AIT-1 also had a Firmware upgrade to fix unmount issues. Tapes were not
being unmounted. Only a manual reset of the drive could get the tape out.
Skip
-----Original Message-----
From: Blake, Delroy [mailto:delroy.blake AT gs DOT com]
Sent: Wednesday, January 31, 2001 7:00 PM
To: 'Bob Bakh'; TWGIBBAR AT up DOT com; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Tapes not unmounting after completion of
backups
I would have your firmware code checked on the drives. AIT-2 did have a
problem on early firmware where they did not respond intermittently to host
unmount request later versions of firmware cleared this problem.
Delroy Blake
Goldman Sachs
Storage Capacity Management
180 Maiden LN
New York NY 10038
Tel: 212 902 6657
Fax 917 343-0811
All disk drives are rated in MTBF
That's mean time between failures.
The question is not if your disk will crash but when.
Got BACKUP?
-----Original Message-----
From: Bob Bakh [mailto:bbakh AT veritas DOT com]
Sent: Wednesday, January 31, 2001 12:32 PM
To: TWGIBBAR AT up DOT com; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Tapes not unmounting after completion of
backups
Is it a different media server requesting the tape or the same media server.
If it is a different media server then you need to contact support because
your volDB in /usr/openv/volmgr/database is on both media servers and makes
this a dangerous situation where your data tapes can be written over.
If it is the same media server, again problems will arise because tapes are
getting mounted on different drives than expected, like NetBackup Drive1 is
configured as robot Drive 1 and is /dev/rmt/1cbn but in truth Robot Drive 1
is really /dev/rmt/3cbn and NetBackup Drive3 so things are bad.
You may want to use robtest and mount the drives one at a time and monitor
the drive monitor to make sure things are correct, a boot -r can cause this
if you have had some changes to your system lately.
Bob
-----Original Message-----
From: TWGIBBAR AT up DOT com [mailto:TWGIBBAR AT up DOT com]
Sent: Wednesday, January 31, 2001 5:51 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Tapes not unmounting after completion of backups
I have a situation where tapes are not un-mounting following a failure or
completion of a backup. Another backup will kick-off requesting the tape
that is still mounted and eventually time-out and fail. I have two
questions; 1) Is there a configuration parameter that can be set to force a
backup to look for another tape if it can't find the one it's looking for?
2) How can one remotely force the tapes to un-mount and be returned to
their proper slot? I have unsuccessfully attempted this feat with robtest.
Thanks,
Terry
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