF state state you will be in CP READ and then can
issue a manual IPL.
NOIPL prevents the IPL directroy statement from firing.

Unless for some strange reason the virtual machine entry has:
COMMAND IPL something bla bla

David Kreuter

 Original Message 
Subject: Re: Single User mode Linux Guest
From: Jake anderson justmainfra...@gmail.com
Date: Thu, February 19, 2015 11:19 am
To: LINUX-390@VM.MARIST.EDU

Hi Marcy

Isn't there a way to stop the system getting ipled automatically when I
do
Logon linu by jake02?

So that I can specify ipl 201 clear parm 1
On 19 Feb 2015 21:44, Marcy Cortes marcy.d.cor...@wellsfargo.com
wrote:

 Yes, that's the case.
 You can do the link from another guest thing as Mike describes or boot a
 rescue system (your installation media).

 And put this in /etc/inittab if you want the behavior where it is not
 prompted:

 1:2345:respawn:/bin/bash -i




 -Original Message-
 From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
 Michael MacIsaac
 Sent: Thursday, February 19, 2015 8:06 AM
 To: LINUX-390@VM.MARIST.EDU
 Subject: Re: [LINUX-390] Single User mode Linux Guest

 Jake,

 Which Linux are you using?

 I tried on SLES, but could not get logged in as root without the password.
 In The Virt'n Cookbook section 26.1.1 Enter single user mode, it
 states:
 In single user mode, you are logged in as the root user.

 But this does not seem to be the case (who wrote that book? - somebody
 better fix it :))

 What I see is a prompt for the root password:

 INIT: Going single user
 INIT: Sending processes the TERM signal *Give root password* for
 maintenance (or type Control-D to continue):

 My next approach would be to link to the disk with the root file system
 R/W, mount it, and chroot to it. Do you have another Linux system you can
 use? Here's an example of modifying the root password on LINUX138 which as
 a 100 minidisk as the root file system (this virtual machine has OPTION
 LNKNOPAS so I am not prompted for the MR password on the LINK command):

 # *vmcp link linux138 100 1100 mr*
 # *chccwdev -e 1100*
 Setting device 0.0.1100 online
 Done
 # *lsdasd*
 Bus-ID Status Name Device Type BlkSz Size Blocks

 ==
 0.0.0100 active dasda 94:0 ECKD 4096 7042MB 1802880
 0.0.0101 active dasdb 94:4 ECKD 4096 7042MB 1802880
 0.0.*1100 *active *dasde *94:16 ECKD 4096 7042MB 1802880
 # *ls /mnt*
 # *mount /dev/dasde1 /mnt*
 # *chroot /mnt*
 # *passwd root*
 Changing password for user root.
 New password:
 BAD PASSWORD: The password is shorter than 8 characters Retype new
 password:
 passwd: all authentication tokens updated successfully.
 # *exit*
 # *umount /mnt*
 # *vmcp det 1100*
 DASD 1100 DETACHED
 HTH.

 -Mike

 On Thu, Feb 19, 2015 at 10:42 AM, Veencamp, Jonathon D. 
 jdveenc...@fedins.com wrote:

  And single user mode puts you right into root without password,
  because it's assumed if you control the console, then you must be ok.
  (control your consoles everyone!)
 
  Have I got that right?
 
  -Original Message-
  From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
  Bruce Hayden
  Sent: Thursday, February 19, 2015 9:39 AM
  To: LINUX-390@VM.MARIST.EDU
  Subject: Re: Single User mode Linux Guest
 
  Enter: passwd root
 
  root can change any password without knowing the existing one - even
  its own..
 
 
  
 
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  the personal and confidential use of the designated recipient(s) named
 above.
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Re: DirMaint disk pool available space

[David Kreuter]

Also DIRM DASD QUERY grpname
And friends should nail it down for you
IBM WAVE does it that way 
David Kreuter


 Original Message 
Subject: Re: DirMaint disk pool available space
From: Scott Rohling scott.rohl...@gmail.com
Date: Fri, June 6, 2014 9:56 am
To: LINUX-390@VM.MARIST.EDU

This also works for giving you the list of groups:

vmlink dirmaint 1df (i pipe file extent control .fm | inside /:GROUP/
/:END/ | nfind *|specs w1 1|sort unique|cons

Scott Rohling


On Fri, Jun 6, 2014 at 6:53 AM, Scott Rohling scott.rohl...@gmail.com
wrote:

 Not exactly what you want but close:

 DIRM FREE G= *

 This will list free space in groups/regions/volumes.   (or DIRM USED G= *)

 From that - you can determine the groups defined and issue:

 DIRM FREE G= groupfor each group to determine usage.. (or DIRM USED G=
 group)

 Note that there is a space between G=   and the * or group name

 Scott Rohling


 On Fri, Jun 6, 2014 at 6:45 AM, Mauro Souza thoriu...@gmail.com wrote:

 Hi guys,

 We installed xCAT and we are making some tests with it. We are creating
 some scripts to help us take care of our Linuxes. One of the thing we need
 to know about is the DirMaint disk pools.

 I am trying to get DirMaint tell me the available disk pools and the
 available disk space on a disk pool, but I could not find a way anywhere.

 There is any command to show that, or I will have to read the DIRMAINT
 files by hand (or script)?

 Mauro
 http://mauro.limeiratem.com - registered Linux User: 294521
 Scripture is both history, and a love letter from God.

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Re: Building a usable DVD

[David Kreuter]

hmm. What is the memory size of the LPAR? I had a weird situation a
while back where the LPAR memory was too large. If it is larger than
32Gb try setting it to below 32Gb.
Also have you tried a copy of the files and /CPDVD on a thumb drive?
David Kreuter


 Original Message 
Subject: Re: Building a usable DVD
From: Skip Robinson jo.skip.robin...@sce.com
Date: Wed, January 29, 2014 2:13 pm
To: LINUX-390@VM.MARIST.EDU

Pierre-Francois,

This sounds promising, but I do not know how to create an ISO file. In
ordering from ShopzSeries, ISO is one option, but it's deliverable only
on
an physical DVD. We are required by corporate policy to take delivery
electronically. For internet delivery, only the '3390' option can be
ordered. That comes as a zip file with 1200+ individual files. My DVD
burning software is the native Microsoft application included with (our
corporate version of) Windows 7. This creates the same set of files,
which
looks fine on my PC but seems to choke on HMC.

Two points others have mentioned. (1) I know that some DVD burning
software provides the option to 'close' the DVD or to allow for further
processing. My MS application does offer an option. (2) There is some
disagreement over the case of the base directory name. All the doc I've
seen clearly states uppercase /CPDVD, confirmed by Level 2 in my open
SR.



Hello,

I had the same problem just few days ago with z/VM 6.3. I burned several
dvd before it works.
When I created the dvd directly from the windows explorer it didn't works
(with ou without finsishing the dvd session).

The way it's works for me was to create an ISO containing the /cpdvd
direct=
ory, and then after burn the ISO to dvd.

pierre-francois.prot
.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
jo.skip.robin...@sce.com

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Re: High cpu utilization on vm/linux LPAR

[David Kreuter]

But ... what does 100% mean? 100%? latent demand to 101%? 110%? IFLs
going suspend?
David Kreuter

 Original Message 
Subject: Re: High cpu utilization on vm/linux LPAR
From: Mark Post mp...@suse.com
Date: Fri, January 10, 2014 1:26 pm
To: LINUX-390@VM.MARIST.EDU

 On 1/10/2014 at 11:00 AM, Victor Echavarry Diaz vechava...@evertecinc.com
wrote: 
 From a couple of days one of our Linux LPAR are continuously using 100% of 
 two cpu. We are on EC12 with z/VM SSI 6.2, two IFL's CPU's, 61440 MB of RAM, 
 4096 Extended RAM and the guest are running on SLES 11SP2. Do anyone has 
 similar problems or there is a kernel update for this issue.

Based on Barton's analysis of the data, it looks like this is just what
the workload is consuming, and not a problem. In general, running at
100% busy is _not_ a problem on System z, unless you're not meeting your
service level agreements with your customers. (Some people would envy
you getting the absolute maximum out of your hardware. 100% utilization
while meeting service levels is a _goal_ to them, not something to be
avoided.)


Mark Post

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Re: Bye-bye IBM

[David Kreuter]

Best of luck and congratulations  Mike! 
David Kreuter

 Original message 
From: Dave Jones d...@vsoft-software.com 
Date:12/30/2013  09:02  (GMT-05:00) 
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Bye-bye IBM 

Hi Mike. 

Sounds like you're starting 2014 with a bang.best of luck with the new 
position! Drop the list a note when you get settled in with your new contact 
info.

See you at the VM workshop. 

Have a good one, too. 

DJ


Sent from my Verizon Wireless 4G LTE Smartphone

 Original message 
From: Michael MacIsaac mike...@us.ibm.com 
Date: 12/30/2013  7:48 AM  (GMT-05:00) 
To: LINUX-390@VM.MARIST.EDU 
Subject: Bye-bye IBM 

Hello colleagues,

It is with some sadness and some anticipation that I will be leaving IBM
and joining Innovation Data Processing this week. Working in a small
company will probably be a better fit.  As well as my 27 years, this will
end nearly 55 consecutive, overlapping years of service to IBM by my Dad
and I.  I will miss many of my colleagues at IBM, but I'm leaving the
Company, not the Community. I hope to have quite a few more productive
years doing z/VM and Linux, which are perhaps the best virtualization (aka
Cloud)  technology available today. My goal will continue to be to help
enable you the customer to effectively and efficiently solve your business
needs.

Mike MacIsaac

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Re: defining zfcp devices on SLES11

[David Kreuter]

Certainly. There are ways in both Linux and CMS. I often do this in CMS
by attaching the FCP device and running SCSIDISC.
David Kreuter.


 Original Message 
Subject: defining zfcp devices on SLES11
From: Karl Kingston karlkings...@ongov.net
Date: Mon, December 09, 2013 1:57 pm
To: LINUX-390@VM.MARIST.EDU

We have an XIV connected to 2 switches which in turn is connected to our
z10 through 4 adapters.

We have defined 5 luns for use under SLES11SP2.

Right now, we are using YaST to define all of the connections. This
seems to be cumbersome.

Is there a way for us to to scan and define each lun without having to
do
this manually?

Thanks

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Re: LVM thin provisioning

[David Kreuter]

SFS does, sort of. The total number of blocks assigned to SFS users can
exceed the DASD allocated to the pool.
David Kreuter

 Original Message 
Subject: Re: LVM thin provisioning
From: Doug dsh...@bellsouth.net
Date: Thu, December 05, 2013 12:06 pm
To: LINUX-390@VM.MARIST.EDU

That would be an interesting addition to SFS
??

Sent from my iPhone

 On Dec 5, 2013, at 11:44, Offer Baruch offerbar...@gmail.com wrote:
 
 Hi ,
 
 I dont think there is any point in thin provisoning dasd...
 If you think about it the first thing you do to a dasd is dasdfmt...
 meaning dasd space will be all used up the minute you format the volume.
 
 There could be a nice feature for edevices... but most storage array aleady
 give you thin provisioning in the open world...
 
 Offer
 On Dec 5, 2013 6:23 PM, Tobias Doerkes tdoer...@hotmail.com wrote:
 
 Hi Marcy,
 
 this is a very interessting feature and i will check it out. But what i am
 really looking for is some kind of thin provisioning at the z/VM level. All
 other virtualisation products on the other platforms provide this feature.
 But on z/VM there is no way to overcommit DASD storage.
 
 Tobias.
 
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Re: sles11.2 mount logical volumes by path

[David Kreuter]

The 701 mdisk statement for the target newclone is incorrect. 
David Kreuter

 Original message 
From: Nix, Robert P. nix.rob...@mayo.edu 
Date: 12-04-2013  09:24  (GMT-05:00) 
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: sles11.2 mount logical volumes by path 
 
Actually, both entries are correct. The first minidisk on the volume is 500
cyl. The second starts at 501 and has 32259 cyl. I see nothing wrong with
this.

-- 
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507-284-0844 | nix.rob...@mayo.edu
Mayo Clinic| 200 First Street SW | Rochester, MN 55905
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On 12/3/13 5:27 PM, Scott Rohling scott.rohl...@gmail.com wrote:

 Yes - wasn't sure if you'd typo'd entering them or these were actually the
 directory entries..    if the latter - yep - you'll be missing 500 cyls on
 your LVM disks.
 
 Anyway - easy mistake ..   I assume the correct sizes will make it all work
 again  :)
 
 
 p.s.  your 202 should remain 32259 ..  it's got a 500 cylinder 191 disk in
 front of it (awful big disk!  we should talk about a common Linux guest 191
 .. you should not really need a r/w disk CMS disk for a Linux guest)
 
 Scott Rohling
 
 
 On Tue, Dec 3, 2013 at 1:24 PM, Dean, David (I/S) david_d...@bcbst.comwrote:
 
 Scott, I think you've got it, I will try tomorrow.  Look at the LVM DASD
 sizes, I made the same mistake again! Hard to put 6 gallons in a 5 gallon
 bucket.  I will let you know.
 
 -Original Message-
 From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
 Scott Rohling
 Sent: Tuesday, December 03, 2013 2:51 PM
 To: LINUX-390@VM.MARIST.EDU
 Subject: Re: sles11.2 mount logical volumes by path
 
 Is the clone directory entry a typo?   32259 instead of 32759 ?   Your gold
 image also uses 32259 for the 202 disk.. so a little confusing in the
 numbers between the 2 directory entries -- I didn't notice this at first
 glance..
 
 From what you list - your sizes don't match - but I would think the
 DDR/FLASHCOPY would fail or at least complain if those are the actual
 values you're using..
 
 Scott Rohling
 
 
 On Tue, Dec 3, 2013 at 9:28 AM, Dean, David (I/S) david_d...@bcbst.com
 wrote:
 
 REFERENCE DASD IN STRING BELOW
 
 New Clone
 Three blank DASD
 
 Cpfmtxa BA4d
 Format
 000 end
 Label   l12501
 
 Cpfmtxa BB50
 Format
 000 end
 Label   l12502
 
 Cpfmtxa BC4A
 Format
 000 end
 Label   l12503
 
 FLASHCOPY C74D 000 END BA4D 000 END SAVELABEL FLASHCOPY C650 000 END
 BB50 000 END SAVELABEL FLASHCOPY C651 000 END BC4A 000 END SAVELABEL
 
 GOLD IMAGE USER DIR
 
 USER LNXGLD X 1024M 1024M
  INCLUDE LINDFLT
  MDISK 191 3390 0001 0500 LGLD01 MR READ WRITE MULTIPLE  MDISK 202
 3390 0501 32259 LGLD01 MR READ WRITE MULTIPLE  MDISK 700 3390 0001
 32759 LGLD02 MR READ WRITE MULTIPLE  MDISK 701 3390 0001 32759 LGLD03
 MR READ WRITE MULTIPLE
 
 NEW CLONE USER DIR
 
 USER LNX125 X 1024M 1024M
  INCLUDE LINDFLT
  MDISK 191 3390 0001 0500 L12501 MR READ WRITE MULTIPLE  MDISK 202
 3390 0501 32259 L12501 MR READ WRITE MULTIPLE  MDISK 700 3390 0001
 32259 L12502 MR READ WRITE MULTIPLE  MDISK 701 3390 0001 32259 L12503
 MR READ WRITE MULTIPLE
 
 
 AFTER THE FLASHCOPY (OR DDR) I BRING UP THE NEW CLONE, LOGIN IN,
 CHANGE IP INFO, AND I AM DONE.
 
 lnxgld:/ # pvdisplay
   --- Physical volume ---
   PV Name   /dev/dasdc1
   VG Name   vg1
   PV Size   22.49 GiB / not usable 1.36 MiB
   Allocatable   yes (but full)
   PE Size   4.00 MiB
   Total PE  5757
   Free PE   0
   Allocated PE  5757
   PV UUID   EFMyi9-pjxQ-vGwt-ieZI-CcgA-Sp5A-2LXrF0
 
   --- Physical volume ---
   PV Name   /dev/dasdb1
   VG Name   vg1
   PV Size   22.49 GiB / not usable 1.36 MiB
   Allocatable   yes (but full)
   PE Size   4.00 MiB
   Total PE  5757
   Free PE   0
   Allocated PE  5757
   PV UUID   uEiwua-aooC-XYIY-GH8b-BQVV-Nfi3-Gm9vzx
 
 nxgld:/ # lvdisplay
   --- Logical volume ---
   LV Name    /dev/vg1/lv1
   VG Name    vg1
   LV UUID    fJ0chp-pW7a-bTdq-peCs-TmD2-ILHc-pJAydj
   LV Write Access    read/write
   LV Status  available
   # open 1
   LV Size    44.98 GiB
   Current LE 11514
   Segments   2
   Allocation inherit
   Read ahead sectors auto
   - currently set to 1024
   Block device   253:0
 
 lnxgld:/ # vgdisplay
   --- Volume group ---
   VG Name   vg1
   System ID
   Format    lvm2
   Metadata Areas    2
   Metadata Sequence No  2
   VG Access read/write
   VG Status resizable
   MAX LV    0
   Cur LV    1
   Open LV   1
   Max PV

Re: sles11.2 mount logical volumes by path

[David Kreuter]

The flashing is done as full volumes starting at cylinder 0.  
David Kreuter

 Original message 
From: Scott Rohling scott.rohl...@gmail.com 
Date: 12-03-2013  14:51  (GMT-05:00) 
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: sles11.2 mount logical volumes by path 
 
Is the clone directory entry a typo?   32259 instead of 32759 ?   Your gold
image also uses 32259 for the 202 disk.. so a little confusing in the
numbers between the 2 directory entries -- I didn't notice this at first
glance..

From what you list - your sizes don't match - but I would think the
DDR/FLASHCOPY would fail or at least complain if those are the actual
values you're using..

Scott Rohling


On Tue, Dec 3, 2013 at 9:28 AM, Dean, David (I/S) david_d...@bcbst.comwrote:

 REFERENCE DASD IN STRING BELOW

 New Clone
 Three blank DASD

 Cpfmtxa BA4d
 Format
 000 end
 Label   l12501

 Cpfmtxa BB50
 Format
 000 end
 Label   l12502

 Cpfmtxa BC4A
 Format
 000 end
 Label   l12503

 FLASHCOPY C74D 000 END BA4D 000 END SAVELABEL
 FLASHCOPY C650 000 END BB50 000 END SAVELABEL
 FLASHCOPY C651 000 END BC4A 000 END SAVELABEL

 GOLD IMAGE USER DIR

 USER LNXGLD X 1024M 1024M
  INCLUDE LINDFLT
  MDISK 191 3390 0001 0500 LGLD01 MR READ WRITE MULTIPLE
  MDISK 202 3390 0501 32259 LGLD01 MR READ WRITE MULTIPLE
  MDISK 700 3390 0001 32759 LGLD02 MR READ WRITE MULTIPLE
  MDISK 701 3390 0001 32759 LGLD03 MR READ WRITE MULTIPLE

 NEW CLONE USER DIR

 USER LNX125 X 1024M 1024M
  INCLUDE LINDFLT
  MDISK 191 3390 0001 0500 L12501 MR READ WRITE MULTIPLE
  MDISK 202 3390 0501 32259 L12501 MR READ WRITE MULTIPLE
  MDISK 700 3390 0001 32259 L12502 MR READ WRITE MULTIPLE
  MDISK 701 3390 0001 32259 L12503 MR READ WRITE MULTIPLE


 AFTER THE FLASHCOPY (OR DDR) I BRING UP THE NEW CLONE, LOGIN IN, CHANGE
 IP INFO, AND I AM DONE.

 lnxgld:/ # pvdisplay
   --- Physical volume ---
   PV Name   /dev/dasdc1
   VG Name   vg1
   PV Size   22.49 GiB / not usable 1.36 MiB
   Allocatable   yes (but full)
   PE Size   4.00 MiB
   Total PE  5757
   Free PE   0
   Allocated PE  5757
   PV UUID   EFMyi9-pjxQ-vGwt-ieZI-CcgA-Sp5A-2LXrF0

   --- Physical volume ---
   PV Name   /dev/dasdb1
   VG Name   vg1
   PV Size   22.49 GiB / not usable 1.36 MiB
   Allocatable   yes (but full)
   PE Size   4.00 MiB
   Total PE  5757
   Free PE   0
   Allocated PE  5757
   PV UUID   uEiwua-aooC-XYIY-GH8b-BQVV-Nfi3-Gm9vzx

 nxgld:/ # lvdisplay
   --- Logical volume ---
   LV Name    /dev/vg1/lv1
   VG Name    vg1
   LV UUID    fJ0chp-pW7a-bTdq-peCs-TmD2-ILHc-pJAydj
   LV Write Access    read/write
   LV Status  available
   # open 1
   LV Size    44.98 GiB
   Current LE 11514
   Segments   2
   Allocation inherit
   Read ahead sectors auto
   - currently set to 1024
   Block device   253:0

 lnxgld:/ # vgdisplay
   --- Volume group ---
   VG Name   vg1
   System ID
   Format    lvm2
   Metadata Areas    2
   Metadata Sequence No  2
   VG Access read/write
   VG Status resizable
   MAX LV    0
   Cur LV    1
   Open LV   1
   Max PV    0
   Cur PV    2
   Act PV    2
   VG Size   44.98 GiB
   PE Size   4.00 MiB
   Total PE  11514
   Alloc PE / Size   11514 / 44.98 GiB
   Free  PE / Size   0 / 0
   VG UUID   l9PjbN-u8Ai-8BxO-d3sf-6KAM-htkA-uIf72w





 -Original Message-
 From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
 Scott Rohling
 Sent: Tuesday, December 03, 2013 10:56 AM
 To: LINUX-390@VM.MARIST.EDU
 Subject: Re: sles11.2 mount logical volumes by path

 Since it looks like you're DDRing a whole DASD rather then a minidisk --
  are you relabelling, etc?    I'm confused from your example what you're
 cloning and how..  Can you show us the directory entry?

