looks as a hardware error

regards



2014-07-17 11:04 GMT-05:00 Rhodes, Richard L. <rrhodes AT firstenergycorp DOT 
com>:

> 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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