Re: [ADSM-L] ANR8503E after hours of backing up DB2

If you are seeing write errors but no write issues showing up on the DD, start 
looking at the network link between the TSM server and the DD appliance.

Dale Jolliff
Senior Practice Consultant
Support - Professional Services
Backup Recovery Systems Division
 
EMC Corporation
2421 Mission College Blvd.
Santa Clara, CA 95054
 
Business: (972) 765-4558 
Mobile: (972) 765-4558 
Dale.Jolliff AT emc DOT com 
www.EMC.com 



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-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Andrew Carlson
Sent: Wednesday, October 06, 2010 2:32 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] ANR8503E after hours of backing up DB2

Hi Folks.

I am running TSM 6.2.1.1 under AIX 6.1.5.  I am writing data to a Data
Domain DD880 using NFS.

We have a long running DB2 backup that backs up about 7TB.  By the
way, this is a fairly new setup.  Most things are fine, but sometimes
I get:

DATE_TIME: 2010-10-06 11:32:11.000000
  MESSAGE: ANR8503E A failure occurred in writing to volume
/tsmstg/cabdd01/tsmcabu/stgfile/dir2/000002CF.BFS. (SESSION: 163)

DATE_TIME: 2010-10-06 11:32:11.000000
  MESSAGE: ANR1411W Access mode for volume
/tsmstg/cabdd01/tsmcabu/stgfile/dir2/000002CF.BFS now set to
"read-only" due to write error. (SESSION: 163)

DATE_TIME: 2010-10-06 11:32:12.000000
  MESSAGE: ANR0523W Transaction failed for session 163 for node
UPBCCLND02 (DB2/AIX64) - error on output storage device. (SESSION:
163)

So far, the Data Domain people say everything is fine, and I can't
find anything relevant in any logs.

#1) How would you guys debug this

#2) It seems to me that TSM should mount another volume if it gets a
write error.  Is there something I am missing to get it to do that?  I
hate dumping hours of backup that apparently DB2 uses 1 transaction
for.

Thanks for any information that you can provide.

--
Andy Carlson
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