 Scott Rohling


 On Tue, Dec 3, 2013 at 7:20 AM, Dean, David (I/S) david_d...@bcbst.com
 wrote:

  Ouch, you are right, I cut and pasted the wrong line.  It should have
  been the /dev/vg1/lv1, sorry about that.  However the problem is that
  in the past we just DDR'd or flashcopied only the three DASD we use
  and everything worked, has this changed, or am I just missing something?
 
  Example (I hope  this formats right)
 
  DASD  gold    DASD new clone
 
  C74d    -- BA4D
  191
  202 OS
 
  C650    LVM -- BB50
  C651    LVM -- BC4A
 
 
  Maybe I should not have attended college in the 70's..?
 
 
 
  -Original Message-
  From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf

Re: file corruption on RHEL 5.8

[David Kreuter]

In addition to checking for MDISK overlays within this LPAR are the DASD
devices shared with another z/VM LPAR running Linux guests?
David Kreuter


 Original Message 
Subject: Re: file corruption on RHEL 5.8
From: Donald Russell russell@gmail.com
Date: Thu, October 03, 2013 1:20 pm
To: LINUX-390@VM.MARIST.EDU

On Thu, Oct 3, 2013 at 2:34 AM, Rob van der Heij rvdh...@gmail.com
wrote:

 On Wed, Oct 2, 2013 at 7:17 PM, Donald Russell russell@gmail.com
 wrote:

 
  In the case I'm currently working on, a .so file (binary) has a chunk
 of
  plain text in the middle of it. The chunk is 4K bytes long, and is a
  piece of a program listing. 4K is the block size of the underlying DASD.
 
  I am now in the process of trying to find when this happened by restoring
  backup copies and seeing if I can narrow the time frame down.
 

 Was either or both of these files supposed to be written? The .so file
 would be written only when you install the package. If the .so was not
 written, the origin of the text might point to the cause. And what's
 underneath; is it a plain device or is there LVM or md in between?


​Both files are expected to be written, not necessarily at the same
time.
The listing piece is not associated with the .so file.
​


 Since you mention journaling errors, did you have fsck repair things that
 could actually have created this? (we've seen that in the past with fsck on
 ReiserFS disks). The minidisk isn't R/O, is it? I think that has been
 fixed now, but initially we had problems where Linux eventually would drop
 dirty blocks when it couldn't write them to disk.


​The journaling errors were from a long time ago, and yes, we ran fsck
-y
to fix all the errors. Are you saying that fsck -y (or answering y to an
individual prompt) may cause file corruption that looks like this? That
would explain why a single block of data gets replaced in the middle of
a
file.
​


 Can you DDR the minidisk to another place and link thata in another Linux
 guest? That way you can run fsck as you like.


​Yes, we take the system down weekly to do a DDR backup to another
complete
set of DASD... I can bring that DDR copy up in single user mode. (We
also
use a linux backup utility to take daily backups.)

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Re: Where does Linux store path information for dasd devices?

[David Kreuter]

Perhaps the UUID' s of the DASD got changed or mangled  at the CP level? 
David Kreuter

 Original message 
From: Rick Barlow rrhbar...@gmail.com 
Date:  
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Where does Linux store path information for dasd devices? 
 
That is what I thought too.  However, some guests are having issues.  Some
parts of lvm groups switched to r/o.  Some page errors.  It is not
consistent.  I'm confused!

Rick Barlow
Nationwide


On Mon, Jul 8, 2013 at 11:34 PM, Scott Rohling scott.rohl...@gmail.comwrote:

 I would think this would be transparent to a guest  it's path will be
 the minidisk ..  which won't change - unless I misunderstand what you mean
 by switches.  Are you presenting the DASD as minidisks, or attaching them?
 Either way I don't see the pathing changing at the Linux level.

 Scott Rohling


 On Mon, Jul 8, 2013 at 8:12 PM, Rick Barlow rrhbar...@gmail.com wrote:

  I have many Linux guests running on z/VM.  We are in the process of
  migrating ECKD DASD from old switches to new switches.  I am trying to
 find
  out how Linux stores the paths information, how to display what Linux
  thinks and whether there is a way to tell Linux to re-validate its path
  information.
 
  Thanks,
  Rick Barlow


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Re: REXX mod

[David Kreuter]

I recall from years gone by that z/OS will issue a DIAGNOSE code when
running under z/VM and fetch the real CPU serial number. So the handy CP
SET CPUID won't fool any vendor nim wads. Some of the vendors got bent
out of shape with the notion of changing a z/OS CPUID so the DIAG
instruction included a function code to always return real system info.
DIAG function '218'x.

Not that I am advocating this (perish the thought) but at IPL time in
the virtual machine you could TRACE DIAG 218 and store your desired
values into the buffer it returns.

David Kreuter

 Original Message 
Subject: Re: REXX mod
From: Ron Wells ron.we...@slfs.com
Date: Wed, June 26, 2013 4:14 pm
To: LINUX-390@VM.MARIST.EDU

NUTSwas looking at renting time on a Machine that has VM ... 
slice...for DR...hoping to get around having to always get Auth codes
when 
we do this...not an easy process on couple of vendors..nim-wads



From: Dave Jones d...@vsoft-software.com
To: LINUX-390@VM.MARIST.EDU
Date: 06/26/2013 03:12 PM
Subject: Re: REXX mod
Sent by: Linux on 390 Port LINUX-390@VM.MARIST.EDU



Hello, Ron.

It can be used to change the serial number for that v.m. guest but not
the hardware model number.

DJ

On 06/26/2013 03:05 PM, Ron Wells wrote:
 so---not being vm person-- it can be done to change ser num and model 
for
 that image I may run..??




 From: Mark Pace pacemainl...@gmail.com
 To: LINUX-390@VM.MARIST.EDU
 Date: 06/26/2013 02:52 PM
 Subject: Re: REXX mod
 Sent by: Linux on 390 Port LINUX-390@VM.MARIST.EDU



 In the directory entry for the guest you can specify the CPUID. See the
 CP
 Planning and Administration Guide

 CPU cpuaddr BASE CPUID bb

 CPUID bb
 provides the processor identification number to be stored in bits 8
 through
 31 of
 the CPU ID that is returned in response to the store processor ID 
(STIDP)
 instruction. If the guest is relocated, these bits do not change as a
 result of the
 relocation, even if the FORCE ARCHITECTURE or FORCE DOMAIN options
 were used on the VMRELOCATE command.
 The variable bb is a 6-digit hexadecimal number. (No checking is 
done
 to
 ensure that this number is unique in the virtual configuration.) For 
base
 processors, this option overrides the CPUID operand on the OPTION
 statement. For nonbase processors, it overrides the CPU ID of the base
 CPU.


 On Wed, Jun 26, 2013 at 3:41 PM, Ron Wells ron.we...@slfs.com wrote:

 Do not know if this is place to ask
 Is there a way to tell VM that I am going to run a image(Linux or zos)
 under a different machine/serial/model # than what I am really on??

 looking at doing it for a DR possibility where it is a PAIN to get auth
 codes..

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--
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V/Soft Software
www.vsoft-software.com
Houston, TX
281.578.7544

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Re: Anyone running z/Linux natively and not under z/VM?

[David Kreuter]

It runs full on dat ON.
David Kreuter

 Original message 
From: David L. Craig d...@radix.net 
Date:  
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Anyone running z/Linux natively and not under z/VM? 
 
On 13May28:2000+, Pesce, Andy wrote:

 Just a curiosity question:
 Is anyone running Red Hat or SUSE natively in its own LPAR without having 
 z/VM?
 I know that under z/VM you can run multiple LINUX images.  It is also very 
 easy
 to clone systems.  However, just wondering if there are clients out there that
 only want to run one LINUX system.  So, they are not spending the money to
 get z/VM and installing it.  Any response would be appreciated.

IIRC, zLinux kernels run with DAT off; indeed, BC, whether real
or virtual.  Am I remembering correctly, and if so, is this
still the state of the art?  And if it is still so, why isn't
anybody playing with it--is it just not worth the effort?
--
not cent from sell
May the LORD God bless you exceedingly abundantly!

Dave_Craig__
So the universe is not quite as you thought it was.
You'd better rearrange your beliefs, then.
Because you certainly can't rearrange the universe.
__--from_Nightfall_by_Asimov/Silverberg_

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Re: Hipersockets broke Ethernet?

[David Kreuter]

How are 7000-7002 defined? Seeing the directory entry would be useful too. An 
error is happening before the ipl moment. 
David Kreuter

 Original message 
From: Mark Post mp...@suse.com 
Date:  
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Hipersockets broke Ethernet? 
 
 On 2/26/2013 at 06:08 PM, Chase, John jch...@ussco.com wrote: 
-snip- 
 Tried an interactive IPL and startup of the Linux vm, and saw some error 
 messages that indicate we've got some misteaks [sic] in the definitions of 
 the hipersockets virtual devices (but after the guest is started, ifconfig 
 shows only the hipersockets interface as active).
 
 Here's the VM logon of the guest:
 
 LOGON AT 15:40:29 CST TUESDAY 02/26/13   
 Command complete 
 NIC 0600 is created; devices 0600-0602 defined    
 NIC 0600 is connected to VSWITCH SYSTEM VMBSW1   
 HCPNIC2781E NIC 7000 not created; network devices 7000-7002 could not be 
 defined
 z/VM V6.2.0    2013-02-04 13:33
 
 Vdevs 7000-7002 are for the hipersockets interface.  The NIC at vaddr 600 is 
 the Ethernet interface that previously worked just fine.
 
 Here's the part of the Linux console log pertaining to qeth:
 
 qeth: loading core functions 
 vmur: z/VM virtual unit record device driver loaded. 
 NET: Registered protocol family 10   
 lo: Disabled Privacy Extensions  
 qeth: register layer 3 discipline

This line, and the line 2 down is interesting.  It looks like the NIC is trying 
to be both Layer 3 and Layer 2.  Which is it _supposed_ to be?

 qdio: 0.0.7002 HS on SC 2 using AI:1 QEBSM:1 PCI:0 TDD:1 SIGA:RW AO  
 qeth: register layer 2 discipline 

What all does the ifcfg-eth0 file have in it?

 qeth 0.0.0600: The qeth device is not configured for the OSI layer required 
 by z
 /VM  
 qeth 0.0.0600: The qeth device driver failed to recover an error on the 
 device  
 qeth: irb : 00 c2 60 17 0d b9 30 38 0e 00 10 00 00 80 00 00  
 ..`...08...
 .    
 qeth: irb 0010: 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
 ...
 .    
 qeth: sense data : 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
 
  
 qeth: sense data 0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
 
  
 qeth 0.0.0600: The qeth device driver failed to recover an error on the 
 device  


Mark Post

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Re: OT: similar forum, but for Linux on Intel?

[David Kreuter]

The Toronto Linux Users Group  (TLUG) has an excellent listserv discussion 
group. Non-Torontonians welcome! 
David

 Original message 
From: Dave Jones d...@vsoft-software.com 
Date:  
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: OT: similar forum, but for Linux on Intel? 
 
John, let me state that I think your posting here on general Linux
topics (e.g. Perl v. bash) are indeed a positive thing for the group
members. I suspect many folks here are like me, fairly new to the Linux
environment, and appreciate these posts as opportunities to learn more
about this platform, regardless of where it is running.

My $0.02 of course.

DJ

On 02/05/2013 03:44 PM, John McKown wrote:
 Does anybody know of a good quality discussion forum, blog, or web site for
 discussing things related to Linux on Intel. As you likely know, I sometime
 ask questions here which are more generally Linux related (such as the Bash
 vs Python thread). I really feel that I'm doing ya'll a disfavor by doing
 this. I'd prefer a good quality (low flame, high intelligence) forum which
 is for this sort of discussion. Perhaps even one which is actively
 moderated.

 --
 This is a test of the Emergency Broadcast System. If this had been an
 actual emergency, do you really think we'd stick around to tell you?

 Maranatha! 
 John McKown

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Re: VM6.2 Network issue

[David Kreuter]

What does QUERY VSWITCH DETAILS and QUERY OSA shows?
are you using the correct OSA ports?
David Kreuter


 Original Message 
Subject: VM6.2 Network issue
From: Melancon, Ruddy melanc...@dot.state.al.us
Date: Mon, December 03, 2012 6:03 pm
To: LINUX-390@VM.MARIST.EDU

I am trying to activate an LPAR with a new install of zVM 6.2. I have
gone through the IP wizard and defined the network. When I try to IPL
and access through a 3270 terminal on the network I cannot. When I
display the OSA addresses it shows them all free. A query of the vswitch
shows no devices on the group.

I am trying to share an OSA with my production zVM 6.1 system. It is
defined as a Layer 2. I defined 040 and 050 to the production system. I
am trying to use 048 with the new system.

Ay ideas?

Ruddy Melancon
Alabama Department of Transportation




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Re: cmsfs woes

[David Kreuter]

sorry for your troubles. Can't help but think that somehow multi-write
was involved here. What is meant by 
sharing a common 191 disk r/w - simultaneously r/w'ing from two CMS
machines? ouch
David Kreuter


 Original Message 
Subject: cmsfs woes
From: Michael MacIsaac mike...@us.ibm.com
Date: Mon, September 24, 2012 11:59 am
To: LINUX-390@VM.MARIST.EDU

Hello list,

Has anyone heard of cmsfscat or cmsfslst corrupting a CMS disk? A few of
us were sharing a common 191 disk R/W occasionally on CMS, but R/O on
Linux (by definition).

I ran a script that uses cmsfs and got this:

cmsfs_map_ADT(): directory RECFM 'V' not 'F'
cmsfs_vopen(): cmsfs_map_ADT() returned -1
*** glibc detected *** cmsfscat: double free or corruption (!prev):
0x80009180 ***
=== Backtrace: =
/lib64/libc.so.6[0x20ac46e]
/lib64/libc.so.6(__libc_free+0x82)[0x20ad9fe]
cmsfscat[0x8000185c]
cmsfscat[0x8000198a]
cmsfscat[0x8e8a]
/lib64/libc.so.6(__libc_start_main+0x100)[0x2051568]
cmsfscat(__libc_start_main+0x5e)[0x8c1a]
=== Memory map: 
8000-80005000 r-xp  5e:05 119256 /usr/bin/cmsfscat
80005000-80006000 rw-p 4000 5e:05 119256 /usr/bin/cmsfscat
80006000-8002a000 rwxp 80006000 00:00 0 [heap]
200-201e000 r-xp  5e:05 306443 /lib64/ld-2.4.so
...

Now the common CMS disk is giving a device error. Not sure if this is
the cause or the symptom. Any help will be appreciated.

Mike MacIsaac mikemac at-sign us.ibm.com

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Re: z/Linux and z/OS

[David Kreuter]

very true. Executive or near to executive level sponsorship is key.
Can't progress much without it.
David Kreuter


 Original Message 
Subject: Re: z/Linux and z/OS
From: OAKES Roger * ETS roger.oa...@state.or.us
Date: Fri, July 27, 2012 12:37 pm
To: LINUX-390@VM.MARIST.EDU

David, we've been running Linux on Z for quite a while, since about 2003
or so. Tech management read about the IFL processor for the z/800, IBM
made them a heck of a deal and we had someone step up and offer to
support Linux and VM so we were off and running. 

Now we're floundering a bit. Tech management still sees the advantages,
but we don't have much 'new' Linux workload so in order to grow Linux on
Z we have to port existing systems from X to Z. 

The phrase Linux is Linux is Linux is still true, but the change from
Linux on Intel to Linux on Z is not an easy migration. It appears you
have to build the z/Linux guest using the s/390 kernel, install the apps
and move the data over, so you have to engage your business and
development side in acceptance testing to move something that is working
to the new platform. The technical side does see some differences,
please see the note from Dorothea Mattheus about the CPUPLUGD daemon on
July 24. You just don't have the same issues for Linux on Intel. 

I strongly believe you should run your POC. The technology does work as
advertised, maybe even better. Just please make sure there is support
for the platform where it's needed in the organization before you go
live. 

Roger Oakes 

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
Spring, David
Sent: Friday, July 27, 2012 7:02 AM
To: LINUX-390@VM.MARIST.EDU
Subject: FW: z/Linux and z/OS

Good morning again and a happy Friday to all.

I wanted to thank everyone who responded to my post yesterday. This
listserv looks like a tremendous resource and repository of z/Linux and
mainframe knowledge. I'm sure I'll be back soon!

David Spring 
Social Security Administration
DCS/OTSO/DMSS/MOSB
MVS Operating System Team
Desk: (410) 965-9309
BB: (443) 379-7839
Email: david.spr...@ssa.gov

-Original Message-
From: Spring, David 
Sent: Thursday, July 26, 2012 8:28 AM
To: 'Linux on 390 Port'
Subject: z/Linux and z/OS 

Good morning all,

Hope this is the right place to ask this question. Please pardon the
intrusion if I should be posting this someplace else.

Our management is considering the acquisition of a new z114 sandbox
system primarily for testing new hardware (DASD and tape). They would
also like to conduct a z/Linux POC using the same machine. I know that
z/Linux can run in native mode on a System z processor but I wasn't sure
about it running side by side with z/OS. Can this be done using PR/SM
and building separate LPARs on the z114 for running z/Linux and z/OS
together on the same machine? I know that the most sensible solution
would probably be to get a z/VM hypervisor and run z/OS and z/Linux as
guest operating systems under it. However, there's a lot of resistance
here to running yet another operating system such as z/VM.

Any comments, advice, etc.? 

David Spring 
Social Security Administration
DCS/OTSO/DMSS/MOSB
MVS Operating System Team
Desk: (410) 965-9309
BB: (443) 379-7839
Email: david.spr...@ssa.gov

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Red Hat Indeed

[David Kreuter]

Happy 4th to all my U.S. brethren.
Here in Canada it is a work day. I'm traveling to Ottawa this a.m.
I start chatting with the lady next to me. She tells me she is just back
from Las Vegas where she was attending a Red Hat conference.
So naturally my ears picked up. Linux I say? 
She then picks up a bag, unties it ... and removes a hand made
red hat with all sorts of veils and tassels and stuff...
It looked like something you might where at graduation.
apparently there is a red hat society throughout at least North America
where they
make ... ready for it? Red Hats. She has a monthly get together to do
this and
they have an annual conference.
And for those of you who know (of) me ... I am not making this up!
David Kreuter


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Re: OFF: Anyone from Toronto?

[David Kreuter]

Mauro - with pleasure. I live in the GTA (Greater Toronto Area). Contact
me off list at your leisure.
David Kreuter

 Original Message 
Subject: OFF: Anyone from Toronto?
From: Mauro Souza thoriu...@gmail.com
Date: Tue, June 26, 2012 2:21 pm
To: LINUX-390@VM.MARIST.EDU

Hi guys!

Next week I will be traveling to Toronto, and will spend about 4 weeks
there on vacation.

I would like to know if there's some from our fine list living nearby,
so
we can talk and I could get some tips on my stay.

Thanks!

Mauro
http://mauro.limeiratem.com - registered Linux User: 294521
Scripture is both history, and a love letter from God.

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Re: Formating/Partitioning emulated FBA in linux

[David Kreuter]

Hi Grzegorz - hello - been a while! I can tell you that I have clients
that use EDEV FBA for non-production databases, mostly but not
exclusively Oracle. We're using minidisks with underlying multipathed
EDEVs.
Good ole' DIRMAINT is in charge of the storage management.
It works well.
Linux system DASD is on ECKD.
I like and echo Rob's approach of scattering the Linux root filesystem
onto minidisks.
David Kreuter

 Original Message 
Subject: Re: Formating/Partitioning emulated FBA in linux
From: Grzegorz Powiedziuk gpowiedz...@gmail.com
Date: Tue, March 20, 2012 6:48 pm
To: LINUX-390@VM.MARIST.EDU

2012/3/20 Rob van der Heij rvdh...@gmail.com


 Maybe have the box ticked to format the device first? You shouldn't.

 You can partition it with fdisk but I have not found the magic spell
 to avoid the not on cylinder boundary warnings.

 But the approach would be to create mini disks and scatter than over
 your EDEVs, otherwise you limit yourself again to one I/O at a time
 for the entire set of partitions on that single virtual FBA.

 Rob


Hmm  I believe that I don't have to worry about limited ios because
it
is going to be a system drive only.
I can imagine that /var might be hit from time to time. DB will be on a
seperate device.

But anyway, in ancient share presentation (2002) I have found that EDEV
disk, has to be reconfigured for MSDOS partitioning...
So that's what I did - I went to expert mode and created a new partition
table, type MSDOS and.. it worked. Linux is being installed right now.

I have a bad feeling that I am doing something unusual here and it is
not
going to be good for a production virtual machine.

Perhaps I should reconsider using mdisks.

Thanks
Grzegorz P

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Re: Formating/Partitioning emulated FBA in linux

[David Kreuter]

Just by way of further clarification of my Mark's accurate comment:
1. VDISK is in one of theses states: in core memory, paged out, or never
referenced, i.e. it's treated as memory albeit looking like FBA. No
actual FBA I/O occurs.
2. EDEV exists at least in the hardware. Feels like FBA to the virtual
machine. Actual I/O occurs as needed. The real I/O's are not FBA CCWs
rather are SCSI driven through QDIO. No actual FBA I/O occurs.
David Kreuter

Yes, you would. That's the whole idea of EDEVs. You let z/VM manage the SCSI 
part, and Linux treats it just like VDISK, for example.


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Re: Are your Linux instances healthy?

[David Kreuter]

The terminal server creates an IUCVTTY device. Really cool.
David Kreuter


 Original Message 
Subject: Re: Are your Linux instances healthy?
From: Foster, Ron ron.fos...@baldor.abb.com
Date: Mon, March 19, 2012 1:01 pm
To: LINUX-390@VM.MARIST.EDU

Does the terminal server use ttys? 


From: Linux on 390 Port [LINUX-390@VM.MARIST.EDU] on behalf of Mark Post
[mp...@novell.com]
Sent: Monday, March 19, 2012 11:20 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Are your Linux instances healthy?

 On 3/19/2012 at 11:22 AM, RPN01 nix.rob...@mayo.edu wrote:
 The third exception is about having ttys defined, without having programs
 running to talk to them. I buy this one. I'm not sure why the zLinux images
 define tty devices, when there are no interfaces for these to talk to. They
 just waste memory and never get used, as far as I know.

