Implementing DLm with VM:Tape is fairly easy. Does not use DFSMSrmm. I set it
up several years ago at UnitedHealth/Optum. No longer have access. 😊
I passed on doc to Rick Barlow several months ago, so he may be able to share
his experience.
From: Linux on 390
vmcp q v 0201
> Date: Tue, 27 Mar 2012 08:34:38 -0400
> From: baue...@mail.nih.gov
> Subject: Displaying the volsers
> To: LINUX-390@VM.MARIST.EDU
>
> I know there is a way to display the actual volsers that are attached to a
> Redhat Linux server but I can't find the command. For instance:
>
:31:53
Mark Wheeler
UnitedHealth Group
--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visi
the next s390-tools
> update on developerWorks and submit patches for the distributions. In the
> meantime, the only way I see for doing correct multiplications in cpuplugd
> rules is to use inverse division instead.
>
> Regards,
> Gerald Schaefer
>
> Linux on System z
nly 2) and 4) perform as expected.
Has anyone else seen this? Is able to reproduce? Show me the error of my ways?
This is on RHEL 5.5 2.6.18-194.3.1.el5.
Mark Wheeler
UnitedHealth Group
--
"Excellence. Always. If Not Excellence, What? If Not Excell
> Date: Fri, 18 Mar 2011 14:19:28 +0100
> From: co...@de.ibm.com
> Subject: Re: Where is kernel loaded in memory?
> To: LINUX-390@VM.MARIST.EDU
>
> Quote: The larger problem is going to be getting buy-in from the app owner
> to implement such a thing.
>
> Actually, all you need to do is _insta
Mark,
That's an excellent suggestion, inasmuch as we have a couple dozen of these
servers running and, if nothing else, sharing code could reduce overall demand
for memory. Obviously, the bigger win would be if this is the code that is
actually being paged in and causing the delays, since by s
Marcy,
Good suggestions. Alas:
1) The app doesn't use java, and
2) The customer refuses to run "prime the pump"-type scripts because they claim
it would just mask the problem
Mark
> Date: Thu, 17 Mar 2011 15:47:12 -0500
> From: marcy.d.cor...@wellsfargo.com
> Subject: Re: Where is kernel l
but I think it may force these guests to look like polling guests,
in that pages will only be paged out during emergency scan, e.g probably not
the pages you want. Hence, as Rob van der Heij has recommended, you may need to
beef up your XSTOR.
Mark Wheeler
UnitedHealth Group
> Date: Thu
MQ Broker.
> Date: Thu, 17 Mar 2011 12:22:35 -0500
> From: marcy.d.cor...@wellsfargo.com
> Subject: Re: Where is kernel loaded in memory?
> To: LINUX-390@VM.MARIST.EDU
>
> Mark, is this WAS? Is it possible it involves the heap? (BTDT :)
>
>
> Marcy
> Date: Thu, 17 Mar 2011 12:22:35 -0500
> From: marcy.d.cor...@wellsfargo.com
> Subject: Re: Where is kernel loaded in memory?
> To: LINUX-390@VM.MARIST.EDU
>
> Mark, is this WAS? Is it possible it involves the heap? (BTDT :)
>
>
> Marcy
>
MQ Broker.
proc/iomem answered my immediate question. As necessary, I'll toss
further questions out to the list.
Thanks all!
Mark Wheeler
UnitedHealth Group
> Date: Thu, 17 Mar 2011 11:30:27 -0600
> From: nix.rob...@mayo.edu
> Subject: Re: Where is kernel loaded in memory?
> To: LINU
Thanks Mark. Alas, my question was incomplete... it's loaded from 0 to where?
Mark Wheeler
UnitedHealth Group
> Date: Wed, 16 Mar 2011 13:32:52 -0600
> From: mp...@novell.com
> Subject: Re: Where is kernel loaded in memory?
> To: LINUX-390@VM.MARIST.EDU
>
> >&
Greetings all,
Is there a way to tell externally (command or otherwise) where the zLinux
kernel is loaded in memory?
Thanks!
