Replication issues master <-> master nfs backend

[William L. Thomson Jr.]

Forgot to mention before I run 2 NFS servers, each mail server uses a different NFS server. It 
is not the same NFS server for both. Just to clarify that, as I am not trying to replicate using 
the same NFS server with 2 mail servers. I have 2 of each, mail + nfs, and not at the same 
location.

On Wednesday, March 23, 2016 11:19:07 AM Teemu Huovila wrote:
>
> You should still include your doveconf -n output. 

Below, end of email

> Also any errors and warnings logged by dovecot, could be useful.

Not many errors are logged. It does not give me anything to go on for the replication issues. 
The only errors I have ever seen logged other than some initial deployment fubar with 
assertion errors. The only other error logged is due to an account I use for nagios but does 
not exist, nobody.

Mar 23 13:01:44 Error: dsync-local(nobody): Couldn't create lock /var/empty/.dovecot-
sync.lock: Permission denied

Messed with changing nobody's home directory but screwed up other things like ssh. I just 
do 

doveadm replicator remove nobody

Not sure if I can put that in a config file, or somewhere so it is more permanent. I could not 
figure out how to ignore that user, while bring in all others.

Occasionally some others with inability to reach the other mail server due to VPN issues. But 
that is not happening when I am experiencing replication issue and is very rare. Just does log 
a few times when it happens.


doveconf -n
# 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf
# OS: Linux 4.3.3-hardened-r1 x86_64 Gentoo Base System release 2.2 
disable_plaintext_auth = no
doveadm_password =  # hidden, use -P to show it
first_valid_gid = 1000
first_valid_uid = 1000
listen = *,[::]
login_greeting = Mail server ready.
login_log_format_elements = user=<%u> ip=[%r] port=[%b] method=[%m] security=[%c]
mail_fsync = always
mail_location = maildir:~/.maildir
mail_nfs_index = yes
mail_plugins = " notify replication"
mmap_disable = yes
namespace inbox {
  inbox = yes
  location = 
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix = 
}
passdb {
  args = *
  driver = pam
}
plugin {
  mail_replica = tcp:mail2.obsidian-studios.com:12345
}
service aggregator {
  fifo_listener replication-notify-fifo {
    mode = 0666
    user = root
  }
  unix_listener replication-notify {
    mode = 0666
    user = root
  }
}
service doveadm {
  inet_listener {
    port = 12345
  }
}
service imap-login {
  inet_listener imap {
    port = 0
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
}
service pop3-login {
  inet_listener pop3 {
    port = 0
  }
  inet_listener pop3s {
    port = 995
    ssl = yes
  }
}
service replicator {
  process_min_avail = 1
  unix_listener replicator-doveadm {