Re: FCP vs EDEV for system - best practice?

[Richard Gasiorowski]

I applaud you for your decision to place the user DB data on FCP SCSI. Out
performs ECKD and allows you to have ALL LUN after formatting and inherent
multi pathing NOT the 70% or so.   the best part is that you now have made
zlinux less "mainframe" and more main stream.  Other platforms can now
access without having to go thru hoops. For far too long typical mainframe
bigots (i have been working on MF since IBM and my PSR days ala 1974) have
brandished and espoused MF technology in the distributed world.  In this
world to beat them you have to join them and play nicely in the sea of
data.  My experience in the z/VM owned DASD world is its really not a
necessity so long as you maintain PAV in the real disk mode.  Not a big
fan of PAV on mini disk for performance.  PLus what is left which would
reside on MDISK that needs that so called performance boost?

Richard (Gaz) Gasiorowski
Lead Architect UTC Global
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:   Rob van der Heij 
To: LINUX-390@vm.marist.edu
Date:   03/20/2012 04:23 AM
Subject:Re: FCP vs EDEV for system - best practice?
Sent by:Linux on 390 Port 



On Tue, Mar 20, 2012 at 7:04 AM, Grzegorz Powiedziuk
 wrote:

> Data disks for oracle I will build using direct attached FCP/SCSI. It is
> pretty easy to manage, multipathing is working fine - no doubts over
here.
> But what about linux system disks?
> I know that in general ECKD win over FCP.  But does FCP win over EDEV
when
> we are talking about linux system?

I am not sure "ECKD win over FCP" unless you talk about having
performance instrumentation in the control unit and channel...

Since you already have some data on FCP attached SCSI, you seem to
have mastered some of the issues related to that (NPIV, performance
instrumentation, etc). Some parts of that would be avoided when you
have ECKD or EDEV. For some installations there is a big advantage in
having access control in CP and RACF and space management in DIRMAINT.
As long as you're talking about moderate I/O rate, the extra CPU cost
of EDEV may be worth it. If you want to run your Linux systems
management processes from CMS, then being able to handle the disks
there is very attractive.

As for multi-pathing etc, I'm not sure that is a definite must-have
for everyone. I have seen several configurations where multi-pathing
and PAV made things slower. The issues to make this work well for real
life workload are not trivial. I'm currently looking at an ECKD device
that I can read at 250 MB/s (single device, no PAV). With a lot of
workloads this means disk I/O is not the limiting factor and you can
invest your time on other things.

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

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Re: Shared r/w Filesystem

[Richard Gasiorowski]

Lionel

If its Oracle workload OCFS2 or high website interactive usage.  For large
files and batch GSF2.

Richard (Gaz) Gasiorowski
Lead Architect UTC Global
CSC
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From:   Alan Cox 
To: LINUX-390@vm.marist.edu
Date:   02/16/2012 02:54 PM
Subject:Re: Shared r/w Filesystem
Sent by:Linux on 390 Port 



On Thu, 16 Feb 2012 11:26:17 -0800
Lionel Dyck  wrote:

> What is the recommended cluster filesystem for Linux on z that allows
> multiple servers to have read/write access to the same files?

OCFS2 and GFS2 - both have quite different performance patterns so will
suit differing workloads.

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Re: MTU size in z/Linux

[Richard Gasiorowski]

change it in /etc/sysconfig/network-scripts/ifcfg-ethx

Richard (Gaz) Gasiorowski
Solution Architect
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From:
"Martin, Terry R. (CMS/CTR) (CTR)" 
To:
LINUX-390@vm.marist.edu
Date:
11/09/2011 11:58 AM
Subject:
MTU size in z/Linux



Hi

Can we set a custom MTU size in z/Linux RHEL 5.2. We would like to set the
MTU to 9000 but can't seem to get it to take? The network switch we are
communication with supports a MAX MTU of 9216.

Thank You,

Terry Martin
Principal Systems Engineer
Lockheed Martin
CMS - CITIC
3300 Lord Baltimore Drive, Suite 200, 21244
Engineering Computing
Mainframe Support
Cell - 443 632-4191



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Re: mvsdasd

[Richard Gasiorowski]

 Robert -  the read-only seemed harmless  and as far as security that
could get ugly,  We sue CA TSS thru PAM calls and I would not want even
ask what that would cause.  really thank you for taking the time

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
RPN01 
To:
LINUX-390@vm.marist.edu
Date:
11/07/2011 10:54 AM
Subject:
Re: mvsdasd



Since you got no replies, I took a quick look at the site. Since it
creates
a read-only mount, I don't see how you're going to hurt anything, so that
would eliminate any of the "scary" portion, in terms of Sysplex membership
concerns.

Security concerns should be controlled from a z/VM standpoint, in that if
you don't want the Linux image to see it, don't give it a link to the
disk.
If you're worried about a rogue z/VM administrator, he's got CMS, which
could do far more damage than a Linux image.

The mvsdasd driver doesn't support pdse or vsam, so it can't see most of
what z/OS does these days. I'm not too sure how useful it would be, other
than to get a view into flat files for the exchange of information meant
specifically for z/OS to Linux communications. On this point, it could be
fairly handy, but most sites will already have ftp or nfs traffic in place
to do this. Giving access to an entire disk to access a single text file
doesn't seem practical, and doesn't account for the fact that files'
locations aren't fixed in z/OS, so a great deal of legwork would be
involved
just in locating the file and setting up the transaction, where FTP could
be
far more simple and straight forward.

The driver itself makes a number of assumptions about the way z/OS sites
"do
business" that smack of 1980's thinking. The z/OS world generally doesn't
work this way any more at the majority of sites, which leaves this
technology in the dust. In today's world, you never specify the volume
where
a file will be created. The system takes care of this, based on standards
set up by the administrators.

It certainly wouldn't work here at all. I wouldn't even be able to get the
"security file" on a volume here, as its name doesn't fit into the file
naming standard here. The high-level-qualifier doesn't match anything used
here, and so could never be created. They've written this for their own
site, without any thought about what might be required anywhere else.

It's a product that solved problems 30 years ago. It just got written far
too late.

Hope this helps.

--
Robert P. Nix  Mayo Foundation.~.
RO-OC-1-18 200 First Street SW/V\
507-284-0844   Rochester, MN 55905   /( )\
-        ^^-^^
"In theory, theory and practice are the same, but
 in practice, theory and practice are different."


On 11/6/11 2:19 PM, "Richard Gasiorowski"  wrote:

> Going to ask again since the first message was so popular I received no
> responses.  has anyone used this driver from mvsdasd.org? Interested in
> any experience comments and gotcha's. Seems scary to open up z/VM access
> to z/OS DASD which is a member of a sysplex.

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mvsdasd

[Richard Gasiorowski]

Going to ask again since the first message was so popular I received no
responses.  has anyone used this driver from mvsdasd.org? Interested in
any experience comments and gotcha's. Seems scary to open up z/VM access
to z/OS DASD which is a member of a sysplex.


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MVSDDASD

[Richard Gasiorowski]

has anyone used this driver from mvsdasd.org? Interested in any experience
comments and gotcha's. Seems scary to open up z/VM access to z/OS DASD
which is a member of a sysplex.




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Re: disabled IPV6, now down.

[Richard Gasiorowski]

Tom

Did you try ip -6 addr add

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Tom Duerbusch 
To:
LINUX-390@vm.marist.edu
Date:
08/03/2011 12:52 PM
Subject:
disabled IPV6, now down.



I've been getting the "MARTIAN SOURCE 192.168.195.255 FROM
192.168.193.176, ON DEV ETH0" on one of my test machines for two months.

So I decided to check it out and see if I can fix the problem.

Per a Google search, I found a suggestion  which looked reasonable:

More details would be needed.
ifconfig -a
route -n
cat /etc/sysconfig/network/routes

When I did them, I saw that IPV6 was up and running.  I thought some of my
playing around caused IPV6 to be enabled.  I didn't realize that IPV6
comes up by default and we are not IPV6 on our network, so I decided to
see what happens when I disable it.

So, yast, network, network settings, Global Options tab, and disable IPv6,
save it and reboot.

Of course now, I can't get in (other than via the console).
I lost my eth0 adapter:

ifconfig  -a
loLink encap:Local Loopback
  inet addr:127.0.0.1  Mask:255.0.0.0
  UP LOOPBACK RUNNING  MTU:16436  Metric:1
  RX packets:2 errors:0 dropped:0 overruns:0 frame:0
  TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:0
  RX bytes:100 (100.0 b)  TX bytes:100 (100.0 b)

linux76:~ #


I tried to add eth0 back in:

ifconfig eth0 add fe80::200:100:100:14/64
No support for INET6 on this system.
linux76:~ #

But I don't know how to add support for INET6 via the command line
interface.

This is SLES 11 SP 1.

No big deal in recreating this system.  But it would be an interesting
learning exercise in recovering from my failure.

Tom Duerbusch
THD Consulting

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Re: Oracle 11G on zLinux

[Richard Gasiorowski]

Before you go upping the server mem - you might try to add SWAP? 

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Damian Gallagher 
To:
LINUX-390@vm.marist.edu
Date:
08/03/2011 01:27 PM
Subject:
Re: Oracle 11G on zLinux



I believe it's the Linux kernel overhead taking away from the 4GB you 
thought you had. You can get away with 2GB or so - less than that will 
certainly incur a lot of swapping. Just make sure all the other prereqs 
are there and then use the -ignoreSysprereqs flag on the installer - the 
amount you actually need depends on the features you install.

Moving forward, it's what you need at runtime, pretty much the same 
calculation you had before (SGA, PGA, Oracle kernel, Linux kernel, etc).
And, no, I don't want to get into the wider discussion of why that 4GB 
number is there :-)

Cheers
Damian

-Original Message-
From: RPN01 [mailto:nix.rob...@mayo.edu] 
Sent: 03 August 2011 16:26
To: LINUX-390@vm.marist.edu
Subject: Oracle 11G on zLinux

We¹re in the process of doing an Oracle 11g install for proof of concept,
and we¹ve run into the 4gig memory issue. We gave the machine 4g of 
memory,
but it came up with an actual value of 3.9255gig and failed. Why is 4gig 
not
4gig? And, how much memory actually has to be allocated to install? Does
that amount really have to be left in the image moving forward? How are
other sites configuring Oracle on zLinux?

-- 
Robert P. Nix  Mayo Foundation.~.
RO-OC-1-18 200 First Street SW/V\
507-284-0844   Rochester, MN 55905   /( )\
-^^-^^
"In theory, theory and practice are the same, but
 in practice, theory and practice are different."


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Re: ASCII to EBCDIC conversion

[Richard Gasiorowski]

Better check to ensure there are no packed fields.

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
adam shea 
To:
LINUX-390@vm.marist.edu
Date:
06/14/2011 10:35 AM
Subject:
Re: ASCII to EBCDIC conversion



If I remember correctly, the way I did this (when I needed to do something
like this) I transferred the files using vanilla FTP in binary mode. There
is an FTP option you must specify to the FTP server on the z/OS system
requesting the inclusion of the record descriptor word (RDW) field. The
RDW,
among other things, describes the length of the record. You need to use
the
RDW to insert carriage returns between the records.

On Tue, Jun 14, 2011 at 10:22 AM, John McKown  wrote:

> I didn't notice the "dd" portion of the question. The problem, to IBM at
> least on z/OS, the end-of-line character is not a LineFeed (EBCDIC 0x25)
> but a NewLine (EBCDIC 0x15). "dd" converts 0x0a to 0x25 and not 0x15.
>
> On Tue, 2011-06-14 at 10:45 +0530, Sundaram, Parthasarthy wrote:
> > Hi  Team,
> >
> >   Very good morning...Iam parthasarathy working in Mphasis.Kindly
> > requesting you to help me on my below queries.
> >
> > i)In SunOS how to convert the ASCII mode to EBCDIC mode in SFTP
> > mode.
> > ii)   Iam able to convert the ASCII file to EBCDIC thru DD command
> > outside SFTP mode.Is this the right command.
> > iii)  I have a file with 100 records but after converting from ASCII
> > to EBCDIC all the 100 records is aligned in the single line.Please let
> > me know how to resolve this and iam sure that carriage return is
> > missing. Please let me know how to apply the carriage return value
> > during the EBCDIC conversion.
> >
> > It could be highly appreciated if you help me on this.
> >
> > Parthasarathy Sundaram
> > Mphasis an HP company
> > Level 4, 1-B DLF Info City, 1/124 Shivaji Garden , Manapakkam,
> > Chennai-89
> > Mob: 91 9176663227
> > parthasarthy.sunda...@hp.com
> > parthasarthy.sunda...@eds.com
> >
> >
> >
> >
> > --
> > For LINUX-390 subscribe / signoff / archive access instructions,
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> --
> John McKown
> Maranatha! <><
>
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Re: zLinux CA PAM and ACF2

[Richard Gasiorowski]

There is a CA LDAP Server r15 for z/OS bookshelf.

In there you wil find

select a book title to view the documentation:


CA DSI Installation Guide
View HTML
Download PDF
CA DSI Messages Guide
View HTML
Download PDF
CA DSI Product Guide
View HTML
Download PDF
CA DSI Release Notes
View HTML
Download PDF
CA LDAP Installation Guide
View HTML
Download PDF
CA LDAP Messages Guide
View HTML
Download PDF
CA LDAP Product Guide
View HTML
Download PDF
CA LDAP Release Notes
View HTML
Download PDF
CA PAM Client Product Guide
View HTML
Download PDF



Richard (Gaz) Gasiorowski
Solution Architect
CSC
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845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Rob van der Heij 
To:
LINUX-390@vm.marist.edu
Date:
06/01/2011 07:18 AM
Subject:
Re: zLinux CA PAM and ACF2



On Wed, Jun 1, 2011 at 1:03 PM, Andre Massena 
wrote:
> All,
>
> having seen several posts relating to CA PAM and ACF2 in the distant
past on
> this forum, I thought I would pose my humble questions here..
>
>
> A customer of mine is "still" running z/OS 1.5 using ACF2 as the ESM. He
has
> installed several IFL's with bleeding edge z/VM 5.4.. and wants to
> authenticate his z/OS users using an LDAP method from zLinux (SLES11).
>
> Will CA PAM  talk with such an old release of z/OS and presumably an
equally
> old release of ACF2??

According to the Wikipedia article, z/OS 1.5 was introduced around
2004. Looking in the ACF2 book (from 2003), it says:

eTrust CA-ACF2 6.5 includes enhancements to support an interface for LINUX
users. This includes a new PAM (Plug-in Authentication Module) to be used
as
an interface to eTrust CA-ACF2 for user authentication. Enhancements
include a
new LINUX User Profile record to map a LINUX name to the eTrust CA-ACF2
LID and Global LINUX Node records identifying nodes to eTrust CA-ACF2.
This
interface becomes part of the Security Integrator and will run as a daemon
on
z/OS and OS/390.

My pedestrian view would be that timing could be such that your
customer's ACF2 came with the PAM module. But you would have to see
whether that lets itself fit on a more recent kernel like in SLES11.
It's not impossible CA did some proprietary protocol rather than
inplement full LDAP.

Rob

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Re: zLinux CA PAM and ACF2

[Richard Gasiorowski]

I would use CA/DSI and ONLY use the LDAP for any application specific
authorizartion.  DSI connect directly to  the z/OS backend. We sue it for
TSS and my guess its the same for ACF2

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Andre Massena 
To:
LINUX-390@vm.marist.edu
Date:
06/01/2011 07:06 AM
Subject:
zLinux CA PAM and ACF2



All,

having seen several posts relating to CA PAM and ACF2 in the distant past
on
this forum, I thought I would pose my humble questions here..


A customer of mine is "still" running z/OS 1.5 using ACF2 as the ESM. He
has
installed several IFL's with bleeding edge z/VM 5.4.. and wants to
authenticate his z/OS users using an LDAP method from zLinux (SLES11).

Will CA PAM  talk with such an old release of z/OS and presumably an
equally
old release of ACF2??

What are you considered opinions??

Regards,



Andre




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Re: Samba authorization

[Richard Gasiorowski]

Most likely the parent directory is 740

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
"van Sleeuwen, Berry" 
To:
LINUX-390@vm.marist.edu
Date:
04/27/2011 08:55 AM
Subject:
Samba authorization



Hi Listers,

On SLES10 SP2 we are running a samba. We would like to have shares for
specific groups. For instance we have a group zlinux that would get access
into the "PL Linux" directory and they must be able to read and write into
this directory. Several resources on the net give us the configuration for
this but so far we were not able to get the results we expected.

The /etc/smb.conf contains:
[PL Linux]
# Identification
comment = PL Linux

# Management
path= /srv/smb/shares/MFPL/PL Linux
writable= yes
force group = zlinux
valid users = @zlinux

# Access set up
create mask  = 0770
directory mask   = 0770
force create mode= 0660
force directory mode = 0770

According to the config a new file should be created with group zlinux and
mask 770. But when we create a document we see:

-rwxr--r-- 1 nl12237 users 0 Apr 27 13:45 New (10) Text Document.txt

So, in the group users and mask 744.

