I'm trying to back up a relatively large filesystem (over 500G in use)
that is running somewhat slow. With my previous backup software, I
divided it up into multiple parallel backup jobs, and that worked. I'm
trying to implement something similar with Bacula 5.2 on RHEL 6 (backing
up to separate disk array).
The particular filesystem is ext3 on LVM on a SAN, and I have a script
that:
- logs into the server
- snapshots the LVM
- logs into the SAN
- snapshots the volume
- deletes the LVM snapshot on the server
- mounts the LVM-snapshot-on-SAN-snapshot on the backup server
There's also a post-backup script to unmount the snapshot and delete it
from the SAN.
I could split up the job with two filesets, with an include/exclude set
up to split (for example, back up directories a-m in one job and n-z in
the other). However, how can I get the snapshot scripts run just once,
before both jobs start and after both jobs finish?
I was looking at having a "parent" job that uses RunScripts to run the
snapshot script, run the two jobs, wait, and then run the snap-del
script, but it looks like "run" isn't an allowed console command.
I have a similar issue with a Windows server, where I've split a backup
into two jobs to run in parallel. The problem there is that they both
show as "running", but only one actually runs at a time (the other just
seems to sit there waiting, per "status client=foo" and "status
storage=bar" in bconsole). Is this due to VSS? Is there something
locking and only allowing one access at a time? I have raised Maximum
Concurrent Jobs, so that isn't the problem.
--
Chris Adams <cmadams AT hiwaay DOT net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
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