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Hi, I'm running dovecot 2.1.7 with vpopmail auth and Maildir on NFS (I have only one POP/IMAP server). All works fine but sometimes dovecot "imap" process crush and I would like to understand why: Error in log files: Dec 12 06:32:56 pop01eeh dovecot: imap-login: Login: user=<info at mydomain.com>, method=PLAIN, rip=1.2.3.4, lip=192.168.1.3, mpid=4086, session=<UbiBrU/tvACXCCva> Dec 12 06:50:25 pop01eeh dovecot: imap(info at mydomain.com), session=<UbiBrU/tvACXCCva>: Disconnected: Disconnected in IDLE in=654 out=70...

...cluster (enable nfsv4.0 and read delegation on Netapp and remount the volume on Linux Centos 6.7 clients with Dovecot+Director). > > It was a failure, after some minutes the load on clients was high, and in dovecot.log I found these errors (repeated continuously): > > Aug 17 20:28:17 pop01eeh dovecot: imap(info at domain.com): Error: mail_index_wait_lock_fd() failed with file /home/domains/domain.com/info/Maildir/dovecot.index.log: Input/output error > Aug 17 20:28:21 pop01eeh dovecot: imap(info at domain.com): Error: fcntl(/home/domains/domain.com/info/Maildir/dovecot.index.cache, w...

just a quick update: no issues with NFSv4.0 (load is slowly growing, currently ~7k mailboxes) instead, bad news from delegation front, we enabled it for a couple of days but we ran in ugly issues: processes went in "uninterruptible sleep" state, load average gets huge, reboot was the only escape :-( -brd Alessio Cecchi wrote: > Il 12/06/2015 13:02, brd ha scritto: > >Alessio

...ation" on my cluster (enable nfsv4.0 and read delegation on Netapp and remount the volume on Linux Centos 6.7 clients with Dovecot+Director). It was a failure, after some minutes the load on clients was high, and in dovecot.log I found these errors (repeated continuously): Aug 17 20:28:17 pop01eeh dovecot: imap(info at domain.com): Error: mail_index_wait_lock_fd() failed with file /home/domains/domain.com/info/Maildir/dovecot.index.log: Input/output error Aug 17 20:28:21 pop01eeh dovecot: imap(info at domain.com): Error: fcntl(/home/domains/domain.com/info/Maildir/dovecot.index.cache, wr...

...le nfsv4.0 and read delegation on Netapp and remount the volume on Linux Centos 6.7 clients with Dovecot+Director). >> >> It was a failure, after some minutes the load on clients was high, and in dovecot.log I found these errors (repeated continuously): >> >> Aug 17 20:28:17 pop01eeh dovecot: imap(info at domain.com): Error: mail_index_wait_lock_fd() failed with file /home/domains/domain.com/info/Maildir/dovecot.index.log: Input/output error >> Aug 17 20:28:21 pop01eeh dovecot: imap(info at domain.com): Error: fcntl(/home/domains/domain.com/info/Maildir/dovecot.index.cach...

...nd remount the volume on Linux >>> Centos 6.7 clients with Dovecot+Director). >>> >>> It was a failure, after some minutes the load on clients was high, >>> and in dovecot.log I found these errors (repeated continuously): >>> >>> Aug 17 20:28:17 pop01eeh dovecot: imap(info at domain.com): Error: >>> mail_index_wait_lock_fd() failed with file >>> /home/domains/domain.com/info/Maildir/dovecot.index.log: Input/output >>> error >>> Aug 17 20:28:21 pop01eeh dovecot: imap(info at domain.com): Error: >>> fcntl(...