What can we do to get the samba to create the file under group zlinux and
with 770 instead of 744?

Met vriendelijke groet/With kind regards,
Berry van Sleeuwen
Flight Forum 3000 5657 EW Eindhoven
* +31 (0)6 22564276


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Re: multipl cpu's

[Richard Gasiorowski]

Right! Now we're getting somewhere...  The amount of CPU time spent in
GC depends on the amount of garbage etc, but CPU time required for it
does not get less when a parallel GC spreads the effort over multiple
virtual CPUs (deliberate understatement - adding communication between
threads will increase cost).
And if you engage more virtual CPUs in the GC processing, those
virtual CPU will not run application threads at that time. So even
when GC does not block, it then sucks out all CPU and you still don't
run...

I know I simplified GC by saying that "all stops during GC" since
there's clearly parts of the process that can be done while shop is
open. I would expect the parallel GC threads to run with low priority
so that they take over once the application thread has blocked itself.
Such a setup would not benefit from more virtual CPUs than can run at
the same time.

yes too simplified and prone to cause some undue grief.  Things you must
know when using GC - remember this is not z/OS RSM or VSM we are relating
to here.

1)Throughput is the percentage of total time not spent in garbage
collection, considered over long periods of time.
2) Pauses are the times when an application appears unresponsive because
garbage collection is occurring.
On web servers pauses during garbage collection may be tolerable, or
simply obscured by network latencies. But in interactive short pauses are
negative
3)Footprint is the working set of a process, measured in pages and cache
lines
4) Promptness is the time between when an object becomes dead and when the
memory becomes available
5) Generations the most likely impact on performance whether 2 3 or for
real or virtual CPUs.You have young old small and large. The sizing of one
generation does not affect the collection frequency and pause times for
another generation. A very large young generation may maximize throughput,
but does so at the expense of footprint, promptness, and pause times.

There is no one right way to size generations. The best choice is
determined by the way the application uses memory as well as user
requirements. For this reason the JVMs choice of a garbage collection are
not always optimal, and may be overridden by the user in the form of
command line options. I normally run a trace of the collector  to see its
effectiveness and judge it against response and user experience. Tweaking
as we go along. TO just look at CPU activity, blocking and threads will
get nowhere since the JVM is its own entity and should be treated with
respect.  You have a lot riding on understanding it.

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Rob van der Heij 
To:
LINUX-390@vm.marist.edu
Date:
04/26/2011 05:34 AM
Subject:
Re: multipl cpu's



On Tue, Apr 26, 2011 at 12:34 AM, rodgerd
 wrote:
> On Mon, 25 Apr 2011 22:53:21 +0200, Rob van der Heij
>  wrote:
>
>>
>> If it is non-blocking, why would one be concerned about the elapsed
>> time of GC and what would be the interest of having multiple threads
>> working in parallel on GC. Or would you really have allocation rates
>> so high that a single thread could not keep with it? Or should we
>> conclude that current implementations don't deploy such algorithms?
>
> Irrespective of whether a given GC algorithm is blocking or not, I would
> be concerned about elapsed time since it's CPU spent on GC, not on
> application tasks.  Whether the JVM logs GC elapsed times isn't a
> particularly useful metric as to whether pauses are happening or not.

Right! Now we're getting somewhere...  The amount of CPU time spent in
GC depends on the amount of garbage etc, but CPU time required for it
does not get less when a parallel GC spreads the effort over multiple
virtual CPUs (deliberate understatement - adding communication between
threads will increase cost).
And if you engage more virtual CPUs in the GC processing, those
virtual CPU will not run application threads at that time. So even
when GC does not block, it then sucks out all CPU and you still don't
run...

I know I simplified GC by saying that "all stops during GC" since
there's clearly parts of the process that can be done while shop is
open. I would expect the parallel GC threads to run with low priority
so that they take over once the application thread has blocked itself.
Such a setup would not benefit from more virtual CPUs than can run at
the same time.

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

---

Re: multipl cpu's

[Richard Gasiorowski]

Whoa folks The concurrent low pause collector: this collector is used if
the -Xincgc is passed he concurrent collector is used to collect the
tenured generation and does most of the collection concurrently with the
execution of the application. The application is paused for short periods
during the collection. A parallel version of the young generation copying
collector is used with the concurrent collector. The concurrent low pause
collector is used if the option -XX:+UseConcMarkSweepGC is passed on the
command line. please check out
http://www.oracle.com/technetwork/java/gc-tuning-5-138395.html#0.0.0.Performance%20Considerations|outline
 really be worth your time.  I have sucessfulky on the z with websphere
and linux implemented GC - as any utility that interacts with applications
one must KNOW the application.  Heap sizes etc.

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Alan Cox 
To:
LINUX-390@vm.marist.edu
Date:
04/25/2011 04:39 PM
Subject:
Re: multipl cpu's



> One of the problems with Java Garbage Collection is that it halts
> other work in the JVM for the duration of the GC (because you're
> moving stuff around, you can't have people trying to use it). While GC
> has improved over time to reduce the amount of objects handled during
> each scan, my understanding is that it still suspends other JVM work.
> Part of GC can exploit additional CPUs when you activate the parallel
> GC (not the default).

Thats an implementation flaw (maybe flaw is a strong word given its a
hard problem).

Schoeberl and Puffitsch for one produced a mostly non blocking garbage
collection for Java which only blocks the threads it needs and only at the
points it has to. Rather useful for multi-threaded systems.

Alan

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Re: Where is kernel loaded in memory?

[Richard Gasiorowski]

So I suppose I wasted my  time heh? thx for the update Alan - will
remember not to add my two cents in the future

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Alan Altmark 
To:
LINUX-390@vm.marist.edu
Date:
03/17/2011 08:53 AM
Subject:
Re: Where is kernel loaded in memory?



On Thursday, 03/17/2011 at 08:28 EDT, Richard Gasiorowski
 wrote:
> Martin is correct

LOL!  That goes without saying   ;-)

Alan Altmark

z/VM and Linux on System z 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: Where is kernel loaded in memory?

[Richard Gasiorowski]

Martin is correct

Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Martin Schwidefsky 
To:
LINUX-390@vm.marist.edu
Date:
03/17/2011 08:06 AM
Subject:
Re: Where is kernel loaded in memory?



On Thu, 17 Mar 2011 10:46:18 +0100
Heiko Carstens  wrote:

> On Wed, Mar 16, 2011 at 01:40:36PM -0500, Mark Wheeler wrote:
> > Greetings all,
> >
> > Is there a way to tell externally (command or otherwise) where the
> > zLinux kernel is loaded in memory?
>
> The kernel gets loaded to address absolute zero and uses a 1:1
> mapping for virtual to physical pages.
> /proc/iomem tells you which memory areas the kernel uses.
> This does not include kernel modules which get loaded into the
> vmalloc area which is a virtual address range that for current
> kernels starts at address 0x03c0. That range (or better
> parts of it) gets backed with arbitrary physical pages when needed.

Well, the kernel image is linked with a starting address of 0, logically
it is loaded to the absolute address zero 0 of the guest container.
In truth the kernel image usually is loaded starting from either 0x1
or 0x10, the ipl loader strips the first 64KB / 1MB.
But the knowledge that your guest kernel is at specific address doesn't
tell you much, for a z/VM guest the memory is virtualized and for the
LPAR partition you are running in you have another remapping mechanism
(zoning). Basically the pages of your kernel can be anywhere in the
physical memory.

--
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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Re: Performance Day Seminars / zVM and Linux on z Education

[Richard Gasiorowski]

So you say you have a president position open?  Boat included

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Len Diegel 
To:
LINUX-390@vm.marist.edu
Date:
08/24/2010 04:26 PM
Subject:
Re: Performance Day Seminars / zVM and Linux on z Education



We've booked NYC twice during the past year and both sessions were  Max'd
out.  We will likely do another one during 1Q11.FYI, we've been trying
to
get some time on the agenda for the NY Linux on  z Council Meeting.
Hopefully, that will happen some time soon.   It's certainly not enough
time to do
a full Performance Day, but it would  provide some time to cover the
basics.

Regards,
Len


In a message dated 8/24/2010 3:18:10 P.M. Central Daylight Time,
ec...@nyx.com writes:

Any  schedule  for NY  City?


|>
| From:   |
|>
>---
---|
|Len Diegel  |
>---
---|
|>
|  To:|
|>
>---
---|
|LINUX-390@VM.MARIST.EDU|
>---
---|
|>
|  Date:  |
|>
>---
---|
|08/24/2010 02:45 PM  |
>---
---|
|>
|  Subject:   |
|>
>---
---|
|Performance Day Seminars / zVM and Linux on z Education   |
>---
---|
|>
|  Sent by:   |
|>
>---
---|
|Linux on 390 Port  |
>---
---|





Velocity  Software is offering Performance Days in Atlanta on September
15th
and in  Phoenix on September 16th.   Seating capacity is limited.   These
no-charge seminars help installations obtain optimal  performance  from
z/VM
and Linux on System z environments.

For  additional information about the seminar and to register, please use
the  following  link:
_http://velocitysoftware.com/seminar/seminar.html_
(http://velocitysoftware.com/seminar/seminar.html)

Regards,
Len  Diegel
President
Velocity Software  Inc.

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Please consider the  environment before printing this email.

Visit our website at  http://www.nyse.com



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Re: Performance Day Seminars / zVM and Linux on z Education

[Richard Gasiorowski]

Ditto NYC -

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Eddie Chen 
To:
LINUX-390@vm.marist.edu
Date:
08/24/2010 04:19 PM
Subject:
Re: Performance Day Seminars / zVM and Linux on z Education



   Any  schedule  for NY City?


|>
| From:  |
|>

>--|
  |Len Diegel  |

>--|
|>
| To:|
|>

>--|
  |LINUX-390@VM.MARIST.EDU|

>--|
|>
| Date:  |
|>

>--|
  |08/24/2010 02:45 PM|

>--|
|>
| Subject:   |
|>

>--|
  |Performance Day Seminars / zVM and Linux on z Education  |

>--|
|>
| Sent by:   |
|>

>--|
  |Linux on 390 Port   |

>--|





Velocity Software is offering Performance Days in Atlanta on September
15th
 and in Phoenix on September 16th.   Seating capacity is limited.  These
no-charge seminars help installations obtain optimal performance  from
z/VM
and Linux on System z environments.

For additional information about the seminar and to register, please use
the following link:
_http://velocitysoftware.com/seminar/seminar.html_
(http://velocitysoftware.com/seminar/seminar.html)

Regards,
Len Diegel
President
Velocity Software Inc.

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Please consider the environment before printing this email.

Visit our website at http://www.nyse.com



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hereby notified that any dissemination, distribution or copying of this
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communication in error, please notify the sender immediately by replying
to the message, and please delete it from your system.  Thank you.  NYSE
Euronext.

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Re: Virtualization with the Best TCO?

[Richard Gasiorowski]

This is smoek screen.  they do not include facility costs, middleware,
network and support.

1) If they include they ONLY included the power NOT the ambient cooling.
Sysz - 5Kw and none
2) BIggest savings is middleware - more virtual servers per unit (harware)
equals less in license costs
3) With out crypto you are looking at a backbone network savings (behind
the wall) of 30 to 40%.
If you include crypto its even greater cuz now there is an elimination of
bandwidth and firewall appliances
4) With zLinux I can update the kernel once for an entire LPAR or with DSS
one common read only Oracle SQP library that effects all prodcution
servers on the LPAR.\

How do I know this - been doing that fight daily for the last 4 years at
the company I work for.  There is a reason they do not include System z -
plus the more servers the better the TCO or ROI.







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From:
"Graves, Aaron" 
To:
LINUX-390@vm.marist.edu
Date:
08/24/2010 03:16 PM
Subject:
Virtualization with the Best TCO?



How about a z/VM zLinux response to this?

http://www.computerworld.com/pdfs/RedHat_Enterprise_Linux_has_Best_TCO.pdf

Aaron




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Re: Performance Day Seminars / zVM and Linux on z Education

[Richard Gasiorowski]

What kind of buses do you have access to that float?  Do any of these
buses fly?

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Len Diegel 
To:
LINUX-390@vm.marist.edu
Date:
08/24/2010 03:18 PM
Subject:
Re: Performance Day Seminars / zVM and Linux on z Education



Sure...  We do that for all the attendees.  We had a bunch in  from
Australia last Spring and Iceland over the summer.   Let me know  where
you'll be
and I'll have the bus make a stop at the nearest corner.   :-)

(we do provide breaks and lunch...)

Regards,
Len


In a message dated 8/24/2010 1:56:57 P.M. Central Daylight Time,
rgasi...@csc.com writes:

Len,

Will Velocity pick up travel and lodging as part of the  free offering?

Richard (Gaz) Gasiorowski
SA&E Solution  Architect
CSC
3170 Fairview Park Dr., Falls Church, VA  22042
845-889-8533|Work|845-392-7889  Cell|rgasi...@csc.com|www.csc.com




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From:
Len Diegel  
To:
LINUX-390@vm.marist.edu
Date:
08/24/2010  02:46 PM
Subject:
Performance Day Seminars / zVM and Linux on z  Education



Velocity Software is offering Performance Days in  Atlanta on September
15th
and in Phoenix on September 16th.Seating capacity is limited.  These
no-charge seminars help  installations obtain optimal performance  from
z/VM
and Linux on  System z environments.

For additional information about the seminar and  to register, please use
the following  link:
_http://velocitysoftware.com/seminar/seminar.html_
(http://velocitysoftware.com/seminar/seminar.html)

Regards,
Len  Diegel
President
Velocity Software  Inc.

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Re: Performance Day Seminars / zVM and Linux on z Education

[Richard Gasiorowski]

Len,

Will Velocity pick up travel and lodging as part of the free offering?

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Len Diegel 
To:
LINUX-390@vm.marist.edu
Date:
08/24/2010 02:46 PM
Subject:
Performance Day Seminars / zVM and Linux on z Education



Velocity Software is offering Performance Days in Atlanta on September
15th
 and in Phoenix on September 16th.   Seating capacity is limited.  These
no-charge seminars help installations obtain optimal performance  from
z/VM
and Linux on System z environments.

For additional information about the seminar and to register, please use
the following link:
_http://velocitysoftware.com/seminar/seminar.html_
(http://velocitysoftware.com/seminar/seminar.html)

Regards,
Len Diegel
President
Velocity Software Inc.

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Re: Memory use question

[Richard Gasiorowski]

Rob has a good point in resource usage and with GC it definitely is the
lesser of two evils.  I have never had an instance where after determining
the GC Collector settings performance and % utilization suffered
negatively.  One can also look at GC as being Java feeble attempt at
memory management.

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Rob van der Heij 
To:
LINUX-390@vm.marist.edu
Date:
06/24/2010 04:45 AM
Subject:
Re: Memory use question



On Thu, Jun 24, 2010 at 9:59 AM, Rodger Donaldson
 wrote:

> Well, bearing in mind both the Sun and IBM JVMs default to memory
> settings that both IBM and Sun say are crap for app servers (e.g.
> neither using their 1.4 or later GC algorithms by default), I'm not sure
> I'd place too much stock in their defaults.

It's my understanding that the WAS properties (or such) override the
setting. I guess I'll have to look into the typical settings then...
One of the design choices with the JVM is that memory management data
(counters, pointers, etc) are within the objects being managed. This
is not entirely lucky for virtualized environment because it means
that pages with allocated old objects are referenced and thus paged
back in. With small enough objects, a GC scan needs the entire heap
resident. I thought modern GC strategies identified generations of
data in the heap that would allow old data to be skipped in most
scans.

> Our experince, both on standalone Solaris boxes using the Sun JVM, and
> on our zLinux guests using the IBM JVM, has been that large min/max
> separation has produced poor results, as the JVM tends to consistently
> try to push memory use back down to the min setting, often invoking
> unnecessary GCs to do so.

Memory has to come from somewhere. Whether a GC was unnecessary is
hard to tell, especially in a virtualized environment. While it is
true GC takes valuable resources, so does any (memory) management.
Simply the fact that you can't identify the cost does not mean it's
for free...

With an application server that does not hold data (data resides in
the database elsewhere) we could expect memory requirements to consist
of a base level plus some amount for each active connection. I've
talked to application developers who had very good understanding of
the requirements per transaction. Depending on typical volume,
duration and freqeuency of such active connections, you get a typical
heap size. If you set the minimum a bit aobve that, malloc() / free()
calls should happen only around periods with significantly more active
connections. I recall you can also change the chunk size to create
some hystheresis.

Don't know whether this model still works now that developers start to
implement cache with in-memory databases on top of GC-managed
objects...

> Using our actual applications with our stress test suites (which tend to
> have pretty good predictave power) we tend to see worse application
> behaviour (small stalls, higher average response times) and higher CPU
> use when giving a big spread for min/max; on an older Sun JVM/Solaris
> combo we also saw failure in the application to ramp up quickly enough
> to deal with load spikes, with big stalls as the JVM tried to alloc
memory.

