[Veritas-bu] Disk-Based backups having empty final fragments
2006-06-22 02:21:03
Subject: |
[Veritas-bu] Disk-Based backups having empty final fragments |
From: |
bob944 at attglobal.net (bob944) |
Date: |
Thu, 22 Jun 2006 02:21:03 -0400 |
> I'm running disk-storage-unit backups (not the disk-staging
> storage units) on a NB5.1MP3 Solaris 9 server. I've
> configured my storage units for a 2000MB fragment size.
>
> Occasionally, I run into backup images which exactly fill the
> fragments exactly and bpimagelist shows a final zero-sized
> fragment which doesn't exist on the storage unit. I haven't
> been able to duplicate these backups to tape. I've tried
> touching a file having the same name as the final fragment,
> but without success. I've ultimately had to expire the backup.
>
> Does anybody have a workaround for this? It seems like this
> is a potential problem regardless of the storage unit's
> fragment-size configuration.
Sounds like the bug mentioned here a few postings ago:
> > Also, what if the fragment size is 32GB and the backup is
> > exactly 32GB? Are two fragments written or one?
>
> Yes. :-) See technote 280018 for a pre-5.1MP5 or pre-6.0MP2 bug
> related to this.
So, check out http://seer.support.veritas.com/docs/280018.htm
NetBackup 6 has a default disk STU frag size of 0.5TB (see the SAG), so
a larger frag size, up to your OS's file-size limit, is also an option.
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