On SLES, there is just one, which is actually running and useful, to
present a login prompt to the z/VM console:
1:2345:respawn:/sbin/mingetty --noclear /dev/ttyS0 dumb

I don't know what RHEL does.


Mark Post

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Re: VM toolset(s) info request

[David Kreuter]

RACF awkward? Say what? I've been beaten with the RACFVM stick with
nails coming out of it for so long I like it now!
The RACUT* utilities while they do work are pretty ugly with their
insistence on specific virtual addresses, memory size (really in 2012 -
exactly 20Mb?).

RACF commands are OK once as stated in the stick with nails are fairly
intuitive after a while.

Replying to RACFVM messages with SEND or SMSG ... ugly.

DIRMAINT can be whipped into shape pretty nicely. It's interface isn't
great. It does have nice multiple LPAR support sitting on top of RSCS.

David Kreuter

  Original Message 
 Subject: Re: VM toolset(s) info request
 From: David Boyes dbo...@sinenomine.net
 Date: Tue, March 13, 2012 2:26 pm
 To: LINUX-390@VM.MARIST.EDU
 
 The CA tools are probably your best bet for an operations suite. They've been 
 around for ages, are very mature, and are far better integrated than the IBM 
 suite. Once you've used VMSecure, RACF and DIRMAINT feel very awkward. 
 VM:Backup and VM:Tape are a smooth pair, and understand SFS and BFS.
 
 I'll let others answer on the Velocity stuff. Their performace tools are 
 certainly top-tier, but haven't spent enough time with their system 
 management tools to be able to comment intelligently.
 
 
 
 On Mar 13, 2012, at 12:55, bruce.light...@its.ms.gov 
 bruce.light...@its.ms.gov wrote:
 
  We currently have some of the Velocity products and - maybe - some of the
  IBM basic products for monitoring and managing our VM environments. We are
  implementing SAP on z/Series and have a separate, much-smaller-but-growing,
  environment that hosts other applications. Our current situation is a bit
  scattered  in approach and we need to standardize on tools and procedures
  across our systems.
  
  That said, I'd like to know the experience/opinions of those using the
  three sets that we want to evaluate - both for usability and
  completeness.
  
  1) We are currently using some of the Velocity products and may or may not
  pick up others - can I do everything I need to do with just Velocity to
  manage and monitor VM and the z/Linux guests or would I need to add
  something from IBM and/or CA ?
  
  2) CA has a large presence in our z/OS side and wants us to consider their
  VM:Manager toolset - and seems to have partnered with Velocity to support
  their stuff too. Is the CA toolset both mature and complete ? Would a
  mix/match of their stuff with Velocity be a good fit ?
  
  3) and finally, IBM has their tools to offer.
  
  We want our operators to be able to monitor the status and complaints of VM
  and the guests;  the Service Desk folks to be able to triage a problem and,
  maybe, correct simpler things ; and the support staff to be able to
  maintain the systems, diagnose problems, and fix issues. Plus, there is a
  limited staff with some turnover - so easy training and consistency of
  interface is a benefit.
  
  Yep - we want Nirvana, but what do we need to get the job done with no
  holes in monitoring and functionality. Oh, affordability is nice, too.
  
  
  Opinions and advise appreciated, sales pitches ignored - thanks,
  
  Bruce Lightsey
  Mississippi Dept. of Information Technology Services
  3771 Eastwood Drive
  Jackson, Ms 39211
  (601) 432-8144  voice
  www.its.ms.gov   www.ms.gov
  mailto:bruce.light...@its.ms.gov
  
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Re: ZVM IPL Error

[David Kreuter]

Hi Matt: What console are you using to IPL? The CP READ pending is
seen if you are IPLing a second level z/VM system and your console is
not in CONMODE 3270 or you are using the non-3270 system console in the
HMC.  If you are doing the IPL from an HMC you would be better off using
the integrated 3270. I don't have any idea of your console address so
when SAPL appears enter CONS=SYSC when using integrated 3270 in the IPL
PARMS section of the wonderful SAPL screen.
Anyway. A WARM start uses the spool pointers from the WARM cylinders to
quickly rebuild your spool queues.  Your WARM cylinders are invalid due
to the IPL over the IPL. A FORCE start will rebuild the spool queues and
delete any broken files due to invalid pointers.  It usually will cost
you very few spool files.

In any case you might be best served by doing a STOP, correcting your
3270 console issue, IPL again, and do a FORCE start.
David Kreuter

  Original Message 
 Subject: ZVM IPL Error
 From: Dazzo, Matt mda...@pch.com
 Date: Wed, March 07, 2012 11:33 am
 To: LINUX-390@VM.MARIST.EDU
 
 I had to add the timezone for 2012 in my SYSTEM CONFIG file. I thought 
 (that's the problem) it might be a good idea to IPL for 2 reasons, first it's 
 been months since vm was ipl'd, second I did not know if the changes would be 
 in affect without it.
 
 Seems vm did not come down all the way even after waiting 10-15 minutes, so I 
 did a load to restart and now have the following messages and can't find too 
 much  on it on the internet. Aside from entering the FORCE seems I do not 
 have much of an option? Any help is appreciated. Thanks Matt
 
 HCPSED6013A a cp read is pending
 Invalid warm start data encountered
 To change to a force start enter force
 To stop processing enter stop
 
 
 
 
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Re: OSI Layer 2/3 mismatch?

[David Kreuter]

Hi Lee - Your guests can be on different VLANs on Layer 3. Perhaps there
is another reason driving the Layer 2 decision?
David Kreuter


 Original Message 
Subject: OSI Layer 2/3 mismatch?
From: Lee Stewart lstewart.dsgr...@attglobal.net
Date: Tue, February 28, 2012 7:13 pm
To: LINUX-390@VM.MARIST.EDU

Hi all
I must be missing something...

Customer has a VM 6.1 system (RSU 1101 + z114 PTFs) and SLES11 SP1
guests. Initially the guest was on a Layer3 Vswitch - no problem. They
needed to change to go to Layer2 so they could have guests on different
VLANs - but still have the Linuxes be Layer3. We:
 - Updated the IP info on the Llnuxes and shut them down and logged off.
 - Deleted (DETach) the old Layer3 Vswitch.
 - Networking changed the real switch port to trunk mode
 - We changed the TCPIP stack to Layer2 and it's VLAN - all ok..
 - We redefined the Vswitch as:
 DEFINE VSWITCH VSWITCH2 RDEV E203 ETH VLAN 999 NAT 999
 (Default PORTTYPE ACCESS)
 - Regranted the user as:
 SET VSWITCH VSWITCH2 GRANT LXTECH VLAN 301
All looks good in the queries

But when we boot the Linux, we can see qeth try to register layer3, but
we get:
 The qeth device is not configured for the OSI layer required by z/VM

We've double checked our definitions and even bounced the system.

Have I missed something? Am I having a brain cloud?

Thanks,
Lee





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Web: www.siriuscom.com

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Re: hipersocket question for dummies (me )

[David Kreuter]

Hi - Alan is right, of course.  Let me add a few things.
1. although I have no idea as to your shop's actual reasoning in my
experience if z/os in charge of the I/O configuration (fairly typical)
they tend to be stingy generating RDEVs (OK, UCBs) on IQD type chpids. 
I have no idea why z/os has this mentality as they often have thousands
of UCBs to handle DASD PAVing.  My practice if I can get get a hold of
the IOCP or at least influence it is to gen 255 addresses (RDEVs) on the
IQD chpids.  
Oh yeah I sort of remember - z/OS doesn't have that many TCPIP stacks to
support so genning only a few triplets almost makes sense (the same
triplets can be shared on different LPARs - again this a style decision
you need to make at your shop).

2. don't be confused by the fact you have the same LAN segment on
different CHPIDs. They're ignorant of each other. Up until the moment
the moment that one stack has two sets of hipersockets defined to it the
networks can't see each other.

3. From z/VM MAINT userid do a: 
Q CHPID E8
Q CHPID E9
this will show you the devices bolted off each chpid - could be
informative!

4. where possible I like to have only a few hipersocket IQD chpids -
hopefully one -, define a VLAN topology on top of the hipersocket
network, and go from there. It's charming.
David Kreuter

 Original Message 
Subject: Re: hipersocket question for dummies (me )
From: Offer Baruch offerbar...@gmail.com
Date: Sat, January 21, 2012 4:29 am
To: LINUX-390@VM.MARIST.EDU

Hi,

i didn't understand if E8xx and E9xx are on the same chpid... i think
they
are.
it seems you were on the right path but you missed something...
on z/OS you have created 3 devices that are all on the same subnet.
defining 3 routes to each Device will not help. how will z/OS know when
to
use which path? in your case it always uses the first. that is why E8
keeps
working.
because you added more IP addresses to z/OS i guess that you don't mind
that E9 guests will reach z/OS using a different IP address.
That said, you can define each device group (E8, E9 etc) in a different
VLAN. Check out the DEVICE/LINK/INTERFACE statements to select the VLAN
to
use.
that will allow you to use more than one subnet on that chpid.
if i got it wrong and you want all guests and z/OS to be on the same
subnet
than you must add more devices to E8xx as Alan said...

Offer Baruch

On Fri, Jan 20, 2012 at 11:45 PM, Alan Altmark
alan_altm...@us.ibm.comwrote:

 On Friday, 01/20/2012 at 04:38 EST, bruce.light...@its.ms.gov wrote:

  The first 8 guests work just fine - z/OS IP address is 192.168.4.2 and
 the
  guests are 192.168.4.xxx and all are using CHPID E8
  After the 8 guests are defined, we are out of E8 triplets so we give the
  next 2 E9xx triplets.
  The z/OS stack has E9 defined and started as 192.168.4.3.
  The 2 new guests can ping themselves but not the z/OS, z/OS can ping
 itself
  but not the 2 new guests - the 8 guests on E8 are no problem but no joy
  going to E9 .
  Changing the dedicate statement for the guest to use EAxx also gets no
 joy
  - even though the z/OS thinks it has EA at 192.168.4.4
  The redbook for hipersockets isn't helping today - nor is the
  communications server manual.
 
  I'm sure that this is something blindingly simple but I just don't see
 it -
  would someone please point this dba who is subbing as a sysprog in the
  right direction.

 You're right, it's simple. That said, it's not obvious. But since you're
 just subbing, all is forgiven. :-)

 Each HiperSocket chpid is its own LAN segment. They are not bridged
 together. So the hosts using E8 have to go through a *router* (e.g.
 Linux, z/OS, z/VM) to get a host attached to E9 or EA.

 If you run out of triplets, you need to define more.

 Alan Altmark

 Senior Managing z/VM and Linux Consultant
 IBM System Lab Services and Training
 ibm.com/systems/services/labservices
 office: 607.429.3323
 mobile; 607.321.7556
 alan_altm...@us.ibm.com
 IBM Endicott

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Re: z/VM Switch performance

[David Kreuter]

Hi Sheldon - how many IFLs online and how many Linux guests were active
during this reporting period?
Are most of them from one server?
David Kreuter


 Original Message 
Subject: Re: z/VM Switch performance
From: Sheldon Davis sda...@isracard.co.il
Date: Thu, November 03, 2011 10:34 am
To: LINUX-390@VM.MARIST.EDU


Hi

What is a high number? 
We have 126 per second

Best Regards

Sheldon Davis


 Have you checked to see if an excessive amount of DIAGNOSE X'9C' (Voluntary 
Time Slice Yield) instructions are being executed?


Mark Post


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Re: z/VM Switch performance

[David Kreuter]

Yes I would like to see how a guest lan behaves.
Can you send a sample of the pings with the erratic response times?
David


 Original Message 
Subject: Re: z/VM Switch performance
From: Offer Baruch offerbar...@gmail.com
Date: Thu, October 27, 2011 5:19 am
To: LINUX-390@VM.MARIST.EDU

Hi,

This is a production system so messing around with it for long is a
problem.
You want to see if a guest lan will be better than a disconnected
VSWITCH?
My MTU is 1492.

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
David Kreuter
Sent: Wednesday, October 26, 2011 8:21 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: z/VM Switch performance

Hi Offer:
try these scenarios:
1. keep the VSWITCH as DISCONNECT (i.e. no osa) and try your pings again
2. create a guest lan (not a VSWITCH), give the machines nic's to the
guest lan and try again.

what are your mtu sizes?
regards
David Kreuter



  Original Message 
 Subject: z/VM Switch performance
 From: Offer Baruch offerbar...@gmail.com
 Date: Wed, October 26, 2011 1:49 pm
 To: LINUX-390@VM.MARIST.EDU
 
 Hi all,
 
 
 
 I have a major problem with what seems as VSWITCH performance issue.
 
 I have a VLAN aware VSWITCH connected to 2 X 1Gb OSA ports (1 for 
 backup - no link aggregation).
 
 A continues ping between 2 Linux guest on the same VSWITCH on the same 
 VLAN will show high response times (meaning that all communication 
 between the 2 guests remain within the VSWITCH)
 
 Things like 200ms, 50ms, 8ms (not all the time but every 3 or 4 pings 
 I get a high one).
 
 A continues ping from the Linux guest to itself will show much less 
 than 1ms all the time. I conclude from that, that the Linux guest 
 itself is not the problem.
 
 It means that the Linux guest is dispatched, does not hang. It test 
 both the Linux responsiveness and the Linux tcpip stack.
 
 That leads to my conclusion that the only difference of the 2 tests is 
 the VSWITCH being involved.
 
 z/VM is far from 100% CPU and almost no paging is in place (10-15 
 pages per second).
 
 I can't figure out what might be the problem.
 
 I did find 2 APARS talking about VSWITCH performance after a failover 
 to the backup device.
 
 The APAR states to disconnect and connect the OSA devices (I did SET 
 VSWITCH DISCONNECT followed by a SET VSWITCH CONNECT) but the problem remains.
 
 
 
 Linux guest are using Access NICs (that is not truck).
 
 
 
 Any ideas?
 
 
 
 Thanks
 
 Offer Baruch
 
 
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No virus found in this message.
Checked by AVG - www.avg.com
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Re: z/VM Switch performance

[David Kreuter]

Hi Offer:
try these scenarios:
1. keep the VSWITCH as DISCONNECT (i.e. no osa) and try your pings again
2. create a guest lan (not a VSWITCH), give the machines nic's to the
guest lan and try again.

what are your mtu sizes?
regards
David Kreuter



  Original Message 
 Subject: z/VM Switch performance
 From: Offer Baruch offerbar...@gmail.com
 Date: Wed, October 26, 2011 1:49 pm
 To: LINUX-390@VM.MARIST.EDU
 
 Hi all,
 
 
 
 I have a major problem with what seems as VSWITCH performance issue.
 
 I have a VLAN aware VSWITCH connected to 2 X 1Gb OSA ports (1 for backup -
 no link aggregation).
 
 A continues ping between 2 Linux guest on the same VSWITCH on the same VLAN
 will show high response times (meaning that all communication between the 2
 guests remain within the VSWITCH)
 
 Things like 200ms, 50ms, 8ms (not all the time but every 3 or 4 pings I get
 a high one).
 
 A continues ping from the Linux guest to itself will show much less than 1ms
 all the time. I conclude from that, that the Linux guest itself is not the
 problem.
 
 It means that the Linux guest is dispatched, does not hang. It test both the
 Linux responsiveness and the Linux tcpip stack.
 
 That leads to my conclusion that the only difference of the 2 tests is the
 VSWITCH being involved.
 
 z/VM is far from 100% CPU and almost no paging is in place (10-15 pages per
 second).
 
 I can't figure out what might be the problem.
 
 I did find 2 APARS talking about VSWITCH performance after a failover to the
 backup device.
 
 The APAR states to disconnect and connect the OSA devices (I did SET VSWITCH
 DISCONNECT followed by a SET VSWITCH CONNECT) but the problem remains.
 
 
 
 Linux guest are using Access NICs (that is not truck).
 
 
 
 Any ideas?
 
 
 
 Thanks
 
 Offer Baruch
 
 
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Re: z/VM page space

[David Kreuter]

I doubt CP moves the pages unless it needs to pull the page into memory
for actual use.  Otherwise that would be page migration.  
A need to move spool is indeed rare.
This idea is a mutant variant of the Do you know where the NSSes are?
notion.  Come up clean with 1 spool volume, build your segments, then
pull other spool volumes online. Of course this goes back to the day
when spooling was done on multiple mod3s.  Now I just spool wherever -
even 27s - as long as I have tested a SYSTEM RESTART invoked dump to
insure that there is enough room to hold the dump.

Now we just need need to update standalone dumping to go to DASD.
David



 Original Message 
Subject: Re: z/VM page space
From: David Boyes dbo...@sinenomine.net
Date: Thu, June 16, 2011 11:59 pm
To: LINUX-390@VM.MARIST.EDU

On 6/16/11 7:36 PM, David Kreuter dkreu...@vm-resources.com wrote:

evil thought. Come up without paging space - paging early life will go
to spool. Have the autolog
machine bring up the real page volumes.

Hmm. You know, that might just work in these days of gigabyte real
memory
configurations. Still no way to force CP to move the pages once they're
out there, but we change our spool volumes even less frequently than we
do
page, and we probably don't really care so much with a small spillover
into spool. 

It's been a while since I've tried that, and I don't remember whether CP
tries hard to get that stuff out of the spool areas when more paging
space
becomes available. 

 Moving spool a whole 'nuther
thing - so who cares?

Apparently nobody but me. 8-) Ask Neale -- this happens all the time
here.
He patiently listens to me think out loud. But, a what if that could
avoid a full IPL seems interesting...

-- db



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Re: z/VM page space

[David Kreuter]

evil thought. Come up without paging space - paging early life will go
to spool. Have the autolog
machine bring up the real page volumes.  Moving spool a whole 'nuther
thing - so who cares?
David


 Original Message 
Subject: Re: z/VM page space
From: David Boyes dbo...@sinenomine.net
Date: Thu, June 16, 2011 9:37 am
To: LINUX-390@VM.MARIST.EDU

On 6/15/11 10:02 PM, O'Brien, Dennis L
dennis.l.o'br...@bankofamerica.com wrote:

If you have the luxury of an IPL, this is easy. Just put Drain records
in SYSTEM CONFIG for the volumes that you don't want pages on. CP won't
put anything on them, not even its own pages. The original question was
whether there's a way to move the pages later.

Yes, I understand that. If you can/are willing to IPL, great, none of
this
is a concern. The problem that exhibits is that once you're up, there is
the situation that there are internal-to-CP pages out there that no
amount
of virtual machine fiddling can do anything about -- you end up with a
volume that has 1 CP page on it, so you can't do anything with that
volume
except IPL with DRAIN records. There's no way to ask CP to please move
that one page so I can get that volume offline without doing a full IPL.

 If and when Live Guest Relocation comes out,

If. If is good. 

But anyway. IPL is a very big hammer to fix something like this. It's an
annoying thing that bugs me, which causes me to pick at it to see if
there
is a solution short of wait and see. Just thinking out loud.

-- db

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Re: Performance toolkit - HCPMOG6556E

[David Kreuter]

Hi Kobus: From MAINT or the PERFSVM user issue a QUERY MONITOR.  Note
the size of sample pages, consider making it much larger.  You will need
to create a new larger MONDCSS to contain the new larger sample area.
There's an IBM calculation somewhere but I recommend starting by
doubling the size of the sample area.
Handy command: MONITOR SAMPLE CONFIG SIZE n
where n = number of pages
David Kreuter

 Original Message 
Subject: Performance toolkit - HCPMOG6556E
From: Kobus Erwee kobus.er...@sita.co.za
Date: Tue, June 14, 2011 9:57 am
To: LINUX-390@VM.MARIST.EDU

Hi,



Can anyone please tell me why I get the following error when starting
PERFSVM. You can not use the gui or 3270 interactive monitor as the
collection of data is not active.



FCXBAS500I Performance Toolkit for VM FL530


FCXPMN445E Return code 6556 for MONITOR START command


FCXAPP530I Connected to *IDENT for resource FCXRES00


FCXAPF530I Connected to *IDENT for resource FCXSYSTM


FCXTCP571I Connected to TCP/IP server TCPIP on path 0003


FCXTCR571I Connected to TCP/IP server TCPIP on path 0004


FCXAPP527I User PERFSVM connected on path 0006


FCXAPC535I Connected to resource FCXRES00 on path , for SF-Coll


FCXTCP575I WebServer host IP address is 10.131.56.250:00081


FCXTCR575I TCPRequest host IP address is 10.131.56.250:41780


FCXTCR590I TCPRequest interface activated


FCXTCP590I WebServer interface activated


Monitor event started -- recording is activated


HCPMOG6556E Sample monitoring cannot start because there are not enough
pages

available in the DCSS MONDCSS. 1792 pages are available.



When I do a q nss all map the output for mandcss is as follow:

0031 MONDCSS CPDCSS N/A 02200 02FFF SC R 1 N/A
N/A



In what config file must I change what?



Any help would be appreciated.



Kobus


.

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Re: z/VM page space

[David Kreuter]

Thought - and probably did this years ago - I will page it back in -
come up with one page volume and necessary spool at IPL. Then have
AUTOLOG1/2 bring up the other page volumes before the massive guest
startup. Quasi dynamic.  Just keep your spool slots intact! ha ha unless
you like CLEAN start.
It is not worth the bother but there it is, a thought.
David


 Original Message 
Subject: Re: z/VM page space
From: David Boyes dbo...@sinenomine.net
Date: Tue, June 14, 2011 12:03 pm
To: LINUX-390@VM.MARIST.EDU

On 6/14/11 10:54 AM, Marcy Cortes marcy.d.cor...@wellsfargo.com
wrote:

The question is why do you need to know?

Short version: to know which guests to recycle to clear an old paging
volume without having to take a CP IPL just to get old pages off a
paging
volume. 

Problem is still going to be dealing with pages written during the first
few seconds after an IPL by CP itself.

I suspect that it would be possible to tweak the page device list in
real
storage to remove the volume in question, run the CP page list in real
core and force a page in/page out sequence for pages on the volume in
question, but There Lie Big Nasty Dragons. There's a lot of interlocking
pieces and CP integrity is at stake, so it would not be simple code.