Don't know about yours, but stress tests often involve periods with
high utilization. While you need that stake in the ground, it's not
the best one to measure scalability: if you need the resource 90% of
the time, you worry less about how to share it during the remaining
10%. But if you have an average utilization of 5% and a duty cycle of
an hour, then it makes sense trying to share resources even if it
costs you something extra (during the 5% that your application is
active).

> (That last behaviour was common to connection pooling - if we didn't
> open enough connections to Oracle at startup time, the app could have
> bad performance or even fail as load ramped up due to an inability to
> open connections quickly enough.)

Though it might sound nice to have a large connection pool, if that
means the data is referenced very rarely (would not be surprised to
see round-robin rather than push-down stack) then you may get paged on
z/VM level and held back even longer.

Rob
--
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Velocity Software
http://www.velocitysoftware.com/

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Re: Ten years of Linux on the mainframe

[Richard Gasiorowski]

Ten years and counting.  Sometimes I feel like we are still 10 years ago.
Especially when speaking to people about zlinux. Feels like groundhog day.
 Like a bad dream and still in System z New Technology Group.  But it is
getting better.  Learned o few things like never use the term mainframe in
any presentation or paper.  Conjures up bias on both sides.  Traditional
Distributed folks cannot grasp that the System z is just another server
with virtualization and the mainstream "MAINFRAME" have as much of a
problem grasping the idea.
Someday

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Gregg Levine 
To:
LINUX-390@vm.marist.edu
Date:
06/09/2010 01:28 PM
Subject:
Re: Ten years of Linux on the mainframe



On Wed, Jun 9, 2010 at 1:14 PM, Jim Elliott
 wrote:
>> http://blogs.computerworld.com/16284/ten_years_of_ibm_mainframe_linux
>
>> I see Jim Elliott has already commented on the article.
>
> Yes, I commented as I saw he posted a link to my web site without
> any credit given. Also, put in a link to my SHARE presentation
> on 10 years of Linux on System z.
>
> Jim
>
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>

Hello!
I saw that as well. Has only been ten years Jim since we met at a
LinuxWorld event, discussed things over lunch? Where does time go?

However, the anonymous comments shows how many people there who read
those things and are as clueless as a lot of people I know who're in
my LUG. (A presenter there on the same subject a few years ago brought
a lot of interest but also a lot silly questions.)
-
Gregg C Levine gregg.drw...@gmail.com
"This signature fought the Time Wars, time and again."

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Re: Call for Community Participation

[Richard Gasiorowski]

Went to the site and looks like a great idea will investigate but  do have
one bitch.  It does not come up  when google "zlinux" or "linux vm" linux
z/vm" or other variables.  So I think that's where Floyd and many of us
are coming from.  If it were not for Floyd I and others still would not
know about it.  Got to get that crystal ball repaired.  Thx anyway its now
bookmarked.

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Rich Smrcina 
To:
LINUX-390@vm.marist.edu
Date:
06/04/2010 03:23 PM
Subject:
Re: Call for Community Participation



None of that now, it's already available.  Contribute at will.

http://www2.marist.edu/htbin/wlvtype?LINUX-VM.77911

On 06/04/2010 02:11 PM, McKown, John wrote:
> Of course, the first "fight" will be over which Linux distro and Wiki
engine!
>
> --
> John McKown
> Systems Engineer IV
> IT
>
> Administrative Services Group
>
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>
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Re: Call for Community Participation

[Richard Gasiorowski]

Floyd

I certainly would be interested in looking at the plan when complete.




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From:
Floyd Rodery 
To:
LINUX-390@vm.marist.edu
Date:
06/04/2010 03:14 PM
Subject:
Re: Call for Community Participation



Richard,

I certainly agree and think we both sort of hit the same approach idea.
Any/All contributions could be published/posted anonymous. I have a
plan/guideline document that I'm working on and would certainly be willing
to share it with anyone who's interested?  The more idea's and "hands in
the
pot" the better as far as I'm concerned, as I agree, there's no "one
idea/person" that suites everyone.  The more involvement, the more idea's,
the better the outcome (at least in my book, collaboration is key!).

-FR

On Fri, Jun 4, 2010 at 2:59 PM, Richard Gasiorowski
wrote:

> I think its a good idea and would be willing to contribute ONLY if it is
> left anonymous.  Company restrictions and that the biggest egos not take
> ownership.
>
>  So Floyd a strategic plan and some structure around it would be a good
> idea.  Too many sites do get built with the typical engineer mindset
which
> is like a developer mindset.  Its my idea and it must be good ala-
people
> will come.  This isn't baseball - field of dreams.
> Never heard until today that there was a zLinux Wiki site built.  At
least
> a site where google search criteria would generate a match.
>
> Do you have any plans?  Guidelines?
>
>
>
>
>
>
>
>
>
>
> This is a PRIVATE message. If you are not the intended recipient, please
> delete without copying and kindly advise us by e-mail of the mistake in
> delivery.
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to
> any order or other contract unless pursuant to explicit written
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> purpose.
>
>
>
> From:
> David Boyes 
> To:
> LINUX-390@vm.marist.edu
> Date:
> 06/04/2010 02:26 PM
> Subject:
> Re: Call for Community Participation
>
>
>
> If I misread, I apologize. The domain name looks like one of the ZDNet
> vortex, which would really bug me as they're getting quite pissy about
> paywalls and registration, yet continuing to solicit "contributors".
>
> -- db
>
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>
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Re: Call for Community Participation

[Richard Gasiorowski]

I think its a good idea and would be willing to contribute ONLY if it is
left anonymous.  Company restrictions and that the biggest egos not take
ownership.

 So Floyd a strategic plan and some structure around it would be a good
idea.  Too many sites do get built with the typical engineer mindset which
is like a developer mindset.  Its my idea and it must be good ala- people
will come.  This isn't baseball - field of dreams.
Never heard until today that there was a zLinux Wiki site built.  At least
a site where google search criteria would generate a match.

Do you have any plans?  Guidelines?










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From:
David Boyes 
To:
LINUX-390@vm.marist.edu
Date:
06/04/2010 02:26 PM
Subject:
Re: Call for Community Participation



If I misread, I apologize. The domain name looks like one of the ZDNet
vortex, which would really bug me as they're getting quite pissy about
paywalls and registration, yet continuing to solicit "contributors".

-- db

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Re: Poor WebLogic Performance

[Richard Gasiorowski]

Brad,

Focus in on the Java run time parms.  My intiital guess is a heap stack
issue.  Also you might want to ensure that the GC is active.   WebLogic is
NOT shipped with default parms that would be zLinux friendly.  In porting
Linux apps to zLinux I always had to tweek it.  There is no such thing as
Linux is Linux is Linux.  Sound good but ain't so.


Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Barton Robinson 
To:
LINUX-390@vm.marist.edu
Date:
03/04/2010 11:10 AM
Subject:
Re: Poor WebLogic Performance



IF you have a good performance monitor, you would know exactly what
process on what server is using CPU.
With zVPS (ESALPS), on one screen, you can see ALL the top processes
across your entire Linux farm, with one PFK, you can sort them by cpu.
Knowing where your cpu is going means you can do capacity planning,
solve problems, and know when things change.

Running without a good performance monitor is is like driving a car
across the rockies without a gas gauge, you will run out of gas, you
just don't know if it will be at a good time or a bad time.

Carson, Brad wrote:
> We've begun working with Oracle WebLogic running on RHEL under z/VM.  We
are seeing very poor performance with these guests and z/VM is constantly
running at 100% CPU when these guests are active.  It looks to us that
something in any of our WebLogic guests is spinning on CPU.  Response time
in the guest is poor and WebLogic response is worse.
>
> Here are some of the particulars:
> z/VM is at 5.4.0
> RHEL is at 5.3
> IBM Java (in the guests) is at 1.6.0
> WebLogic is 10.3 (I've been told)
>
> Any assistance in trying to get to the bottom of this issue would be
greatly appreciated.
>
>
> Brad S. Carson
> Mainframe Technical Support
> Laboratory Corporation of America
> Phone: 336-436-8294
> email: cars...@labcorp.com
> Please ignore company inserted HIPAA disclaimer below
>
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Re: Passive Port Control

[Richard Gasiorowski]

hey Mr Scully

IS it possible that /etc/services has been defined?

Richard (Gaz) Gasiorowski
SA&E Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
"Scully, William P" 
To:
LINUX-390@vm.marist.edu
Date:
02/23/2010 04:45 PM
Subject:
Passive Port Control



Help me understand something, please.  In SuSE 10 I see:

  > cat /proc/sys/net/ipv4/ip_local_port_range
  32768   61000


However with VSFTP I seem to be using an ephemeral port outside that
range:


Finding Host whatever.ca.com ...
Connecting to 123.123.123.123:21
Connected to 123.123.123.123:21 in 0.203093 seconds, Waiting for Server
Response
220 "This is CA service."
Host type (1): Automatic detect
USER anonymous
331 Please specify the password.
PASS (hidden)
230 Login successful.
SYST
215 UNIX Type: L8
Host type (2): UNIX (standard)
PWD
257 "/"
CWD /
250 Directory successfully changed.
PWD
257 "/"
TYPE A
200 Switching to ASCII mode.
PASV
227 Entering Passive Mode (123,123,123,123,120,134)
connecting data channel to 123.123.123.123:120,134(30854)
data channel connected to 123.123.123.123:120,134(30854)
LIST
150 Here comes the directory listing.
transferred 955 bytes in < 0.001 seconds, 7460.938 Kbps ( 932.617 KBps),
transfer succeeded.
226 Directory send OK.


I did -not- encode these records in VSFTP's configuration, as I thought
TCP/IP's limits would be in effect.


pasv_max_port
The maximum port to allocate for PASV style data connections. Can be
used to specify a narrow port range to assist firewalling.

Default: 0 (use any port)
pasv_min_port
The minimum port to allocate for PASV style data connections. Can be
used to specify a narrow port range to assist firewalling.

Default: 0 (use any port)



My question is this:  Why are the TCP/IP limits on the ephemeral ports
not enforced?

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Re: z/VM; zLinux; SuSE SLES10; JAVA/64Bit; WAS 7.0 FP5; Slow Initialization of WAS with High CPU on IFL

[Richard Gasiorowski]

Suggest FP7  - if you have PK76017 applied.


Richard (Gaz) Gasiorowski
Global System z Linux /AO Mainframe Services
Product Manager
Americas RPE Portfolio Platform Services
CSC
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From:
Ron Wells 
To:
LINUX-390@vm.marist.edu
Date:
02/03/2010 10:33 AM
Subject:
z/VM; zLinux; SuSE SLES10; JAVA/64Bit; WAS 7.0 FP5; Slow Initialization of
WAS with High CPU on IFL



The subject pretty much says it all.

When we startup/initialize WAS Version 7 the IFL goes to max CPU, the
elapsed time for WAS initialization is 5 minutes to 8 minutes.
This is just during WAS initialization.  The application that are being
built and run there appear to work fine in the environment.
The concern is the impact to startup/initialization of WAS
(test/development/QA) environments on the production WAS as we have single
IFL and VM LPAR.
Believe we may be able to mitigate the impact of WAS (T/D/QA) through
favoring the productions environments.
Wanted to see what others might suggest to look into to "tune" the
initialization impact.
Have heard that WAS 7 may be experiencing this where as WAS 6 this may not
have been so prominent

SuSE has the Novell delivered JAVA 64B 1.5 SR10 and WAS 7 uses the IBM
delivered version of JAVA 64B 1.6 SR5.

It may pay to focus on the WAS  & JAVA 1.6 environments.

Mike Neeley, CISSP
Director, Technical Services
American General Finance
812-468-5596

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Re: /usr/local -or- /local

[Richard Gasiorowski]

Y'all

/usr/local installations typically imply the ability to co-exist with
other software applications in the same directory tree.  this is by no
means an absolute rule, but just about anything use install with the
./configure; make; make install process would be a good example of this
co-existance paradigm.

 you can install/remove software without having to constantly muck with
your system profiles for maintaining stuff like PATH.  from a linux
distribution developer
standpoint, it also is more attractive because you don't have to be
familiar with a certain software package to know where a certain kind of
file should be placed

Found in pathname.com/fhs

4.8.2. /usr/local : Local hierarchy
4.8.2.1. Purpose
The /usr/local hierarchy is for use by the system administrator when
installing software locally. It needs to be safe from being overwritten
when the system software is updated. It
may be used for programs and data thatare shareable amongst a group of
hosts, but not found in /usr. Locally installed software must be placed
within /usr/local rather than /usr unless it is being installed to replace
or upgrade software in /usr
It's almost worded like ISV packages are intended to be installed in OPT,
while build from source packages are intended for /usr/local and /usr not
symlinked



Richard (Gaz) Gasiorowski
Global System z Linux /AO Mainframe Services
Product Manager
Americas RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
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From:
Richard Troth 
To:
LINUX-390@VM.MARIST.EDU
Date:
01/05/2010 02:42 PM
Subject:
Re: /usr/local -or- /local



Mike --

You're covered, yes.

FHS does not say that /usr/local cannot be a sym-link.  Only that it
is the place the sysadmin (or customer) puts non-vendor stuff or
non-opsys stuff or non-distro stuff.

John --

One FS hiding another is ... for example ... if /usr/local were a
directory instead of a sym-link and you then mount /usr afterward, the
/usr you mount would hide the /usr/local you had previously mounted.
Rare, yes, but possible.  In any case, cascaded mount points is
something I was hoping to (continue to) avoid.

Mark --

So ... by now ... you get the idea?  It's not that /local is sacred
nor that /usr/local is bad, just that I am personally (and we are at
my shop) in the habit of making these each be unique filesystems.  But
we're doing some clean-up, so one of the guys thought we should ask:
What is the impact?

So far, no one has said there is our would be a problem.  I have never
believed there would be, but in "business" one wants to be well
documented.  :-)

-- R;   <><






On Tue, Jan 5, 2010 at 14:24, Michael MacIsaac  wrote:
> Rick,
>
>> What do y'all say?
> I'm not Red Hat nor Novell, but I'll chip in because I think I'm covered
> under "y'all" :))
>
> We moved from writing about /local/ to /usr/local/ as /usr/local/ is in
> the Linux Filesystem Hierarchy Standard (FHS):
>
> 
> "The /usr/local hierarchy is for use by the system administrator when
> installing software locally. It needs to be safe from being overwritten
> when the system software is updated. It may be used for programs and
data
> that are shareable amongst a group of hosts, but not found in /usr.
>
> Locally installed software must be placed within /usr/local rather than
> /usr unless it is being installed to replace or upgrade software in
/usr.
> "
> 
>
> I'm guessing you know this already and are perhaps trying to address it,
> but I thought it was worth mentioning.
>
> "Mike MacIsaac"(845) 433-7061
>
> --
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Re: x86 to z CPU comparison for calculating IFLs needed

[Richard Gasiorowski]

My experience shows that when performing comparison tests on  the z with
other platforms is greatly askew when ONLY measuring one process.  The z10
will show a greater usage for one process to other platforms.  However,
jack up the processes and you will see that the z10 will not increase
measurably while the other platforms will.

Richard (Gaz) Gasiorowski
Global System z Linux /AO Mainframe Services
Product Manager
Americas RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Barton Robinson 
To:
LINUX-390@VM.MARIST.EDU
Date:
01/04/2010 12:20 PM
Subject:
Re: x86 to z CPU comparison for calculating IFLs needed



I think you are missing several things. (And jiffies are in 10ms
increments, not 1ms increments)

First, have you verified the accuracy of your CPU numbers?  Does RHEL4
include the steal timer patch and is it working correctly on both VMWare
and z/VM? Even with current levels of Linux and z/VM, the CPU numbers
must be corrected.

2nd, what is your target peak cpu utilization for VMWare, and for z/VM?
I would expect 50% for VMWare (Being very generous i think) and 90% for
z/VM.  So z/VM, the processors get an extra 80% of CPU seconds.

3rd, It looks like you are measuring one "batch" process.  Real work
would have lots of processes, switching between workloads at even 1000's
of times per second.  The cache technology in the z10 will be vastly
superior, and will provide better CPU numbers when measuring an
environment closer to a production reality.

