Jeff Gustafson wrote:
On Sat, 2012-08-11 at 00:56 +0200, Daniel Parthey wrote:
Hi Jeff, Please start by following the instructions at http://dovecot.org/bugreport.html and post your 'doveconf -n' output in order to provide possibly important information about your system and configs.
Storage is local hardware-based RAID (SATA drives). FS is ext4. No core dump that I know of. Command used (mailbox is over 2GB):
# su vmail -c "dsync -u user@domain.com backup ssh vmail@bk05 dsync -c /etc/dovecot/dovecot.conf -u user@domain.com"
Config file: # 2.1.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-220.17.1.el6.x86_64 x86_64 CentOS release 6.2 (Final)
Maybe you have run into the epoll kernel bug under RHEL/CentOS:
http://dovecot.org/oldnews.html Thu Mar 22 14:38:53 EET 2012 Red Hat/CentOS users: A recent kernel update causes Dovecot to start failing after it has reached 1000 child processes. To fix this, downgrade your kernel until Red Hat releases a fixed kernel.
See also: https://bugzilla.redhat.com/show_bug.cgi?id=681578
You should try another kernel: https://rhn.redhat.com/errata/RHSA-2012-1129.html