Alan Brown wrote:
On Wed, 24 May 2006, D Canfield wrote:
I'm just curious how other users are backing up maildirs using
bacula. We're using cyrus as our mail server, so we've got about
162GB of data stored in 4.4 million files, or an average of 37K per
message. Most other products I've tried (both commercial and open
source) have not been too happy with this arrangement and end up
requiring vast amounts of disk space and overhead to index this kind
of mail spool.
I have similar numbers of similar sized files backed up as part of
astronomical data.
Backing up is easy. Restoratation takes a while because of index
generation, but the actual restore process is quick.
Does anyone know if bacula is any better with this? If not, I'm
thinking my best resort would be to have each user's mail spool
gzipped before backing it up
That wouldn't help much.
I think what Ryan is worried about is that Bacula's catalog DB's size is
going to grow very big because of all the small files for which
information has to be stored in it, day after day. (Incremental backup
would help a little bit here already)
Is it possible to mount a zip file in loopback? Like one can do with an
.iso file? Instead of an encrypted file system, does a compressed file
system exist? Then he could simply rsync the folders with this file
system mounted in loopback, unmount it and backup the files that sat
underneath it. It might make sense to do that user per user to make the
restore operation a little bit more practical.
Just brain storming...
Cheers,
Jo
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