Stewart Thomas J wrote:
> Need some assistance on understanding a workload comparison. Here is
what we have:
>
> We run a business workload (Java/WebSphere) for one week on an HP DL585
G5 server four Quad-Core

AMD Opteron Processors, model 8389 (2.9GHz) on Red Hat Enterprise Linux
4 kernel version 2.6.9.
This is virtualized under VMware ESX.  Using /proc/$$/stat, we see that
our process id consumed
23,525 seconds of "cpu time". We are basing this "cpu time" on the
utime/stime values (from
issuing a cat against /proc/$$/stat). Our understanding is that this is
giving us the total
jiffies consumed, and we are then dividing this by 1000 since the jiffy
timer is a millisecond.
That is how we calculated the "cpu time" in seconds.
>
> We ran this same load on a System z10 EC for a week. This is a z/VM 5.3
LPAR with RHEL4
running as a guest. On the mainframe, we see that our process id
consumed 25,649 seconds of
"cpu time".
>
> We generated what we call an equivalence factor: 23,525 / 25,649 =
0.9172
>
> Based on this, we believe that we'll need ~10% more z10 CPU cores to
process our workload
than we would on our comparison platform.
>
> Question for the audience is - are we not understanding jiffies or the
/proc/$$/stat timers
for cpu calculation correctly? Wondering if we might be missing
something insanely obvious in
comparing cpu time (cores) in this fashion, or if this does seem
reasonable for a Java/WebSphere
workload.
>
> For reference, we have someone in doing a TCO for our workload using
generalized spreadsheets
for the calculations and we are using our internal comparison and the
numbers are way off for
the total estimated IFL count. For an example of what I'm talking about
here, say we have 68
x86 cores for this workload. During overlapping peak times we are
totally consuming 30 of these.
Based on our equivalence factor calculation above, we are saying that
we'll need >30 IFLs to
handle these peaks. Based on the generalized spreadsheet calculations
from those doing the TCO
they claim we can run this peak workload in 8 IFLs. So essentially my
main question from your
experiences are if our own calculations make more sense or if the
generalized spreadsheet
can/cannot be trusted for accuracy.
>
> Any advice or experiences would be welcomed.
>
> Tom Stewart
> Mainframe OS, Networking & Security
> Deere & Company Computer Center
> www.johndeere.com
>
>
>
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Re: CentOS 4.7 on zSeries

[Richard Gasiorowski]

Frank

Does not sound like you have it http://linuxvm.org/Patches/index.html will
get it for you cpint which contains vmcp.

also
http://publib.boulder.ibm.com/infocenter/eserver/v1r2/index.jsp?topic=/diricinfo/vsd0_r_tbs_zvmctr_guest_assc.html

explains what to do - good luck


Richard (Gaz) Gasiorowski
Global System z Linux /AO Mainframe Services
Product Manager
Americas RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
"Frank M. Ramaekers" 
To:
LINUX-390@VM.MARIST.EDU
Date:
12/18/2009 01:56 PM
Subject:
Re: CentOS 4.7 on zSeries



Also:

Device   Subchan.  DevType CU Type Use  PIM PAM POM  CHPIDs
--
0.0.0600 0.0.  1732/01 1731/01 yes  80  80  FF   0100 
0.0.0601 0.0.0001  1732/01 1731/01 yes  80  80  FF   0100 
0.0.0602 0.0.0002  1732/01 1731/01 yes  80  80  FF   0100 
0.0.0700 0.0.0003  1732/01 1731/01  80  80  FF   0200 
0.0.0701 0.0.0004  1732/01 1731/01  80  80  FF   0200 
0.0.0702 0.0.0005  1732/01 1731/01  80  80  FF   0200 
0.0.0191 0.0.0006  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.0200 0.0.0007  3390/0A 3990/E9 yes  F0  F0  FF   A1B1C1D1 
0.0.0201 0.0.0008  3390/0A 3990/E9 yes  F0  F0  FF   A1B1C1D1 
0.0.0202 0.0.0009  3390/0A 3990/E9 yes  F0  F0  FF   A1B1C1D1 
0.0.0203 0.0.000A  3390/0A 3990/E9 yes  F0  F0  FF   A1B1C1D1 
0.0.0009 0.0.000B  /00 3215/00 yes  80  80  FF    
0.0.000C 0.0.000C  /00 2540/00  80  80  FF    
0.0.000D 0.0.000D  /00 2540/00  80  80  FF    
0.0.000E 0.0.000E  /00 1403/00  80  80  FF    
0.0.0190 0.0.000F  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.019E 0.0.0010  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.019D 0.0.0011  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.0402 0.0.0012  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.0401 0.0.0013  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.0405 0.0.0014  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151
0.0.0120 0.0.0015  3390/0A 3990/E9  FF  FF  FF   2050A0B0 C0D02151

Frank M. Ramaekers Jr.
Systems Programmer   MCP, MCP+I, MCSE & RHCE
American Income Life Insurance Co.   Phone: (254)761-6649
1200 Wooded Acres Dr.Fax:   (254)741-5777
Waco, Texas  76710





-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Andrew Avramenko
Sent: Friday, December 18, 2009 9:52 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: CentOS 4.7 on zSeries

1) check with q v nic if it is attached to vswitch
if no, chech if you gave permissions (set vswitch NAME grant GUEST)

2) modprobe vmcp

2009/12/18 Frank M. Ramaekers :
> I've just loaded CentOS 4.7 in a VM (z/VM 5.4) and am experiencing some
> problems:
>
> 1)  I have a VSWITCH that I can't seem to get working (already have
> a eth0 with a real OSA-X)
>
> 2)  The vmcp device seems to be missing:
> # vmcp q t
> Error: Could not open device /dev/vmcp: No such file or directory
>
> Thanks,
>
>
> Frank M. Ramaekers Jr.
> Systems Programmer   MCP, MCP+I, MCSE & RHCE
> American Income Life Insurance Co.   Phone: (254)761-6649
> 1200 Wooded Acres Dr.Fax:   (254)741-5777
> Waco, Texas  76710
>
>
> _
> This message contains information which is privileged and confidential
and is solely for the use of the
> intended recipient. If you are not the intended recipient, be aware that
any review, disclosure,
> copying, distribution, or use of the contents of this message is
strictly prohibited. If you have
> received this in error, please destroy it immediately and notify us at
privacy...@ailife.com.
>
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--
With best regards,
Andrew

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_

Re: assembler and LINUX

[Richard Gasiorowski]

My guess is you speak of s390 assembler which "gas" is not. It is more
like UNIX assembler.  A good starting point for you to go to and see if
you REALLY want to venture into this
http://en.wikipedia.org/wiki/Assembly_language

I think you will agree that it lacks the versatility of BAL s390.

Richard (Gaz) Gasiorowski
Global System z Linux Virutalization and Mainframce Services Product
Manager
Americas RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Patrick Spinler 
To:
LINUX-390@VM.MARIST.EDU
Date:
11/19/2009 02:55 PM
Subject:
Re: assembler and LINUX



-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Thomas David Rivers wrote:
>> Hello !
>> I am an experienced assembler programmer, BUT I do not have any clue
how
>> to write , assemble  etc. in  LINUX  ,   where do I start   ??   Any
help
>> is appreciated . Thanks Gunter
>>

gas, part of the gnu compiler suite, is the standard supported assembler
on (most? all?) linuxes.

As other posters mentioned, though, programming in assembly is
incredibly rare, and only done in very specific niches.  Otherwise, at
least program in c, if not something higher.

If you're very experienced in assembler, transitioning to c will be
relatively painless.  Many of the issues that people have a hard time
wrapping their technique around, such as pointers and memory
(de)allocation, are very familiar to assembly coders.

- -- Pat

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

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Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2

[Richard Gasiorowski]

Gerald,

Good stuff - has IBM published any studies or can you provide? 


Richard (Gaz) Gasiorowski
Global System z Linux Virutalization and Mainframce Services Product 
Manager
Americas RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Gerald Schaefer 
To:
LINUX-390@VM.MARIST.EDU
Date:
11/17/2009 08:36 AM
Subject:
Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2



Hi,

you should see a large benefit in page table memory consumption with 
applications
that use lots of processes on shared (hugepage) memory mappings. IIRC, 
Oracle
should also benefit from this.

You will save 2 MB of page table memory per 1 GB of shared memory mapping, 

per
process. This will scale with the size of the memory mapping and the 
number of
processes, up to the point that you can save more memory used for page 
tables
than you were actually sharing between the processes. For example, with 
1000
processes sharing 1 GB of (hugepage) memory, you will save 2 GB of memory 
that
would otherwise be used for page tables w/o hugepages.

Mit freundlichem Gruß / Kind regards,

Gerald Schäfer

Linux on System z Development
IBM Systems &Technology Group, Systems Software Development / SW Linux für 

zSeries Entwicklung
---
IBM Deutschland
Schoenaicher Str. 220
71032 Boeblingen
Phone: +49-7031-16-2275
Fax: +49-7031-16-3456
E-Mail: geral...@de.ibm.com
---
IBM Deutschland Research & Development GmbH / Vorsitzender des 
Aufsichtsrats: Martin Jetter
Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, 

HRB 243294


Linux on 390 Port  wrote on 11/16/2009 06:20:51 
PM:

> From:
> 
> Richard Gasiorowski 
> 
> To:
> 
> LINUX-390@VM.MARIST.EDU
> 
> Date:
> 
> 11/16/2009 06:21 PM
> 
> Subject:
> 
> Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2
> 
> Jakub,
> 
> I do not see the benefit of hugepages and system z linux.  My answer is 
> simply does not apply. 
> 
> Richard (Gaz) Gasiorowski
> Global System z Linux Virutalization and Mainframce Services Product 
> Manager
> Americas RPE Portfolio Platform Services
> CSC
> 3170 Fairview Park Dr., Falls Church, VA 22042
> 845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com
> 
> 
> 
> 
> This is a PRIVATE message. If you are not the intended recipient, please 


> delete without copying and kindly advise us by e-mail of the mistake in 
> delivery. 
> NOTE: Regardless of content, this e-mail shall not operate to bind CSC 
to 
> any order or other contract unless pursuant to explicit written 
agreement 
> or government initiative expressly permitting the use of e-mail for such 


> purpose.
> 
> 
> 
> From:
> Joe Comitini 
> To:
> LINUX-390@VM.MARIST.EDU
> Date:
> 11/16/2009 11:15 AM
> Subject:
> Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2
> 
> 
> 
> We're looking into it but I think the official word is that it's not 
> supported by Oracle ... Please check with your Oracle rep
> 
> Joe
> 
> -Original Message-
> From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of 
> Szefler Jakub
> Sent: Friday, November 06, 2009 6:08 AM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Hugepages+oracle 10.0.2.0.4 in sles10SP2
> 
> Hi,
> Did someone configure oracle and hugepages under SLES10SP2 and it works 
?
> 
> 
> Jakub Szefler
> Administrator Mainframe
> 
> Pion Operacji IT Grupy TP/Departament Infrastruktury Wydział 
> Infrastruktury Informatycznej Dział Platform Serwerowych i Pamięci 
> Masowych
> 
> 
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&

Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2

[Richard Gasiorowski]

Jakub,

I do not see the benefit of hugepages and system z linux.  My answer is 
simply does not apply. 

Richard (Gaz) Gasiorowski
Global System z Linux Virutalization and Mainframce Services Product 
Manager
Americas RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please 
delete without copying and kindly advise us by e-mail of the mistake in 
delivery. 
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to 
any order or other contract unless pursuant to explicit written agreement 
or government initiative expressly permitting the use of e-mail for such 
purpose.



From:
Joe Comitini 
To:
LINUX-390@VM.MARIST.EDU
Date:
11/16/2009 11:15 AM
Subject:
Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2



We're looking into it but I think the official word is that it's not 
supported by Oracle ... Please check with your Oracle rep

Joe

-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of 
Szefler Jakub
Sent: Friday, November 06, 2009 6:08 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Hugepages+oracle 10.0.2.0.4 in sles10SP2

Hi,
Did someone configure oracle and hugepages under SLES10SP2 and it works ?


Jakub Szefler
Administrator Mainframe

Pion Operacji IT Grupy TP/Departament Infrastruktury Wydział 
Infrastruktury Informatycznej Dział Platform Serwerowych i Pamięci 
Masowych


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Re: Query: What is 'best-fit' to run on Linux for z ?

[Richard Gasiorowski]

Tore,

Do yourself a huge service.  Do not fall into the plot of only focusing on 
server utilization.  Ensure you focus as much if not more effort on 
software cost. 

Staffing, run and maintain and facilities are debatable or not verifiable 
until some time has past.Software cost improves the value of zLinux 
and can be factored.  Keep it simple.  Break it out by application and see 
if there is  a case for strategic direction. 

My experience in our RFPs has been a surprise.  I have been able to make a 
better business case with high utilized DB servers moving to zlinux then 
any other service. Why?  Software cost and the architecture of System z. 
Even though there are less instances. 

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager 
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
"Graves, Aaron" 
To:
LINUX-390@VM.MARIST.EDU
Date:
11/04/2009 08:16 AM
Subject:
Re: Query: What is 'best-fit' to run on Linux for z ?



Tore,

In this new Redbook - 
http://www.redbooks.ibm.com/redbooks/pdfs/sg247727.pdf Chapter 8 has a 
good overview of an application selection process.

Aaron

-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of 
Agblad Tore
Sent: Wednesday, November 04, 2009 7:24 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Query: What is 'best-fit' to run on Linux for z ?

Thank's Barton, the direct swedish->english translation would in fact be 
'low hanging fruit'  ;)

Cordialement / Vriendelijke Groeten / Best Regards / Med Vänliga 
Hälsningar
  Tore Agblad

   Volvo Information Technology
   Infrastructure Mainframe Design & Development
   SE-405 08, Gothenburg  Sweden
   E-mail: tore.agb...@volvo.com

   http://www.volvo.com/volvoit/global/en-gb/

From: Linux on 390 Port [linux-...@vm.marist.edu] On Behalf Of Barton 
Robinson [bar...@vm1.velocity-software.com]
Sent: Wednesday, November 04, 2009 13:16
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Query: What is 'best-fit' to run on Linux for z ?

Tore, "z" does lots and lots of little things really well, and is
designed to support high resource utilization.  Any software or hardware
that is used 2% (or even 10%) of the time is a huge cost for
underutilized resource. Measuring your "x" servers and showing
utilizations is the first step.  Any servers that are running
applications easily ported to linux on z that are using small amounts of
CPU are easy. This is probably 80% of your "x" servers.  Pick the low
lying fruit (american saying i guess?).

If management is convinced by dollars/Euros/Krona savings, then that is
the best approach.  Come up with a REAL TCO spreadsheet with valid costs
that include environmentals, people, software and hardware. If
management is more motivated by religion (P vs X vs Z vs Unix), then
focus on RAS and Openness of Linux.

Agblad Tore wrote:
> Hi.
> I have a small job to do here, creating a list of what type of Linux 
load/services/apps is best fit
> to run on z, compared to x86.
> And it suddenly strucked me, this list contains lot's of persons that 
can answer this question.
>
> Also what did you find most easy to convince management to use it for.
>
> What was most successful ?
>
> We may can achieve something here, if we all go in the same direction ??
>
> Cordialement / Vriendelijke Groeten / Best Regards / Med Vänliga 
Hälsningar
>   Tore Agblad
>
>Volvo Information Technology
>Infrastructure Mainframe Design & Development
>SE-405 08, Gothenburg  Sweden
>E-mail: tore.agb...@volvo.com
>
>http://www.volvo.com/volvoit/global/en-gb/
> 
>
> --
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>
>

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Re: VM-Linux

[Richard Gasiorowski]

Ron

I was keying in in the GC code the java level and the fact its websphere 7
64 bit.  Not sure if 64 bit has been tested with the Java version.

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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From:
Ron Wells 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 04:05 PM
Subject:
Re: VM-Linux



?? maybe not understanding... not failing just eating up machine .. IFL
just about pinged out on usage . with one app.WAS with the Java



From:
Richard Gasiorowski 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 02:56 PM
Subject:
Re: VM-Linux
Sent by:
Linux on 390 Port 



Very strange and this might not be an exact match but try googling WSRR
6.3 fails deploy on WAS 7.0.0.5

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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purpose.



From:
Ron Wells 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 03:51 PM
Subject:
Re: VM-Linux



tried going to link and get page not found



From:
Richard Gasiorowski 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 02:46 PM
Subject:
Re: VM-Linux
Sent by:
Linux on 390 Port 



http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14297138&tstart=0





Sounds like a known issue.

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
delivery.
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



From:
Ron Wells 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 03:31 PM
Subject:
Re: VM-Linux



Having some issues that maybe some here can lead us in direction to
investigate ..
Running on 2096.Q03
z/OS1.9 in (3) lpar's
(1) lpar VM5.4 with

Linux: SLES 10 SP2  - 2.6.16.60-0.42.4-default

WebSphere 7 64-bit (with some fix packs - not sure what level)

Java(TM) SE Runtime Environment (build
pxz6460sr5ifix-20090623_01(SR5+151659+151951+151086+151619+151750+152177+152017+152507))
IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Linux s390x-64
jvmxz6460sr5ifx-20090612_37149 (JIT enabled, AOT enabled)
J9VM - 20090612_037149_BHdSMr
JIT  - r9_20090518_2017
GC   - 20090417_AA)
JCL  - 20090623_01

Problem/issue ... IFL running above 90% and at times pinged to the wall..
They>> linux/java people just starting to get things running and
performance issues coming up..
Not sure where to start looking ..
No monitor's(3rd party) running slim to non ..
anything we can start to look at...?

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Re: VM-Linux

[Richard Gasiorowski]

Very strange and this might not be an exact match but try googling WSRR
6.3 fails deploy on WAS 7.0.0.5

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
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purpose.



From:
Ron Wells 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 03:51 PM
Subject:
Re: VM-Linux



tried going to link and get page not found



From:
Richard Gasiorowski 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 02:46 PM
Subject:
Re: VM-Linux
Sent by:
Linux on 390 Port 



http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14297138&tstart=0



Sounds like a known issue.

