[Dovecot] Error with dsync in TCP replication

[Patrick De Zordo]

Hey guys,

again this question..

 

We are trying to get dsync replication over TCP working..

But we are having a bit of troubles..

 

Our configuration (just most important parts):

---8<---------------------------------------------------------------

# 2.2.13 (304d545927d2): /etc/dovecot/dovecot.conf

# OS: Linux 3.13.0-24-generic x86_64 Ubuntu 14.04 LTS ext4

doveadm_password = secret

first_valid_uid = 150

last_valid_uid = 150

lda_mailbox_autocreate = yes

lda_mailbox_autosubscribe = yes

mail_gid = mail

mail_location = maildir:/var/vmail/%d/%n

mail_plugins = " quota listescape zlib notify replication"

mail_uid = vmail

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 ihave duplicate

namespace inbox {

  inbox = yes

  location =

  mailbox Archiv {

    auto = subscribe

    special_use = \Archive

  }

  mailbox Archive {

    auto = no

    special_use = \Archive

  }

  mailbox Drafts {

    auto = no

    special_use = \Drafts

  }

  mailbox Entwürfe {

    auto = no

    special_use = \Drafts

  }

  mailbox Junk {

    auto = subscribe

    special_use = \Junk

  }

  mailbox Sent {

    auto = subscribe

    special_use = \Sent

  }

  mailbox "Sent Messages" {

    auto = no

    special_use = \Sent

  }

  mailbox Trash {

    auto = no

    special_use = \Trash

  }

  prefix =

  separator = /

}

plugin {

  mail_replica = tcp:mx2.example.com:999

  quota = dict:user::proxy::quota

  quota_rule = *:storage=10MB

  quota_rule2 = Trash:storage=+10%%

  quota_warning = storage=95%% quota-warning 95 %u

  quota_warning2 = storage=80%% quota-warning 80 %u

  sieve = ~/.dovecot.sieve

  sieve_dir = ~/sieve

  zlib_save = bz2

  zlib_save_level = 9

}

protocols = " imap sieve pop3"

replication_max_conns = 1

service aggregator {

  fifo_listener replication-notify-fifo {

    mode = 0666

  }

  unix_listener replication-notify {

    mode = 0666

  }

}

service doveadm {

  inet_listener {

    port = 999

  }

}

service replicator {

  unix_listener replicator-doveadm {

    mode = 0600

  }

}

protocol lda {

  mail_plugins = " quota listescape zlib notify replication quota sieve
listescape zlib"

}

protocol imap {

  mail_plugins = " quota listescape zlib notify replication imap_quota
listescape zlib"

}

protocol sieve {

  managesieve_max_line_length = 65536

}

---8<---------------------------------------------------------------

 

The problem:

 

After a user adds a sieve script with his mail application (in this case
Thunderbird with plugin):

1.       the script is saved in “/var/vmail/%d/%n/sieve/script_name” == OK

2.       this file (“/var/vmail/%d/%n/sieve/script_name”) is then symlinked
to “/var/vmail/%d/%n/.dovecot.sieve” == OK

 

Now the problem kicks in:

1.       On the secondary server (mail_replica server) the script is created
+ the same symlink == OK

2.       In logs (on secondary) there is shown this error every time a sync
is done:

---8<---------------------------------------------------------------

dsync-server( <mailto:user at example.com> user at example.com): Error: Failed to
access mailbox dovecot/sieve: Internal error occurred. Refer to server log
for more information.

dsync-server( <mailto:user at example.com> user at example.com): Error:
stat(/var/vmail/example.com/user/.dovecot.sieve/tmp) failed: Not a directory

---8<---------------------------------------------------------------

 

Issuing “doveadm replicator status '*'” on first server gives back:

username                                                 priority fast sync
full sync failed

user at example.com                                         none     00:03:36
23:11:51  y

 

Sync from master->secondary is interrupted but sync from secondary->master
is working..

 

Thanks for any hint!

 

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Mit freundlichen Grüßen / Distinti saluti / Kind regards

De Zordo Patrick

patrick at spamreducer.eu