On Tuesday 28 February 2006 13:29, Will McDonald wrote: > Hi all. > > We've just migrated our back-end NFS mailstore from FC1 systems to > CentOS4 and are experiencing problems/delays with vpopmail and user > Maildirs. IMAP is fine, it's just POP access that causes us problems. > > Now, NFS mounts successfully, the clients can see /home/vpopmail and > serve content as we would expect. IMAP works perfectly and sees new > messages as soon as they're delivered into the Maildir, but POP > doesn't seem to see new messages until about 90 minutes after it > arrived. > > Messages can be seen in users' Maildir/new on the filesystem. The > timestamps on new messages on the NFS filesystems don't appear to be > formatted correctly, I'm guessing this could cause the POP weirdness? > > On an NFS client... > [root at mailserv2 new]# ls -ltr > total 4 > -rw------- 1 vpopmail vchkpw 854 Feb 28 2006 > 1141126119.27119.mailserv1,S=773 > > Whereas on the NFS mailstore... > [root at tempmailstore1a new]# ls -ltr > total 4 > -rw------- 1 vpopmail vchkpw 854 Feb 28 12:44 > 1141126119.27119.mailserv1,S=773 > > 'touch'ing the files, either from the client or server doesn't appear > to fix the timestamps. > > The old FC mailstores were running... > kernel 2.4.22-1.2188.nptl > nfs-utils-1.0.6-1 > DRBD 0.6.12 > heartbeat-1.0.4-2.fr.c.1.um.2 > > The new CentOS mailstores and all their clients are running... > kernel 2.6.9-22.0.1.ELsmp > nfs-utils-1.0.6-65.EL4 > DRBD 0.7.14 > heartbeat-1.2.3.cvs.20050927-1.centos4 > Qmailrocks 2.2.0 > > /etc/exports on the mailstores contains... > /mnt/drbd/ mailserv1(rw,sync,no_root_squash) > /mnt/drbd/ mailserv2(rw,sync,no_root_squash) > /mnt/drbd/ mailserv3(rw,sync,no_root_squash) > /mnt/drbd/ mailserv4(rw,sync,no_root_squash) > > And the NFS mounts on the client mailservers look like... > > mailstore1:/mnt/drbd/home /home nfs defaults 0 0 > > If anyone's seen this or can shed any light it'd be much appreciated. > > Will. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos IMHO looks more like a POP issue to me although the time representation seems odd. But this could be nfs-client related. What does it look like when you mount a share locally on the server where it is exported ? I'm thinking locking/timing/uid's/accessrights... Is there anything in the log about POP ? Is it possible to run in debug-mode to generate some ? Optional: dovecot imap server will also do pop. -- Paul Schoonderwoerd Pollux IT - Open Source & Netwerkbeveiliging tel: 0294-283832 http://www.Pollux-IT.nl