Mark Wheeler
UnitedHealth Group
--
"Excellence. Always. If Not Excellence, What? If Not Excellence Now, When?"
Tom Peters, author of "The Li
t; (shorthand for newline - '15'x in
EBCDIC) to separate multiple CP commands.
Mark Wheeler
UnitedHealth Group
--
For LINUX-390 subscribe / signoff / archive access instructions,
At a technical level, in order to string the SMSG and LOGOFF commands together,
they need to be separated by '15'x instead of the pound sign (#).
Mark Wheeler
UnitedHealth Group
--
"Excellence. Always. If Not Excellence, What? If Not Excellence Now, When?"
Tom Peters, a
govern the log pool
size. If the sum of those is 10 GB, then maybe 12 GB for the total machine size
is "reasonable". As in, as reasonable as the 10 GB calculation.
As Jay's experience shows, you can get by with a lot less, but he's obviously
defined much smaller buffer poo
Wouldn't it be nice if the FORMAT and RESERVE commands had NOPROMPT options
that would allow you to avoid stacking responses? These are about the only
places I ever need to use the stack any more. anso (if you wanted)
> Date: Fri, 21 May 2010 11:22:22 -0400
> From: du...@us.ibm.com
> Subject:
t over the last year. I've never been prouder to be
part of the VM community.
Very best regards,
Mark Wheeler
UnitedHealth Group
_
Hotmail: Trusted email with Microsoft’s powe
RIP |',
'CHOP 8 |',
'SORT 1.8 |',
'SPECS /IND USER/ 1 1.8 NW |',
'CP |',
'F: FIND USERID=|',
'J: JUXTAPOSE |',
'SPECS 8.8 1 |',
'*:',
'?',
'F: |',
'FIND IPLSYS=DEV_02|&#
ary, tracing back to MEMO MOVING-ON on the old VMSHARE site (for
people old enough to remember that collaboration occurred amongst VMers long
before "the Internets").
Mark Wheeler
_
Hotmail® is up to 70% faster. Now
to manage other interfaces (Hipersockets, GLANs, CTCs),
I'd stick with static routes.
Best regards,
Mark Wheeler
> Date: Thu, 5 Mar 2009 15:09:18 -0800
> From: bsp...@visa.com
> Subject: VSWITCH and OSPF setup
> To: LINUX-390@VM.MARIST.EDU
>
> Hi All,
>
> Date: Wed, 4 Feb 2009 19:01:41 -0700> From: scott.rohl...@gmail.com> Subject:
> Re: Formatting 60 mod9s> To: LINUX-390@VM.MARIST.EDU> > Nice - how long are
> your restore times? I'm assuming better than a dasdfmt> takes per volume?
>From my z800 (IFL's are gone now), between 5 and 6 minutes
k address. The Linux guest can then link to its new
disk and put it to use.
In your example, where you've got 60 to "format", fire up a half-dozen CMS
worker machines and give each 10 disks to format in parallel.
The concept is pretty simple. I can share the REXX programs wit
> Gear, Steven wrote:> > Mark,> >> > What did they which to?> >> >> > and why?>
> > Cheers> John
Lack of executive sponsorship, and all that flows from that. Anyone who has
heard Nationwide's "From Woe to Whoa!" presentation, or Marcy Cortes' Wells
Fargo story recognize the pattern. They had t
all
those who have helped me personally with zLinux issues over the years.
I'll be dropping into lurk mode on this list for now, but hopefully you'll
continue to see me from time to time on VMESA-L, IBM-MAIN, and others.
Very best regards,
Mark Wheeler
IT Infrastructure, 3M Center B2
>
> Considerations:
>
> 1- if the begin of dcss is lower than the size of the virtual machine,
you
> must open "a hole" in machine's memory to imbed it.
> Like it: For a machine with 256M (140 + 116), use this command in
> Profile.EXEC: DEF STORE CONFIG 0.140M 160M.116M
>
I have a REXX exec that r
Ann,
Is the restriction on the IP addresses of the real interfaces? If so, maybe
you could define multiple interfaces (some for prod, some for DR),
activating the ones appropriate for the situation, but use VIPA to retain a
consistent IP address for your systems from a DNS point of view.
