On Apr 8, 2008, at 9:49 AM, Russ Allbery wrote:
"David Bear" <[EMAIL PROTECTED]> writes:
I seem to distantly recall some discussion about storing maildir
directories on openafs, but I don't remember if it was safe,
discouraged, or otherwise problematic. Any one see problems with
putting
maildir in afs?
The maildir protocol requires cross-directory hardlinks. In order
to use
it in AFS, you have to modify the protocol slightly in a way that may
undermine some of its reliability guarantees (although *probably* not
fatally).
Changing the operation that uses to a rename() is actually fine.
The problem with maildir is that many of the IMAP-maildir drivers use
stat() information to store the message's IMAP UUID, and stat() is a
rather expensive operation in AFS.
In my case, I had written a c-client driver which stored the UUID in
the filename of the maildir message, which got around this -- and
there's also an issue regarding UUID generation which is best
implemented with a lock that to guarantee correct generation.
Its a mess. AFS is not for mail. Unix "user accounts" are not for
mail. Use an actual mail system and do it right ;)
-rob
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