[Veritas-bu] Media spanning job failures causing frozen media

Hey guys,

Wondering if anyone else has experienced this – i’m seeing it on 2 or 3 of my environments...

When a backup spans media (and is the sole backup running to that media – i see this for NDMP jobs, and for some of my larger DB and Exchange clusters), but then fails on 2^nd/3^rd media... Netbackup marks the first tape as available again. Fair enough. But NB also ‘forgets’ that that tape is currently sitting on the end of tape marker. When it subsequently loads it for re-use, the tape reports a write error (because NB doesn’t rewind it), and gets frozen.

I’ve included some truncated activity monitor logs below, to illustrate this in further detail, but just wanted to gauge if other people have experienced this, and whether theres some sort of work around short of “make sure you’ve got enough tapes available”.

Job details below:

Job 1:

11/10/2010 16:30:00 - requesting resource X, Y, Z

11/10/2010 22:11:11 - granted resource J4MO03

11/10/2010 22:11:11 - granted resource the rest of them

11/10/2010 22:11:52 - positioning J4MO03 to file 1

11/10/2010 22:12:01 - positioned J4MO03; position time: 00:00:09

11/10/2010 22:12:01 - begin writing

12/10/2010 03:55:00 - current media J4MO03 complete, requesting next resource Any

12/10/2010 03:55:01 - granted resource J4MO04

12/10/2010 03:55:02 - mounting J4MO04

12/10/2010 03:55:35 - mounted; mount time: 00:00:33

12/10/2010 03:55:40 - positioning J4MO04 to file 2

12/10/2010 03:57:02 - positioned J4MO04; position time: 00:01:22

12/10/2010 03:57:02 - begin writing

12/10/2010 07:05:35 - current media J4MO04 complete, requesting next resource Any

12/10/2010 07:06:33 - end writing; write time: 03:09:31

unable to allocate new media for backup, storage unit has none available(96)

Ran out of tapes... poor form, but fixable (we run a limited tape capacity per day, to allow for offsiting each day)

Job 2:

12/10/2010 08:00:00 - requesting resource X, Y, Z

12/10/2010 08:02:51 - granted resource J4MO03

12/10/2010 08:02:52 - mounting J4MO03

12/10/2010 08:03:25 - mounted; mount time: 00:00:33

12/10/2010 08:03:29 - positioning J4MO03 to file 2

12/10/2010 08:04:16 - Error bptm(pid=4708) ioctl (MTWEOF) failed on media id J4MO03, drive index 3, The physical end of the tape has been reached. (1100) (bptm.c.24228)

12/10/2010 08:04:16 - Error bptm(pid=4708) FROZE media id J4MO03, could not write tape mark to begin new image

Nic Solomons

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