Re: [Bacula-users] VirtualFull using tape drives
2011-01-07 19:31:21
Citando Jim Barber <jim.barber AT ddihealth DOT com>:
> Yes I am.
> I am using a TL2000 tape library with two drives.
> The technique can't work if you only have one tape drive.
> I'm taking incremental backups Mon-Fri.
> Then after the incremental backups are finished on Friday I
> consolidate them into a VirtualFull backup.
> For a VirtualFull backup to work it takes the previous full
> backup and the incremental backups since, and combines them to
> produce new tape(s) that will be promoted to being the latest
> full backups.
> The first incremental backups ever run for a host will auto
> upgrade to a full backup so you're covered for that.
> The process seems to work well for me, after I worked around a
> minor problem.
> After the incremental backup is complete, tapes are left in the
> drives.
> If tape X is in drive 1 after the incremental backups are
> complete and the VirtualFull wishes to load it it into drive 0
> to read from; then Bacula can't eject the tape from drive 1 and
> then load it into drive 0 and deadlocks for user intervention.
> User intervention doesn't help either as the tape you want to
> eject is locked by Bacula, so you end up stopping daemons and
> interrupting the backup.
> The solution is to use an administrative job that is scheduled
> to eject all tapes from the drives after the incremental backups
> are done, and before the VirtualFull backup starts.
> Perhaps I should have just raised a bug on that...
> .
> .
> .
> .
>
> ----------Jim Barbe
i raised this issue in the devel list a few month ago but nobody
seemed interested in solving this problem.
the subject of my message was: bug ? bacula asks for a volume that
is already mounterd
maybe you will be more lucky?
the idea of scheduling a low priority job to release the tapes is
bright but solving this bug would be preferable !!!
PS : Do you know if replacing full with virtualfull is possible for
standard disk based storage deamons ?
i taught that one can not read and write simultaneously from the same
SD. so you cannot create a virtuallfull from the previous virtualfull
+ incremental as the two virtualfulls are stored in the same pool of
the same sd
Penne
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