2010/2/24 Eero Volotinen <eero.volotinen at iki.fi> > 2010/2/24 Agnello George <agnello.dsouza at gmail.com>: > > > > > > On Wed, Feb 24, 2010 at 3:08 PM, David Hrbáč <hrbac.conf at 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 at 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 -- Regards Agnello D'souza -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100224/2e86a159/attachment-0004.html>