We did not get an MIH message either.  IBM identified it from the
SNAPDUMP we did for the LOGOFF/FORCE PENDING.  Apparently OSAs are not
supposed to have MIH problems, but...

-----Original Message-----
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Schuh, Richard
Sent: Thursday, February 28, 2008 3:06 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: VSWITCH/OSA Problem


That looks to be a potential problem. I cannot directly tie my problem
to it. We had no MIH message and no users are/were in LOGOFF/FORCE
PENDING. However, it may be that ours is the same problem, but with
different symptoms. 

Thanks, 
Richard Schuh 

 

> -----Original Message-----
> From: The IBM z/VM Operating System
> [mailto:[EMAIL PROTECTED] On Behalf Of Stracka, James (GTI)
> Sent: Thursday, February 28, 2008 11:49 AM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Re: VSWITCH/OSA Problem
> 
> We took an MIH hit on an OSA.  IBM is developing APAR #
> VM64398.  You might consider doing an AST on it as it also 
> was responsible for a LOGOFF/FORCE pending condition.
> 
> -----Original Message-----
> From: The IBM z/VM Operating System
> [mailto:[EMAIL PROTECTED] On Behalf Of Schuh, Richard
> Sent: Thursday, February 28, 2008 2:41 PM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Re: VSWITCH/OSA Problem
> 
> 
> Nobody logs on to the controller, so it was likely not a
> MORE/HOLDING event. It was early in our day (the 16:xx:xx 
> time is GMT), so we were not at a peak. The controllers have 
> a REL 3000 share with QUICKDSP on.
> We rarely hit over 50% cpu utilization on the system, so 
> their being starved of cpu is not the answer. The controllers 
> show numbers like
> this: "CPU 00: Ctime=4 01:44:28  Vtime=0 00:00:01  Ttime=0 
> 00:00:41" in response to IND USER uid EXP, so they obviously 
> do not consume cpu. We are not memory constrained. We seldom 
> see any paging. 
> 
> I guess that the cause will remain a mystery. Maybe I should
> blame it on the OSA card :-) We are still using DTCVSW2 with 
> F00 as the backup device, so it remains an unknown.
> 
> Regards,
> Richard Schuh
> 
>  
> 
> > -----Original Message-----
> > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED]

> > On Behalf Of Alan Altmark
> > Sent: Thursday, February 28, 2008 11:21 AM
> > To: IBMVM@LISTSERV.UARK.EDU
> > Subject: Re: VSWITCH/OSA Problem
> > 
> > On Tuesday, 02/26/2008 at 06:12 EST, "Schuh, Richard" 
> > <[EMAIL PROTECTED]>
> > wrote:
> > 
> > > 16:12:32 HCPSWU2843E A stall was detected for TCP/IP
> > Controller DTCVSW1.
> > > HCPSWU2843E It was managing device 0F00 for VSWITCH
> SYSTEM VM3SW1.
> > > 16:12:32 HCPSWU2830I VSWITCH SYSTEM VM3SW1 status is in
> > error recovery.
> > > HCPSWU2830I DTCVSW2 is new VSWITCH controller.
> > > 16:12:33 HCPSWU2831E CP Controller error 5 for DTCVSW1. 16:12:33
> > > HCPSWU2830I VSWITCH SYSTEM VM3SW1 status is ready. HCPSWU2830I
> > > DTCVSW2 is VSWITCH controller.
> > > 
> > > There was a daylong stream of DTCOSD246I and DTCOSD247I
> > messages. The
> > > only other messages from the controller were:
> > > 
> > > OSA 0F00 DETACHED DTCVSW1 0F00 BY DTCVSW1 OSA 0F01
> DETACHED DTCVSW1
> > > 0F01 BY DTCVSW1 OSA 0F02 DETACHED DTCVSW1 0F02 BY DTCVSW1
> > 
> > For whatever reason, CP was unhappy with the controller. Perhaps 
> > your system is loaded down and the controller is
> being starved
> > of resources or something is driving it crazy with NETSTATs
> or it is
> > sitting in MORE/HOLDING or CP READ?
> > The book says to ignore "error 5" (so why display it?).
> > 
> > Alan Altmark
> > z/VM Development
> > IBM Endicott
> >
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