Hello,
Jeff Ramen wrote:
Hello,
I have a backup server, which acts as a repository for network
backups. Attached to this server
is a HP Ultrium-1 LTO drive and an Exabyte VXA2 Autoloader drive. What
I am trying to do is
have Monthly full backups go to the LTO drive, and the daily incremental
backups go to the Exabyte.
Quite reasonable. Very clever. Best backup scheme in the world. I do the
same ;-)
Weekly differential backups will go to the Exabyte initially, but I may
decide later to send these to the
LTO.
I would like to split the backups this way so I have minimal tape
changes, and the LTO tapes can
go into our safe when they fill up, for long term archival.
I am having trouble getting this to work in bacula:
I created two pools, one for full backups and one for incremental
and differential. Only media for the LTO is added to the full backup
pool, as only media from the exabyte is added to the incremental pool.
One problem that I have is that a backup will get upgraded from
incremental to full (due to changes in my retention periods after
testing), and bacula wants to use media from the incremental pool AND
the LTO tape.
I do not know why it will not use the other media pool...
Well, that's a design flaw. I do assume that the upcoming stable version
will prevent this behaviour, at least that's how I understand the way
the storage selection will work, and if it doesn't automatically,
hopefully triggered user scripts can influence the storage / pool
request. Anyway, I know of no way around this with the stable version.
Whenever this situation comes up here, I simply start a full job
manually - then you can override the settings just like in the schedule
resources. And, since this doesn't happen very often - typically after a
fileset change or a client added - it's not really a problem. The
filesets are quite stable by now, and during development I used Ignore
Fileset Changes. Clients are added manually to the configuration, so I'm
working on the console anyway. And typing something like "run
job=new-client storage=DLT pool=Full level=Full" ist not too much work :-)
Maybe someone can offer me some suggestions to achieve by design goal,
ideally I would have minimal intervention with the backup system,
archiving the LTO tapes as neccessary and letting the VXA tapes recycle...
Now, I'm not a developer, but from reading the devel-list I understand
that version 1.38 will be ready in the next few months, and possibly
better support your scenario. If you want to make sure you (and I, of
course) didn't miss something, report this as a feature request in
bugs.bacula.org... I never bothered.
Arno
Thanks
Jeff Ramen
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Arno Lehmann http://www.its-lehmann.de
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