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If you've got level 9 images mixed on with your other
levels (unlikely unless you change image expirations manually), you could
reimport the contents of the tape to "discover" what's on the tape and recreate
the image-database entries. If all images on the tape expire, though, and
it's gone back to the scratch pool and has been rewritten, this isn't
possible. If the entire tape is full of expired images but has been
on the shelf and could not have been overwritten, then importing it is also
possible.
So - images on tape, not in image database because they're
expired: if the tape has not been overwritten, you can import the tape and
recreate the image db info. If the tape has been overwritten, you're just
SOL, I'm afraid.
Ed's comment about backups not being archives is because
"archive" has a very specific meaning within NB, different than the common
usage. What you have are probably "long-term backups".
-M
On Tue, Apr 1, 2008 at 4:34 AM, DaveJen <netbackup-forum AT backupcentral DOT com>
wrote:
We
are currently running Veritas NetBackup 6.0 (with no maintenance packs) on one
Master/Media/EMM server for our one-site-office. Recently we have been
experiencing issues restoring from several Ad-Hoc backups. The Ad-Hoc policy
details are:
6.0 with no maintenance packs is suicide. I very strongly suggest
you upgrade. Your backups are at risk.
Type:
Full Backup
Retention: Infinity (Level 9)
Backups are not archives. But if you
insist...
We
use this for archiving information as and when we need to perform an archive.
However, when we goto the restore utility some of the backup jobs are in the
NetBackup History but others are not. Previously we used the retention "1
year" (Level 8) so some of the older backup tapes (including the tapes we are
attempting to restore from) have this retention. Could this be an
issue?
Absolutely. If the image is written with a 1 year retention, then
when the image expires, its contents in the catalog are erased. If all the
images on a tape have expired, then the tape is put back in the scratch
pool.
If
so, how do we change the retention level of a tape? We have tried changing the
retention of the policy back to Level 8 to no avail.
You change the expiration of the image, not the tape. Use
bpexpdate to do this.
If you want until the image expires, it
could be too late - the tape could already be overwritten. You *must*
change the expiration *before* the image expires. Once the image has been
written, the policy is no longer relevant - you can delete the policy and the
data will still be there until the image expires.
--
Ed Wilts, Mounds
View, MN, USA
mailto:ewilts AT ewilts DOT org
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