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
delivery.
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



From:
Ron Wells 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 03:31 PM
Subject:
Re: VM-Linux



Having some issues that maybe some here can lead us in direction to
investigate ..
Running on 2096.Q03
z/OS1.9 in (3) lpar's
(1) lpar VM5.4 with

Linux: SLES 10 SP2  - 2.6.16.60-0.42.4-default

WebSphere 7 64-bit (with some fix packs - not sure what level)

Java(TM) SE Runtime Environment (build
pxz6460sr5ifix-20090623_01(SR5+151659+151951+151086+151619+151750+152177+152017+152507))
IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Linux s390x-64
jvmxz6460sr5ifx-20090612_37149 (JIT enabled, AOT enabled)
J9VM - 20090612_037149_BHdSMr
JIT  - r9_20090518_2017
GC   - 20090417_AA)
JCL  - 20090623_01

Problem/issue ... IFL running above 90% and at times pinged to the wall..
They>> linux/java people just starting to get things running and
performance issues coming up..
Not sure where to start looking ..
No monitor's(3rd party) running slim to non ..
anything we can start to look at...?

--
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Re: VM-Linux

[Richard Gasiorowski]

http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14297138&tstart=0

Sounds like a known issue.

'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



From:
Ron Wells 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/22/2009 03:31 PM
Subject:
Re: VM-Linux



Having some issues that maybe some here can lead us in direction to
investigate ..
Running on 2096.Q03
z/OS1.9 in (3) lpar's
(1) lpar VM5.4 with

Linux: SLES 10 SP2  - 2.6.16.60-0.42.4-default

WebSphere 7 64-bit (with some fix packs - not sure what level)

Java(TM) SE Runtime Environment (build
pxz6460sr5ifix-20090623_01(SR5+151659+151951+151086+151619+151750+152177+152017+152507))
IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Linux s390x-64
jvmxz6460sr5ifx-20090612_37149 (JIT enabled, AOT enabled)
J9VM - 20090612_037149_BHdSMr
JIT  - r9_20090518_2017
GC   - 20090417_AA)
JCL  - 20090623_01

Problem/issue ... IFL running above 90% and at times pinged to the wall..
They>> linux/java people just starting to get things running and
performance issues coming up..
Not sure where to start looking ..
No monitor's(3rd party) running slim to non ..
anything we can start to look at...?

--
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sender, which  may be legally privileged information.  This information is
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If you are not  the  intended  recipient, or  an  employee  or  agent
responsible for delivering it to the intended recipient, you are hereby
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Re: SuSE Withdrawal

[Richard Gasiorowski]

>From our company's Novell contact

It is nothing exciting; IBM is not dropping SUSE support, just support for
a bundled stack of software, called ISSLE, which was geared for mid-market
companies.  It included a special web server configuration and was
supposed to go after Windows servers running IIS and some of the File and
Print space.  ISSLE was a specialized SKU only promoted by IBM.  It didn't
sell well (most mid-market companies don't host their own websites
anymore), so IBM decided to drop the SKU.  Novell does not even offer the
bundle itself.

http://www-01.ibm.com/cgi-bin/common/ssi/ssialias?infotype=an&subtype=ca&htmlfid=897/ENUS207-070&appname=usn&language=enus



'Where ever you go - There you are '

Richard (Gaz) Gasiorowski
Global Product Manager - System z Linux Virutalization
 Americas Regional Mainframe Services Manager
RPE Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



From:
Mike Friesenegger 
To:
LINUX-390@VM.MARIST.EDU
Date:
10/13/2009 10:34 AM
Subject:
Re: SuSE Withdrawal



The Integrated Stack product offer from Novell and IBM is a software
bundle for File and Print serving and Web Application
and Database serving for System z and System p running on SLES.  Novell
discontinued this product.  My guess is that IBM is removing this offer
from their product list as well.

Regards,





Michael Friesenegger
Linux/Data Center Technical Specialist
email: mfrieseneg...@novell.com



>>> On 10/13/2009 at 07:42 AM, in message
<20091013134252.ga20...@saltmine.radix.net>, "David L. Craig"

wrote:
> Did anyone besides me notice this among today's
> announcements?  What exactly does it signify?
>
>
http://www-01.ibm.com/common/ssi/rep_ca/0/897/ENUS909-210/ENUS909-210.PDF
>
> --
>
> 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
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or

> visit
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Re: NX or FreeNX

[Richard Gasiorowski]

Another possible one which our SE stated will be supported on zlinux is
eyeos.org


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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Mark Post 
Sent by: Linux on 390 Port 
06/16/2009 01:16 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: NX or FreeNX






>>> On 6/16/2009 at  6:11 AM, Rob van der Heij  wrote:
> Yes sure... I picked up the source rpm and built it (after
> xorg-x11-devel required a load of silly things like the spell checker
> and dictionaries...)  and the resulting binaries says it has a
> dependency on NX

Last night (late) I downloaded
http://download.opensuse.org/repositories/X11:/RemoteDesktop/SLE_10/src/NX-3.2.0-48.1.src.rpm
and built it on Slack/390.  It built first time, and will likely provide
the NX you're looking for.  At least, it includes nxproxy and nxagent in
it.

Any time you're looking for SRPMs that are intended to build in SLEx 10
(or 11, or earlier), go to http://software.opensuse.org/search and you'll
likely find what you want.  There are also Freenx SRPMs there.


Mark

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Re: zLinux and BMC Remedy

[Richard Gasiorowski]

I have, in the past month also approached BMC with the same request as
Mike and received the SAME answer.  We even offered to partner with them
by providing a lab to test it.  So it appears that unless they see they
are losing business I don't see them doing it.  At least by their
unresponsive history you can make that conclusion.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



Mike Hamner 
Sent by: Linux on 390 Port 
06/04/2009 10:33 AM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: zLinux and BMC Remedy






Brad,

We went through this with BMC.  They would not support the environment and
do not have a way of developing/testing patches if you run into an issue.
Our management determined the risks were to great so we decided to go with
vmware instead.  We highly encouraged BMC to support z/Linux for Remedy as
well as other BMC products in the future and they agreed to take it back
to
product development to determine of this is something they could do.  That
was about 6 months ago and we haven't heard anything else from them since.

Mike Hamner
National Business Center
U.S. Department of Interior




  From:   "Carson, Brad" 

  To: LINUX-390@VM.MARIST.EDU

  Date:   06/04/2009 08:18 AM

  Subject:zLinux and BMC Remedy

  Sent by:Linux on 390 Port 






Everyone,

We are looking at installing Remedy here and I was wondering if we could
do
that using Linux on z (RHEL 5.3).  Has anyone out there run Remedy on z?
BMC is not telling no, just that is a unvalidated environment.  So I'm
asking here to see if anyone else has tried.  Thanks.


Brad S. Carson
Laboratory Corporation of America
Phone: 336-436-8294
Fax: 336-436-1033
email: cars...@labcorp.com

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Re: High interrupt rate

[Richard Gasiorowski]

You can also issue the db2fmcu -d command.  This erases the fmc entries in
inittab.  Also ./sqllib/fm.whatever.reg  check the instances and make sure
everyone FM_ON and FM_ACTIVE are set to NO.

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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purpose.



Rob van der Heij 
Sent by: Linux on 390 Port 
05/26/2009 11:22 AM
Please respond to
Linux on 390 Port 


To
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Subject
Re: High interrupt rate






On Tue, May 26, 2009 at 5:10 PM, Deric Abel 
wrote:
> Hi,  I have an issue with one of my linux guests (sles10) where when we
enable HADR with db2 the HADR db guest interrupt rate jumps from a few
thousand to 300,000 per second.  This causes the guest to be using 20-30%
of one IFL, despite doing very little.  Has anyone seen this issue before,
or know of a good way to debug it?

Without performance data but you probably have db2fmcd running.
This has nothing to do with HADR but frequently interferes with it.
We're not sure whether it is a bug or design problem with db2fmcd that
it sometimes starts to poll. Combined with a kernel bug in SLES10 SP2,
it typically causes a lot of overhead. Since db2fmcd has no function
in this environment, the easy way out is to stop it (and remove the
entry in /etc/inittab )

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

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Re: server inventory ?

[Richard Gasiorowski]

Lionel,

We used OCS Inventory NG until we were accepted as a solution. Nice open 
source free software uses MySql for a DB. 

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager 
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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Lionel B Dyck  
Sent by: Linux on 390 Port 
05/14/2009 05:38 PM
Please respond to
Linux on 390 Port 


To
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Subject
server inventory ?






at the moment we do not have a cmdb, and even when we get one who knows 
how useful it will be. 

I'm looking for ideas on how to keep track of the linux servers under 
z/vm.  Right now I'm using a excel worksheet that allows filtering and 
sorting but otherwise is a pain (as I don't have a monitor that is 3' 
wide). 

Does anyone have anything that you really like that is easy to implement 
and keep current? 

thanks 
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.” 

“Never attribute to malice what can be caused by miscommunication.” 

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<>

Re: Setting up anon ftp

[Richard Gasiorowski]

Lionel,

When you ftp with anonymous the files known by the group ftp.  A quick 
bypass is to chmod the directory to 755 or 777 and that should get you in. 
Then I would look at the config file of you ftp application - for instance 
is vsftp change to this 
anon_mkdir_write_enable=NO
anon_other_write_enable=NO
# Security
anon_world_readable_only=NO


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager 
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please 
delete without copying and kindly advise us by e-mail of the mistake in 
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to 
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purpose.



Lionel B Dyck  
Sent by: Linux on 390 Port 
05/12/2009 10:10 AM
Please respond to
Linux on 390 Port 


To
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Subject
Setting up anon ftp






I setup a linux server (based on the novell starter kit) under z/vm to 
serve installation media. In the anonymous ftp directory /srv/repository 
(which the starter kit placed there) I created a link to my sles11 
directory which is mounted on /dev/dasdd1.  When I ftp in as anonymous I 
can see the sles11 directory: 

lrwxrwxrwx1 00  12 May 11 20:19 sles11 -> 
/sles/sles11 

But I can not cd to it 

ftp> cd sles11 
550 Failed to change directory. 

I'm baffled - any advice 

Thanks 
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.” 

“Never attribute to malice what can be caused by miscommunication.” 

NOTICE TO RECIPIENT: If you are not the intended recipient of this e-mail, 
you are prohibited from sharing, copying, or otherwise using or disclosing 
its contents. If you have received this e-mail in error, please notify the 
sender immediately by reply e-mail and permanently delete this e-mail and 
any attachments without reading, forwarding or saving them. Thank you. 

<>

Re: LoZ proc use Vs Linux under other platforms

[Richard Gasiorowski]

Local account team stated that the service over sized.   You were lucky I
tried on 3 separate occasions and never recieved any output.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
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purpose.



Harold Grovesteen 
Sent by: Linux on 390 Port 
05/06/2009 06:38 AM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: LoZ  proc use Vs Linux under other platforms






zRACE is still available. We did a rather incomplete study with still
interesting results in 2007. Of course, politics can make the effort
worthless. A senior manager simply refused to make any infrastructure
changes. So, executive sponsorship is important if you go down this
route. Contact your IBM account rep.

What problems did you perceive or had you heard about?

Harold Grovesteen

Richard Gasiorowski wrote:

>I use a cost model based on the traditional distributed serves. Basically
>you total the cost of the hdw (processor, memory, ficon, OSA, CEC when
new
>frame) plus the cost of linux. Use this base to determine cost per server
>per month.  You can add the middleware costs when you know them.  You can
>as I have compare the costs against the other platforms.  Of course
sizing
>is needed.  IBM use to have zRACE but the last I heard there were
problems
>with it but this would be a good starting point with you.  I cannot share
>my cost model tool company confidential.  It is based off of XCL
>spreadsheets.
>
>'Where ever you go - There you are!! '
>Richard (Gaz) Gasiorowski
>System z - Linux Product Manager
>Portfolio Platform Services
>CSC
>3170 Fairview Park Dr., Falls Church, VA 22042
>845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com
>
>
>
>
>This is a PRIVATE message. If you are not the intended recipient, please
>delete without copying and kindly advise us by e-mail of the mistake in
>delivery.
>NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
>any order or other contract unless pursuant to explicit written agreement
>or government initiative expressly permitting the use of e-mail for such
>purpose.
>
>
>
>Daniel Vila 
>Sent by: Linux on 390 Port 
>05/05/2009 02:32 PM
>Please respond to
>Linux on 390 Port 
>
>
>To
>LINUX-390@VM.MARIST.EDU
>cc
>
>Subject
>LoZ  proc use Vs Linux under other platforms
>
>
>
>
>
>
>Kurt, Mark,Erik tks for your quick response, some answers was very useful
>and self explanatory.
>I understand that mainframe use have several advantage when high i/o and
>high network throughput is required and couldn't be compared.
>But are there any cost table whatever be the processing unit that can be
>used to compare with other platforms ?
>
>
>
>
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>
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>
>

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Re: LoZ proc use Vs Linux under other platforms

[Richard Gasiorowski]

I use a cost model based on the traditional distributed serves.  Basically
you total the cost of the hdw (processor, memory, ficon, OSA, CEC when new
frame) plus the cost of linux. Use this base to determine cost per server
per month.  You can add the middleware costs when you know them.  You can
as I have compare the costs against the other platforms.  Of course sizing
is needed.  IBM use to have zRACE but the last I heard there were problems
with it but this would be a good starting point with you.  I cannot share
my cost model tool company confidential.  It is based off of XCL
spreadsheets.

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
delivery.
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



Daniel Vila 
Sent by: Linux on 390 Port 
05/05/2009 02:32 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
LoZ  proc use Vs Linux under other platforms






Kurt, Mark,Erik tks for your quick response, some answers was very useful
and self explanatory.
I understand that mainframe use have several advantage when high i/o and
high network throughput is required and couldn't be compared.
But are there any cost table whatever be the processing unit that can be
used to compare with other platforms ?




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Re: Control-D from 3270 ?

[Richard Gasiorowski]

Lionel,

Are you in single user mode?

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager 
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please 
delete without copying and kindly advise us by e-mail of the mistake in 
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to 
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or government initiative expressly permitting the use of e-mail for such 
purpose.



Lionel B Dyck  
Sent by: Linux on 390 Port 
05/04/2009 02:39 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Control-D from 3270 ?






Here is what happened: 

 mount  -o rw,remount /dev/dasda1  
(none):~ # fsck -f 
fsck -f  
fsck 1.38 (30-Jun-2005)  
error on stat() /dev/dasda1: No such file or directory 
e2fsck 1.38 (30-Jun-2005)  
/dev/dasda1 is mounted.  
  
WARNING!!!  Running e2fsck on a mounted filesystem may cause 
SEVERE filesystem damage.  
  
Do you really want to continue (y/n)? y  
yes  
  
fsck.ext3: No such file or directory while trying to open /dev/dasda1  
  
The superblock could not be read or does not describe a correct ext2 
filesystem.  If the device is valid and it really contains an ext2 
filesystem (and not swap or ufs or something else), then the superblock  
is corrupt, and you might try running e2fsck with an alternate superblock: 

e2fsck -b 8193   
  
fsck.ext3 /dev/dasda1 failed (status 0x8). Run manually! 
(none):~ # 
(none):~ # JBD: barrier-based sync failed on dasda1 - disabling barriers 

Thanks 
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.” 

“Never attribute to malice what can be caused by miscommunication.” 

NOTICE TO RECIPIENT: If you are not the intended recipient of this e-mail, 
you are prohibited from sharing, copying, or otherwise using or disclosing 
its contents. If you have received this e-mail in error, please notify the 
sender immediately by reply e-mail and permanently delete this e-mail and 
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From: 
Richard Gasiorowski  
To: 
LINUX-390@VM.MARIST.EDU 
Date: 
05/04/2009 11:34 AM 
Subject: 
Re: Control-D from 3270 ? 
Sent by: 
Linux on 390 Port 




Lionel,

You should try doing this

There was an error during boot and the root filesystem was mounted read 
only to prevent damage.   Remount the root filesystem as read/write. 
There's an  explicit mount option especially for this (which means 
that you're not the first person to ever have this problem, so don't 
despair):
  mount  -o rw,remount /dev/dasda1
You are probably also left in single user mode.  If not, boot again, 
saying
"linux 1".  Then run fsck -f to repair.

In your case it is not /  its dasdb1- I hope you have a lke image to 
determine wghat is mounted on dasdb1

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager 
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please 
delete without copying and kindly advise us by e-mail of the mistake in 
delivery. 
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to 
any order or other contract unless pursuant to explicit written agreement 
or government initiative expressly permitting the use of e-mail for such 
purpose.



Lionel B Dyck  
Sent by: Linux on 390 Port 
05/04/2009 02:25 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Control-D from 3270 ?






