Bacula-users

Re: [Bacula-users] Disk-to-disk backups and the scratch pool

2009-04-13 13:29:26
Subject: Re: [Bacula-users] Disk-to-disk backups and the scratch pool
From: John Drescher <drescherjm AT gmail DOT com>
To: James Chamberlain <jamesc AT exa DOT com>
Date: Mon, 13 Apr 2009 13:24:48 -0400
> I'm having trouble with scratch pools.  I have a three main backup
> pools configured in Bacula (Desktops, Infrastructure, Servers).  Each
> corresponds to a separate RAID device (disk0, disk1, disk2), for disk-
> to-disk backups.  I have added a fourth RAID device (disk3) which I
> want to act as a scratch pool to catch overflow if any of the three
> main pools fill up, but it doesn't seem to be working.  The volumes
> appear to be there, but Bacula won't use them.
>
> The only theories I've been able to come up with as to why is that the
> volumes in the Scratch pool have a different media type (Disk3) than
> that of the other pools (Disk0, Disk1, and Disk2, respectively), and
> that Bacula can't literally move the volume Disk3-0001 to the disk0
> device (it being full and all)

Bacula will make different media types incompatible. Also it will
never move a job from one storage device to a different one. So if a
job starts on drive0 it must end on drive0.

>  Assuming either of these theories is
> correct, is there any easy way to fake Bacula out and get it to Do
> What I Want(tm)?  If the theories aren't correct, does anyone have a
> better idea what's going on, or is there more information I can
> provide that would help?  I'm using bacula-mysql-2.4.3-1.
>

You probably want to experiment with the virtual disk changer script
and use smaller volumes.

John

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