On 25.01.2022 9:31, Lionel PLASSE wrote:
I’ve made a rotation system like this
With one Bacula storage “backup” corresponding one Bacula device
“Backup”<=> root directory /pool-bacula/ automounted by udev.
And 3 pool full, diff, incr attached to this device
I have 8 usb disk xfs formatted with a xfs label “Bacula” (better than
uuid to configure udev rules) so udev can mount it automatically when
plugged to the Debian system. I don't use Bacula for usb disk mounting
task
On each disk I label one volume:
3 for each 3 month full rotation volumes ,
Four for each 4 weeks diff rotation
one for the daily incremental auto purged each week
By configuring the good retention period between week days and month
and by adding the correct number on jobs volume on each one, you can
easily configure a schedule with 3 steps ,
one for full attached to full pool on each first Wednesday a month for
example,
one for diff attached to diff pool each week from 2nd Wednesday to 5th
Wednesday
and the third for incremental each day from Monday to Thursday.
By this schedule you can keep a great number of backups so each day
you can restore the previous until the Monday with incremental
backups, each week kept by the differental backups and the 3 full
montly too.
De : Radosław Korzeniewski <rados...@korzeniewski.net>
Envoyé : dimanche 23 janvier 2022 11:37
À : Peter Milesson <mi...@atmos.eu>
Cc : bacula-users@lists.sourceforge.net
Objet : Re: [Bacula-users] Virtual tapes or virtual disks
Hello,
pt., 21 sty 2022 o 14:22 Peter Milesson via Bacula-users
<mailto:bacula-users@lists.sourceforge.net> napisał(a):
If somebody has got experience with disk based, multi volume Bacula
backup, I would be grateful about some information (tips, what to
expect, pitfalls, etc.).
The best IMVHO (but not the only mine) is to configure one job = one
volume. You will get no real benefit to limit the size of a single volume.
In the single volume = single job configuration you can set up job
retention very easily as purging a volume will purge a single job only.
It is not required to "wait" a particular volume to fill up to start
retention. Purging a volume affects a single job only. And finally you
end up with a way less number of volumes then when limiting its size
to i.e. 10G.
best regards
--
Radosław Korzeniewski
mailto:rados...@korzeniewski.net
Hi Lionel,
thanks for the information. I've tried your way of doing backups after
throwing out the physical tape drive. It just wasn't workable. The first
thing is having office personnel properly managing the different USB
drives (same problem as with tapes). Second, backup to USB drives takes
forever, and there is not time enough for a full backup to complete
comes Monday morning, not to speak of the few times there were backup
glitches and the necessity to repeat the full backup. So the only
solution for me is backup to a huge fixed storage. Now I'm planning how
to implement volume management on this fixed storage.
Best regards,
Peter
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