[OpenAFS] Failover
Robert Banz
banz@umbc.edu
Thu, 29 Dec 2005 23:39:24 -0500
Stephan Wiesand wrote:
> On Wed, 28 Dec 2005, Derek Atkins wrote:
>
>> You don't want AFS for an imap or maildir backend. You should just
>
>
> Since it's void of any locks, what would be wrong with maildir in AFS?
There's a bunch of things wrong with stock maildir; I've done a lot of
work with it. Our site uses a "modified" version of the maildir
filestructure for mail storage, and it performs quite well over AFS --
we've got multiple distributed delivery systems, as well as multiple
loadbalanced imap/pop readers.
Here's a link to our c-client & procmail patches that we've been using:
http://www.nofocus.org/wordpress/maildir/
and
http://www.umbc.edu/oit/iss/syscore/wiki/Maildir_Mailbox_Format
It's not completely void of locks, though, but since AFS does implement
file-level locks, it works fine. (the lock has to do with being able to
guarantee uniqness of UIDs for messages -- but it's used very sparingly ;) )
-rob