[Dovecot] two dovecot server using the same file system

[Peter Fern]

Steffen Kaiser wrote:
> Just use a filesystem that allows to be accessed multiple times
> natively. Unfortunately, DRDB.org does not mention a filesystem to
> overcome the restriction.
>

OCFS2 or GFS(2) are the usual suspects... be prepared for the
performance hit and fun with fences/quorum though, particularly with
only two nodes