[Dovecot] dotlock errors without using dotlock

[Brian Taber]

I have a few clients that have more than one user in the same mailbox.  
I have my setup using fctrl for mailbox and index locking.  My mail is 
stored on a network file system (gluster) and my indexes are stored on 
the local drive.  I have a few issues:

- My users mailboxes have issues where messages will be mixed up (you go 
to open a message and it gets a different message)
- messages will dissappear
- unable to open or delete messages
- errors in log about dotlocks being overwritten

Here is some of the log entries:

Our dotlock file /mail/mydomain.com/webmaster/dovecot-uidlist.lock was 
overridden (kept it 0 secs)
utime(/mail/mydomain.com/webmaster/dovecot-uidlist.lock) failed: No such 
file or directory
Transaction log file 
/mailindex/mydomain.com/webmaster/.INBOX/dovecot.index.log: marked corrupted
Our dotlock file /mail/mydomain.com/webmaster/dovecot-uidlist.lock was 
deleted (kept it 0 secs)
 FETCH for mailbox INBOX UID 4223 got too little data: 3078 vs 19825

My dovecot version is 1.0.9, my config is as follows:


# 1.0.9: /etc/dovecot/dovecot.conf
info_log_path: /dev/null
protocols: imap imaps pop3 pop3s
listen(default): *:143
listen(imap): *:143
listen(pop3): *:110
ssl_listen(default): *:943
ssl_listen(imap): *:943
ssl_listen(pop3): *:995
ssl_disable: yes
ssl_cert_file: /etc/dovecot/ssl/certs/dovecot.pem
ssl_key_file: /etc/dovecot/ssl/private/dovecot.pem
disable_plaintext_auth: no
login_dir: /usr/local/var/run/dovecot/login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
login_processes_count: 10
mail_location: maildir:/mail/%d/%Ln:INDEX=/mailindex/%d/%Ln
mmap_disable: yes
mbox_write_locks: fcntl
mbox_dirty_syncs: no
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
pop3_uidl_format(default):
pop3_uidl_format(imap):
pop3_uidl_format(pop3): %u
namespace:
  type: private
  separator: .
  inbox: yes
namespace:
  type: private
  separator: .
  prefix: INBOX.
  inbox: yes
  hidden: yes
auth default:
  cache_size: 2048
  count: 5
  passdb:
    driver: sql
    args: /etc/dovecot/dovecot-sql.conf
  userdb:
    driver: sql
    args: /etc/dovecot/dovecot-sql.conf


Any help would be appreciated...