I see the exact same thing on our TSM servers.
After speaking to IBM they state that the hang is down to a component of
the database not being able to respond during what ever process is
running. During the start of a reclaim process the IO is heavy on the
database and the TSM instance queues mounts for the volumes that it
recognises are eligible for reclaim based on the percent that you have
assigned the storage pool. If this is a massive amount then, this could
take a while.
Does q mo hang as well? If it does not, then it suggests that the
problem lies in the disk storage. If it does then more likely to be
related to tape.
What library firmware and drivers are running the library?
Also check the following APAR:
C47930 TSM SERVER MAY HANG ALL OPERATIONS REQUIRING ACCESS TO A
SEQUENTIAL VOLUME AFTER RECLAMATION STARTS REPAIR STGVOL. IC47930 is
fixed in levels 5.3.2.3 (available now) and 5.3.3.
_____________________________
Ian Smith
SAN/TSM Specialist
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Orville Lantto
Sent: 28 February 2006 23:13
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Q STG hangs during reclamation
We are having problems on a TSM server instance on AIX. Some simple
commands such as "Q Stg" appear to hang, along with their sessions,
while reclamation is in process. Other commands like "Q Pr' do not
hang. The server is AIX 5.2.5 with six instances of TSM Server 5.3.2.0
on it. The disk is DS4300 with a 3584 tape library shared between the
instances.
Anyone have a guess as to why?
Orville L. Lantto
Glasshouse Technologies, Inc.
Cell: 952-738-1933
________________________________
From: ADSM: Dist Stor Manager on behalf of Prather, Wanda
Sent: Tue 2/28/2006 4:50 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] 3584 help
Having a problem with the Tape Library Specialist/web app, so I want to
know what level of microcode is on this 3584.
Can you get that information from the web app, or for that matter, from
the front LED panel of the 3584?
Thanks!
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