This seems to be a known issue with NFS and ZFS on FreeBSD 7.2-STABLE.
http://www.freebsd.org/cgi/query-pr.cgi?pr=135412
Quoting "Rick Romero" <rick(_at_)havokmon(_dot_)com>:
Hey guys,
I run Qmail/vpopmail based mail server(s) on FreeBSD, and due to recent
ZFS issues with 7.x on the mailbox stoage server, I've upgraded to
kernel 7.2-stable. This seems to have upgraded NFS to v4 as well.
I've tried using NFS from ZFS's own export, plus 'external' NFS
via /etc/exports. Both behave the same.
Due to that upgrade, I seem to have come across a bug in procmail's
Maildir delivery. This doesn't occur with maildrop or vdelivermail, and
I also found a post from December regarding NFSv4 in general:
http://drewp.quickwitretort.com/2008/12/24/1
In any case, when processing through procmail from either FreeBSD 6.2 or
a FreeBSD 7.2 NFS client, the following occurs in my procmail.log:
procmail: Match on "^X-Spam-Status:.*Yes"
procmail: Error while writing to
"/usr/home/vpopmail/domains/havokmon.com/rick/Maildir/.Spam/tmp/1244517910.82369_0.www51.havokmon.com"
procmail: Couldn't create or rename temp file
"/usr/home/vpopmail/domains/havokmon.com/rick/Maildir/.Spam/tmp/1244517910.82369_0.www51.havokmon.com"
The file is then 'left' in /tmp :
# ls
-la
/usr/home/vpopmail/domains/havokmon.com/rick/Maildir/.Spam/tmp/1244517910.82369_0.www51.havokmon.com
---------- 1 vpopmail vchkpw 0 Jun 8
22:25
/usr/home/vpopmail/domains/havokmon.com/rick/Maildir/.Spam/tmp/1244517910.82369_0.www51.havokmon.com
The file gets created with no permissions. From what the above post
says, it seems procmail uses O_EXCL in some way -which doesn't work
correctly over NFSv4. I've also had the same issue with older FreeBSD
installs when editing a file with Vi - it creates a .swp file
incorrectly then complains. Newer versions of Vi don't have that
problem. Unfortunately procmail is up to date, and still has the same
problem.
Is this a known issue? Is there a fix? My filters aren't all that
complicated (well, the individual scripts aren't :), I'd just like them
to work again.
Any sugestions are appreciated! Thanks!
Rick
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