[Dovecot] mail spool filesystem

Felipe Scarel fbscarel at gmail.com
Fri Aug 19 21:45:33 EEST 2011

I'm testing out ZFS-fuse on my new install (talked about it on the other
thread), no issues so far. The builtin deduplication and compression sure do
help a lot, roughly 30% less storage space required so far.

They don't advertise it as exactly "production" quality, but I'm willing to
try it out, we're doing regular backups. The mail system hasn't gone live
yet though, so I'm a bit uneasy on the performance side of things under
heavy load.

On Fri, Aug 19, 2011 at 14:49, Seth Mattinen <sethm at rollernet.us> wrote:

> On 8/17/11 7:42 AM, Adrian Ulrich wrote:
> >> I read that XFS is a good choice, but is not
> >> too reliable...
> >
> > Are you using Maildir or MBOX?
> >
> > In any case: XFS would be my last choice:
> >
> > XFS is nice if you are working with large files (> 2GB), but
> > for E-Mail i'd stick with ext3 (or maybe even reiser3)
> > as it works very well with small files.
> >
> I'd have to disagree. This is completely anecdotal, but I originally
> deployed ext3 on all of my mail servers (Dovecot maildir) and spools
> (Postfix) until they started exhibiting loading issues when busy.
> Reformatting into XFS resolved the problem with no other changes. I
> didn't have time to do any comparisons or gather statistics since it was
> an emergency situation and this was before ext4, but XFS has performed
> flawlessly for me.
> ~Seth

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