Still, CP DRAIN cuu PAGE MIGRATE sounds like a requirement to me. Its
probably going to be necessary to get the clustering stuff to behave
well,
although I suspect breaking one more thing in that rewrite is probably
going to cause riots and much wailing in Endicott.

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Re: vmsysu

[David Kreuter]

Killed how? could a FORCE VMSERVU/XAUTOLOG VMSERVU help?
Is a corrupted disk involved. sfs dislikes bad disks.
David


 Original Message 
Subject: vmsysu
From: Dean, David (I/S) david_d...@bcbst.com
Date: Tue, June 14, 2011 6:13 pm
To: LINUX-390@VM.MARIST.EDU

Cowboy has killed vmsysu in zvm, getting abend errors logging in to
vmservu.

Is there an easy fix?


SDS ABEND SAVEAREA :

ADDR OFFSET DUMP DATA
01EC144C  000C2E00 81372C82 01F527C0 0001 * a..b.5..
*
01EC145C 0010 00E83000    * .Y..
*
01EC146C 0020 0A00 0021 00E83000 0050 * .Y.
*
01EC147C 0030 00E4EC78 81370848 00EE344C 01F52728 * .U..a...5..
*
01EC148C 0040 81370A04 81372C80 * a...a... *

David M. Dean
Information Systems
BlueCross BlueShield Tennnessee

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Re: Set Share Relative

[David Kreuter]

I know I know - first round on you - because the chocolate install of
zvm has that in the directory entry? Do I get the first round? 

These Linux workloads especially the polling apps are a brave new world
for the z/VM scheduler. Your papers lays it out there nicely. When you
need to find the sweet spot of CPU it takes some finagling.
David


 Original Message 
Subject: Re: Set Share Relative
From: Scott Rohling scott.rohl...@gmail.com
Date: Tue, June 14, 2011 6:51 pm
To: LINUX-390@VM.MARIST.EDU

No worries, Sir Rob - I seem to be especially cranky today. Excellent
paper
and explanation of relative share - and a much better answer then the
simplistic HELP explanation. I'll refer to this in the future... Thank
you!

Scott Rohling

On Tue, Jun 14, 2011 at 2:56 PM, Rob van der Heij 
rvdh...@velocity-software.com wrote:

 On Tue, Jun 14, 2011 at 7:57 PM, Scott Rohling scott.rohl...@gmail.com
 wrote:

  My statements were based on the help for CP SET SHARE.. my comments on
 math
  were somewhat tongue in cheek - but since this is a relative value - 100
 is
  as good as any other to base things on.. set all your guests to 7 and
 use
  increment of 3 if you like. No idea at all by what you mean by
 'political'
  .. and annoyed at the statement that the defaults are just flat out
 wrong.

 My apologies. One should not post on the mailing list while standing
 up or while in a hurry...

 You can't do VM performance with just the CP help files. I provided
 the link to the PDF that explains that it does not work the way you
 might think it should. The reason you see relative share like 100 and
 200 is not for simple math or aesthetics, but to compensate for the
 fact that the allocated share is distributed over the virtual CPUs.
 The paper explains what the implications are when you don't play the
 game right.

 We're pushing the scheduler to its limits with workloads that are
 completely different from what it was designed for. It works as long
 as you don't do silly things or try to mislead the scheduler.
 Political tuning is when someone claims that VTAM is the most
 important thing in the system and recommends it should have REL 1
 (or the z/OS sysprog insist that their OSA port should be preferred
 route even though he has no clue...)

 As for wrong - I thought that was beaten to death already. I buy an
 adult beverage for the first* who can explain why it makes sense to
 have the TCPIP stacks with a relative share 30 times higher than their
 Linux production guests.

 Rob
 --
 Rob van der Heij
 Velocity Software
 http://www.velocitysoftware.com/

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Re: Using CPFORMAT exec

[David Kreuter]

...and wait until it's cold and late and SERVICE or PUT2PROD fail badly
on you.
talk about front end madness!

David Kreuter


 Original Message 
Subject: Re: Using CPFORMAT exec
From: Michael MacIsaac mike...@us.ibm.com
Date: Wed, June 01, 2011 7:35 am
To: LINUX-390@VM.MARIST.EDU

Jeff,

 I certainly had no intention of disparaging wrappers as-such
Nope, did not take it that way.

 I do, however, like to make sure that folk know when they're
using a wrapper rather than the primary component ...
Yup, agreed.

Mike MacIsaac mike...@us.ibm.com (845) 433-7061

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Re: Using CPFORMAT exec

[David Kreuter]

CPFMTXA is the front end to IBM's DASD formatter ICKDSF.  It has 3 basic
functions:
LABEL, FORMAT, and ALLOCATE.
It expects a virtual disk device to write to. In many cases this is a
full pack volume attached to the virtual machine. But it can be a
minidisk that starts anywhere in a volume.
All of the directives are cast into input which is fed into ICKDSF.
LABEL writes a label onto ECKD cylinder 0 track 0 record 3.
FORMAT expects a cylinder range to write its bit pattern of 4096 byte
blocks.
ALLOCATE writes a byte/cylinder map on cyl 0 track 0 record 4 and spill
over if needed.
Allocations are most interesting to CP: DRCT, SPOL, PAGE, TDSK, PARM,
and PERM. Perm is the usual assignment for minidisks but  much to my
chagrin is also the alloc for critical WARM and CKPT cylinders.  Perm
can also hold parm space when you use it with the offset option in SAPL.

It is important to format at least cylinder 0 of a real volume and I
recommend formatting virtual cyl 0 of a minidisk for good ole' Linux. 
David Kreuter

 Original Message 
Subject: Using CPFORMAT exec
From: Cameron Seay cws...@gmail.com
Date: Sun, May 29, 2011 8:37 pm
To: LINUX-390@VM.MARIST.EDU

Does anyone have a clearer description of how to use the CPFORMAT exec
for
formatting DASD? I'm using the SLES10 Cookbook Redbook and was doing
fine
up to this point.

Thanks.

--
Cameron Seay, Ph.D.
Electronics, Computer and Information Technology
School of Technology
NC A  T State University
Greensboro, NC
336 334 7717 x2251

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Re: Moving Oracle off zLinux boxes -- comments from the field?

[David Kreuter]

The poster must have been confusing our world with vmware. Grins. We are
supported.
Echoing Barton Oracle runs *VERY WELL*.  IBM has experts that will come
in tune the LIVING DAYLIGHTS out of
Oracle - including reaching back and repairing crummy SQL statements.  I
have witnessed one SQL statement tuned resulting in saving 40% of an
IFL.

  The IBM Oracle team including Gaylan Braselton, David Simpson and Sam
Avesalu to name a few are highly skilled and helpful.

I have had clients successfully running hundreds of LOZ Oracle virtual
machines decide that windows was the solution to all problems.  It is
religo politico - cannot argue with that type of vaporized logic.  

David


 Original Message 
Subject: Re: Moving Oracle off zLinux boxes -- comments from the field?
From: Pat Carroll pcarr...@llbean.com
Date: Wed, March 23, 2011 1:30 pm
To: LINUX-390@VM.MARIST.EDU

Works *very* well here. 


Patrick Carroll | Technology Architect II 
L.L.Bean, Inc.(r) | Double L St. | Freeport ME 04033 
http://www.llbean.com | pcarr...@llbean.com | 207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
confidential information that is legally privileged. The information is
solely for the use of the intended recipient(s). Any disclosure,
copying, distribution, or other use of this information is strictly
prohibited. If you have received this e-mail in error, please notify the
sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
Christopher Cox
Sent: Wednesday, March 23, 2011 11:12 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Moving Oracle off zLinux boxes -- comments from the field?


Oracle is NOT supporting them well on zLinux. So... there's both the
financial and technical reason.

Why would anyone stay with a platform that is not well supported? Oracle
couldn't handle it, so they are moving.

Now... certainly the false mindset issue surrounding mainframes is an
issue... but I'd probably move Oracle too if they weren't willing to
address support issues in a timely manner.

Maybe it's time to change your database supplier?? You know, if if you
have to move it, I wonder if moving to something a bit more heavy duty,
like a IBM Power7 box was even considered... If DB2 isn't an option,
maybe Oracle on Power7 would be a better fit (saying without knowledge
of Oracle's commitment of support there as well).




From: Barton Robinson bar...@vm1.velocity-software.com
To: LINUX-390@vm.marist.edu
Date: 03/18/2011 04:04 PM
Subject: Re: Moving Oracle off zLinux boxes -- comments from the field?
Sent by: Linux on 390 Port LINUX-390@vm.marist.edu



wow, your DBAs have the authority to spend that kind of money and make
that kind of change without management signature? So no financial
analysis, no technical reason, sounds religious.

CHAPLIN, JAMES (CTR) wrote:
 We just had a surprise announcement by one of the Oracle DBAs during a 
 zLinux  Application group planning meeting at our worksite. The DBA 
 advised us that they (Database group) were going to move/migrate all 
 the Oracle databases that we have on zLinux boxes off to an intel/unix 
 platform. He did not offer details of the hardware, or when or how, 
 just that they were going to do it. This is a bite of a surprise as we 
 have just moved our MQ off the Mainframe (zOS) to the zLinux platform 
 (guests on zVM) and that move is doing well. This may be due in part 
 to the false mindset that we have in our upper management at our site 
 that Mainframes are old technology. Also we have had slow response 
 from Oracle on resolving issues we have identify (certifying Oracle 11 
 on z390x architecture, getting Oracle 10 support for RHEL 5.0 on z390x 
 architecture). Has anyone else on this list had any related war 
 stories similar to what we may be about to experience as this move 
 takes place?



 James Chaplin

 Systems Programmer, MVS, zVM  zLinux


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Re: Server rebooting after doing a CP Q DA from the console

[David Kreuter]

CP doesn't do that. In real time you can use the PA1 key to stop the
output of a CP command. But CP doesn't impose buffer limits. A true
pound signCP command will not limit the output buffer.  It looks like
somehow the terminal line end was changed and Linux was involved in
output swallowing.  Unless the server restart was not related! as
obscure as that seems.

What about a temporary CP READ state by using PA1 key, then issuing the
cp command? Your buffer should not be limited and the output is not
given to Linux.
David


 Original Message 
Subject: Re: Server rebooting after doing a CP Q DA from the console
From: CHAPLIN, JAMES (CTR) james.chap...@associates.dhs.gov
Date: Sat, March 19, 2011 2:23 pm
To: LINUX-390@VM.MARIST.EDU

Yes I understand Alan is right on, and that vmcp protect's itself with a
limited buffer. But when I did the same command from the console instead
of using the vmcp command on the guest, it brought the entire server
down. VMCP limits the amount of output through buffers, how does VM
limit output from commands from the console? I should have phrased my
question that way.

James Chaplin
Systems Programmer, MVS, zVM  zLinux

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
Ronald van der Laan
Sent: Saturday, March 19, 2011 9:23 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Server rebooting after doing a CP Q DA from the console

James,

As Alan said, someone is intercepting in Linux your CP command.
The vmcp q term does not generate so much output that it does not fit
in
the standard vmcp buffer, so you should be fairly safe issueing that
command.
An other option is to issue from an other authorized VM user (for
instance
MAINT) the command FOR linux_guest_id CMD QUERY TERMINAL

For what it is worth, in my days as an operator (a long long time ago),
we
intercepted the D T command, sometimes issued by MVS operators to
Display
Time. Only on VM it was a Dump Terminal, so we were less amused when
that got issued under OPERATOR ..

Ronald van der Laan

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Re: Where is kernel loaded in memory?

[David Kreuter]

Have you considered SET RESERVE for this guest? What about expanded
storage tweaks/increase?
David


 Original Message 
Subject: Re: Where is kernel loaded in memory?
From: Mark Wheeler mwheele...@hotmail.com
Date: Thu, March 17, 2011 2:11 pm
To: LINUX-390@VM.MARIST.EDU

MQ Broker.

 
 Date: Thu, 17 Mar 2011 12:22:35 -0500
 From: marcy.d.cor...@wellsfargo.com
 Subject: Re: Where is kernel loaded in memory?
 To: LINUX-390@VM.MARIST.EDU
 
 Mark, is this WAS? Is it possible it involves the heap? (BTDT :)
 
 
 Marcy 
 
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Re: Cloning question for zLinux

[David Kreuter]

sigh Gary did you per chance get DATAMOVEd? Can you check
dirmaint/datamove logs? Is the workunit hanging around?
David


 Original Message 
Subject: Re: Cloning question for zLinux
From: Scott Rohling scott.rohl...@gmail.com
Date: Wed, March 09, 2011 2:05 pm
To: LINUX-390@VM.MARIST.EDU

Make that 'df -Th' it would be good to see the filesystem types too..

Scott Rohling

On Wed, Mar 9, 2011 at 12:03 PM, Scott Rohling
scott.rohl...@gmail.comwrote:

 Odd.. it must have a empty filesystem on it or it wouldn't mount..
 DIRM CLONEDISK is doing a physical copy. Unless the CLONEDISK failed (and
 there was a previous empty filesystem on the disk), I'm not sure why you're
 seeing an empty directory. Maybe show us a 'df -h' command as well as an
 'lsdasd'?

 Scott Rohling


 On Wed, Mar 9, 2011 at 11:48 AM, Gary Detro de...@us.ibm.com wrote:

 yes the lsdasd showed both dasdb and dasdc ...

 but when I examine the directory /dasdc it is empty



 Thanks,
 Gary L. Detro

 Senior IT Specialist 1177 S. Belt Line Rd; Coppell, TX 75019
 Internal Mail Stop: 77-01-3001O; Coppell, TX
 Phone: 469-549-8174 (t/l 603-8174); Fax: 469-549-8235 (t/l 603-8235)
 Send me an email de...@us.ibm.com






 From:
 Scott Rohling scott.rohl...@gmail.com
 To:
 LINUX-390@vm.marist.edu
 Date:
 03/09/2011 12:38 PM
 Subject:
 Re: Cloning question for zLinux
 Sent by:
 Linux on 390 Port LINUX-390@vm.marist.edu



 No - you can mount 2 separate DASD's as long as they aren't LVM
 volumes
 - no problem.

 So - does that file exist? (the config for the 4220) .. if not, why
 not? Need more info about your clones..

 Also - are you sure it's /dev/dasdc1 ? Did you do an lsdasd to confirm?

 Scott Rohling

 On Wed, Mar 9, 2011 at 11:02 AM, Gary Detro de...@us.ibm.com wrote:

  I am having a problem with cloning zLinux systems ( use DirMaint
 clonedisk
  command to create the 201 disk for our cloned zlinux guests)
 
  This is a SuSE10 sp2 system we run the cloning process from
 
  My process will create a single clone without problem.
 
  vmcp link userid 201 20f mr
  chccwdev -e 20f
  mount /dev/dasb1 /newsys1
  then change ipaddress and hostname
 
  While that program is running we start another clone which does the
  following
 
  vmcp link userid 201 20e mr
  chcwdev -e 20e
  mount /dev/dasdc1 /newsys2
 
  and then the second one fails:
 
  sed: File /newsys2/etc/sysconfig/network/ifcfg-qeth-bus-ccw-0.0.4220
 not
  found.
 
  Is there something in the zLinux kernel that would not allow two disk to
  be online that are identical to start with?
 
 
  Thanks,
  Gary L. Detro
 
  Senior IT Specialist 1177 S. Belt Line Rd; Coppell, TX 75019
  Internal Mail Stop: 77-01-3001O; Coppell, TX
  Phone: 469-549-8174 (t/l 603-8174); Fax: 469-549-8235 (t/l 603-8235)
  Send me an email de...@us.ibm.com
 
 
 
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Re: cannot add new user

[David Kreuter]

Eric - what do your config* datadvh file(s) look like? you should have
created a config1 or config99 datadvh or something like that as part of
your dirmaint tailoring.
David

 Original Message 
Subject: cannot add new user
From: Eric Spencer eric.spen...@neon.com
Date: Sun, January 23, 2011 7:08 pm
To: LINUX-390@VM.MARIST.EDU

I am trying to add a new user but it is telling me my DATAMOVE machine
is not set up correctly... I have gone through the DIRMAINT config a
couple of times now and double checked everything, loggen onto DATAMOVE
machine and verified the points in the manual. Is there anywhere else I
can look to see what it doesn't like?

DVHBIU3428I Changes made to directory entry RHGI71 have been placed
DVHBIU3428I online.
DVHSCU3519E The command you have issued requires DATAMOVE interaction.
DVHSCU3519E The DATAMOVE machines are not defined or incorrectly
DVHSCU3519E defined.
DVHSMA3212E Unexpected RC= 3519, from: EXEC DVHSSCWU AMDISK 0191 
DVHSMA3212E AUTOG 50 ZVMCMS MR LABEL CMS191

Eric Spencer
Neon Enterprise Software





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Re: Multicast use on a Linux server

[David Kreuter]

Marcy - try doing 2 netstat arp all tcp name of vswitch controller
commands from TCPMAINT at least 1 second apart.  It will report on the
MAC arp table in use.
David



 Original Message 
Subject: Re: Multicast use on a Linux server
From: Marcy Cortes marcy.d.cor...@wellsfargo.com
Date: Tue, January 18, 2011 8:52 pm
To: LINUX-390@VM.MARIST.EDU

Thanks Scott, Philip, and Alan,

That gives me enough info.
Curious though how to map the mac addr to the IP from Linux itself? They
don't show up in arp -n . Would one check at the router?


cdztv17142:~ # netstat -gn (-n being more needed to avoid the dummy dns
names it seems to use).
IPv6/IPv4 Group Memberships
Interface RefCnt Group
--- -- -
lo 6 224.0.75.75
lo 1 224.0.0.1
eth0 3 231.12.10.100
eth0 2 232.133.104.73
eth0 6 224.0.75.75
eth0 3 231.12.10.120
eth0 1 224.0.0.1
lo 1 ff02::1
eth0 1 ff02::1:ff00:1d
eth0 1 ff02::1
cdztv17142:~ # ip maddress show
1: lo
 inet 224.0.75.75 users 6
 inet 224.0.0.1
 inet6 ff02::1
3: eth0
 link 01:00:5e:0c:0a:64
 link 01:00:5e:05:68:49
 link 01:00:5e:00:4b:4b
 link 01:00:5e:0c:0a:78
 link 01:00:5e:00:00:01
 link 33:33:ff:00:00:1d
 link 33:33:00:00:00:01
 inet 231.12.10.100 users 3
 inet 232.133.104.73 users 2
 inet 224.0.75.75 users 6
 inet 231.12.10.120 users 3
 inet 224.0.0.1
 inet6 ff02::1:ff00:1d
 inet6 ff02::1

cdztv17142:~ # vmcp q nic details
Adapter 3000.P00 Type: QDIO Name: UNASSIGNED Devices: 3
 MAC: 02-00-0E-00-00-1D VSWITCH: SYSTEM TEEVSW2
 RX Packets: 16796364 Discarded: 0 Errors: 0
 TX Packets: 16719487 Discarded: 0 Errors: 0
 RX Bytes: 3939902212 TX Bytes: 3213555193
 Connection Name: HALLOLE State: Session Established
 Device: 3000 Unit: 000 Role: CTL-READ
 Device: 3001 Unit: 001 Role: CTL-WRITE
 Device: 3002 Unit: 002 Role: DATA vPort: 0089 Index: 0089
 VLAN: 0770
 Options: Ethernet Broadcast
 Unicast MAC Addresses:
 02-00-0E-00-00-1D
 Multicast MAC Addresses:
 01-00-5E-00-00-01
 01-00-5E-00-4B-4B
 01-00-5E-05-68-49
 01-00-5E-0C-0A-64
 01-00-5E-0C-0A-78
 33-33-00-00-00-01
 33-33-FF-00-00-1D


Marcy

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Re: VSWITCH for z/vm tcpip

[David Kreuter]

Hi - remove or comment out the ATTACH tag in your SYSTEM DTCPARMS.  The
nicdef statement in the tcpip directory entry is taking care of business
by defining a vnic at addresses 600-602 and coupling it to vswitch vsw1.
 Take this opportunity to remove class B privileges from TCPIP too.
David


 Original Message 
Subject: VSWITCH for z/vm tcpip
From: Sergey Korzhevsky s_korzhev...@iba.by
Date: Mon, January 03, 2011 12:18 pm
To: LINUX-390@VM.MARIST.EDU

Hi All,

 Could you, please, help me define vswitch for linuxes AND z/VM TCPIP.

At first, i created all tcp/ip configuration with 'ipwizard' and real
OSA
addresses and it worked fine. Now, i would like to move to VSWITCH.

The OSA is 010, i made the following changes in system config:

DEFINE VSWITCH VSW1 RDEV 010
MODIFY VSWITCH VSW1 GRANT TCPIP

for user TCPIP:

NICDEF 600 TYPE QDIO LAN SYSTEM VSW1

I also changed TCPIP PROFILE accordingly

DEVICE d...@0600 OSD 0600 NONROUTER
LINK ETH0 QDIOETHERNET d...@0600 MTU 1500 IP

BUT, my concern is file SYSTEM DTCPARMS:

:nick.TCPIP :type.server
 :class.stack
 :ATTACH.0600-0602

During IPL, TCPIP tries to attach device 0600, fails and stop working.

TCP:

NIC 0600 is created; devices 0600-0602 defined
z/VM Version 6 Release 1.0, Service Level  (64-bit),

skip

DTCRUN1022I Console log will be sent to default owner ID: TCPMAINT
HCPCPS040E Device 0600 does not exist
DTCRUN1001E CP VARY ON 0600-0602 failed with return code 40
DTCRUN1099E Server not started - correct problem and retry
DTCRUN1019I Server will not be logged off because you are connected


This is controller:

q vswitch
VSWITCH SYSTEM VSW1 Type: VSWITCH Connected: 0 Maxconn: INFINITE
 PERSISTENT RESTRICTED NONROUTER Accounting: OFF
 VLAN Unaware
 MAC address: 02-00-01-00-00-01
 State: Ready
 IPTimeout: 5 QueueStorage: 8
 Isolation Status: OFF
 RDEV: 0010.P00 VDEV: 0010 Controller: DTCVSW1
Ready; T=0.01/0.01 11:11:12


Thank you.




