On 3 sep 2010, at 15:23, Dury, John C. wrote:

> We have an AIX server running TSM server v5.5.4.0 that is attached to two 
> tape libraries, one remote and one local. The tape libraries are both STK 
> SL500 libraries with 4 LTO4 drives in each. The remote library is configured 
> as a copy storage pool. Several times through the day, we run "backup 
> stgpool" to backup the local tape library to the remote tape library to try 
> and keep them in sync using 3 processes. Two of the processes run to 
> completion but the 3rd process seems to hang. It only backs up 1 file from 
> library to library and then never progresses any further, even after many 
> many hours. Because it seems to hang, it ends up pinning the recovery log 
> which just keeps filling up until I end up cancelling the "backup stg" 
> process which unpins the recovery log.  I've checked and it doesn't seem to 
> be the same tapes each time. Unfortunately this seems to happen several 
> times, and often in the middle of the night.
> Is there any way to diagnose why the backup storage pool process is 
> stopping/hanging at 1 file? I don't see any errors anywhere, either in the 
> activity log or in the tape library. If it at all possible,is there a way to 
> find the one file that seemingly takes forever to complete. This has been 
> going on for quite awhile now and pinning the recovery log lead to quite a 
> few other problems (as I'm sure you all know).
> Thanks,
> John



is that 3rd process maybe working on a huge file? TSM doesn't update the status 
of a process until a whole file has been copied. Or, is it maybe waiting for 
access to a tape that another process is using?

-- 
Met vriendelijke groeten/Kind Regards,

Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622