Best reg
Linux on 390 Port wrote on 05/30/2008 11:48:55
AM:
> On May 29, 2008, at 5:22 PM, Mark Wheeler wrote:
> > Leland Lucius' E2SH utility has saved my bacon more than once. From
> > CMS,
> > you can link to the root minidisk and issue all manner of shell
> > comm
Mike Walter wrote on 05/29/2008 04:50:26 PM:
> At one point one of our "zLinux" (marketing and politically incorrect)
> Proof of Concept servers suffered some form of filesystem corruption.
The
> fstab was severely wounded, requiring that it be manually rebuilt by
hand.
> During the rebuild perio
accurate
but only shows LPAR utilization, so the information is somewhat more than
useless, but not by much.
Mark Wheeler, 3M Company
--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTEC
>
> ... Create a tape with ICKDSF on it, bring down z/VM, IPL
> the tape ...
Better yet, place a copy of ICKSADSF MODULE on MAINT's CF1 disk, shutdown,
IPL the standalone program loader as you normally would, except launch
ICKSADSF instead of CPLOAD.
Mark L. Wheeler
IT Infrastructure, 3M Center
Eric,
I would recommend starting at http://linuxvm.org - a great home-base, so to
speak.. Then Redbooks...
Mark L. Wheeler
IT Infrastructure, 3M Center B224-4N-20, St Paul MN 55144
Tel: (651) 733-4355, Fax: (651) 736-7689
mlwheeler at mmm.com
"I have this theory that if one person can go out o
Linux on 390 Port wrote on 10/12/2007 10:31:01
AM:
> On 10/12/07, Mark Wheeler <[EMAIL PROTECTED]> wrote:
>
> > The predomininant recommendations I've seen say allocate two VDISK swap
> > areas, one with a "best guess" size, and a 2nd lower-priority, large
> Rob van der Heij said:
> Right. So you make an educated guess for what you think you need, and
> define an additional large VDISK as the next level of swap. You use
> the performance monitor to alert you when that next level of swap gets
> used (which means you overflowed the first one, so th
V, I could add a third TSM server, but I'd have to add a third
FCP CHPid also.
Mark Wheeler, 3M Company
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For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: I
Alan, et al,
Could this be used for high-availability clustering and/or load balancing?
It would be nice to use our ISFC (Distributed IUCV) CTC infrastructure to
carry the heartbeat monitoring traffic etc. Potentially much simpler than
defining CTC links between a bunch of penguins.
Mark L. Wheel
The advantage of using VM is that you can overcommit resources.
The disadvantage of using VM is that you can overcommit resources.
The trick is to find a balance between these two, and building enough
resiliency into your configuration to handle the occasional bumps in the
road.
Mark L. Wheeler
4C00 ATTACHED TO SERVERB 0C90 CHPID D0
FCP 4C02 ATTACHED TO SERVERB 0C92 CHPID D0
FCP 4C04 ATTACHED TO SERVERB 0C94 CHPID D0
FCP 4D01 ATTACHED TO SERVERB 0C91 CHPID D1
FCP 4D03 ATTACHED TO SERVERB 0C93 CHPID D1
FCP 4D05 ATTACHED TO SERVERB 0C95 CHPID D1
Ready; T=0.01/0.01 15:53:10
Mark Wheele
-J
barton wrote:
> I've seen this a lot. You need to find the real bottleneck. Are
> you equiped?
>
>
>
> Mark Wheeler wrote:
>
>> More info:
>>
>> FTP GET's of this cached 256MB file to /dev/null have run as fast as 205
>> MB/sec w/ M
y hipersocket links so as to be consistent with the 32760
> MTU size used on CTC links to other processors owned by my z/VM TCPIP
> machine, which is used as the gateway between Linux guests on one machine
> and z/OS on the other machines.
>
> Best regards,
> Mark Wheele
inks to other processors owned by my z/VM TCPIP
> machine, which is used as the gateway between Linux guests on one machine
> and z/OS on the other machines.