 WBR, Sergey

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Re: HCPGIR450W and HCPGIR453W after editing user direct

[David Kreuter]

  
Hi - do a Q SET.  If you are in MACH XC do SET MACH ESA and attempt the
IPL again.
If you set the storage sizes back to the original in the USER DIRECT
what results do you get?
 
David
 
 Original Message 
Subject: Re: HCPGIR450W and HCPGIR453W after editing user direct
From: Berry van Sleeuwen berry.vansleeu...@xs4all.nl
Date: Thu, November 04, 2010 7:57 pm
To: LINUX-390@VM.MARIST.EDU

Are you even running DIRMAINT? I guess not, since you use a directory on
MAINT. But if you are then it could be your directory is now replaced
with an old (probably incorrect) version.

Actually you didn't need to IPL VM. Once you put the directory online it
is available. So delete the IPL step from the instruction. Or change the
instruction, do not IPL VM, IPL the guest (either xautolog or logon).

Just guessing here, I'd expect that you do not have all required DASD
attached to SYSTEM after the IPL. Look at the guest minidisk config in
the DIRECT USER. All volumes should be available. For instance:

MDISK 100 3390   VMVOL1 MR

Disk 100 is located on volume VMVOL1. So VMVOL1 should be attached to
system. QUERY DASD VMVOL1. If not, ATTACH  SYSTEM. Perhaps the
100 disk is available but the 101 is missing. Just check all MDISK
statements.

Look at the free and offline DASD volumes. QUERY DASD FREE and QUERY
DASD OFFLINE. Any volume that is needed in this VM should be attached
to system instead of free.

Hope this helps.
Regards, Berry.


Op 04-11-10 23:25, koray schreef:
 Hi Pieter,

 i logged in as MAINT user and run x direct user c command.
 then edited the file, saved, run the command diskmap user, run the
 command x user diskmap and searched for overlaps. And there was no
 overlap.
 Then executed directxa user and re-ipled Z/VM.

 This is the procedure which our Z/VM guy wrote to me and im the Linux
 guy.So i dont know if it was a source directory or parts of a segmented
 directory on DIRMAINT disks. Our Z/VM has left the company some time
 ago, and we dont have one yet.
 Due to ipl didnt work us, we executed a POR (power on reset) and saw a
 hardware message about FICON Channel Error, Lost of Light or something.
 So we thought maybe it's a hardware failure. But i dont know how to be
 sure about that.

 There is also one weird thing, we re-configured all guests memory
 settings, but some guests still run properly some doesnt ipl.

 Regards

 On 05.11.2010 00:14, Harder, Pieter wrote:
 Can you describe in more detail what you exactly did?
 I hope you are talking about manually changing a monolithic source
 directory and not parts of a segmented directory on DIRMAINT disks?
 If the latter that won't work and there is a fair chance you
 clobbered your directory. In that case I hope you have a recent
 monlithic source directory to recover or you could be in for some
 trouble.
 After you made the changes I assume you also manually ran DIRECTXA
 against it? If not your changes are not active and you can simply
 logoff/logon you guest to get back to the old config.

 best regards,
 Pieter Harder

 
 Van: Linux on 390 Port [linux-...@vm.marist.edu] namens koray
 [nixst...@gmail.com]
 Verzonden: donderdag 4 november 2010 20:31
 Aan: LINUX-390@VM.MARIST.EDU
 Onderwerp: HCPGIR450W and HCPGIR453W after editing user direct

 Hello all,

 We have 14 Sles Guests running on Z/VM 5.4. We edited the user direct
 file and changed the memory settings of Linux guests.For example;

 linux001 - 2048M 4096M
 linux002 - 2048M 4096M
 has changed to
 linux001 - 3072M 6144M
 linux002 - 1024M 2048M

 Now, i cant ipl my guest's. When i try to ipl from minidisk 100,
 linux 001 says:
 HCPGIR453W CP Entered, program interrupt loop.
 linux002 says:
 HCPGIR450W CP entered, disabled wait PSW 00020001 8000 
 001536B0

 It seems disk mapping are broken but i'm totally sure that i only
 changed Memory settings, not touched minidisk settings.

 Need your help please.

 Regards

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Re: How to convince others. Was: Re: mono keep guest active - ban the blips.

[David Kreuter]

Are Nagios and local scripts waking up needlessly? or are they doing
legitimate work even if it is wasteful?
David Kreuter


 Original Message 
Subject: How to convince others. Was: Re: mono keep guest active - ban
the blips.
From: Berry van Sleeuwen berry.vansleeu...@xs4all.nl
Date: Thu, August 19, 2010 3:49 pm
To: LINUX-390@VM.MARIST.EDU

That's a good way to make things clear. Especially to management.

Here is a challenge. We are in the process of enrolling new machines
into production. Part of that is that they want to force us to install a
general monitoring tool (nagios and local scripting). We noticed quite a
dramatic increase in resource usage. CPU at least doubles and the guests
all go to Q3. Upon our comments on wasting resources, poorer storage
handling etc. management responds so then we have to buy storage. So
we now have to write a bussinesscase why we NOT should increase storage
to handle the load. What are convincing arguments? After a few years of
discussing this over and over again I'm out of ideas.

Thanks, Berry.


Op 17-08-10 23:35, Barton Robinson schreef:
 The reason these blips are so virtual unfriendly - think about poor
 old z/vm storage management. We need to steal some pages for some real
 work going on. Do we steal it from the server doing real
 transactions? or from the one that is blipping? oops, we can't tell
 the difference.


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Re: mono keep guest active

[David Kreuter]

The non-hostile list is quite short unfortunately. For the most part
Oracle is not hostile and queue drops nicely.
Getting vendors including IBM to:
1. acknowledge the problem is hard. 

2. once acknowledged repairing (woops, I mean adding a feature) doesn't
happen quickly or for that matter often.

In my view it is not criminal or heretic for code to acknowledge its
virtual surroundings.  But lots of apps people think otherwise.

People we just want all our virtual machine children to play and share
nicely. Give up when you do not have actual work, you will get your turn
when needed, really you will. Is that too much to ask?
David Kreuter



 Original Message 
Subject: Re: mono keep guest active
From: Barton Robinson bar...@vm1.velocity-software.com
Date: Tue, August 17, 2010 11:11 am
To: LINUX-390@VM.MARIST.EDU

Yes, this is a problem. We call it virtual hostile. Rob van der Heij
has been doing a tremendous amount of research in this area for the last
4 years, we've been trying to educate our customers (and IBM) on what
this means.

Back in 2001, there was the Linux timer, had the same problem. Got that
fixed. This is the same problem. Only originally because the CPU was
so slow, it was seen as a CPU problem. With much faster CPUs now, this
is a storage problem. There are ways to alleviate the storage problem
in our research. The list of virtually hostile software is quite long.

van Sleeuwen, Berry wrote:
 Hi listers,

 We have configured a SLES11 SP1 with apache and mono. When we start the
 httpd the server is active all the time, keeping it in Q3 all the time.
 We have determined that indeed the mono module is the cause for the
 wakeup of the guest. Powertop shows that 50%-65% of the time mono was
 responsible for wakeup-from-idle and when we remove mono the guest drops
 from queue.

 We have been looking at some options at this time.

 First we have changed KeepAlive too Off in server-tuning.conf, but no
 luck.

 Next we have created a new configuration for mono in the
 /etc/apache2/conf.d directory to replace the default mod_mono.conf.

 # note, this config has been created using an online tool to create
 configfiles... we added LoadModule and MONO_MANAGED_WATCHER.

 LoadModule mono_module /usr/lib64/apache2/mod_mono.so
 Alias /sds /srv/www/htdocs/sds
 MonoServerPath sds /usr/bin/mod-mono-server2
 MonoSetEnv sds MONO_IOMAP=all;MONO_MANAGED_WATCHER=disable
 MonoApplications sds /sds:/srv/www/htdocs/sds
 Location /sds
 Allow from all
 Order allow,deny
 MonoSetServerAlias sds
 SetHandler mono
 SetOutputFilter DEFLATE
 SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
 /Location
 IfModule mod_deflate.c
 AddOutputFilterByType DEFLATE text/html text/plain text/xml
 text/javascript
 /IfModule

 I had found a reference for the MONO_MANAGED_WATCHER that should be set
 to disable to prevent mono from watching (polling) for filesystem
 updates. But this also has no effect, though I don't know for sure if
 this config is really what it should be.

 But all this did not yet give us a guest that drops out of queue, it
 still remains in Q3. Any ideas what can we do to reduce the activity of
 this guest?


 Met vriendelijke groet/With kind regards,
 Berry van Sleeuwen
 Flight Forum 3000 5657 EW Eindhoven

 ( +31 (0)6 22564276





 Atos Origin http://www.atosorigin.com/

 MO CF SC Mainframe Services





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Re: mono keep guest active

[David Kreuter]

Pat - sure, any intelligent code paths will help.  Certainly in a
virtualized environment including but not limited to system z resources
are being shared intensely.  The q4 problem (maybe I should trademark
it!) -- errant q3 -- is insidious and damaging.  

These aren't grandpa's CMS machines with small working set sizes.  The
machines which are waking up needlessly due to application layer code
typically have very large WSSes. So regardless of path length you have
these virtual beasts competing against each other and legit work
inducing unneeded paging, storage management, etc.
And what is most expensive dollar resource? Unless you are getting the
deal of the millennium it's system Z memory, not the IFLs.

In general I have found you cannot tune your way out this with SRM
values or other CP settings.  Keeping your Linux virtual machine size as
small as you can while providing decent service is advisable, but it
doesn't keep them out of q4. A large DASD paging farm and appropriate
xstore values helps contain this but it not a fix.

I fail to see why applications are reluctant to determine what
environment they are in and make decisions accordingly. I know and
understand the rationale behind agnostic code but the entire system z
solution for Linux is being hurt by this.

It just seems unreasonable for any IBM product to be insensitive to
running in a virtual machine.  The kernel certainly knows, hey, it even
announces it at boot time!
David Kreuter


 Original Message 
Subject: Re: mono keep guest active
From: Patrick Spinler spinler.patr...@mayo.edu
Date: Tue, August 17, 2010 5:51 pm
To: LINUX-390@VM.MARIST.EDU

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

David Kreuter wrote:
 The non-hostile list is quite short unfortunately. For the most part
 Oracle is not hostile and queue drops nicely.
 Getting vendors including IBM to:
 1. acknowledge the problem is hard.

 2. once acknowledged repairing (woops, I mean adding a feature) doesn't
 happen quickly or for that matter often.

 In my view it is not criminal or heretic for code to acknowledge its
 virtual surroundings. But lots of apps people think otherwise.

 People we just want all our virtual machine children to play and share
 nicely. Give up when you do not have actual work, you will get your turn
 when needed, really you will. Is that too much to ask?
 David Kreuter


It seems to me that this issue has certain parallels to the current and
long running debate about linux kernel power management hacks targeting
embedded devices (e.g. android wake locks)

Specifically -- applications are very frequently crappy, and fixing them
all, or even a significant fraction of them, is significantly unlikely.
 Ergo, what, if anything, could a linux kernel do to reign in
misbehaving apps?

Android's answer is to sleep regardless of what the apps say, with a
privilege limited mechanism that blocks sleeping. Privs are only
granted to apps the admin (or android packager) deems truely critical
like the radio / phone apps.

Would some similar sort of mechanism help for virtualization?
(complete, uninformed speculation here) Perhaps a kernel mechanism to
limit wakeups in the case that no cpu is seen to be consumed, or the
like?

- -- Pat

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Version: GnuPG v1.4.9 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkxrBHsACgkQNObCqA8uBswOzwCeN8Sdm59uWxiJXRJiYT60FYX7
4h8AnixYLgrj2+uGx4O2DgD4yI9ornI+
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Re: PSW 000A0000 00000100

[David Kreuter]

Wouldn't a class G SYSTEM RESET CLEAR prior to the IPL reset the i/o
status and hence let the IPL sequence go forward? Or is it too far down
the wrong road?
David Kreuter

 Original Message 
Subject: Re: PSW 000A 0100
From: Pat Carroll pcarr...@llbean.com
Date: Tue, June 29, 2010 3:35 pm
To: LINUX-390@VM.MARIST.EDU

Mark,
Since he's using a dedicated boot disk, would it help (in the meantime)
if there's a forced delay between virtual machine creation time and
Linux IPL command (i.e, sleep 5)? 


Patrick Carroll | Technology Architect II 
L.L.Bean, Inc.(r) | Double L St. | Freeport ME 04033 
http://www.llbean.com | pcarr...@llbean.com | 207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
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solely for the use of the intended recipient(s). Any disclosure,
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sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Mark Post
Sent: Tuesday, June 29, 2010 2:54 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: PSW 000A 0100

 On 6/29/2010 at 01:15 PM, karlkings...@ongov.net wrote: 
 Was trying to look at the Bugzilla report for this and get an access
 denied Am I not allowed to see the report?

No, it's been restricted to the reporter and Novell employees. What I
can tell you is that the bug is fixed in the SLES10 SP3 series of
s390-tools. Since SLES10 SP2 and earlier are out of support, there will
be no fix provided for them.

The patch description, which will eventually end up on IBM's
developerWorks web site, shows this:
Description: zipl: handle status during ipl
Symptom: You encounter an error during IPL with disabled wait
message.
Problem: During the IPL sequence the subchannel of the IPL device
has
 to be enabled. If there is a status pending or busy
condition
 on the subchannel the IPL code abborts the IPL and goes
into
 disabled wait.
Solution: To resolve the problem the IPL code accepts the status
pending
 or busy condition on the subchannel and does up to 256
retries.
Problem-ID: 57775

If you download the source RPM for the SLES10 SP3 s390-tools, you'll
also be to see the same description in the
s390-tools-sles10-zipl-handle-status-during-ipl.patch file included
there (typos and all).


Mark Post

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Re: PSW 000A0000 00000100

[David Kreuter]

well u can always code something similar to:

hex15 = '15'x
'CP SYSTEM RESET CLEAR'hex15'IPL  '

 Original Message 
Subject: Re: PSW 000A 0100
From: Pat Carroll pcarr...@llbean.com
Date: Tue, June 29, 2010 3:53 pm
To: LINUX-390@VM.MARIST.EDU

Good thought, but if this is automated (via an exec) a reset clear will
probably blow away the exec ;)


Patrick Carroll | Technology Architect II 
L.L.Bean, Inc.(r) | Double L St. | Freeport ME 04033 
http://www.llbean.com | pcarr...@llbean.com | 207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
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sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
David Kreuter
Sent: Tuesday, June 29, 2010 3:49 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: PSW 000A 0100

Wouldn't a class G SYSTEM RESET CLEAR prior to the IPL reset the i/o
status and hence let the IPL sequence go forward? Or is it too far down
the wrong road?
David Kreuter

 Original Message 
Subject: Re: PSW 000A 0100
From: Pat Carroll pcarr...@llbean.com
Date: Tue, June 29, 2010 3:35 pm
To: LINUX-390@VM.MARIST.EDU

Mark,
Since he's using a dedicated boot disk, would it help (in the meantime)
if there's a forced delay between virtual machine creation time and
Linux IPL command (i.e, sleep 5)? 


Patrick Carroll | Technology Architect II L.L.Bean, Inc.(r) | Double L
St. | Freeport ME 04033 http://www.llbean.com | pcarr...@llbean.com |
207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
confidential information that is legally privileged. The information is
solely for the use of the intended recipient(s). Any disclosure,
copying, distribution, or other use of this information is strictly
prohibited. If you have received this e-mail in error, please notify the
sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Mark Post
Sent: Tuesday, June 29, 2010 2:54 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: PSW 000A 0100

 On 6/29/2010 at 01:15 PM, karlkings...@ongov.net wrote: 
 Was trying to look at the Bugzilla report for this and get an access 
 denied Am I not allowed to see the report?

No, it's been restricted to the reporter and Novell employees. What I
can tell you is that the bug is fixed in the SLES10 SP3 series of
s390-tools. Since SLES10 SP2 and earlier are out of support, there will
be no fix provided for them.

The patch description, which will eventually end up on IBM's
developerWorks web site, shows this:
Description: zipl: handle status during ipl
Symptom: You encounter an error during IPL with disabled wait
message.
Problem: During the IPL sequence the subchannel of the IPL device has
to be enabled. If there is a status pending or busy condition on the
subchannel the IPL code abborts the IPL and goes into disabled wait.
Solution: To resolve the problem the IPL code accepts the status pending
or busy condition on the subchannel and does up to 256 retries.
Problem-ID: 57775

If you download the source RPM for the SLES10 SP3 s390-tools, you'll
also be to see the same description in the
s390-tools-sles10-zipl-handle-status-during-ipl.patch file included
there (typos and all).


Mark Post

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Re: Linux on Z networking issue

[David Kreuter]

The vswitch can be vlan aware with Linux connecting on access ports,
that's legit.  The vswitch is then solely responsible for vlan packet
insertion and removal.

So adapter scenario 3 is a disconnected vswitch on layer 2.

On adapter 2 if you remove the real OSA devices can you communicate
between the virtual Linux machines?
One piece of advise would be to check the microcode levels of your osa
devices.  There are some anomalies with sharing layer 2 and 3 traffic
corrected on recent microcode updates.  Although you are not sharing
layer 2 and 3 it worth a shot as perhaps the MCL corrected other layer 2
problems as well.

Just to confirm with the output from lsqeth that you are using layer2?
And the layer 2 vswitch is defined as TYPE ETHERNET ?


What does the output of NETSTAT ARP ALL TCP vswitch controller machine
name inserted here  show? And you need to this command twice, breath in
between.

David Kreuter



 Original Message 
Subject: Re: Linux on Z networking issue
From: Pat Carroll pcarr...@llbean.com
Date: Fri, June 04, 2010 3:12 pm
To: LINUX-390@VM.MARIST.EDU

If you're doing vlan tagging you need to configure as a trunk port 


Patrick Carroll | Technology Architect II 
L.L.Bean, Inc.(r) | Double L St. | Freeport ME 04033 
http://www.llbean.com | pcarr...@llbean.com | 207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
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solely for the use of the intended recipient(s). Any disclosure,
copying, distribution, or other use of this information is strictly
prohibited. If you have received this e-mail in error, please notify the
sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Peter Pauer
Sent: Friday, June 04, 2010 12:46 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Linux on Z networking issue

We have a customer experiencing difficulties with a s390 Linux under VM
networking

The Linux OS's tried are SuSe 11, SuSe 10.3 and RedHat 5.5

For test purposes on the guests we have defined
 Adapter 1: vswitch 1, layer 3, OSA card
attached. 142.* ip address
 Adapter 2: vswitch 2, vlan aware, port access, layer 2, OSA card
attached 10.* ip address
 Adapter 3: vswitch 3, vlan aware, port access, layer 2, NO OSA
CARD
192.* ip address

Adapter 1: is connected and working correctly between the VM guests and
on the intranet.
Adapter 2: is connected and not working between the VM guests also not
working on the intranet.
Adapter 3: is connected and working between the guests, no physical
connection to the intranet.

Only apparent difference between adapter 2 and adapter 3 is that an OSA
card that is attached to Adapter 2.

Any one have experience with a similar situation/resolution?

Peter

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Re: Linux on Z networking issue

[David Kreuter]

absolutely. It depends on the needs of your Linux networking and your
overall network scheme.  I have Linux machines that need to connect as
trunks and have multiple vlans on one set of nics.  Other configurations
the Linux machines can connect to vlan aware vswitches as access ports
and do not to deal with the vlan tags.

For the most part if the Linux machines can get by with a single network
per nic an access connection to the vswitch will suffice.

David


 Original Message 
Subject: Re: Linux on Z networking issue
From: Pat Carroll pcarr...@llbean.com
Date: Fri, June 04, 2010 3:29 pm
To: LINUX-390@VM.MARIST.EDU

In our case I had to configure as trunk due to the way the network
admins configured the vlan on the physical switch port. I'll try to get
the details from them. 


Patrick Carroll | Technology Architect II 
L.L.Bean, Inc.(r) | Double L St. | Freeport ME 04033 
http://www.llbean.com | pcarr...@llbean.com | 207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
confidential information that is legally privileged. The information is
solely for the use of the intended recipient(s). Any disclosure,
copying, distribution, or other use of this information is strictly
prohibited. If you have received this e-mail in error, please notify the
sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
David Kreuter
Sent: Friday, June 04, 2010 3:20 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux on Z networking issue

The vswitch can be vlan aware with Linux connecting on access ports,
that's legit. The vswitch is then solely responsible for vlan packet
insertion and removal.

So adapter scenario 3 is a disconnected vswitch on layer 2.

On adapter 2 if you remove the real OSA devices can you communicate
between the virtual Linux machines?
One piece of advise would be to check the microcode levels of your osa
devices. There are some anomalies with sharing layer 2 and 3 traffic
corrected on recent microcode updates. Although you are not sharing
layer 2 and 3 it worth a shot as perhaps the MCL corrected other layer 2
problems as well.

Just to confirm with the output from lsqeth that you are using layer2?
And the layer 2 vswitch is defined as TYPE ETHERNET ?


What does the output of NETSTAT ARP ALL TCP vswitch controller machine
name inserted here show? And you need to this command twice, breath in
between.

David Kreuter



 Original Message 
Subject: Re: Linux on Z networking issue
From: Pat Carroll pcarr...@llbean.com
Date: Fri, June 04, 2010 3:12 pm
To: LINUX-390@VM.MARIST.EDU

If you're doing vlan tagging you need to configure as a trunk port 


Patrick Carroll | Technology Architect II L.L.Bean, Inc.(r) | Double L
St. | Freeport ME 04033 http://www.llbean.com | pcarr...@llbean.com |
207.552.2426 

CONFIDENTIALITY NOTICE: This e-mail and any attachments may contain
confidential information that is legally privileged. The information is
solely for the use of the intended recipient(s). Any disclosure,
copying, distribution, or other use of this information is strictly
prohibited. If you have received this e-mail in error, please notify the
sender by return e-mail and delete this message.