I entered 'exit' and nothing. 

here is my console log:

Checking all file systems. 
error on stat() /dev/dasdb1: No such file or directory 
Ý/sbin/fsck.ext3 (1) -- /usr¨ fsck.ext3 -a -f /dev/dasdb1 
error on stat() /dev/dasdb1: No such file or directory 
fsck.ext3: No such file or directory while trying to open /dev/dasdb1 
/dev/dasdb1: 
The superblock could not be read or does not describe a correct ext2 
filesystem.  If the device is valid and it really contains an ext2 
filesystem (and not swap or ufs or something else), then the superblock 
is corrupt, and you might try running e2fsck with an alternate superblock: 



   e2fsck -b 8193  

fsck.ext3 /dev/dasdb1 failed (status 0x8). Run manually! 
Ý1A..failedblogd: no message logging because /var file system is not 
accessible 

/etc/init.d/kbd: line 31: locale: com

Re: Control-D from 3270 ?

[Richard Gasiorowski]

Lionel,

You should try doing this

There was an error during boot and the root filesystem was mounted read 
only to prevent damage.   Remount the root filesystem as read/write.  
There's an  explicit mount option especially for this (which means 
that you're not the first person to ever have this problem, so don't 
despair):
   mount  -o rw,remount /dev/dasda1
You are probably also left in single user mode.  If not, boot again, 
saying
"linux 1".  Then run fsck -f to repair.

In your case it is not /  its dasdb1- I hope you have a lke image to 
determine wghat is mounted on dasdb1

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager 
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please 
delete without copying and kindly advise us by e-mail of the mistake in 
delivery. 
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to 
any order or other contract unless pursuant to explicit written agreement 
or government initiative expressly permitting the use of e-mail for such 
purpose.



Lionel B Dyck  
Sent by: Linux on 390 Port 
05/04/2009 02:25 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Control-D from 3270 ?






I entered 'exit' and nothing. 

here is my console log:

Checking all file systems. 
error on stat() /dev/dasdb1: No such file or directory 
Ý/sbin/fsck.ext3 (1) -- /usr¨ fsck.ext3 -a -f /dev/dasdb1 
error on stat() /dev/dasdb1: No such file or directory 
fsck.ext3: No such file or directory while trying to open /dev/dasdb1 
/dev/dasdb1: 
The superblock could not be read or does not describe a correct ext2 
filesystem.  If the device is valid and it really contains an ext2 
filesystem (and not swap or ufs or something else), then the superblock 
is corrupt, and you might try running e2fsck with an alternate superblock: 

 
e2fsck -b 8193  
 
fsck.ext3 /dev/dasdb1 failed (status 0x8). Run manually! 
Ý1A..failedblogd: no message logging because /var file system is not 
accessible 
 
/etc/init.d/kbd: line 31: locale: command not found 
No available keymaps for machine s390x found 
 
fsck failed for at least one filesystem (not /). 
Please repair manually and reboot. 
The root file system is is already mounted read-write. 
 
Attention: Only CONTROL-D will reboot the system in this 
maintanance mode. shutdown or reboot will not work. 
 
Give root password for login: JBD: barrier-based sync failed on dasda1 - 
disabli
ng barriers 
 
exit
Login incorrect. 
Give root password for login: 

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.? 

?Never attribute to malice what can be caused by miscommunication.? 

NOTICE TO RECIPIENT: If you are not the intended recipient of this e-mail, 

you are prohibited from sharing, copying, or otherwise using or disclosing 

its contents. If you have received this e-mail in error, please notify the 

sender immediately by reply e-mail and permanently delete this e-mail and 
any attachments without reading, forwarding or saving them. Thank you. 



From:
"Edmund R. MacKenty" 
To:
LINUX-390@VM.MARIST.EDU
Date:
05/04/2009 11:22 AM
Subject:
Re: Control-D from 3270 ?
Sent by:
Linux on 390 Port 



On Monday 04 May 2009 14:10, Lionel B Dyck wrote:
>I had a linux system crash and this is what I see on the z/VM console for
>it now:
>
>fsck failed for at least one filesystem (not /).
>Please repair manually and reboot.
>The root file system is is already mounted read-write.
>
>Attention: Only CONTROL-D will reboot the system in this
>maintanance mode. shutdown or reboot will not work.
>
>I've tried shutdown -r now and shutdown -rF now without success
>
>I don't know how to enter a Control-D from the 3270 console
>
>Any advice?

Try just typing "exit".  The CONTROL-D is just the Linux end-of-file 
character, and when you type that into an interactive shell it will 
terminate.  The "exit" command does the same thing.
 - MacK.
-
Edmund R. MacKenty
Software Architect
Rocket Software
275 Grove Street · Newton, MA 02466-2272 · USA
Tel: +1.617.614.4321
Email: m...@rs.com
Web: www.rocketsoftware.com 

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Re: cpuplugd and hung connections/defunct processes?

[Richard Gasiorowski]

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
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or government initiative expressly permitting the use of e-mail for such
purpose.



Leland Lucius 
Sent by: Linux on 390 Port 
04/30/2009 03:04 PM
Please respond to
Linux on 390 Port 


To
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Subject
Re: cpuplugd and hung connections/defunct processes?




Leland,

By the way How is it up there in the great white north?  This type of
condition you have experienced with a CLOSED_Wait is not uncommon in WAZ.
But again it is up to WAZ to close the connection once the WAIT is
detected.  Here are some scenarios where CLOSED_WAIT can occur
Local Server closes first:
ESTABLISHED -> FIN_WAIT_1-> FIN_WAIT_2 -> TIME_WAIT -> CLOSED.
Remote Server closes first:
ESTABLISHED -> CLOSE_WAIT -> LAST_ACK -> CLOSED.
Local and Remote Server close at the same time:
ESTABLISHED -> FIN_WAIT_1-> CLOSING ->TIME_WAIT -> CLOSED.

Some of TCP parms that can be of help
TCP_TIME_INTERVAL - Defaul value is 24 milliseconds = 4 minutes.
Recommended is 6 milliseconds
TCP_FIN_WAIT_2_FLUSH_INTERVAL - Default Value is 675000 milliseconds.
Recommended is 67500 milliseconds
TCP_KEEPALIVE_INTERVAL -Default Value is 720 milliseconds. Recommended
is 15000 milliseconds
Connection backlog - Default value is 128. Recommended is 8000

Richard Gasiorowski wrote:
> Leland,
>
> I don't see how cpuplugd would have anything to do with sockets waiting
to
> be closed by the application.
I was thinking that "maybe" there might have been some sort of race
condition or locking issues when the addition CPU was put offline.  Mind
you, I don't want this to be cpuplugd so if you don't think it could be
cpuplugd, then that's good enough for me.

> The SYN_RECV  is a result of the
> CLOSED_wait is what it seems to me.  This error in abundance normally is
> linked to the app. Websphere should notice the bad connection and issue
a
> close thru the OS.
> the obvious question is - was there maintenance applied to Websphere
> recently?
>
Well that would be a nice answer to have wouldn't it.  I don't think I'm
going to get a good answer on that one, but I may be able to sleuth it
out.

Leland

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Re: cpuplugd and hung connections/defunct processes?

[Richard Gasiorowski]

Leland,

I don't see how cpuplugd would have anything to do with sockets waiting to
be closed by the application.   The SYN_RECV  is a result of the
CLOSED_wait is what it seems to me.  This error in abundance normally is
linked to the app. Websphere should notice the bad connection and issue a
close thru the OS.
the obvious question is - was there maintenance applied to Websphere
recently?


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
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Leland Lucius 
Sent by: Linux on 390 Port 
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cpuplugd and hung connections/defunct processes?






Has anyone had any problems with connects hung in CLOSE_WAIT and defunct
processes while using cpuplugd?

We have a script that runs nightly that shuts down a Websphere instance
and it's been running just fine for months.  But, shortly after we
turned on cpuplugd, the script started to intermittently "hang" or fail
with a timeout, after which we get connections hung in a CLOSE_WAIT
state and a defunct process (or two): (sorry for the wrappage)

pzawap02:/var/log # netstat -ntp
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address   Foreign Address
State   PID/Program name
tcp49144  0 172.16.205.190:11107172.16.205.187:44023
CLOSE_WAIT  -
tcp47944  0 172.16.205.190:11107172.16.205.190:43666
CLOSE_WAIT  -
tcp48744  0 172.16.205.190:11107172.16.205.187:43117
CLOSE_WAIT  -
tcp49144  0 172.16.205.190:11107172.16.205.190:43019
CLOSE_WAIT  -
tcp47944  0 172.16.205.190:11107172.16.205.187:45013
CLOSE_WAIT  -
tcp49136  0 172.16.205.190:11107172.16.205.190:44773
CLOSE_WAIT  -
tcp47944  0 172.16.205.190:11107172.16.205.190:44789
CLOSE_WAIT  -


pzawap02:/var/log # ps -ef
medwas   23974 1  0 Apr27 ?00:05:55 [java] 

After this happens, we seem to also be getting a buildup of connects in
a SYN_RECV state, but that might just be our F5 trying to find out the
state of the service.

The reason I suspect cpuplugd is that while the script was running, a
CPU was brought online and taken offline soon after:

Apr 29 20:46:01 pzawap02 sudo:  mfsched : TTY=unknown ;
PWD=/home/mfsched ; USER=root ; COMMAND=/bin/su - medwas -c
./stopServer2.sh
Apr 29 20:46:01 pzawap02 su: (to medwas) root on none
Apr 29 20:46:19 pzawap02 kernel: cpu 1 phys_idx=1 vers=FF ident=0C930E
machine=2094 unused=8000
Apr 29 20:46:29 pzawap02 kernel: Processor 1 spun down

Any ideas on how I could prove it WASN'T cpuplugd?  I'd rather not have
to turn it off...

Thanks much,

Leland

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v9fs

[Richard Gasiorowski]

I went out to sorgeforge to find out more about this and my first concern
that the last update for v9fs was 1/2006.  It does state that The v9fs
kernel code was merged into Linux's 2.6.14 development tree  marking a
fairly major transition for the v9fs project .


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Richard (Gaz) Gasiorowski
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CSC
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Patrick Spinler 
Sent by: Linux on 390 Port 
03/27/2009 11:01 AM
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Re: Solaris v. Linux






-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1


This is a really insanely cool idea, and one I've never considered.
Also network and union mounting /sys may be worthwhile ...

Thanks Erik.  I'm definitely going to look into this more closely.

- -- Pat

Erik N Johnson wrote:
> In an attempt to bring things back on topic for Scott, and everybody
> else who is supposed to keep e-mail work related (sorry guys!) I would
> like to point out a major feature of Linux that people seem to remain
> unaware of.  In Linux you can get virtually any piece of kernel
> information from the vfs through the novel /proc filesystem.  I have
> discussed this and other ports from the Plan 9 From Bell Labs
> operating system to Linux (especially the 9p kernel module.)  No other
> operating system has, to the best of my knowledge, any attempt at
> these features.  What's really great about this is that for a z/Linux
> farm you can easily use 9p to create a single virtual host whch has a
> /mnt all full of:
> /mnt
> /host1/proc
> /host2/proc
> ...
> /hostN/proc
>
> then a perl (or shell or python) script ( or ANY filesystem-aware
> program, which is pretty open-ended) can easily do:
>
> foreach host in hosts {
> displayRelevantInfo( /mnt/host/proc);
> }
>
> where hosts is the full set of Linux guests.
>
> Voila, pure Linux NOC w/out nasty, insecure SNMP.  With HiperSocket
> this is going to be VERY fast.  It DOES require a custom kernel on the
> virtual host which is serving as the NOC, as 9p is a kernel module.
>
> This is the type of thing that a GPL-compatible license brings to your
OS.
>
> Erik Johnson
>
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Re: Solaris v. Linux

[Richard Gasiorowski]

Guys

Interesting stuff - kinfd of like watching an arm wrestling match. Take it
offline and let us know when y'all come to agreement.  Thx


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
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David Boyes 
Sent by: Linux on 390 Port 
03/26/2009 03:04 PM
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Re: Solaris v. Linux






On 3/26/09 2:13 PM, "Jeff Savit"  wrote:

> I'm going to avoid partisan issues, or at least attempt to do so :-) but
> some corrections on Sun-specific stuff:

> The first part of that is correct, but not some of the other parts,
> including the bit about OpenSolaris on SPARC.

The head of Solaris development disagrees with you. The previous comment
was
a direct quote of his words.

> Solaris runs on millions of Intel
> systems now, and that's been an area of focus and investment (and should
> NOT be interpreted as disinvestment in SPARC).

Smoke screen. No one said you weren't investing in SPARC. I said that
there
were internal reasons that were slowing up OpenSolaris on SPARC.

> In fact, OpenSolaris for SPARC is certainly coming. You can see a bit of
> discussion of that at:
>http://www.opensolaris.org/jive/thread.jspa?threadID=78357&tstart=0

See above. There are a fair number of missing pieces still. Surprise--
they're some of the same missing pieces in the Z port. I wonder why. 8-)

>> They have been trying rather diligently to clean up the mess around
these
>> issues, but basically the incentive to do the clean up necessary to
make
>> this open-source-clean is not something they are prioritizing if
they're
>> struggling to survive. I can't really argue with that, much as I would
like
>> them to get on with it so I can do more to help them.
> Sun is indeed working diligently on this, and this is a priority, but
> not necessarily in areas that are important to David. Part of the reason
> for introducing new software in OpenSolaris, such as the replacement of
> the existing Solaris patch, package, and boot environment is to move to
> unencumbered replacements, as well as the reasons cited above.

All nice sounding, but that's not what your execs are saying to me. I
can't
give your official position (that's why you have the sun.com address), but
I
can tell it how I see it.

> DTrace is indeed cool, but the rest is simply wrong. DTrace and ZFS have
> been open-source since Day 1. ZFS exists on BSD and Mac OS X, and of
> course the issue with Linux is the incompatible license terms not the
> lack of source code. DTrace also runs on FreeBSD and Mac OS X.

Depends on if you consider CDDL to be open source. I don't find it
particularly open.

>> As cool as it is, dtrace syntax is fugly.
> No it ain't. :-) Oh, well, that's in the category of "degustibus non est
> disputandem". I find it a natural expression of the "too cool to be
> without" functionality, and in any case there's many pre-cooked scripts
> out there, and a GUI tool too. Like any other language it requires some
> study and application of effort, and until then it may look odd to the
> casual observer.

Any language where syntactic white space is significant is IMHO fugly.
Same
reason I think Python is fugly. And S. And Matlab/Macsyma for that matter.
Useful as all hell, but still fugly. No challenge that there are lots of
nifty examples, but that doesn't fix the basic syntactical complexity
ickyness.

Religious argument. We're allowed to disagree on the fugliness of Dtrace.
It is what it is. It didn't have to be what it is.

> I suggest you have a
> closer look at IPS before you dismiss it out of hand, too. It's not just
> the packaging, it's also the ability to build a boot environment based
> on a snapshot that can be rolled back, and only consumes disk space
> relative to the previous version. Very nice, IMO.

To some degree this strikes me as arguing "new for the sake of new". All
the
things you describe can be accomplished with apt and yum if you can rely
on
an sophisticated underlying filesystem. My contention is that we did NOT
need another entire design approach to software packaging just to
accomplish
what you describe. It's just another annoyance to maintaining a large
environment.

There are lots of good ideas in IPS. I tend to evaluate tools on three
things:

Existance -- does the tool actually exist and work at all?
Sufficiency -- is is sufficient to provide the design function?
Necessity -- is it necessa

Re: Posting etiquette

[Richard Gasiorowski]

Can we get back to zLinux issues? Enough -  now I have to build a rule to
block this subject matter.  Take it offline

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com




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Rob van der Heij 
Sent by: Linux on 390 Port 
03/16/2009 08:14 AM
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Re: Posting etiquette






On Sat, Mar 14, 2009 at 9:41 AM, Alan Cox 
wrote:

> The initial EU analysis is here but rather dry reading:
>
 
http://ec.europa.eu/justice_home/fsj/privacy/docs/studies/final_report_india_en.pdf
>
> The bigger question anyway is control and enforcement (by the company
and
> by the authorities)

And there is little hope that privacy rules will be enforced by the
public walking away from companies and organizations that have
demonstrated questionable behavior in this aspect. Privacy awareness
with the general public appears to be non-existing. At least in The
Netherlands people are willing to give up privacy in return of a
suggested possible simplification of finding criminals or chance on
small financial reward. We seem to have no issues with collecting DNA
profiles from every citizen, keeping detailed phone and email records
for 18 months, uncontrolled remote metering of gas, water and
electricity, etc.

Rob (yes, that's a tin foil hat I'm wearing)

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Re: How to determine which lpar a linux guest is hosted on ?

[Richard Gasiorowski]

you can use vmcp q lpars if you have the correct authorization for CP
queries

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
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Stewart Thomas J 
Sent by: Linux on 390 Port 
02/19/2009 10:12 AM
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Re: How to determine which lpar a linux guest is hosted on ?






On my RHEL4 system, I use cat /proc/sysinfo and it indicates the LPAR name
and guest name.



-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Bernie Wu
Sent: Thursday, February 19, 2009 9:09 AM
To: LINUX-390@VM.MARIST.EDU
Subject: How to determine which lpar a linux guest is hosted on ?

