Hello.
We are running dovecot 2.0.13 with mdbox+zlib on RHEL 5.7 x64, ext4. We use
NTP. Indexes are in a iSCSI raid 10, mailboxes in raid5. No NFS. We have
detected that sometimes all users get disconnected from roundcube at the same
time. In dovecot logs we hundreds of lines like this:
Nov 3 09:23:07 buzon dovecot: imap(mcrivero@mydomain): Warning: Created
dotlock file's timestamp is different than current time (1320308587 vs
1320308542): /buzones/mydomain/03/67/mcrivero/subscriptions
Nov 3 09:23:07 buzon dovecot: imap(mcrivero@mydomain): Connection closed
bytes=0/295
Nov 3 09:23:07 buzon dovecot: imap(delolmo@mydomain): Warning: Created dotlock
file's timestamp is different than current time (1320308587 vs 1320308542):
/buzones/mydomain/15/77/delolmo/subscriptions
Nov 3 09:23:07 buzon dovecot: imap(delolmo@mydomain): Connection closed
bytes=0/295
I have been googling but I only see problems with remote NFS, our setup does
not use NFS. I give you doveconf -n output & mount options, if more info es
needed, please ask.
doveconf -n output
# 2.0.13: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.18-274.el5 x86_64 Red Hat Enterprise Linux Server release 5.7
(Tikanga) ext4
auth_cache_negative_ttl = 10 secs
auth_cache_size = 10 M
auth_cache_ttl = 2 mins
auth_master_user_separator = *
auth_mechanisms = plain login
auth_worker_max_count = 3500
base_dir = /var/run/dovecot/
default_client_limit = 5000
default_process_limit = 6500
disable_plaintext_auth = no
imap_client_workarounds = tb-extra-mailbox-sep delay-newmail tb-lsub-flags
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
mail_fsync = never
mail_gid = entrega
mail_home = /buzones/mydomain/%2.26Hn/%2.200Hn/%n/home_usuario/
mail_location =
mdbox:/buzones/mydomain/%2.26Hn/%2.200Hn/%n:INDEX=/indices_dovecot/indices/%2.26Hn/%2.200Hn/%n
mail_max_userip_connections = 15000
mail_plugins = " zlib acl quota autocreate"
mail_uid = entrega
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date
mdbox_rotate_interval = 1 days
mdbox_rotate_size = 60 M
passdb {
args = /etc/dovecot/dovecot-ldap.conf
driver = ldap
}
passdb {
args = /etc/usuario_maestro.txt
driver = passwd-file
master = yes
}
passdb {
args = /etc/dovecot/dovecot-ldap.conf
driver = ldap
}
plugin {
acl = vfile
autocreate = SPAM
autocreate2 = Sent
autocreate3 = Drafts
autocreate4 = Trash
autosubscribe = SPAM
autosubscribe2 = Sent
autosubscribe3 = Drafts
autosubscribe4 = Trash
lda_mailbox_autosubscribe = yes
quota = dict:Cuota de usuario::file:/buzones/cuotas/%n
quota_rule2 = Trash:storage=+10%%
quota_warning = storage=90%% aviso_cuota 90 %u
sieve = /buzones/mydomain/%2.26Hn/%2.200Hn/%n/home_usuario/dovecot.sieve
sieve_dir = /buzones/mydomain/%2.26Hn/%2.200Hn/%n/home_usuario/sieve/
zlib_save = gz
zlib_save_level = 9
}
pop3_no_flag_updates = yes
protocols = pop3 imap sieve
service anvil {
client_limit = 25000
}
service auth {
client_limit = 28000
unix_listener auth-master {
user = entrega
}
unix_listener auth-userdb {
user = entrega
}
user = root
}
service aviso_cuota {
executable = script /usr/local/bin/quota-warning.sh
unix_listener aviso_cuota {
mode = 0666
}
user = entrega
}
service imap-login {
executable = /usr/libexec/dovecot/imap-login
group = dovenull
service_count = 0
}
service imap {
executable = /usr/libexec/dovecot/imap
process_limit = 6000
}
service managesieve-login {
executable = /usr/libexec/dovecot/managesieve-login
inet_listener sieve {
port = 2000
}
process_limit = 2000
}
service managesieve {
executable = /usr/libexec/dovecot/managesieve
process_limit = 5000
}
service pop3-login {
executable = /usr/libexec/dovecot/pop3-login
process_limit = 4000
service_count = 0
}
service pop3 {
executable = /usr/libexec/dovecot/pop3
process_limit = 4000
}
ssl_ca = </etc/pki/generico/cacert.crt.pem
ssl_cert = </etc/pki/generico/wildcard-us_es.crt
ssl_key = </etc/pki/generico/wildcard-key.pem
userdb {
args = /etc/dovecot/dovecot-ldap.conf
driver = ldap
}
userdb {
args = /etc/dovecot/dovecot-ldap-userdb.conf
driver = ldap
}
verbose_proctitle = yes
protocol sieve {
managesieve_implementation_string = dovecot
managesieve_logout_format = bytes=%i/%o
managesieve_max_line_length = 65536
}
protocol lda {
hostname = mydomain
info_log_path =
log_path =
mail_fsync = optimized
mail_plugins = sieve zlib quota
postmaster_address = evcorreo@mydomain
syslog_facility = mail
}
protocol imap {
mail_plugins = zlib autocreate quota imap_quota
}
protocol pop3 {
mail_plugins = zlib
pop3_enable_last = yes
pop3_uidl_format = %g
}
mount points:
/dev/mapper/Volumen_0-Logico_0 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/mapper/Buzon_mydomain-buzones on /buzones type ext4
(rw,noatime,nodiratime,nobarrier,commit=15,data=writeback)
Indexes are located somewhere in "/" mount point.