-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Peter Pauer
Sent: Friday, June 04, 2010 12:46 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Linux on Z networking issue

We have a customer experiencing difficulties with a s390 Linux under VM
networking

The Linux OS's tried are SuSe 11, SuSe 10.3 and RedHat 5.5

For test purposes on the guests we have defined Adapter 1: vswitch 1,
layer 3, OSA card attached. 142.* ip address Adapter 2: vswitch 2, vlan
aware, port access, layer 2, OSA card attached 10.* ip address Adapter
3: vswitch 3, vlan aware, port access, layer 2, NO OSA CARD
192.* ip address

Adapter 1: is connected and working correctly between the VM guests and
on the intranet.
Adapter 2: is connected and not working between the VM guests also not
working on the intranet.
Adapter 3: is connected and working between the guests, no physical
connection to the intranet.

Only apparent difference between adapter 2 and adapter 3 is that an OSA
card that is attached to Adapter 2.

Any one have experience with a similar situation/resolution?

Peter

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Re: extending an LV

[David Kreuter]

Hi - try modprobe vmcp then the vmcp q v dasd
David


 Original Message 
Subject: Re: extending an LV
From: LJ Mace ljmace1...@yahoo.com
Date: Thu, June 03, 2010 10:22 am
To: LINUX-390@VM.MARIST.EDU

When i enter vmcp... I get could not open device /dev//vmcp. No such
file or directory
Thx
Mace

On Thu Jun 3rd, 2010 10:16 AM EDT Christian Paro wrote:

What about the `vmcp q v dasd`? The lsdasd shows whether the disk has been
set online and is thus visible to Linux as a block device, but the vmcp
command shows whether the disk is currently linked/attached to the guest
containing that Linux instance.

On Thu, Jun 3, 2010 at 10:12 AM, LJ Mace ljmace1...@yahoo.com wrote:

 Yes I logged off,pn,then even rebooted
 I did an lsdasd but 207(the new dasd) isnt shown
 Thx
 Mace

 On Thu Jun 3rd, 2010 9:56 AM EDT Christian Paro wrote:

 What do you see when you do `modprobe vmcp; vmcp q v dasd` and `lsdasd`?
 
 Also, did you do a full log-off/log-on of the guest after adding the disk
 to
 its directory statement? A complete log-off and log-on is necessary to
 make
 the guest's runtime state reflect the changes made to the directory,
 unless
 you're using specific CP commands to perform these changes manually and
 just
 updating the directory to make sure the changes stick when the guest is
 logged off and on in the future.
 
 Or, for that matter, did you attach the disk without updating the guest's
 directory statement? Without updating the directory (either directly or
 through whatever tool you may be using), the disk you attached will only
 remain attached for as long as the guest is logged on - and won't be
 re-attached upon subsequent log-ons.
 
 ~ Chris
 
 On Thu, Jun 3, 2010 at 9:17 AM, LJ Mace ljmace1...@yahoo.com wrote:
 
  I do have notes and I thought all that had to be done was att to the
 guest
  then logon to the guest then yast would indeed see it.
  Thx
  Mace
 
  On Thu Jun 3rd, 2010 8:53 AM EDT Richard Troth wrote:
 
  Larry, I apologize.
  You did mention YaST and YaST should in fact see the disk and should
  then handle all this other magic for you ... automagically. Maybe
  Mark will chime in.
  
  -- R; 
  
  
  
  
  
  
  On Thu, Jun 3, 2010 at 08:25, Macioce, Larry
  larry.maci...@com.state.oh.us wrote:
   I seem to be having a problem.
  
   I have added the pact to the Linux system through VM but when I go
 into
   yast/hardware/dasd to add it there I don't see it
  
   What am I missing?
  
   Thanks
  
   Mace
  
  
  
  
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Re: history data log in performance toolkitt

[David Kreuter]

I use that tool at a client. I feed it into excel and do some decent
charting.
An automated tool ships the data nightly to an ftp server.
David


 Original Message 
Subject: Re: history data log in performance toolkitt
From: Bruce Hayden bjhay...@gmail.com
Date: Thu, April 15, 2010 10:05 am
To: LINUX-390@VM.MARIST.EDU

There is a tool available on the VM web pages. See
http://www.vm.ibm.com/related/perfkit/csvgen.html

On Thu, Apr 15, 2010 at 8:57 AM, Samir Reddahi
samir.redd...@securex.be wrote:
 I'd like to use data out of the ACUM HISTSUM file in an Excel document to
 keep track of the CPU usage on our production z/VM LPAR.

 I have only a basic knowledge of the performance toolkit, does anybody
 have an idea how I could create a csv or flat file with all the data in
 the ACUM HISTSUM or for a specified period of time?


 thanks in advance,

 Samir Reddahi
 System Engineer | Systeem MF, AS400, DBA Operations

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Re: RHEL 5.4 Kickstart

[David Kreuter]

2 Gb or 1 vcpu to install? Really? Why? dragging two virtual CPUs
needlessly through the scheduler seems a tragic waste even on a z/10.
OK, I'm assuming it's needless, is it?
David


 Original Message 
Subject: Re: RHEL 5.4  Kickstart
From: Mark Post mp...@novell.com
Date: Thu, March 04, 2010 9:12 pm
To: LINUX-390@VM.MARIST.EDU

 On 3/4/2010 at 08:48 PM, Lee Stewart lstewart.dsgr...@attglobal.net 
 wrote: 
 Is anyone doing Kickstart installs on RedHat 5.4?
 
 No matter what I tried, it acted as if it wasn't reading the CMS config
 file (for the install network), much less the kickstart file... And
 there don't seem to be any logs or anything else...

There's been some discussion recently about an Anaconda bug that show up
if you have only 1 processor defined or exactly 2GB of storage defined.
What's your system look like?


Mark Post

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Re: OOM-Killer shut down SSh

[David Kreuter]

My experience is with the effects of the OOM killer. Perhaps with Linux
on a desktop it is ok as it may pick on non critical processes but in a
virtual machine server environment it represents a drastic out of
storage condition requiring immediate action. I have seen this a few
times on Oracle servers and some emergency relief in the form of
dynamically adding swap helped but eventually the servers needed to be
rebooted with storage adjustments to virtual machine size and Oracle
SGA.  It was unpleasant, like stopping a broken dam with a stick of gum.

Interestingly enough it has happened twice after applying Oracle
patches! So beware of those patches!
David Kreuter 
VM RESOURCES LTD


 Original Message 
Subject: OOM-Killer shut down SSh
From: Robert Giordano rgio...@us.ibm.com
Date: Mon, January 25, 2010 12:53 pm
To: LINUX-390@VM.MARIST.EDU




Can anyone provide any documentation or opinion on the use and
management
of the OOM-Killer process on SUSE Linux SLES 10 SP1?

Regards
 
 
 
 
 
 Robert 930 Sylvan Ave 
 Giordano 
 
 System z IT Englewood Cliffs, 
 Architect 07632-3301 
 
 IBM Sales  USA 
 Distribution, 
 Software 
 Sales 
 
 Phone: +1-201-607-8047 
 
 Mobile: +1-201-214-7466 
 
 e-mail: rgio...@us.ibm.com 
 


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Re: Moving On: Cross-posted to linux and vm lists

[David Kreuter]

Phil best of luck in your new role and look forward to your posts
David Kreuter


 Original Message 
Subject: Moving On: Cross-posted to linux and vm lists
From: Phil Tully tull...@optonline.net
Date: Tue, December 29, 2009 8:12 pm
To: LINUX-390@VM.MARIST.EDU

To All,

As of January 1, 2010, I will no longer work for IBM.

The past 5 + years have been a rewarding experience for me, but I have
found an opportunity that I could not ignore. The new situation will be
better for me professionally, and personally.

I will continue to work with VM and Linux on Z and will continue to be a
member of both listservs.

With regards to all the customers I have interacted with , Thank You. I
hope you learned half as much as I did.

Phil Tully

--
'in media stat virtus'
Virtue's in the middle

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Re: Waiting for device

[David Kreuter]

Ray: perhaps after the change in pathing that the /dev/disk/by-id/...
changed? Maybe you should try using
/dev/disk/by-path/ccw-.-part1 instead.
David Kreuter


 Original Message 
Subject: Re: Waiting for device
From: Ray Waters ray.wat...@opensolutions.com
Date: Tue, October 27, 2009 1:33 pm
To: LINUX-390@VM.MARIST.EDU

TYPO: added 4 more pats to all s/b added 4 more paths to all

From: Ray Waters
Sent: Tuesday, October 27, 2009 12:32 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Waiting for device

I have a SLES10 system under z/VM 540 I built from the starter system.
It has been running fine for months but I have not brought it up since
August 2009.
Today I brought it up and LINUX will not come up all the way. The only
change I have made was I applied VM RSU0902 a week ago and added 4 more
pats to all of our Hitachi 3390 DASD. No members have even been edited.
No address changes have occurred, but LINUX will not come up. Cannot
figure out what dev/thing it is waiting for.


I did a cat init and found these messages:
echo Loading reiserfs
modprobe reiserfs

# Wait for udev to settle
/sbin/udevsettle --timeout=$udev_timeout
# Check for a resume device
udev_discover_resume

# And now for the real thing
if ! udev_discover_root ; then
 echo not found -- exiting to /bin/sh
 cd /
 PATH=$PATH PS1='$ ' /bin/sh -i
fi


Console log from August 2009:
Loading dasd_fba_mod
 Activating DASDs: 0.0.0150:0dasd(eckd): 0.0.0150: 3390/0A(CU:3990/01)
Cyl:50 Head:15 Sec:224
 dasd(eckd): 0.0.0150: (4kB blks): 36000kB at 48kB/trk compatible disk l
 dasda:VOL1/ 0X0150: dasda1
 0.0.0151:0dasd(eckd): 0.0.0151: 3390/0A(CU:3990/01) Cyl:3283 Head:15
Sec:224
 dasd(eckd): 0.0.0151: (4kB blks): 2363760kB at 48kB/trk compatible disk
 dasdb:VOL1/ 0X0151: dasdb1
 0.0.0152:0dasd(eckd): 0.0.0152: 3390/0A(CU:3990/01) Cyl:3338 Head:15
Sec:224
 dasd(eckd): 0.0.0152: (4kB blks): 2403360kB at 48kB/trk compatible disk
 dasdc:VOL1/ 0X0152: dasdc1
 0.0.0153:0dasd(eckd): 0.0.0153: 3390/0A(CU:3990/01) Cyl:3338 Head:15
Sec:224
 dasd(eckd): 0.0.0153: (4kB blks): 2403360kB at 48kB/trk compatible disk
 dasdd:VOL1/ 0X0153: dasdd1
 0.0.0160:1dasd(fba): 0.0.0160: 9336/10(CU:6310/80) 97MB at(512 B/blk)
 dasde:CMS1/ LXSWAP(MDSK): dasde1
 : done
Loading reiserfs
Waiting for device
/dev/disk/by-id/ccw-HTC.5500010772.0800.3a.00010d0a-part1
to appear: ok
rootfs: major=94 minor=13 devn=24077



Console log of failing LINUX:
Loading dasd_fba_mod
Activating DASDs: 0.0.0150:0dasd(eckd): 0.0.0150: 3390/0A(CU:3990/01) C
yl:50 Head:15 Sec:224
dasd(eckd): 0.0.0150: (4kB blks): 36000kB at 48kB/trk compatible disk
layout
 dasda:VOL1/ 0X0150: dasda1
 0.0.0151:0dasd(eckd): 0.0.0151: 3390/0A(CU:3990/01) Cyl:3283 Head:15
Sec:224
dasd(eckd): 0.0.0151: (4kB blks): 2363760kB at 48kB/trk compatible disk
 dasdb:VOL1/ 0X0151: dasdb1
 0.0.0152:0dasd(eckd): 0.0.0152: 3390/0A(CU:3990/01) Cyl:3338 Head:15
Sec:224
dasd(eckd): 0.0.0152: (4kB blks): 2403360kB at 48kB/trk compatible disk
 dasdc:VOL1/ 0X0152: dasdc1
 0.0.0153:0dasd(eckd): 0.0.0153: 3390/0A(CU:3990/01) Cyl:3338 Head:15
Sec:224
dasd(eckd): 0.0.0153: (4kB blks): 2403360kB at 48kB/trk compatible disk
 dasdd:VOL1/ 0X0153: dasdd1
 0.0.0160:1dasd(fba): 0.0.0160: 9336/10(CU:6310/80) 97MB at(512 B/blk)
 dasde:CMS1/ LXSWAP(MDSK): dasde1
 : done
Loading reiserfs
Waiting for device /dev/disk/by-id/ccw-HTC.5500010772.0800.
3a.00010d0a-part1 to appear: .
.
.not found -- exiting to /bin/sh
$

.00: cp q v da
00: DASD 0104 3390 540W03 R/O 20 CYL ON DASD 08A0 SUBCHANNEL = 0010
00: DASD 0150 3390 LNX270 R/W 50 CYL ON DASD 0270 SUBCHANNEL = 0002
00: DASD 0151 3390 LNX270 R/W 3283 CYL ON DASD 0270 SUBCHANNEL = 0003
00: DASD 0152 3390 LNX34C R/W 3338 CYL ON DASD 034C SUBCHANNEL = 0004
00: DASD 0153 3390 LNX83A R/W 3338 CYL ON DASD 083A SUBCHANNEL = 0005
00: DASD 0160 9336 (VDSK) R/W 20 BLK ON DASD VDSK SUBCHANNEL = 0012
00: DASD 0190 3390 540RES R/O 107 CYL ON DASD 025E SUBCHANNEL = 000D
00: DASD 0191 3390 540W03 R/O 10 CYL ON DASD 08A0 SUBCHANNEL = 
00: DASD 019D 3390 540W01 R/O 146 CYL ON DASD 03C8 SUBCHANNEL = 000E
00: DASD 019E 3390 540W01 R/O 250 CYL ON DASD 03C8 SUBCHANNEL = 000F
00: DASD 019F 3390 LNXBD3 R/O 50 CYL ON DASD 0BD3 SUBCHANNEL = 0001
00: DASD 0592 3390 540W02 R/O 70 CYL ON DASD 088E SUBCHANNEL = 0011



Ray Waters


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Re: RHEL 5.4 Released

[David Kreuter]

much longer.

CMM-1/VMRM in my view should only be exploited for non-production Linux
virtual machines.  It has a tendency to be too punishing on its' victim,
er, target virtual machines.  In my usage it really seems to give up
tremendous amount of pages, hence when a targeted machine becomes active
again, whether seconds, minutes, or hours later there can be a painful
response lag gettin' all those pages back in. So I recommend not using
CMM-1 for production payloads.

The safest storage management approach is to analyze your Linux machine
storage demands, adjust it to light swapping rates under load, and give
it several vdisks for swapping of cascading priority.  This is anodyne
and yields the best results.

Over time I'm expecting CMM-1/VMRM to do great things.  Then again I was
bullish on CMM2's possibilities, heck, using the storage key to describe
usage and then have the virtual o.s. tell CP was in my mind real clever.
 But there you have it.

David Kreuter 


    Original Message 
 Subject: RHEL 5.4 Released
 From: Shawn Wells s...@redhat.com
 Date: Sun, September 06, 2009 1:02 pm
 To: LINUX-390@VM.MARIST.EDU
 
 All -
 
 On Tuesday 1-SEPT we released RHEL 5.4, which marks a significant
 milestone for the System z platform at Red Hat. By enhancing our
 Engineering process via additional dedicated System z headcount, and by
 procedural changes, we have been able to backport significant System z
 hardware exploitation code from upstream kernels into RHEL5.
 Historically Red Hat has been known for a slight lag behind other Linux
 vendors (avg of 3-6 months), which is something that was specifically
 addressed in this release. Several features now included in RHEL5 have
 not yet made it into other Linux distributions -- and while that's
great
 for marketing -- it's the first publicly visible reflection of internal
 changes we've made. A lot of work went into the release, and I'm proud
 to say that we now fully support NSS. This was, in my view, the number
 one requested feature.
 
 
 With RHEL 5.4, the System z highlights are below. Full release
 notes can be found at:
 
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html-single/Release_Notes/
 
 
 
 - Utilizing Named Saved Segments (NSS), the z/VM hypervisor makes
 operating system code in shared real memory pages available to z/VM
 guest virtual machines. With this update, multiple Red Hat Enterprise
 Linux guest operating systems on the z/VM can boot from the NSS and be
 run from a single copy of the Linux kernel in memory. (BZ#474646)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=474646
 
 - Device driver support has been added in this update for the new
 IBM System z PCI cryptography accelerators, utilizing the same
 interfaces as prior versions. (BZ#488496)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=488496
 
 - Red Hat Enterprise Linux 5.4 adds support for processor
 degradation, which allows processor speed to be reduced in some
 circumstances (i.e. system overheating). (BZ#474664)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=474664 This new
 feature allows automation software to observe the machine state and act
 based on defined policies.
 
 - Control Program Identification (CPI) descriptive data is used to
 identify individual systems on the Hardware Management Console (HMC).
 With this update, CPI data can now be associated with a Red Hat
 Enterprise Linux instance. (BZ#475820)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=475820. For more
 information on CPI refer to the Device Drivers, Features, and Commands
 document
 
http://www.ibm.com/developerworks/linux/linux390/development_documentation.html
 
 - Fibre Channel Protocol (FCP) performance data can now be measured
 on Red Hat Enterprise Linux instances on the IBM System z platform.
 (BZ#475334)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=475334 Metrics
 that are collected and reported on include:
 
 * Performance relevant data on stack components such as Linux
 devices, Small Computer System Interface (SCSI) Logical Unit Numbers
 (LUNs) and Host Bus Adapter (HBA) storage controller information.
 
 * Per stack component: current values of relevant measurements
 as throughput, utilization and other applicable measurements.
 
 * Statistical aggregations (minimum, maximum, averages and
 histogram) of data associated with I/O requests including size, latency
 per component and totals.
 
 - Support has been added to the kernel to issue EMC Symmetrix
 Control I/O. This update provides the ability to manage EMC Symmetrix
 storage arrays with Red Hat Enterprise Linux on the IBM System z
 platform. (BZ#461288)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=461288
 
 - A new feature has been implemented in the kernel to perform an
 Initial Program Load (IPL) on a Red Hat Enterprise Linux virtual
machine
 immediately following a kernel panic and dump.(BZ#474688)
 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id

Re: OSPF VSWITCH

[David Kreuter]

I'm not sure how you are planning on accomplishing this goal.
Usually a vipa device is defined with the ip address you wish to reach
regardless of the route to get there.
You haven't done this, are you intending to create a vipa?

In your ospfd.conf this statement:
ospf router-id 172.31.147.5
defines a router id in your area (0.0.0.146) at 172.31.147.5.  It is not
a network or an ip address, it just uses the
same notation to describe a unique 32-bit router id.

Also in ospfd.conf you haven't defined a link interface for your 172.
interface so ospfd doesn't know about it.
try adding:
network 172.31.147.0/24 area 0.0.0.146

Of course you have started zebra and ospfd with service zebra start and
service ospfd start - or some other way?

David Kreuter

 Original Message 
Subject: Re: OSPF  VSWITCH
From: Bruce Furber bfur...@comcast.net
Date: Fri, June 26, 2009 8:28 am
To: LINUX-390@VM.MARIST.EDU

SLES10 SP2

Thanks David

I am confused about how to set it up. Right now I get this from ospfd.

show ip ospf neighbor all
 OSPF Routing Process not enabled

The zLinux machine has eth0 172.31.147.5 connected through a vswitch to
our cisco 6509.
I need to have OSPF advertise 216.113.146.101 as an alternate address
for the machine.

What parms  addresses do I put in the quagga daemon files? Are there
another places to check?

zebra.conf
interface eth0
 ip address 172.31.147.5/24
 multicast
 ipv6 nd suppress-ra
!
interface lo
!
interface sit0
 ipv6 nd suppress-ra


ospfd.conf
interface eth0
!
interface lo
!
interface sit0
!
router ospf
 ospf router-id 172.31.147.5
 passive-interface default
 no passive-interface eth0
 network 216.113.146.101/32 area 0.0.0.146



- David Boyes dbo...@sinenomine.net wrote:

 Yes. OSPF is just a payload on a normal IP packet. I'd suggest layer 2
 for the VSWITCH to permit easier use of the OSPF multicast component,
 but it will work fine without it.


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Re: Install or Rescue a SLES10 system from FTP, using LAYER2 and VLAN

[David Kreuter]

  
Dominic and I do all our installs on a multiLPAR system from 1 LPAR,
populate it, harden it, etc and then whip it into application readiness.
 Then it serves as a model from which we copy to other lpars. Something
like that.
We're mandated to do our installs from 1 LPAR.
 
David

 Original Message 
Subject: Re: Install or Rescue a SLES10 system from FTP, using LAYER2
and VLAN
From: Dominic Coulombe dominic.coulo...@gmail.com
Date: Wed, April 22, 2009 7:24 pm
To: LINUX-390@VM.MARIST.EDU

On Wed, Apr 22, 2009 at 16:50, Mark Post mp...@novell.com wrote:


 If you're talking about accessing an FTP server to get to the rest of the
 rescue system and complete things, then your question makes some sense.

Yes, that's exactly what I had in mind. Sorry for the confusion.



 But, since you're running on z/VM, why would you need to go outside the
 LPAR to access an FTP server?

We have only one FTP server hosting installation sources for all our
LPARs.
Fresh installations are always done in the LPAR that contains the FTP
server.


By telling me that the installer does not support 802.1q, you are
confirming
what I was suspecting.


Maybe we should put the installation media on a separate disk, then
connect
the disk to the system we need to rescue.

Thanks for your input.

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Re: VSWITCH and OSPF setup

[David Kreuter]

wrong David you want David Boyes but I do have done work in linux with quagga 
for ospf.
Maybe I can be of help, too.



From: Linux on 390 Port on behalf of Eli Dow
Sent: Fri 3/6/2009 10:33 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: VSWITCH and OSPF setup



Hi David,


I am actually working on a white paper about ospf use for Linux on z/VM.
I would be interested to see your paper to compare methodologies.





On Fri, 2009-03-06 at 09:33 -0500, David Boyes wrote:
 I'll send you our reference design doc for this. If anyone else would like 
 this, let me know off list and I'll see about posting it.



