2010/2/24 Eero Volotinen eero.volotinen@iki.fi
2010/2/24 Agnello George agnello.dsouza@gmail.com:
On Wed, Feb 24, 2010 at 3:08 PM, David Hrbáč hrbac.conf@seznam.cz
wrote:
Dne 24.2.2010 10:00, Agnello George napsal(a):
Hi
We have an issue with one of our clients , they have a mail server
with
the /var/spool/imap partition as 150 GB . They need to take differential backup on to /backup partition ( a different HDD of total 250 GB
space
) . We have tried dar , rsync, rdiff and impasync . But its is not
sufficing
the need as to take a lot of time and consumes a lot of I/O .
Is there any back up solution that you can think of , that can work in this situation - open source or proprietary
Is seems to me, that you are using mbox format. So, differential backup is hard to achieve. Migrate to maildir, every mail is a file, easy to backup differentially. David
backup directory structure is /var/spool/imap/a /adomain.com/a/agnello^dsouza/
Well, does that directory contains one file or lot of files ?
Usually maildir structure is like dir++/tmp/current/new directories and each message is in own file on mailbox all files are inside one file.
its in a maildir format and the structure slightly different from what i
mentioned earlier : root@server1 ~]# ls -la /var/spool/imap/a/user/ajay/ total 5180 -rw------- 1 cyrus mail 34616 Feb 24 16:02 4790. -rw------- 1 cyrus mail 4490 Feb 24 16:03 4791. -rw------- 1 cyrus mail 199253 Feb 24 16:07 4792. -rw------- 1 cyrus mail 22930 Feb 24 16:09 4793. -rw------- 1 cyrus mail 8485 Feb 24 16:11 4794. -rw------- 1 cyrus mail 12664 Feb 24 16:13 4795. -rw------- 1 cyrus mail 4296 Feb 24 16:13 4796. -rw------- 1 cyrus mail 5337 Feb 24 16:15 4797. -rw------- 1 cyrus mail 111030 Feb 24 16:21 4798. -rw------- 1 cyrus mail 4805500 Feb 24 16:23 4799. -rw------- 1 cyrus mail 22920 Feb 24 16:23 cyrus.cache -rw------- 1 cyrus mail 204 Dec 10 16:27 cyrus.header -rw------- 1 cyrus mail 896 Feb 24 16:23 cyrus.index -rw------- 1 cyrus mail 8669 Feb 24 11:28 cyrus.squat
this is Just a very small user and a example