Hi Listers,
We have 2 LPARS, each hosting VM, which in turn hosts several linux
guests.
>From a Linux guest, how do I determine which LPAR the guest is on ?

TIA
Bernie Wu


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Re: Migration Off Reiser

[Richard Gasiorowski]

Hey Scully,

the best way we have found is to  tar up your data to a file (we use VTS)
then just make the new filesystem clean, and untar.



'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
System z - Linux Product Manager
Portfolio Platform Services
CSC
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"Scully, William P" 
Sent by: Linux on 390 Port 
02/12/2009 10:08 AM
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Migration Off Reiser






I believe that Reiser is no longer a preferred file system.  Does anyone
know of a document which describes a well-accepted technique for
migrating a server's file systems from one format to another?  Likely
we'll be moving (back) to EXT3.

Thanks in advance for any pointers!

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Re: Oracle, zlinux, and virtualization

[Richard Gasiorowski]

Thx Tom

Just what I was looking for

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
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Tom Duerbusch <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
12/03/2008 11:34 AM
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Re: Oracle, zlinux, and virtualization






PMFJI

On my smaller Oracle 10g R2, under SLES 10 SP2, with OEM running, I've
been able to get the SGA down to 140 MB, with PGA of 16 MB.  This can run
in a vsize of 600 MB with dual prioritized vdisk for swapping.

There are a lot of smaller applications, that don't need GB databases .
 And as we scale up, they can get more memory, WHEN, it is proven that
they need it.  The rules of thumb from the Intel side, just don't apply
with the mainframes.

Tom Duerbusch
THD Consulting

>>> Richard Gasiorowski <[EMAIL PROTECTED]> 12/3/2008 9:59 AM >>>
Chris,

Doesn't say much I was looking for avrage instance size and were you able
to decrease SGA sizes?  Stuff like that

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
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CSC
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"Little, Chris" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
12/03/2008 10:33 AM
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Subject
Re: Oracle, zlinux, and virtualization






http://www.vm.ibm.com/linux/serverco.pdf

Slide 9 has information on Oklahoma Department of human services.  It's
a little dated, but it's what we experienced back then.

> -Original Message-
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On
> Behalf Of Harder, Pieter
> Sent: Tuesday, December 02, 2008 3:41 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: Oracle, zlinux, and virtualization
>
> 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.
>
> Best regards,
> Pieter Harder
>
> [EMAIL PROTECTED]
> tel  +31-73-6837133 / +31-6-47272537
>
>
> -Oorspronkelijk bericht-
> Van: Linux on 390 Port [mailto:[EMAIL PROTECTED]
> Namens Pat Carroll
> Verzonden: dinsdag 2 december 2008 22:35
> Aan: LINUX-390@VM.MARIST.EDU
> Onderwerp: Re: Oracle, zlinux, and virtualization
>
> Our experience has been nothing but positive with regard to
> Oracle on zLinux (pardon the term), in terms of price/performance.
>
>
> Patrick Carroll  |  Enterprise Architect L.L.Bean, Inc.(r) |
> Double L St. |  Freeport ME 04033 http://www.llbean.com |
> [EMAIL PROTECTED] | 207.552.2426
>
>
> Brabant Water N.V.
> Postbus 1068
> 5200 BC  's-Hertogenbosch
> http://www.brabantwater.nl
> Handelsregister: 16005077
>
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Re: Oracle, zlinux, and virtualization

[Richard Gasiorowski]

Chris,

Doesn't say much I was looking for avrage instance size and were you able
to decrease SGA sizes?  Stuff like that

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
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"Little, Chris" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
12/03/2008 10:33 AM
Please respond to
Linux on 390 Port 


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Subject
Re: Oracle, zlinux, and virtualization






http://www.vm.ibm.com/linux/serverco.pdf

Slide 9 has information on Oklahoma Department of human services.  It's
a little dated, but it's what we experienced back then.

> -Original Message-
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On
> Behalf Of Harder, Pieter
> Sent: Tuesday, December 02, 2008 3:41 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: Oracle, zlinux, and virtualization
>
> 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.
>
> Best regards,
> Pieter Harder
>
> [EMAIL PROTECTED]
> tel  +31-73-6837133 / +31-6-47272537
>
>
> -Oorspronkelijk bericht-
> Van: Linux on 390 Port [mailto:[EMAIL PROTECTED]
> Namens Pat Carroll
> Verzonden: dinsdag 2 december 2008 22:35
> Aan: LINUX-390@VM.MARIST.EDU
> Onderwerp: Re: Oracle, zlinux, and virtualization
>
> Our experience has been nothing but positive with regard to
> Oracle on zLinux (pardon the term), in terms of price/performance.
>
>
> Patrick Carroll  |  Enterprise Architect L.L.Bean, Inc.(r) |
> Double L St. |  Freeport ME 04033 http://www.llbean.com |
> [EMAIL PROTECTED] | 207.552.2426
>
>
> Brabant Water N.V.
> Postbus 1068
> 5200 BC  's-Hertogenbosch
> http://www.brabantwater.nl
> Handelsregister: 16005077
>
> --
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Re: Oracle sites using ASM

[Richard Gasiorowski]

Rich

Here is a site with some great information.  Granted not done on system z
but if it were I would suspect the same performance ratio differences.

http://www.linuxjournal.com/article/8539

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
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Rich Smrcina <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
11/17/2008 07:02 PM
Please respond to
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Subject
Oracle sites using ASM






Are there sites running Oracle on Linux on System z that are also using
ASM (Automatic
Storage Management).

If so, did you compare the performance of ASM against a similar
configuration with LVM?
  What did you measure it with and what were the results?

Thanks.
--
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VM Assist, Inc.
Phone: 414-491-6001
Ans Service:  360-715-2467
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Re: Lx86

[Richard Gasiorowski]

Dave,

There really is no more need to beat this issue up on this open forum.  As
 I  stated in my previous email,  if you wish to speak to me further on
this question or explain etiquette to me - my contact info is below.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
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David Boyes <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/22/2008 10:40 AM
Please respond to
Linux on 390 Port 


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Subject
Re: Lx86






> I apologize to anyone I may have offended with my lacking of etiquette
on
> this question.

There's no way you could have known, which is why I took the time to
tell you the expectations. We tend to try to let people choose whether
they want to pursue more information rather than let the marketing
droids out of their pens. We all get enough of that everywhere else.

You got partial answers to indicate that there were more opportunities
available to you other than the answer from IBM, and you don't seem
happy with the responses you got. AFAIK, you haven't taken the
opportunity to pursue any of the other options, so we (I) suggested you
do so. That too is an answer.

> The question went south as soon as I asked - with remarks
> and non relevant discussions.  My understanding of an open forum was
> obviously incorrect.  So again I apologize.

No need to apologize. Now you understand the rules of discourse.

BTW, this is a significant difference in the VM and Linux on Z community
from the general Linux world. There is a basic expectation of civility
that is absent from the general Linux world, and I think it helps the
discussion. If you think *we're* uppity, the Linux kernel mailing list
is a whole 'nother universe of rude. 8-)

> I agree that vendor R&D are
> taboo.   The question was answered a while back by the vendor.

By *a* vendor. IBM isn't the only player here.

> As part of
> this etiquette list:  I would expect that inane humorous email
comments
> should also be strongly discouraged. They are rude.

And they are, when they get out of hand. Take a look at the list
archives, and you'll see lots of examples.

-- db

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Re: Lx86

[Richard Gasiorowski]

I apologize to anyone I may have offended with my lacking of etiquette on
this question.  The question went south as soon as I asked - with remarks
and non relevant discussions.  My understanding of an open forum was
obviously incorrect.  So again I apologize.  I agree that vendor R&D are
taboo.   The question was answered a while back by the vendor. As part of
this etiquette list:  I would expect that inane humorous email comments
should also be strongly discouraged. They are rude.  If someone has an
issue with my comments in the future feel free to contact me - my contact
info is below and always included in my emails.



'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Steve Carl <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/21/2008 03:03 PM
Please respond to
Linux on 390 Port 


To
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Subject
Re: Lx86






Point of list etiquette: If a commercial vendor offers a free, Open Source
solution, is it rude to talk about it here?

Steve Carl
[EMAIL PROTECTED]
Blog: http://on-being-open.blogspot.com
Blog @ BMC: http://talk.bmc.com/blogs/blog-carl/steve-carl/


On Tue, Oct 21, 2008 at 11:26 AM, David Boyes <[EMAIL PROTECTED]>
wrote:

>
> With a few tolerated exceptions, discussions of commercial offerings
> on-list is considered rude and is actively discouraged. Several people
> invited you to discuss your requirements off line. I suggest you take
> them up on it -- most people wouldn't expect to discuss product planning
> or active R&D projects in a public forum.
>

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Re: Lx86

[Richard Gasiorowski]

I must be missing something.  My original question was does IBM have an
LX86 product for zLinux. The answer is no.  So are you other vendors
saying you have something that works or not.  I am not talking windows
servers-  Linux servers.  Personally I am surprsied that IBM presents
zLinux as a platform to migrate many small linux x86 servers.  It also
states that the system p competes with the Unix large Suns and HP. Then
turns around and makes a product for the system p to address a need which
zlinux could use.  Very strategic and logical thinking.  No wonder they no
longer use THINK as their motto.



'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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David Boyes <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/17/2008 02:01 PM
Please respond to
Linux on 390 Port 


To
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cc

Subject
Re: Lx86






> At present, one can use it on intellish hardware with LVM modules to
run
> fully virtualised guests.

It works on more than just Intel gear. It does a fair job on POWER and
SPARC as well, plus building reliably on 390. The 390 code could use a
little optimization, but it does work.

>  From my POV it has a great advantage over xen in its being a standard
> part of the Linux kernel.

Yes. It has a lot of promise.

-- db

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Re: Lx86

[Richard Gasiorowski]

Alan,

I want IBM to say we can get it to ya!! :).  Alpha beta whatever.  Alan
this kind of tool helps in selling zlinux and overcomes one of the
arguments we constantly have to deal with at my company


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Alan Altmark <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/16/2008 05:04 PM
Please respond to
Linux on 390 Port 


To
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Subject
Re: Lx86






On Thursday, 10/16/2008 at 02:19 EDT, Richard Gasiorowski
<[EMAIL PROTECTED]> wrote:
> Whats QEMU?  And who is we're working on it.  I have a situation NOW
that
> can use this type of capability.  What I find interesting is the total
> "Hush" from the IBM team on this topic.

What do you want IBM to say, Gaz?  IBM has never said that all technology
it develops will be available on all platforms.

Alan Altmark
z/VM Development
IBM Endicott

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Re: Lx86

[Richard Gasiorowski]

Given the difference in endianness between x86(_64) and System z, I would
have to say this would be a rather bad idea.
IBM  has been able to get by this difference on the system p


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Mark Post <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/16/2008 04:26 PM
Please respond to
Linux on 390 Port 


To
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Subject
Re: Lx86






>>> On 10/16/2008 at 10:02 AM, in message
<[EMAIL PROTECTED]>,
Richard
Gasiorowski <[EMAIL PROTECTED]> wrote:
> Question for someone @ IBM.  Lx86 is a feature provided for on the p
> series whihc allows Linux binaries to execute on the p system without a
> recompile.

Given the difference in endianness between x86(_64) and System z, I would
have to say this would be a rather bad idea.

> Since IBM professes a philosophy of providing like platform
capabilities.
> the question is
>
> When can we expect this features functions available on the system z?  I
> would definitely sign up for alpha or beta testing of this.

A philosophy is not the same as a commitment,  If you really have to have
it, then http://bochs.sourceforge.net/  It has been proven to work (very
slowly) in the past.


Mark Post

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Re: Lx86

[Richard Gasiorowski]

I dont know about QEMU my original question was targeted for our IBM reps
on this forum.  Lx86 available for the system p allows x86 linux server
applications to execute on the system p without recompile or link.  So
again when will this same feature be available for the system z.   This
has NOTHING to do with WIndows servers;.  Its Linux on x86 type boxes.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Scott Rohling <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/16/2008 04:25 PM
Please respond to
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Subject
Re: Lx86






Ok - I'm intrigued - you're running QEMU under Linux under z/VM?  (and
then
some x86 OS under that?)

Scott Rohling

On Thu, Oct 16, 2008 at 10:47 AM, David Boyes <[EMAIL PROTECTED]>
wrote:

> You can partially do this now with QEMU. We're working on some
extensions
> to improve the usability.
>
>
>
>

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Re: Lx86

[Richard Gasiorowski]

This is about x86 servers running Linux NOT windows.  THis feature
availale on system p allows for Linux application binaries built on an x86
arch  to run on the sysem p





'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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RPN01 <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/16/2008 02:25 PM
Please respond to
Linux on 390 Port 


To
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Subject
Re: Lx86






I thought that graphics, in general, was not a good use of the System Z
resources?.? Aren't you looking at putting a high CPU load task onto the
mainframe server, rather than farming it out to the desktop, where it
belongs?

Now, maybe Windows servers would be a different idea altogether...

--
Robert P. Nix  Mayo Foundation.~.
RO-OE-5-55 200 First Street SW/V\
507-284-0844   Rochester, MN 55905   /( )\
-^^-^^
"In theory, theory and practice are the same, but
 in practice, theory and practice are different."




On 10/16/08 9:18 AM, "Rich Smrcina" <[EMAIL PROTECTED]> wrote:

> Richard Gasiorowski wrote:
>> Question for someone @ IBM.  Lx86 is a feature provided for on the p
>> series whihc allows Linux binaries to execute on the p system without a
>> recompile.
>> Since IBM professes a philosophy of providing like platform
capabilities.
>> the question is
>>
>> When can we expect this features functions available on the system z? I
>> would definitely sign up for alpha or beta testing of this.
>
> Watch this space...
>
> In Q1 2009 Mantissa will deliver a system that permits unaltered Windows
> operating systems to run under z/VM. Using a desktop appliance running
RDC,
> users will be able to connect to their virtual Windows images running in
the
> VM environment. Goodbye desktop hardware, remote maintenance, high power
> consumption, machine order lead time.
>
> --
>
> Rich Smrcina
> VM Assist, Inc.
> Phone: 414-491-6001
> Ans Service:  360-715-2467
> rich.smrcina at vmassist.com
> http://www.linkedin.com/in/richsmrcina
>
> Catch the WAVV!  http://www.wavv.org
> WAVV 2009 - Orlando, FL - May 15-19, 2009
>
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Re: Lx86

[Richard Gasiorowski]

Dave,

Whats QEMU?  And who is we're working on it.  I have a situation NOW that
can use this type of capability.  What I find interesting is the total
"Hush" from the IBM team on this topic.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.



David Boyes <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
10/16/2008 12:47 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Lx86






You can partially do this now with QEMU. We're working on some extensions
to improve the usability.



-Original Message-----
From: Linux on 390 Port on behalf of Richard Gasiorowski
Sent: Thu 10/16/2008 10:02 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Lx86

Question for someone @ IBM.  Lx86 is a feature provided for on the p
series whihc allows Linux binaries to execute on the p system without a
recompile.
Since IBM professes a philosophy of providing like platform capabilities.
the question is

When can we expect this features functions available on the system z?  I
would definitely sign up for alpha or beta testing of this.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
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Lx86

[Richard Gasiorowski]

Question for someone @ IBM.  Lx86 is a feature provided for on the p
series whihc allows Linux binaries to execute on the p system without a
recompile.
Since IBM professes a philosophy of providing like platform capabilities.
the question is

When can we expect this features functions available on the system z?  I
would definitely sign up for alpha or beta testing of this.


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Re: hsi0 and SuSE

[Richard Gasiorowski]

Mark

In my case, putting in the chanids (space separated) makes things work. 
Leaving it blank, or using commas to separate them makes things fail. The 
YAST netwrok screen GUI lists them in line item order.  There are no space 
or commas.
IBM OSA Express Network card (0.0.7000)│20.15.36.52   
IBM Hipersocket (0.0.f506) │192.0.1.52   
IBM Hipersocket (0.0.f507) │   
IBM Hipersocket (0.0.f508) │   
IBM OSA Express Network card (0.0.1000)│Not configured
 IBM OSA Express Network card (0.0.1001)│Not configured
IBM OSA Express Network card (0.0.1002)│Not configured
IBM IUCV   │Not configured 

Prior to the mitigation performed this list looked the same except for the 
IP address for Hipersocket.  It was stated as Not Configured prior to the 
action we took.  So again I see two SuSE problems.  1 -  3 IO addresses 
listed after configuration.  2 - I see no space or commas and the action 
we needed to perform.

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Mark Post <[EMAIL PROTECTED]> 
Sent by: Linux on 390 Port 
09/24/2008 04:34 PM
Please respond to
Linux on 390 Port 


To
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Subject
Re: hsi0 and SuSE






>>> On 9/24/2008 at  3:44 PM, in message
<[EMAIL PROTECTED]>, 
Richard
Gasiorowski <[EMAIL PROTECTED]> wrote: 
> No the Chandids were there correctly - in fact that appears to be an
> issue.  Why should the behavior of hsi be any different then OSA?  You 
do
> not see 3 addresses for OSA.  Do you agree this a SUSE bug?