 On 3/5/09 6:09 PM, Spann, Elizebeth (Betsie) bsp...@visa.com wrote:

 Hi All,
 I'm looking for advice on converting from static IP on my VM stack to
 OSPF.  I think I will need to go to two VSWITCHes rather than just the
 one I use for static IP.  I've created a simple PowerPoint to
 illustrate.

  OSPF -1.ppt
 All advice welcomed.
 Betsie

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Re: VSWITCH and OSPF setup

[David Kreuter]

what do you mean by:
OSA1
10.55.27.33
 
Is 10.55.27.33 an ip address in a host attached to a physical switch?
David
 
 



From: Linux on 390 Port on behalf of Spann, Elizebeth (Betsie)
Sent: Thu 3/5/2009 6:09 PM
To: LINUX-390@VM.MARIST.EDU
Subject: VSWITCH and OSPF setup



Hi All,
I'm looking for advice on converting from static IP on my VM stack to
OSPF.  I think I will need to go to two VSWITCHes rather than just the
one I use for static IP.  I've created a simple PowerPoint to
illustrate.

 OSPF -1.ppt
All advice welcomed. 
Betsie

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Re: Missing DASD cylinders. DASD corrupted?

[David Kreuter]

Hi: You asked for a minidisk at virtual address 100 starting at cylinder 51 for 
3,338 cylinders, taking us to cylinder 3,388. There are only 3,338 cylinders on 
a 3390-03 DASD.
If you CHANGED the mdisk statement to mdisk  3390 0051 156  MV0405 MR READ 
WRITE MULTIPLE
You assigned a mdisk of 156 cylinders starting at cylinder 51, so u just space 
allocated cylinder 51 to 206 on the 3390-03 volume.
 
David Kreuter 




From: Linux on 390 Port on behalf of Kok Leong Chan
Sent: Sun 2/1/2009 10:53 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Missing DASD cylinders. DASD corrupted?



Hi,

Thanks Dave (Jonathan and Bernie too)  for the hints. Yes, you're all
correct, I do have a virtual/real address issue.
But something about this still escapes me:

As the MAINT user, I have a virtual dasd at 0405:

 q v 405
 DASD 0405 3390 540W01 R/W156 CYL ON DASD  0403 SUBCHANNEL = 003

I also have a real dasd at 0405 and the volume serial is MV0405:

 q dasd details 0405
 0405  CUTYPE = 2107-E8, DEVTYPE = 3390-0A, VOLSER = MV0405, CYLS = 3339
CACHE DETAILS:  CACHE NVS CFW DFW PINNED CONCOPY
 -SUBSYSTEM   YY   Y   -N   N
-DEVICE   Y-   -   YN   N
DEVICE DETAILS: CCA = 65, DDC = --
DUPLEX DETAILS: --
   CU DETAILS: SSID = 0085, CUNUM = 0001


Now in the USER DIRECT entry for user LINUX1, there's a MDISK for virtual
DASD 100:

 USER LINUX1 LINUX1 1024M 1024M g
  INCLUDE LINDFLT
  MDISK 191 3390 0001 050 MV0405 MR READ WRITE MULTIPLE
  MDISK 100 3390 0051 3338 MV0405 MR READ WRITE MULTIPLE
  MDISK 101 3390 0001 3338 MV0406 MR READ WRITE MULTIPLE

When I logon as LINUX1, I see this:

 LOGON LINUX1
 00: HCPLNM1151E LINUX1 0100 has not been linked because it is not within
CP volme extents.

And guest LINUX1 won't have a virtual DASD at 100.

After some testing,  virtual DASD 0100 will link when I set the cylinder
range to be 51 to 156 instead.
It seems that LINUX1 doesn't get the real DASD 0405 but the virtual DASD
0405  instead.
Am I missing something?

Chan K. L.

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Re: bonding multiple qeth vnics to vswitch?

[David Kreuter]

why would you want to channel bond two vnics going to the SAME vswitch? Chances 
of a software vnic failure are pretty remote, and may affect all vnics anyway.
I can see bonding two vnics coupled to two vswitches.
 
David Kreuter



From: Linux on 390 Port on behalf of Mark Post
Sent: Thu 1/22/2009 4:06 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: bonding multiple qeth vnics to vswitch?



 On 1/22/2009 at  3:51 PM, Harder, Pieter pieter.har...@brabantwater.nl
wrote:
 Hello list,

 I have been reading in 'Networking with Linux on System z' from Share in
 last August (see http://linuxvm.org/Present/SHARE111/S9267kw.pdf) and I see
 something that is confusing me. In the part about qeth bonding on page 33 it
 says 'Add MAC address to eth0  eth1 (not necessary for GuestLAN or Vswitch)'
 which suggest that bonding is also possible for multiple VNICs connected to a
 VSWITCH. From the documentation about VSWITCH LACP I get the impression this
 is not possible. Is this a slip of the author or just my bad understanding?
 Or is it possible?

I don't see how NIC bonding has anything to do with Link Aggregation.  I don't 
see any reason why you wouldn't be able to form a bond out of two virtual NICs 
COUPLEd to the same VSWITCH.  From the Linux perspective, they look just like 
any other eth? device.


Mark Post

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Re: Moving on

[David Kreuter]

sorry to hear your company is moving away for linux on system z. Not a good 
thing.
Thank you for your contributions and you will be missed.
David Kreuter



From: Linux on 390 Port on behalf of Mark Wheeler
Sent: Sat 1/3/2009 11:16 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Moving on



Greetings all,

After a near-nine year run (since downloading the Marist distro back in
April(?) 2000), 3M shut down the last two IFLs last week. At one time we
had over 75 virtual servers running, including numerous DB2Connect servers,
five TSM servers, the reverse proxy servers front-ending all digital media
content on 3M.com, WebSphere development servers, and various odds and
ends-type low use servers.

It was a blast while it lasted. I had the good fortune to be able to work
with nearly all the cool technologies developed in recent z/VM releases -
virtual switches (VLAN-aware and unaware), guest LANs, hipersockets
(virtual and real), FCP (tape), and more.

I have so many people to thank for all their hard work, from all the folks
in development who brought this marvelous technology to us, to so many of
you contributing to this list day-in and day-out, and especially to all
those who have helped me personally with zLinux issues over the years.

I'll be dropping into lurk mode on this list for now, but hopefully you'll
continue to see me from time to time on VMESA-L, IBM-MAIN, and others.

Very best regards,

Mark Wheeler
IT Infrastructure, 3M Center B224-4N-20, St Paul MN 55144
Tel:  (651) 733-4355, Fax:  (651) 736-7689
mlwheeler at mmm.com
mwheelermn at hotmail.com
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Re: OSA NICDEF address change

[David Kreuter]

what version of SUSE?
for openers look at /etc/sysconfig/network/ifcfg-qeth-bus-ccw-0.0.0340 - it 
will need to be renamed.
 
David Kreuter
 



From: Linux on 390 Port on behalf of Shedlock, George
Sent: Tue 12/30/2008 1:22 PM
To: LINUX-390@VM.MARIST.EDU
Subject: OSA NICDEF address change



Gentle Listers,

I have a SUSE z/Linux instance running under z/VM 5.3. It is currently set up 
with an OSA at virtual address 0340. I have been requested to change this 
address to a different virtual address. Besides the z/VM directory NICDEF 
entry, what else needs to be changed?


George Shedlock Jr
AEGON Information Technology
AEGON USA
502-560-3541

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Re: Linux under z/VM performance document.

[David Kreuter]

yeah not to mention POORLY PERFORMING APPLICATIONS like WAS 6.1 that never 
queue drop.
I call it the new badly running queue 4 workload.
Stay tuned for updates on this.
Suffice it to say from experience that performance tuning and capacity planning 
is an ongoing effort at all times that requires
watering, feeding, and care.  Including current levels (not always possible as 
DJ said), performance monitoring, and adjustments.
David Kreuter



From: Linux on 390 Port on behalf of Barton Robinson
Sent: Wed 12/24/2008 11:30 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Linux under z/VM performance document.



Mark, don't be silly. You obviously don't follow the performance threads here 
when people
go by the book and experience VERY BAD performance with CURRENT LEVELS.



Mark Perry wrote:

 Dave Jones wrote:

One of our leading z/VM and Linux under z/VM performance experts, Barton
Robinson, has
written a very nice performance overview and set of guidelines/best
practices document for
getting the most bank for the buck when deploying Linux as a guest of
z/VM. The article
can be found here:

http://zjournal.com/index.cfm?section=articleaid=279

I'd suggest saving a copy locally someplace, so it can bve referred to
at a later time.



 IMHO its more of an historical text than a reference document to be
 saved and referred to later.

 Its objective seems to be: Buy a good z/VM performance monitor
 That is a very good suggestion, but I might add:

 Ensure that your z/Linux and z/VM are at a current level to avoid almost
 all of the problems mentioned in this document.

 Such as SLES-10-SP2 or RHEL 5.2, and z/VM 5.3/5.4.

 mark

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Re: Slightly OT: Converting Oracle databases to run on Linux for System z

[David Kreuter]

ditto. I have clients using RMAN regularly writing to a linux virtual server on 
system z with NFS.  In the fullness of time a physical server
backs up the rman sitting on the NFS.  backup/restore works great.
Still endorse using export/import for migration.  Once client did 50 databases 
this way in 50 days.
 
David



From: Linux on 390 Port on behalf of Little, Chris
Sent: Thu 12/18/2008 11:49 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Slightly OT: Converting Oracle databases to run on Linux for 
System z



-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
David Boyes
Sent: Thursday, December 18, 2008 10:36 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Slightly OT: Converting Oracle databases to run on Linux
for System z

On 12/18/08 11:29 AM, Little, Chris chris.lit...@okdhs.org wrote:

 You _can_ do an online export of a database.  Don't expect the data
to
 be reliable, though.  But we tested exports on our production systems
 without, you know, impacting production.  Always a good thing(tm).

 Indeed. RMAN is supposed to have some Extra Magick (trademark) that
keeps it
 consistent for backup use, though. So far, we seem to have sufficient
 supplies of Magick that it's worked reliably for us.

Yeah.  We RMAN/TSM/TDP/(insert any other desired TLA here) for
production backups.  I can say for certain to any hesitant DBAs that it
works.  We use it to clone databases (like hardware, of course), and
have had to use it to recover production once.

And our DBAs also were initially hesitant about it

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Re: something to like about linux on z

[David Kreuter]

um ... ur .. cough cough ... why would that be a good thing? ISPF? TSO? Why o 
why I ask you?
David Kreuter



From: Linux on 390 Port on behalf of Lionel B Dyck
Sent: Thu 12/18/2008 1:29 PM
To: LINUX-390@VM.MARIST.EDU
Subject: something to like about linux on z



While watching the startup of a Linux guest I noticed this:

Dec 18 10:27:24 linuxvm0 kernel: qeth: Outbound TSO not supported on eth0

TSO on Linux - now that is handy - now if it also supported ISPF :-)

Lionel B. Dyck, Consultant/Specialist
Enterprise Platform Services, Mainframe Engineering
KP-IT Enterprise Engineering
925-926-5332 (8-473-5332) | E-Mail: lionel.b.d...@kp.org
AIM: lbdyck | Yahoo IM: lbdyck
Kaiser Service Credo: Our cause is health. Our passion is service. We're
here to make lives better.

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Insensibly one begins to twist facts to suit theories, instead of theories
to suit facts.
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Re: Over Committing Storage in z/VM

[David Kreuter]

Would IBM care to comment to this group concerning CMMA?
I am about to embark on a benchmark of CMM and CMMA.  During my initial playing 
with setup of CMM and CMMA, I have found CMMA to be much easier.
Being lazy I like the Ronco oven approach ( sorry if you don't watch 
infomercials) of set it and forget it. I too want performance data so don't 
misinterpret the
previous sentence.
 
I like the idea of linux checking/setting extended hardware bits and then DIAG 
10 RELPAGing. CMMA is just CMS on steroids.
With the ballooning approach of CMM there is more work to do, plus I wouldn't 
rush into using production servers on the shared memory pool. 
I want favored nation status for production servers.
 
Something appeals to me about the intrinsic nature of having the kernel decide 
which page to DIAG 10 when CMMA is used.  I realize that there are implications 
of doing this
for System z far beyond our mainframe shores but frankly I don't care.  We need 
all the help we can get managing our expensive memory plus we have to deal with
our naughty WAS children that never drop from queue.  I'm expecting big things 
from CMM and/or CMMA.
 
David Kreuter



From: Linux on 390 Port on behalf of Rob van der Heij
Sent: Wed 12/17/2008 11:16 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Over Committing Storage in z/VM



2008/12/17   offerbar...@gmail.com:

 Anyone here using CMM for over committing? It sounds great! is it working
 great as well?

It's so great there are even two of them ;-)

CMM-1 (also called ballooning) is to temporarily take away memory from
Linux when it should not be using it. Can be used if you understand
the application requirements in Linux, for example with a TSM backup
that should have memory over night but not during daytime. Or when you
have an external process that can take VM performance data and decide
how much Linux can have or needs.

CMM-2 (or CMMA -  requires adequate hardware and software)  This is
supposed to happen all automatic with no tuning options and no
instrumentation on what it does... Current software levels don't
enable it per default, and future levels may not include the full
feature anymore.
For CMMA, I used to say It is a very cool research item. In lab
environment, an artificial workload could be constructed that takes
advantage of it.  Any performance data I have seen from IBM confirms
this status.

And for completeness, there is CMM-0 ;-)  Make sure your virtual
machines drop from queue when idle, so z/VM can do memory management.
Tune the ratio between high-performance swap and virtual machine
memory based on the workload characteristics and business
justification (so a test server has higher latency and lower cost).
Look for my post on Nov 27th:
www.mail-archive.com/linux-390@vm.marist.edu/msg50668.html
(Google found it searching for real disks for swap is only good for
slowing down Linux)

Rob

Rob van der Heij
Velocity Software
http://www.velocitysoftware.com/



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Re: Over Committing Storage in z/VM

[David Kreuter]

snatching defeat from the jaws of victory - just like the Buffalo Bills -
this is not cheery news especially for us in storage constrained evnironments
David



From: Linux on 390 Port on behalf of Rob van der Heij
Sent: Wed 12/17/2008 12:09 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Over Committing Storage in z/VM



On Wed, Dec 17, 2008 at 5:24 PM, David Kreuter
dkreu...@vm-resources.com wrote:

 Huh? Can you elaborate on your bold statement concerning CMM(A)?
Current software levels don't
enable it per default, and future levels may not include the full
feature anymore.

One SLES10 shipped with cmma=on but that was changed back with the
next kernel because of (assumed) bugs in the code. Another bug was
that Linux fooled CP to think that it was using CMMA, so unless you
have that fixed the Q MEMASSIST does not give you a reliable answer if
enabled by CP.

The implementation of CMMA requires extensive changes in the common
part of the Linux kernel (so beyond the architecture dependent part).
These changes have been made by Martin and were picked up by Novell to
include in the SLES10 kernel for s390, but they are not part of the
main kernel sources yet. This requires that all kernel folks
understand the details. Last thing I have seen about it was that the
community did not see the justification. It obviously does not help
that those who measure this in IBM could not demonstrate the benefits
of it.
It is true that eventually other architectures would take advantage of
this framework, but it will take a lot of time before they get to that
point.

So I expect the poor man's version of CMMA will eventually be
implemented in Linux. It's hard to predict what the benefits of that
are without knowing what CP does with the information.

Rob
--
Rob van der Heij
Velocity Software
http://www.velocitysoftware.com/

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Re: Contrainted System - What to do first and am I missing anything.

[David Kreuter]

another question - did you set those 2 largish machines with QUICKDSP ON?
If yes, why? In general I am not a huge fan of QUICKDSP, it bypasses some 
important scheduler decisions, somewhat defeating
the concept of fair share scheduling.
swplt01 and swplt05
David Kreuter
 



From: Linux on 390 Port on behalf of Barton Robinson
Sent: Wed 12/3/2008 4:33 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Contrainted System - What to do first and am I missing anything.



STORBUF is the answer, the default is broken as designed.  See first,
http://velocitysoftware.com/faq.html;, and then 
http://velocitysoftware.com/present/CONFIG/;
for configuration guidelines, that will help you avoid other such unavoidable 
issues.




Tyler Koyl wrote:

 I am starting to get guests dropping off into E3. Here is what it looks like:

 Ready; T=0.01/0.01 14:34:23
 ind queues
 MAINT Q1 R00 0212/0191 TCPIP Q0 PS  0736/0160
 VSWCTRL1  Q0 PS  0086/0025 SWPLT01   Q0 PS  00015174/00015100
 SWPLT02   Q0 PS  7506/7473 SWPLT13   Q3 PS  00031507/00037536
 SWPLT52   Q3 PS  8694/00010560 SWPLT05   Q0 PS  00083254/00083131
 SWPLT07   Q3 PS  00178853/00202001 SWPLT53   Q3 PS  00048262/00084705
 SWPLT04   Q3 PS  00046603/00053150 SWPLT55   E3 PS  00253430/00330662
 Ready; T=0.01/0.01 14:34:48

 q stor
 STORAGE = 3G
 Ready; T=0.01/0.01 14:34:55

 q srm
 IABIAS : INTENSITY=90%; DURATION=2
 LDUBUF : Q1=100% Q2=75% Q3=60%
 STORBUF: Q1=125% Q2=105% Q3=95%
 DSPBUF : Q1=32767 Q2=32767 Q3=32767
 DISPATCHING MINOR TIMESLICE = 5 MS
 MAXWSS : LIMIT=%
 .. : PAGES=99
 XSTORE : 0%
 Ready; T=0.01/0.01 14:35:01

 q xstore
 XSTORE= 1024M online= 1024M
 XSTORE= 1024M userid= SYSTEM usage= 99% retained= 0M pending= 0M
 XSTORE MDC min=0M, max=1024M, usage=0%
 XSTORE= 1024M userid=  (none)  max. attach= 1024M
 Ready; T=0.01/0.01 14:35:19

 Ready; T=0.01/0.01 14:41:19
 q alloc page
 EXTENT EXTENT  TOTAL  PAGES   HIGH%
 VOLID  RDEV  STARTEND  PAGES IN USE   PAGE USED
 --  -- -- -- -- -- 
 VMTPG1 A724  0   3338 601020 239701 506877  39%
 VMTPG2 A70F  0   3338 601020 235920 522720  39%
 VMTPG3 A71F  0   3338 601020 245292 530640  40%
 VMTPG4 A72F  0   3338 601020 235011 514799  39%
 VMTPG5 A73F  0   3338 601020 236858 522710  39%
 VMTPG6 A700  0   3338 601020  37478  39799   6%
 VMTPG7 A710  0   3338 601020  37929  40396   6%
 VMTPG8 A731  0   3338 601020  38418  40944   6%
   -- --
 SUMMARY4695K  1276K 27%
 USABLE 4695K  1276K 27%

 I added the paging volumes this morning to ensure we had enough in place.

 This is our VM Test LPAR and the sum of the virtual storage of the linux 
 guests
 is 14G so things are tight. What should be done first?

 1. Further reduce guest storage. We have done this already but there may be a
 way to squeeze some more.
 2. What about messing with SRM STORBUF etc?
 3. Anything else besides ordering more storage? I am actually looking for
 something non-disruptive. Taking down a 6 LPAR z9 to add more memory to a test
 lpar does not go over well. We tend to tag this stuff on when production 
 changes
 are made.

 Tyler Koyl


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[no subject]

[David Kreuter]

um maybe the misinformed dude was referring to some piece of Oracle, like a 
client, that doesn't run on linux for System z anyway?
His response falls into the frightfully scary department and sounds like he 
needs a visit to the woodshed
David



From: Linux on 390 Port on behalf of Schneck.Glenn
Sent: Tue 12/2/2008 4:10 PM
To: LINUX-390@VM.MARIST.EDU
Subject: 



Or someone who wants you to continue paying lots of license charges.

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Pat Carroll
Sent: Tuesday, December 02, 2008 4:06 PM
To: LINUX-390@VM.MARIST.EDU
Subject:

That sounds like a seriously misinformed person.

Patrick Carroll  |  Enterprise Architect L.L.Bean, Inc.(r) |  Double L
St. |  Freeport ME 04033 http://www.llbean.com | [EMAIL PROTECTED] |
207.552.2426


-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
O'Brien, Dennis L
Sent: Tuesday, December 02, 2008 4:00 PM
To: LINUX-390@VM.MARIST.EDU
Subject:

We have been informed by an Oracle rep that Oracle does not certify its
programs on any Virtualization Software (to include VMware and zVM.)
and that Oracle Support can't assist the customer until the
virtualization software is removed and the problem is duplicated.

This strikes me as odd, considering that Oracle is encouraging their
z/OS customers to move to mainframe Linux.  Does Oracle expect them to
run Linux in an LPAR, or run unsupported under z/VM?  Or is this guy all
wet?

   Dennis O'Brien

We have awakened a sleeping giant, and we have instilled in him a
terrible resolve.  -- Admiral Yamamoto, following the attack on Pearl
Harbor

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Re: Oracle, zlinux, and virtualization

[David Kreuter]

Please feel free to contact me off list in regards to the Province of Quebec.
 
The license savings was, er, substantial.
David Kreuter



From: Linux on 390 Port on behalf of Mark Post
Sent: Tue 12/2/2008 5:00 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Oracle, zlinux, and virtualization



 On 12/2/2008 at  4:40 PM, Harder, Pieter [EMAIL PROTECTED]
wrote:
 Is there anywhere public you can point to for a business case? There seem to
 be loads of statements like yours, but it is real hard to find convincing
 evidence to show to management persons.

The Province of Quebec gave presentations at several IBM System z Expo and 
SHARE conferences on their experiences in this area, and how they were going to 
tackle WebSphere next, and for the same reasons.  I seem to recall they 
recouped the entire cost of their z9 within a year (or two at the most).

