Quoting Jonathan Tripathy jonnyt@abpni.co.uk:
I'm hearing different things on whether dovecot works well or not with GFS2.
Dovecot works fine with GFS2. The question is performance of Dovecot on GFS2. I do dovecot on GFS2 (with mbox instead of maildir) and it works fine for my user load... Your userload may vary, and using maildir may make your results different than mine.
Of course, I could simply replace the iSCSI LUN above with an nfs
server running on each DRBD node, if you feel NFS would work better
than GFS2.
Either should work. I'd use GFS2 myself, unless you have some compelling reason not to...
Either way, I would probably use a crossover cable for the DRBD cluster.
I use 2 1Gb links bonded together, over crossover cables...
Could maybe even bond 2 cables together if I'm feeling adventurous!
Yes, recommended. That is what I do on all my clusters.
The way I see it, is that there are 2 issues to deal with:
- Which "Shared Disk" technology is best (GFS2 over LUN or a simple
NFS server) and- What is the best method of HA for the storage system
Any advice is appreciated.
Best is relative to workload, budget, expectations, environment, etc. And sometimes, it is just a "religious" thing. So I don't think you will get much of a consensus as to which is "best" since it really depends...
-- Eric Rostetter The Department of Physics The University of Texas at Austin
Go Longhorns!