I'm not sure, since I don't experience the same problem you do.  In my 
case, putting in the chanids (space separated) makes things work.  Leaving 
it blank, or using commas to separate them makes things fail.  So, from my 
perspective, the bug is in the field not being pre-populated by YaST. 
Comparing the contents of the resulting file in 
/etc/sysconfig/hardware/hwcfg-qeth-ccw-??? against a working one would be 
useful.  In any case, there is a bug in there somewhere.


Mark Post

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Re: hsi0 and SuSE

[Richard Gasiorowski]

No the Chandids were there correctly - in fact that appears to be an
issue.  Why should the behavior of hsi be any different then OSA?  You do
not see 3 addresses for OSA.  Do you agree this a SUSE bug?

'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-773-9243 Work|845-392-7889 Cell|[EMAIL PROTECTED]|www.csc.com




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Mark Post <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
09/24/2008 03:30 PM
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Subject
Re: hsi0 and SuSE






>>> On 9/24/2008 at 12:00 PM, in message
<[EMAIL PROTECTED]>,
Richard
Gasiorowski <[EMAIL PROTECTED]> wrote:
> Whats up with SuSE SP2 Sles10 and the necessity to add hsi0 to the group
> in order to make it work.
> YAST configures it but does not add to this directory.

When you used YaST to configure it, did you put the "chanids" into the
field provided?  E.g.,
0.0.0900 0.0.0901 0.0.0902

I believe there is a bug somewhere in the SP2 version of YaST, since this
field used to be pre-popluated for you.  I also don't believe it's
specific to HiperSocket interfaces.


Mark Post

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hsi0 and SuSE

[Richard Gasiorowski]

Whats up with SuSE SP2 Sles10 and the necessity to add hsi0 to the group
in order to make it work.
YAST configures it but does not add to this directory.

I guess this is directed to Mark Post or anyone who can provide me with a
valid reason.

One must issue

echo 0.0.f506,0.0.f507,0.0.f508 > /sys/bus/ccwgroup/drivers/qeth/group


'Where ever you go - There you are!! '
Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
CSC
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Re: Layer 2 on the VSWITCH --Take 3

[Richard Gasiorowski]

Support is right - I was at the t3 IN ENDICOTT and they emphasized it in
one of the presentations





'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
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Ryan McCain <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
08/18/2008 10:52 AM
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Subject
Layer 2 on the VSWITCH --Take 3






With the help of the people on this list I was able to determine DHCPD
wasn't working on our Linux guests because the VSWITCH was set to Layer 3.
 The suggestion was to set it to Layer 2.  Sounds simple enough, right?

Here is feedback from IBM on the issue:

--SNIP--
2. Another dependency is hardware.  Layer 2 support is available only on
z890,  z990, and  z9.Are you running  one of these?
--SNIP--



We have 2064 - z900, 2066 - z800 and 2084 - z990.Does this mean it's
not possible for us to run a DHCP server on one of our Linux guests? Maybe
this support guy is wrong???

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Re: Root filesystem

[Richard Gasiorowski]

All

IN this long diatribe about root file system no one has mentioned one of
the true got ya's - that is the symbolic links of  GRUB/LILO.

'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


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John Summerfield <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
08/14/2008 11:54 PM
Please respond to
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Subject
Re: Root filesystem






Ryan McCain wrote:
> Do you have every directory under / defined as its own filesystem? /etc,
/boot, /var, /opt, /lib, etc.. ?

Read the FHS which can be found at pathname.com.

I don't think anyone's managed to put /boot on anything but a bare
partition, at least on Intellish hardware. The system boot code has to
be able to be found and able to find the kernel & initial ramdisk.

/lib must be in the root filesystem, as must some others: see the FHS
for details.

/usr can be ro and shared.

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Cheers
John

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You cannot reply off-list:-)

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Re: Adding SuSE 10 dasd

[Richard Gasiorowski]

It should be on DVD 1 and in /suse/noarch directory.  SuSE's site
http://www.novell.com/products/linuxpackages/server10/s390x/makedev.html
states you do not need unless you are using FHS.




'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
USA
Registered in Nevada, USA No: C-489-59

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"Stahr, Lea" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
08/12/2008 10:37 AM
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Subject
Adding SuSE 10 dasd






I am trying to add disk to SuSE SLES 10. In SLES 8, I did a MAKEDEV to
create the device file, then did a format and a mkswap. I have no
MAKEDEV script (I did a FIND on it). How can I make a device file for a
new DASD?

Lea Stahr
zVM, Linux and zLinux Administrator
Navistar, Inc.
630-753-5445
[EMAIL PROTECTED]

CONFIDENTIALITY NOTICE:  This e-mail, and any attachments
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Re: SLES 9 coming up with / read-only

[Richard Gasiorowski]

Once your are up I would check the syslog and see what caused the read
only mount.

'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
USA
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Matt Gourley <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
08/06/2008 04:12 PM
Please respond to
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Subject
Re: SLES 9 coming up with / read-only






Mark Post wrote:
 On 8/6/2008 at  3:51 PM, in message <[EMAIL PROTECTED]>, Matt
Gourley

> <[EMAIL PROTECTED]> wrote:
> -snip-
>
>> I've already tried running an fsck on the filesystem.  Because I can't
>> write to it, I wound up shutting down and logging off the problem
>> system, LINKing its 201 disk MR to another running Linux system via
>> hcp(1), setting it online, and running fsck on it.  No problems found.
>>
>
> Did you do an fsck, or an "fsck -f" command?  What specific kernel level
are you at?
>
>
> Mark Post
>
>
I did an "fsck" only.  I did not run "fsck -f"

Our kernel is 2.6.5-7.308-s390x.

Also, I was able to at least remount the device r/w using Richard
Gasiorowski's suggestion of "mount -t ext2 -o rw,remount /dev/dasdb1 /"
When I do a "runlevel" it's telling me I'm in single-user mode.  I'm
going to try to specify runlevel 3, though that's listed as the default
in /etc/inittab.

-Matt

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Rm 25 Shields Bldg., University Park, PA 16802
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Re: SLES 9 coming up with / read-only

[Richard Gasiorowski]

OK, there was an error during boot and the root filesystem was
mounted read only to prevent damage.
 Remount the root filesystem as read/write.  There's an
explicit mount option especially for this (which means
that you're not the first person to ever have this
problem, so don't despair):

   mount -t ext2 -o rw,remount /dev/whatever
You are probably also left in single user mode.  If not, boot again,
saying
"linux 1".


'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
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Re: VNC problem

[Richard Gasiorowski]

Check you most likely have the Linux Firewall active

'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
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"Stahr, Lea" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
08/06/2008 02:47 PM
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Subject
VNC problem






I have a new SuSE 10 SP1 guest. I have started the VNCSERVER on Linux. I
cannot connect to it, the connections timeout from W2000 viewers. I am
using VNC 4.1.2. I have looked at the RealVNC site and cannot find the
problem. I do not know what is supplied with Linux. Should I try the
newer 4.4 viewer?

Lea Stahr
zVM, Linux and zLinux Administrator
Navistar, Inc.
630-753-5445
[EMAIL PROTECTED]


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Re: Problem with sendmail (and mailx)

[Richard Gasiorowski]

Check the /etc/mail/local-host-names
etc/hosts.allow
etc/host.deny  to see if zn019 is defined or not on the mailer

'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
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"CHAPLIN, JAMES (CTR)" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
08/01/2008 05:01 PM
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Subject
Problem with sendmail (and mailx)






We have several RHEL 4.5 servers running Oracle. Each is a clone of the
original. However I discovered that we can only send email from two
(using the mailx command). I am not an expert on sendmail, however I
have looked at every configuration file I can find to see if I can
locate a difference between the servers that work and the servers that
do not work and have come up empty. I looked at sendmail.cf and
submit.cf, and their respective *.mc files, with no differences found.



In the /etc/log/maillog file I found the following between servers
(working and not working):

Working:

Jul 31 14:58:59 zn023 sendmail[30613]: m6VIwxY2030613:
[EMAIL PROTECTED], ctladdr=root (0/0), delay=00:00:00,
xdelay=00:00:00, mailer=relay, pri=32986, relay=mailhost [10.159.4.16],
dsn=2.0.0, stat=Sent (Message accepted for delivery)



Fail to send:

Jul 31 14:48:50 zn019 sendmail[27586]: m6VImo9Z027586:
[EMAIL PROTECTED], ctladdr=root (0/0), delay=00:00:00,
xdelay=00:00:00, mailer=relay, pri=32985, relay=mailhost [10.159.4.16],
dsn=5.0.0, stat=Service unavailable



Does anyone have any insight to this and how/where the DSN values
(Delivery Status Notification) is set, where I may look to find the root
of this fail to send or any suggestions.



James Chaplin

Systems Programmer, MVS, zVM & zLinux

Base Technologies, Inc

(703) 921-6220


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Re: Cobbler anyone?

[Richard Gasiorowski]

Mainstar Provisioning Expert
http://www.mainstar.com/products/provisioningexpert/


'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


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Re: DNS Entries

[Richard Gasiorowski]

Have you set up SAMBA and winbind?

'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
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Tom Duerbusch <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
07/07/2008 01:41 PM
Please respond to
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Subject
Re: DNS Entries






The response from the network folks was interesting:

"I wouldn't have thought of this if you hadn't mentioned samba, but it
looks like the name got shoved into WINS somehow.  It is not listed in the
DNS server.

To test, I fired up a packet capture before I tried ping, so I could see
how my host learned about the name:

Source   Destination  Proto  Info
192.168.37.13205.235.227.50   DNSStandard query A
linux60.stlouiscity.com
205.235.227.50   192.168.37.13DNSStandard query response, No such
name
192.168.37.13205.235.227.52   NBNS   Name query NB LINUX60<00>
205.235.227.52   192.168.37.13NBNS   Name query response NB
192.168.193.160
192.168.37.13192.168.193.160  ICMP   Echo (ping) request
192.168.193.160  192.168.37.13ICMP   Echo (ping) reply

At some point, it must have registered itself within WINS, or WINS found
out about it and made note."

So, given that I didn't knowing try to use WINS (but I might have), and I
didn't install or bring up the DNS server, which, per the doc, would have
added the DNS entry, what might have caused this automagically process?

Also, given that LINUX61 was created the same way, and a "ping linux61"
still fails?

Thanks

Tom Duerbusch
THD Consulting

>>> Mark Perry <[EMAIL PROTECTED]> 7/3/2008 6:27 AM >>>
Tom Duerbusch wrote:
> Really, really dumb question.
>
> What would make a DNS server automagically add an entry into its list?
>
If you are using DHCP and the DHCP Server is configured to update the
associated DNS, that would do it "automagically".

Discuss with your network admin.

mark

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Re: Costing Model for Linux-390

[Richard Gasiorowski]

The cost model - TCO - I use at our company up to this point has always
been compared to another platform, whether it is a refresh or new business
( x86, pSeries, Iseries, Sun or HP).  I factor in cost for each server,
staffing to support ( this case I only show the difference in the build
and run maintain staffing - since sysadmin at the middleware  level
remains constant and the plus is that there is no need to retrain),  floor
space and electrical power needed to run.  On the electrical power grid is
where the system z shines, since you can (theoretically) get 3200 servers
in one footprint for no more the 5 KW and if you compare this to an x86
virtualization approach using our data center numbers consumes 122KW.  The
only additional charge is the hipervisor costs and kernel OS.  I do not
include cooling as a cost but show the advanced system z technique of
internal liquid cooling (much like your car) versus ambient which is the
warmer the room the hotter the servers runs thus the AC must run stronger
and that is hard to get a true factor for.

The other factors such as middleware software costs, future server
deployment techniques, kernel and midleware software maintenance savings
are presented in slides to highlight the benefit with system z and then a
custom TCO is built for each issue.  For instance, SAP in most cases is
based by the number of users, however, on any other platform except the
system z Oracle is available for SAP.  So then I highlight the incentives
that both SAP and IBM provide to use DB2 on z/OS.  Oracle pricing on its
own is, for instance z10 4 core processor,t 47K each core = 188K. However,
if you add another IFL to the LPAR you are only charged 75% of that cost.
As is obvious by now middleware is a fluent cost - especially with the
ISVs.  IBMs goes by value units which makes it easiet to customize and
compare.

Another factor to include is the Network and the cost reduction in
staffing, hardware, floor space, cooling, points of intrusion and failures
versus z/VMs capabilities. Security could be included here by taking the
encryption and decryption out of the network decreasing bandwidth and
hardware and using the built in crypto feature of the system z.

Finally I map this out for 5 years - of course the more the initial server
deployment the better the ROI.  However, if you plan to add servers to
this platform farm you can show additional ROIs based on no hardware
additions, only an IFL or IFL and memory.  Actually any combination there
of but one thing for certain it WILL provide a faster ROI then any
platform.  My average calculations have it against our x86 virtualization
concept of 1000 servers 13 months down to 40 servers 28 months.  BUt if I
add 40 servers to an existing CEC with no additional hardware its 10
months.  This makes the user happy and actually makes the CIO happy since
it cost us virtually nothing to put in place.


Cherish the thought of IT being a profit center.






'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
USA
Registered in Nevada, USA No: C-489-59

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Re: Error while connecting to DB2 Connect from z/Linux over HiperSockets

[Richard Gasiorowski]

Have you disabled the linux firewall?


'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
USA
Registered in Nevada, USA No: C-489-59

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"Evans, Kevin R" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
06/16/2008 12:13 PM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Error while connecting to DB2 Connect from z/Linux over HiperSockets






Sounds like there isn't a listener listening or maybe a firewall in the
way.

Kevin

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Richard Gasiorowski
Sent: Monday, June 16, 2008 11:58 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Error while connecting to DB2 Connect from z/Linux over
HiperSockets

Kevin the errno 113
#define EHOSTUNREACH113 /* No route to host */


'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia
22042,
USA
Registered in Nevada, USA No: C-489-59



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to
any order or other contract unless pursuant to explicit written
agreement
or government initiative expressly permitting the use of e-mail for such
purpose.


-




"Evans, Kevin R" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
06/16/2008 11:52 AM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Error while connecting to DB2 Connect from z/Linux over HiperSockets






Well, that's a shame, isn't it? Oh well, learn something every day.

Kevin

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Alan Altmark
Sent: Monday, June 16, 2008 11:32 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Error while connecting to DB2 Connect from z/Linux over
HiperSockets

On Monday, 06/16/2008 at 05:49 EDT, "Evans, Kevin R"
<[EMAIL PROTECTED]> wrote:
> Not sure if this is applicable or not, but on the z/OS comm. Server
> side...113 can mean several things all generically known as EBADF:
> Socket descriptor is not in a correct range
> Socket descriptor is already being used
> Socket has already been given
> Socket already taken
> "Listen" not been issued before an "Accept"
>
> Sounds like a coding error to me.

Kevin, the errno values in z/VM and z/OS do not match those in Linux.

Alan Altmark
z/VM Development
IBM Endicott

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Re: Error while connecting to DB2 Connect from z/Linux over HiperSockets

[Richard Gasiorowski]

Kevin the errno 113
#define EHOSTUNREACH113 /* No route to host */


'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
USA
Registered in Nevada, USA No: C-489-59

-
This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
delivery.
NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
any order or other contract unless pursuant to explicit written agreement
or government initiative expressly permitting the use of e-mail for such
purpose.
-




"Evans, Kevin R" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port 
06/16/2008 11:52 AM
Please respond to
Linux on 390 Port 


To
LINUX-390@VM.MARIST.EDU
cc

Subject
Re: Error while connecting to DB2 Connect from z/Linux over HiperSockets






Well, that's a shame, isn't it? Oh well, learn something every day.

Kevin

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Alan Altmark
Sent: Monday, June 16, 2008 11:32 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Error while connecting to DB2 Connect from z/Linux over
HiperSockets

On Monday, 06/16/2008 at 05:49 EDT, "Evans, Kevin R"
<[EMAIL PROTECTED]> wrote:
> Not sure if this is applicable or not, but on the z/OS comm. Server
> side...113 can mean several things all generically known as EBADF:
> Socket descriptor is not in a correct range
> Socket descriptor is already being used
> Socket has already been given
> Socket already taken
> "Listen" not been issued before an "Accept"
>
> Sounds like a coding error to me.

Kevin, the errno values in z/VM and z/OS do not match those in Linux.

Alan Altmark
z/VM Development
IBM Endicott

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Re: SuSe LINUX Enterprise starter system for z - next hurdle

[Richard Gasiorowski]

CPFORMATXA the dasda device under VM?


'Where ever you go - There you are!! '

Richard (Gaz) Gasiorowski
Global Solutions & Technology
Principal Lead Infrastructure Architect
845-773-9243 Work
845-392-7889 Cell
[EMAIL PROTECTED]


Computer Sciences Corporation
Registered Office: 3170 Fairview Park Drive, Falls Church, Virginia 22042,
USA
Registered in Nevada, USA No: C-489-59

-
This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise us by e-mail of the mistake in
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NOTE: Regardless of content, this e-mail shall not operate to bind CSC to
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