On Sun, 2007-02-04 at 15:31 -0800, Tauren Mills wrote:
>
> Even though option #3 has some drawbacks, the likelihood of those
> drawbacks happening are slim, especially if I mirror my big backup
> drive. I'm leaning toward it at the moment unless someone can suggest
> a way to make a COPY of a volume from one device to another device,
> perhaps using bcopy or some other technique available to bacula.
>
FWIW: The next task on my plate for implementing our Bacula-base backup
solution is to set up an off-site storage process. I plan on using
bcopy for this, except that I will be writing to external USB drives
instead of tape. From what I've seen in playing with bcopy, it does not
store info about the copies in the MySQL database, but it does update
some of the metadata stored in the backup file. Since info about the
volume is not stored in the database (which would not be available
anyway in the building-burned-down scenario anyway), you will have to
use 'bscan' to let bacula know what is on the volume before you can
actually to the restore. However, it might be possible to avoid that by
also saving the catalog offsite as well.
As to identifying which backup disk files are full backups that need to
be bcopied, it would probably be possible to ask MySQL. But to make it
"easier" I've created a pool called 'Full' with a 'LabelFormat' of
'Full_'. I've set up my jobs to use this pool for any Full backup
("Full Backup Pool = Full" in the job definition). So any backup file
on disk with name of 'Full_*' and with a mod time more recent than the
last time the offsite copy job was run will be copied to the offsite
media.
/dwight
--
Dwight N. Tovey
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