>
> Best regards,
> Mark Wheeler, 3M Company
>
> --
oBytes!)
Has anyone else seen this?
I use 32760 on my hipersocket links so as to be consistent with the 32760
MTU size used on CTC links to other processors owned by my z/VM TCPIP
machine, which is used as the gateway between Linux guests on one machine
and z/OS on the other machines.
Best regards
son I ask is that we're running overcommited here and our head z/VM
person had me stop using vdisk a long time ago because he was worried about
our memory allocation. 6 gig real 1 gig expanded here, and we're using a
goodly amount of it.
-J
Mark Wheeler <[EMAIL PROTECTED]
Ray,
I defined eight vdisks as swap (the max that Linux can use, so I only have
to mess with fstab once), each double the other, with descending priority
so the smallest gets used first. When I see swap space starting to spill
into some of the larger vdisks, I may increase the virtual machine size
C
> pairs, each coupled to one other guest, and for each connected guest,
> have that guest use the CTC serial device as its console.
>
> Adam
>
Would IUCV work for this? A lot easier to configure than vCTCs.
Mark Wheeler, 3M Company
--
for the 4d30 path looks like:
0x4d30 0x01:0x500104f0006fd1af 0x00:0x
These devices will eventually be used by TSM, so that adds another wrinkle.
Mark Wheeler, 3M Company
--
For LINUX-390 subscribe / signoff / a
Mike,
The last few lines in my SLES9 version of /etc/modprobe.conf say:
# end of s390 part for modprobe.conf
# please keep this at the end and add local modifications to
modules.conf.local
include /etc/modprobe.conf.local
Consequently, that's where I put mine. :-)
Best regards,
s anyone seen this problem? Has it been fixed? I've been running my
hipersocket (and CTC) interfaces with MTU=32760. Should I start
reconfiguring them all back to 8K? (8184?)
Most of our servers are SLES8, just starting to roll out SLES9.
Mark W
paging, and so far page space hasn't
been an issue.
Mark Wheeler, 3M Company
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send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit
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We have about 40 RHEL3 boxes and 10 SLES8 boxes running on two IFLs (one on
a z900, the other a z990). We have a half-dozen or so test boxes (mostly
RHEL3) on a 9672-RB6. DB2connect, Samba, Apache, reverse proxy, Websphere
development, other...
Mark Wheeler, 3M Company
me_type", but
/sbin/ifup needs a lot more done to it than just that. I've been hacking
and chopping away but making very slow "progress". Boy, do I miss REXX
tracing!!!
Thanks!
Mark Wheeler, 3M Company
--
4/2004 03:28
PM
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
On Tuesday, 12/14/2004 at 02:53 CST, Mark Wheeler <[EMAIL PROTECTED]>
wrote:
> What fun!
My network troubleshooter's check
aces not coming up by themselves at
re-boot, so am keeping an eye on Martha's recent thread on this topic.
Best regards,
Mark Wheeler, 3M Company
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For LINUX-390 subscribe / signoff / archive access instructions,
configure
the Linux boxes (/etc/chandev.conf can be the same on all).
On the z/OS LPARs that share the hipersocket, we use 8600-8602 on all (can
use same addresses on different LPARs).
Best regards,
Mark Wheeler, 3M Company
"Seader, Cameron"
<[EM
port, of course).
This seems to be extraordinarily odd behaviour at the physical layer,
occurring whether we have the OSA attached to the VSWITCH or anything else.
Has anyone seen this before? If not, we've got some serious detective work
to do.
Best
066 | 4066 | eth1
eth1.4067 | 4067 | eth1
Suggestions will be most appreciated!
Mark Wheeler, 3M Company
--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] w
Linux IUCV driver support Distributed IUCV connections in
general?
3) Does the Linux IUCV driver support Distributed IUCV connections when
running in TOLERATE mode, which I understand requires that the application
specify the system that it wants to talk to? If yes, how would that be
coded?
TIA!
Perhaps a picture would help...
| 2216 | | 2216 | | | OSA/E | OSA/E | |
| - |
| | | | ||
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