How to Rise Above the Challenges of Deploying z/VM and Linux on the Mainframe 
and Thrive   
http://linuxvm.org/Present/SHARE108/S9230.pdf

Building a strong z/VM and Linux on the mainframe architecture
http://linuxvm.org/Present/SHARE108/S9231.pdf

Then there's the case study I did on a customer that went with discrete 
hardware systems running Oracle and wasted millions of dollars:
Choose the Right Architecture and Save Millions - A Customer Case Study
http://linuxvm.org/Present/SHARE110/S9205mp.pdf


Mark Post

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Re: Ipl in SUSE 10 SP2

[David Kreuter]

It looks like the disk or disks in question are in an LVM group.  Is this 
system a cloned target? Are you perhpas missing a disk?
David Kreuter



From: Linux on 390 Port on behalf of Hugo Luis Vitelli
Sent: Sat 11/29/2008 8:06 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Ipl in SUSE 10 SP2



Hi boys...



I have a consultation that they to realize  the topic is like that, I
have in a z/VM 5.3 a SUSE 10 SP2, realize ipl from the disc and it gives
me this mistake

end_request: I/O error, dev dasda, sector 4727392
  /dev/dasda2: read failed after 0 of 4096 at 2382823424: Input/output
error
  Couldn't find device with uuid 'bWD0mh-UaRz-is8d-ww02-SLsl-UsN6-tgKNwP'.
  Couldn't find all physical volumes for volume group system.
  Couldn't find device with uuid 'bWD0mh-UaRz-is8d-ww02-SLsl-UsN6-tgKNwP'.
  Couldn't find all physical volumes for volume group system.
  Volume group system not found
Waiting for device /dev/system/root to appear:
..not
 found -- exiting to /bin/sh
[EMAIL PROTECTED]




If they can help or indicate me since(as,like) I it can arrange.



Thank you very much.,

Hugo Luis Vitelli

Mainframe Server Management
System Support - Solutions Delivery
IBM Global Services SSA
Hipolito Yrigoyen 2149 ? CP (B1640HFQ)
Modulo ?A? - Martinez ? Pcia Bs. As. - Argentina
Mail.: [EMAIL PROTECTED]
Phone.: 54 11 4898-4898 int. 3485
Fax 54 11 4898-4700


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Re: CMMA Support for Redhat

[David Kreuter]

do #CP TRACE ESSA RUN
and see what happens!
 
David



From: Linux on 390 Port on behalf of Schaffer, Dennis
Sent: Wed 11/19/2008 11:57 AM
To: LINUX-390@VM.MARIST.EDU
Subject: CMMA Support for Redhat



Hi,

I understand that RHEL5 provides support for basic CMM-1 (involving the z/VM 
VMRMSVM service).

Does anyone know if Redhat provides support for CMMA (also known at CMM-2, 
utilizing new hardware instructions)?  If so, what software/fixes/etc. are 
required?

Thanks,
Dennis Schaffer




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Re: SSH on SuSE 10 SP1 problem

[David Kreuter]

what is your host name and length of host name and is it a different length 
from the master host name?
David Kreuter 



From: Linux on 390 Port on behalf of Stahr, Lea
Sent: Fri 10/31/2008 9:40 AM
To: LINUX-390@VM.MARIST.EDU
Subject: SSH on SuSE 10 SP1 problem



I cannot start SSH on my cloned SuSE 10 SP1 system under zVM.  It does
not start at boot time, but gives the error



cipher_encrypt: bad plaintext length 337



I get the same error if I manually try to start it. In the
Virtualization Cookbook for SLES 10 SP2 page 152 it gives the procedure
for modifying the SSH keys for my cloned system. When I use this
procedure, it does not work and it leaves me in a  prompt and I cannot
get out of it. I do not get the Overwrite prompt. Any ideas?



cd /usr/bin

brksvl01:/usr/bin # ls ssh*

ls ssh*

ssh  ssh-add  ssh-agent  ssh-copy-id  ssh-keyconverter  ssh-keygen
ssh-keyscan



brksvl01:/usr/bin # ssh-keygen -t rsa -N  -q -f ssh_host_rsa_key

ssh-keygen -t rsa -N  -q -f ssh_host_rsa_key

 y

y

 y

y



RUNNING
BRKMFZVM



Lea Stahr

Senior Systems Engineer

   Linux and zLinux

  Navistar, Inc.

630-753-5445

[EMAIL PROTECTED]




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Re: VIPA + OSA + VLAN?

[David Kreuter]

Hi: I recommend that you put dummy0 on a different network address not on 
192.168.1.x. Also not sure what you are trying to accomplish by putting both 
vnics on the same guest lan?
David Kreuter
 
 



From: Linux on 390 Port on behalf of Mauro Souza
Sent: Thu 10/30/2008 5:55 PM
To: LINUX-390@VM.MARIST.EDU
Subject: VIPA + OSA + VLAN?



Hi people!

I am facing some problems setting up a network infraestructure. I had never
worked with vlan + vipa before, so...
Environment: zVM 5.3 and RHEL4.6.

I have to set up two linuxes, and they have direct access to an OSA. We have
2 OSA interfaces, so I defined one interface for each, for the high
availability sake. I am not using vswitch, only the direct attached OSA.

First, I have defined the LAN:
DEFINE LAN INTERNET OWNER SYSTEM TYPE QDIO IP UNRESTRICTED MAXCONN INFINITE

Then, in USER DIRECT
NICDEF 6000 TYPE QDIO LAN SYSTEM INTERNET
NICDEF 7000 TYPE QDIO LAN SYSTEM INTERNET

After booting both Linuxes, I configured the VLAN on both:
vconfig eth0 add 100
vconfig eth1 add 100

linux1:
ifconfig eth0.100 192.168.1.1
ifconfig eth1.100 192.168.1.2

linux2:
ifconfig eth0.100 192.168.1.4
ifconfig eth1.100 192.168.1.5

So far, so good. Until here, I am able to ping both interfaces from both
Linuxes. So I added VIPA:

modprobe dummy

linux1:
ifconfig dummy0 192.168.1.3
qethconf vipa add 192.168.1.3 eth0
qethconf vipa add 192.168.1.3 eth1


linux2:
ifconfig dummy0 192.168.1.6
qethconf vipa add 192.168.1.6 eth0
qethconf vipa add 192.168.1.6 eth1

As soon as I activate the dummy0 interface, a blackout strikes the network.
Both linuxes can ping only their own interfaces, and cannot ping each other
interfaces. I tried to create a route to VIPA thru the VLAN (e.g. route add
-host 192.168.1.3 -dev eth0.100), but no luck.
As soon as I destroy the VIPA (qethconf vipa del 192.168.1.6 eth0 ; qethconf
vipa del 192.168.1.6 eth1 ; ifdown dummy0 ; rmmod dummy) I can ping again.

I am not pretty sure if adding VIPA to eth0 instead of eth0.100 is the right
thing to do. I tried to add a vipa to eth0.100, but qethconf complained
about an illegal, incorrect and inexistent eth0.100. I am now thinking about
changing the interface naming convention to use vlan100 instead of
eth0.100...

Someone have an advice?

Mauro
http://mauro.limeiratem.com - registered Linux User: 294521
Scripture is both history, and a love letter from God.

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Re: Tuning Oracle memory use (fwd)

[David Kreuter]

no don't pump up virtual machine memory or CP paging to fix this long term. 
Short term do what you have to of course!
But in my experience Oracle interestingly enough is one of the best behaved 
applications in a linux virtual machine.
A lot of this depends on the size of the database in the machine and the amount 
and type of SQL coming at 'em.  Oracle has some
gizmo that will show you the worst/best performing SQL - take a careful look at 
that!
 
How many databases are you running per virtual machine?
 
I have clients that have very trim Oracle virtual machine sizes, running most 
at 512M to 1G.  This is for many medium size machines (horizontal).
Another client is running huge Oracle machines (several with over 1Tb db 
sizes), so we let 'em have alot of memory, like 8Gb (vertical).
You must work with the DBA to work out your Oracle SGA size. Oracle SGA needs 
to be smaller than virtual machine size.  There is some guidance for this.
 
If swap is at 99% then you need to look at increasing virtual machine size.
 
David
 
 



From: Linux on 390 Port on behalf of Martha McConaghy
Sent: Mon 9/29/2008 5:33 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Tuning Oracle memory use (fwd)



We have a bunch of Oracle databases running on SLES 10 in one of our z/9
partitions.  We are only getting started with this, so we don't much (i.e.
nothing) about tuning Oracle to be a polite guest in this environment and
our DBA is just as new to it.  He is getting advice from a vendor, but
I have no faith in that as they think a mainframe is just a big PCsigh...

Anyway, we are looking at memory usage on these servers and things don't
seem right to me.  However, I know little to nothing about how Linux uses
memory.  One servers hows physical memory at 99% used, but actual is
only at 9%.  Swap is also at 99%.  Those numbers don't sound healthy.

What types of things can our DBA do to tune how Oracle uses memory or should I
just up its virtual storage and postpone the problem?  (Our CP paging is going
up dramatically too.)

Martha

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Re: Perftk fun

[David Kreuter]

what does your FCONRMT AUTHORIZ file contain?
Also on another  note it looks like MONITOR SAMPLE CONFIG area is too small.
David



From: Linux on 390 Port on behalf of Pat Carroll
Sent: Sun 9/28/2008 10:39 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Perftk fun



I flipped a couple of LPARs to 5.3 (from 5.2), and am having issues
getting the web interface to work correctly.
When I get past the login page, there are no systems listed. I expect to
see one (in this case, VMPRODA).
Seems to be related to the FCXAUT410A message.
We do not tun RSCS or VTAM. Had no problems while on 5.2.
Any one run into this?
TIA...Pat


FCX001 Performance Toolkit for VM
Autoscroll 12
 FCXBAS500I Performance Toolkit for VM FL530
 FCXAPP530I Connected to *IDENT for resource FCXRES00
 FCXAPF530I Connected to *IDENT for resource FCXSYSTM
 FCXTCP571I Connected to TCP/IP server TCPIP on path 0003
 FCXTCR571I Connected to TCP/IP server TCPIP on path 0004
 FCXAPP527I User PERFSVM connected on path 0007
 FCXAPC535I Connected to resource FCXRES00 on path 0006, for SF-Coll
 FCXTCP575I WebServer host IP address is xxx.xxx.xxx.xxx:00081
 FCXTCR575I TCPRequest host IP address is xxx.xxx.xxx.xxx:41780
 FCXTCR590I TCPRequest interface activated
 FCXTCP590I WebServer interface activated
 FCXPMN446E Incomplete monitor data: SAMPLE CONFIG size too small
 HCPMOF6229E Monitor event collection is already active.
 HCPMOG6229E Monitor sample collection is already active.
+00 07:23:04 FCXAUT410A Unauth. SF SERVER request by PERFSVM at VMPRODA
 FCXAPC536I Path 0006 to resource FCXRES00 severed
 FCXAPC677E Not authorized for SFSERV on Resource FCXRES00
 FCXAPP528I User PERFSVM has severed path 0007


Patrick Carroll  |  Enterprise Architect
L.L.Bean, Inc.(r) |  Double L St. |  Freeport ME 04033
http://www.llbean.com http://www.llbean.com/  | [EMAIL PROTECTED] |
207.552.2426



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Re: Linux command

[David Kreuter]

ifconfig
 
David



From: Linux on 390 Port on behalf of Martin, Terry R. (CMS/CTR) (CTR)
Sent: Wed 9/17/2008 6:20 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Linux command



Hi



Can someone tell me the Linux command to display the HiperSockets
interface defined to the Linux guest? I want to find the IP address that
is associated with the HiperSockets CHPID and triplets. I am running
REDHAT REL4.6



Thank You,



Terry Martin

Lockheed Martin - Information Technology

z/OS  z/VM Systems - Performance and Tuning

Cell - 443 632-4191

Work - 410 786-0386

[EMAIL PROTECTED]




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Re: Antivirus software on zLinux

[David Kreuter]

I have clients happily running ClamAV on our linux on z series open source 
offerings.
David



From: Linux on 390 Port on behalf of Dave Jones
Sent: Mon 8/4/2008 9:31 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Antivirus software on zLinux



Hi, Marcel.

I suspect that most of the open source anti-virus software packages should 
compile and run
OK on zLinux. However, they can be CPU resource intensive, so you might want to 
consider
offloading the virus scanning functions to an Intel or AIX box, if possible. 
You can still
keep the e-mail and/or file servers running on zlinux.

Have a good one.

Marcel Bootsman wrote:
 Marcel Bootsman wrote:
 Hi all,

 this is my first question on this mailinglist, so please be gentle :-)
 I am interested in knowing what Antivirus software packages are
 available
 in zLinux. I know of the existence of ClamAV, OpenAntiVirus, AmaViS,
 MIMEDefrag. I like to know if any of you are using an Antivirus package
 on
 zLinux., either commercial or Open Source.


 What do you think needs the protection of AV software? (I'm not having a
 shot at you, your answer goes to define the kind of information you
 need: my choice of motor vehicle is a little unusual, and it's probably
 not suitable for you, but it fills my needs quite nicely. And so for AV
 software.)
 --

 Cheers
 John

 John, I don´t feel shot ;-)
 The things that need protection is email and files.

 Regards,

 Marcel


 Tenzij hierboven anders aangegeven: / Unless stated otherwise above:
 IBM Nederland B.V.
 Gevestigd te Amsterdam
 Inschrijving Handelsregister Amsterdam Nr. 33054214

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V/Soft
   z/VM and mainframe Linux expertise, training,
   consulting, and software development
www.vsoft-software.com

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Re: New to zLinux... Backup solutions...

[David Kreuter]

Hi - several clients; several backup solutions.
 
client 1.  quiesces the DB of bunches of oracle machines with SQL statements. 
Sync;sync the linux fs so we're sure we're committed to disk. CMS server 
flashcopies all (ALL) of the mdisks of the linux machines. SQL statement brings 
up the DB, back on the air. In the fullness of time z/OS backs up the target 
flashed volume.
This is not a logical backup. It is a full system backup. Depends on z/os being 
cabled into same dasd if different CECs, or if on same CEC, the iocds marks the 
volumes as shared.
 
There is a write up on this in a recent a Redbook
 
client 2. daily RMAN of large (1Tb) database. The RMAN is written to mounted 
NFS volume. The NFS server is a linux virtual machine. In the fullness of time 
physical server running commercial product backsup the nfs volume with rman.
Saves a few licenses I think of the backup product.
 
David 



From: Linux on 390 Port on behalf of Clovis Pereira
Sent: Fri 7/18/2008 11:15 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: New to zLinux... Backup solutions...




Only a compliment:

 The zOS sys admin has informed me he has taken a copy of the
 system. However as he is also new to zVM, he is unsure of the
 restore process.

These backups as John did can be restored to a original volume without
problem, because the volume was already formatted.
To restore to  a new volume, it MUST be CP-Formatted before the restore.
Use ICKDSF to format with the option CPVOLUME FORMAT.
Best regards.
__
Clovis Pereira
zVM  zOS Support
Maintenance and Technical Support Services
MTS Brazil



  
 McKown, John   
 [EMAIL PROTECTED]
 thmarkets.com To
 Sent by: Linux on LINUX-390@VM.MARIST.EDU
 390 Port   cc
 [EMAIL PROTECTED]
 IST.EDU  Subject
   Re: New to zLinux... Backup
   solutions...   
 17/07/2008 13:04 
  
  
 Please respond to
 Linux on 390 Port
 [EMAIL PROTECTED]
 IST.EDU 
  
  




I have successfully backed up and restored volumes containing z/Linux
data using z/OS and DFDSS. And example step would look something like:

//BACKUP   EXEC  PGM=ADRDSSU,
// TIME=NOLIMIT,REGION=2048K
//SYSPRINT DD  SYSOUT=*
//DASD1DD  DISP=OLD,
// UNIT=SYSALLDA,
// VOL=SER=volser
//BACKUP   DD  DSN=hlq.BACKUP.VVOLSER(+1),
// DISP=(NEW,CATLG),
// UNIT=CART,
// LABEL=(1,SL,EXPDT=99000),
// VOL=(,,,10),
// DCB=(BKUPSYS.MODEL,BLKSIZE=32000)
//SYSINDD  *
 DUMP  INDDNAME(DASD1) -
   OUTDDNAME(BACKUP) -
   TRACKS(0,0,3338,14) -
   OPT(3)   -
   CPVOLUME -
   ADMINISTRATOR
/*

This was for a 3390-3 volume, which has 3339 cylinders (0..3338). I
think why it worked for me was the use of the TRACKS parameter to dump
each track.

--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology

The information contained in this e-mail message may be privileged
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 -Original Message-
 From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On
 Behalf Of Brian O'Mahony
 Sent: Thursday, July 17, 2008 10:08 AM
 To: LINUX-390@VM.MARIST.EDU
 Subject: New to zLinux... Backup solutions...

 We have installed a single zLinux VM on our s390 here.

 I want to take a backup of this system in case something
 drastic happens (ie the developers/testers break it).

 The zOS sys admin has 

Re: Any way of seeing the commands that YaST2 executes behind the scenes

[David Kreuter]

I did this a couple of days ago in real time with ps -ef from another session. 
Picked up the command that yast2 was issuing.
David 



From: Linux on 390 Port on behalf of Bernard Wu
Sent: Thu 5/15/2008 9:03 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Any way of seeing the commands that YaST2 executes behind the scenes



Hi List,
Just curious.  Is there any way of seeing the actual commands that YaST2
executes behind the scenes.


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Re: Oracle instances

[David Kreuter]

How large are the DBs? 2 Gb storage for an Oracle linux virtual machine is 
usually for a very large database (100s of Gbs).
You may be able to greatly reduce the storage size of some of these Oracle 
machines.
David Kreuter


-Original Message-
From: Linux on 390 Port on behalf of Tom Duerbusch
Sent: Wed 4/2/2008 11:09 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Oracle instances
 
Right now, we would mean 50 virtual machines (each perhaps 2 GB memory) with 
the usage still wouldn't swamp a single IFL.  And, these are coded queries.  No 
dynamic queries from hell.  We just can't have that many users.  Currently 
we have 204 PC type database servers and we only have a few thousand PCs.  I 
figure it comes down to 20-30 possible users per database with the very fast 
majority of them, occasional users.

So, I have been planning for about 5-7 production servers such as:
1.  First shift server (most City functions end at 5 PM)
2.  6 AM to midnight server
3.  Near high availability
4.  Convention Center (their usage and uptime requirements based on the current 
conventions)
5.  Courts system 
perhaps a couple other weird ones

Plus their test systems, development systems.

Right now, the only reasons I can think of, for having dedicated servers are:

1.  Very high utilization along with performance requirements
2.  Political
3.  Some idiot designed things that every user needs DBA authority, hence would 
have access to all other applications tables.

In large mainframe shops (not that we are one of them), I've only seen a few 
database servers running to support all their applications (outside of the PC 
servers).

Tom Duerbusch
THD Consulting



Law of Cat Acceleration

  A cat will accelerate at a constant rate, until he gets good and
  ready to stop.


 Rich Smrcina [EMAIL PROTECTED] 4/2/2008 9:22 AM 
Do you mean 50 virtual machines or they want to put it back on real servers?

Tom Duerbusch wrote:
 We are in the prep stages to convert an application over to Oracle 10g on 
 zLinux.  Finally

 I'm now hearing requirements that the application will be on its own, 
 dedicated, instance.

 We are trying to keep away from that.  It could be that the Oracle type is 
 thinking more about PC type servers than mainframes.  If there is a valid 
 reason, we can make it happen.  But I do worry about ending up with 50+ 
 dedicated Oracle servers, each serving a dozen or so users, each.

 Or course, if the database structure and/or the queries are poorly designed, 
 then having most of the database in the SGA, can hide a lot of performance 
 problems. G

 So, who has some guesses on valid reasons for having one application per 
 Oracle instance.  Again, a dozen or so users, the tables occupying about 1-2 
 GB in total.

 Thanks for any comments.

 Tom Duerbusch
 THD Consulting

 Law of Cat Acceleration

   A cat will accelerate at a constant rate, until he gets good and
   ready to stop.

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VM Assist, Inc.
Phone: 414-491-6001
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Re: Having trouble adding a volume

[David Kreuter]

um what are the dates of the files in /boot after the mkinitrd/zipl combo?

options dasd=200-201,210 from modules.conf

David Kreuter


-Original Message-
From: Linux on 390 Port on behalf of Bauer, Bobby (NIH/CIT) [E]
Sent: Tue 3/25/2008 2:52 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Having trouble adding a volume
 
It wasn't so I brought it online, reran mkinitrd, zipl and rebooted.
Still not online after the IPL. I did run the mkinitrd with the -v flag
and found the following:

Adding module dasd_mod with options dasd=200-201,210



Bobby Bauer
Center for Information Technology
National Institutes of Health
Bethesda, MD 20892-5628
301-594-7474



-Original Message-
From: Mark Post [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, March 25, 2008 2:37 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Having trouble adding a volume

 On Tue, Mar 25, 2008 at  2:33 PM, in message
[EMAIL PROTECTED], Bauer,
Bobby
(NIH/CIT) [E] [EMAIL PROTECTED] wrote: 
 Yeah, that was my though also. I just redid those steps with somebody
 who is a bit familiar with Linux looking over my shoulder. Same
results,
 volume 210 does not come online. I can however use the chccwdev to
bring
 210 online after the boot.

When you ran mkinitrd, was the 210 volume online at that point?  If not,
try mkinitrd and zipl while it is online.


Mark Post

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Re: SIGQUIT under z/VM

[David Kreuter]

Hi: You need to map the ^ key from your emulator and then type in ^D maybe 
twice or ^c
IF you have net access to your linux you can just kill the tty task
David Kreuter


-Original Message-
From: Linux on 390 Port on behalf of Guest, Darren
Sent: Fri 3/14/2008 9:57 AM
To: LINUX-390@VM.MARIST.EDU
Subject: SIGQUIT under z/VM
 
Hi,

This is probably a very dumb question but how do I enter a SIGQUIT (usually 
CTRL-D) when using linux from a z/VM 3270 console??!

I've done a cat  testfie and now I can't stop writing to testfile!!! :-|

I'm obviously missing something very simple here...


Cheers,

Darren


Darren Guest
Senior Systems Engineer

Mainframe Professional Services - OS
Technology Services, Experian UK Ltd
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Tel:   +44 (0)115 941 0888 (main switchboard)
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