GlusterFs always strikes me as being "the solution" (one day...). It's had a lot of growing pains, but there have been a few on the list had success using it already. Given some time has gone by since I last asked - has anyone got any more recent experience with it and how has it worked out with particular emphasis on Dovecot maildir storage? How has version 3 worked out for you? Anyone had success using some other clustered/HA filestore with dovecot who can share their experience? (OCFS/GFS over DRBD, etc?) My interest is more in bootstrapping a more highly available system from lower quality (commodity) components than very high end use Thanks Ed W
> > Anyone had success using some other clustered/HA filestore with dovecot who > can share their experience? (OCFS/GFS over DRBD, etc?) > > My interest is more in bootstrapping a more highly available system from > lower quality (commodity) components than very high end usewe use drbd with ext3 in a active/passive setup for more than 10000 mailboxes. works like a charm! I'm not really trusting cluster filesystems and most cluster filesystems are not made for small files. Alex
Quoting Ed W <lists at wildgooses.com>:> Anyone had success using some other clustered/HA filestore with > dovecot who can share their experience? (OCFS/GFS over DRBD, etc?)GFS2 over DRBD in an active-active setup works fine IMHO. Not perfect, but it was cheap and works well... Let's me reboot machines with "no downtime" which was one of my main goals when implementing it...> My interest is more in bootstrapping a more highly available system > from lower quality (commodity) components than very high end useGFS+DRBD should fit the bill... You need several nics and cables, but they are dirt cheap... Just 2 machines with the same disk setup, and a handful of nics and cables, and you are off and running...> Thanks > > Ed W-- Eric Rostetter The Department of Physics The University of Texas at Austin Go Longhorns!
On 2010-02-17, Ed W <lists at wildgooses.com> wrote:> > Anyone had success using some other clustered/HA filestore with dovecot > who can share their experience? (OCFS/GFS over DRBD, etc?)We?ve been using IBM?s GPFS filesystem on (currently) seven x-series servers running RHEL4 and RHEL5, all SAN-attached all serving the same filesystem for probably 4 years now. This systems serves POP/IMAP/Webmail to ~700.000 mail accounts. Webmail is sticky, while POP/IMAP is being distributed over all the servers by HAproxy. It?s been working very well. There?s been some minor issues with dovecots locking that forced us to be less parallell in the deliveries than we wanted to, but that?s probably our own fault for being quite back-level on dovecot. The biggest pain is doing file backups of the maildirs... -jf