Our servers are IBM Power P740 chassis all lpar'ed up.
Aix is at 6100-06.
TSM is v6.2.5.

Rick



-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Matthew McGeary
Sent: Wednesday, July 16, 2014 8:19 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM server appears to hang

We're having the exact same problem, have been for quite a few months now.
 It occurred on 6.3.4.100 and 7.1.  Running on AIX 6.1 TL7 SP6 hosted on a 
P740.  It gets so bad on ours that I'll have to halt the dsmserv process, 
perform a db2stop force and then restart TSM.  Because it happens at random 
times and is totally infrequent, I've written a quick and dirty script to make 
sure that TSM is running and to do the shutdown/restart if the non-responsive 
behaviour kicks in again.

I don't have a solution for you but we've been all the way up the developer 
chain without much success.  What hardware are you running your server on?

Matthew McGeary
Technical Specialist
PotashCorp - Saskatoon
306.933.8921



From:   "Rhodes, Richard L." <rrhodes AT FIRSTENERGYCORP DOT COM>
To:     ADSM-L AT VM.MARIST DOT EDU
Date:   07/16/2014 09:08 AM
Subject:        [ADSM-L] TSM server appears to hang
Sent by:        "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>



Hi Everyone,

The past couple of days we're had a strange problem with one of our TSM 
instances (v6.2.5).  At times it appears to hang.

Last night (and the previous night) it had many servers that got a dozen or 
more sessions.  This is really strange!  This morning as I was looking at this, 
cmds like "q vol" and "q stgpool" hang - no response!  Commands like "q node" 
and "q proc" work.  The server was doing very little I/O.
All of a sudden the hung cmds all ran through and the server I/O jumped to 
200-400MB/s.  Something was locking I/O.  I think the many sessions are clients 
that retry because the server is not responding.

In the TSM actlog there are no unusual messages about the time it un-stuck.  
The only strange entry in the actlog is a ANR9999D with
lockwait error early the previous evening.    There are no AIX errors.

Any thought?

Rick






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