Re: [Veritas-bu] ZFS Filesystem Backups - Tips and tricks
2008-08-01 10:06:41
This is fixed in 6.5.2, but the other known problems in that release may
prevent you from wanting to upgrade. I've tested it and it works. From
the release notes:
Etrack Incident = ET1167175
Associated Primary Etrack = ET1165582
Titan cases: 240-665-067 281-261-075 290-875-726
Description:
A Zeta file system (ZFS) filesystem is not backed up when the
ALL_LOCAL_DRIVES directive is used.
Bryan
Mark Glazerman wrote:
>
> Incase anyone is considering implementing any ZFS in their environment
> which they want to back up using NetBackup we found out yesterday that
> ALL_LOCAL_DRIVES as the backup selection does NOT cover ZFS filesystems.
>
> We have a number of Sun boxes which have various test and development
> oracle instances which are housed inside ZFS file systems. We blew
> away one of these test instances the other day (after doing a full OS
> backup and the required RMAN backups) but when we went to restore the
> data from the ZFS filesystems, NBU didn’t have anything under the
> uppermost directory. A quick check of other systems with ZFS showed
> the same issue.We spent the better part of 2 days playing around with
> the include_list’s and exclude_list’s but nothing worked.
>
> In order to backup ZFS file systems you must explicitly add the ZFS
> directories into the backup selections of the backup policy. This
> “fix” was also confirmed by Symantec support who were also happy to
> tell me that ZFS isn’t officially supported by NBU yet.
>
> This on its own should work great if you have a single policy backing
> up a single server with all it’s ZFS under the same parent directory.
> However, if like us, you have a backup policy which backs up multiple
> servers, each with their own uniquely named ZFS file systems, you need
> to get a bit creative.
>
> The policy in question backs up 15 Sun boxes with a total of 6
> differently named ZFS file systems spread amongst them. If you just
> list the file systems in the backup selections, NBU looks for each of
> those different filesystems on each server and spits out an error code
> 71 (None of the files in the file list exist) for every directory it
> can’t find. The only way we could work out to avoid these errors (and
> there were a lot of them) was to create every missing directory on
> every server and then touch a tiny file inside each of these
> directories. Now when the policy runs, it sees each directory (as
> listed in the backup selection) on each server and doesn’t moan about
> anything. Perhaps not the neatest of fixes but it works.
>
> Apologies for the wordy post, just thought I’d put this info out there
> in case anyone else is moving towards ZFS.
>
> *Mark Glazerman*
>
> *Enterprise Storage Administrator*
>
> *Spartech Corporation*
>
> Desk: 314-889-8282
>
> Fax: 314-854-8282
>
> Cell: 618-520-3401
>
> *mark.glazerman AT spartech DOT com* <mailto:mark.glazerman AT spartech DOT
> com>
>
> *http://www.spartech.com* <http://www.spartech.com/>
>
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