Hi,
I need to place a maildir storage on a NFS filesystem, so I set up the config
like this:
mmap_disable = yes
mail_nfs_storage = yes
mail_nfs_index = yes
mail_fsync = always
lock_method = dotlock (also tried fcntl - local lockd is running, no success,
now using dotlock, to be sure while debugging)
The problem is that Dovecot (2.2.9/2.2.10 - the relevant code in mail-index.c
is the same) logs a fatal error and quits the session (no daemon
crash/coredump).
Jan 07 14:13:31 auth: Debug: client in: AUTH 1 PLAIN service=pop3
session=fRCRJGHvbADDUKU9 lip=192.168.100.102 rip=IP_ADDR
lport=1110 rport=48236 resp=AHRyb3RvbjEAdHJvdG9uMQ== (previous base64
data may contain sensitive data)
Jan 07 14:13:31 auth: Debug: passwd-file(troton1,IP_ADDR,<fRCRJGHvbADDUKU9>):
lookup: user=troton1 file=/usr/local/etc/dovecot/passwd-file
Jan 07 14:13:31 auth: Debug: client passdb out: OK 1 user=troton1
Jan 07 14:13:31 auth: Debug: master in: REQUEST 1289355265 29049 1
4f9fdd9e4069fa503e8e6bcc09d4cf30 session_pid=29089
Jan 07 14:13:31 auth: Debug: passwd-file(troton1,IP_ADDR,<fRCRJGHvbADDUKU9>):
lookup: user=troton1 file=/usr/local/etc/dovecot/passwd-file
Jan 07 14:13:31 auth: Debug: master userdb out: USER 1289355265 troton1
uid=81 gid=81 home=/home/troton1 mail=maildir:~/Maildir
Jan 07 14:13:31 pop3-login: Info: Login: user=<troton1>, method=PLAIN,
rip=IP_ADDR, lip=192.168.100.102, mpid=29089, session=<fRCRJGHvbADDUKU9>
Jan 07 14:13:31 pop3: Debug: Added userdb setting: mail=maildir:~/Maildir
Jan 07 14:13:31 pop3(troton1): Debug: Effective uid=81, gid=81,
home=/home/troton1
Jan 07 14:13:31 pop3(troton1): Debug: Namespace inbox: type=private, prefix=,
sep=., inbox=yes, hidden=no, list=yes, subscriptions=yes
location=maildir:~/Maildir
Jan 07 14:13:31 pop3(troton1): Debug: maildir++: root=/home/troton1/Maildir,
index=, indexpvt=, control=, inbox=/home/troton1/Maildir, alt=
Jan 07 14:13:31 pop3(troton1): Info: DEBUG1: fsync_mode=2 , mask=0
Jan 07 14:13:31 pop3(troton1): Info: DEBUG2: fsync_mode=2 flags=85
Jan 07 14:13:31 pop3(troton1): Debug: Namespace : Using permissions from
/home/troton1/Maildir: mode=0700 gid=default
Jan 07 14:13:31 pop3(troton1): Info: DEBUG2: fsync_mode=0 flags=85
The user/passdb is just a plaintext file, for debugging purposes.
But what is strange, the messages system log shows:
Jan 7 14:13:31 mailhub2 dovecot: pop3(troton1): Fatal: nfs flush requires
mail_fsync=always
That is obviously wrong, even its own doveconf -n utility shows the correct
value.
# doveconf -n | grep -E 'sync|nfs'
mail_fsync = always
mail_nfs_index = yes
mail_nfs_storage = yes
maildir_very_dirty_syncs = yes
Affected code seems to be in the lib-index/mail-index.c file, mail_index_file
function - around line 585 :
// my custom debug line
i_info("DEBUG2: fsync_mode=%u flags=%u", (unsigned
int)(index->fsync_mode),(unsigned int)flags);
if ((flags & MAIL_INDEX_OPEN_FLAG_NFS_FLUSH) != 0 &&
index->fsync_mode != FSYNC_MODE_ALWAYS)
i_fatal("nfs flush requires mail_fsync=always");
The first time it sees fsync_mode=2 (which is correct value of
FSYNC_MODE_ALWAYS), but next function call is with index->fsync_mode=0 and an
error is raised, see the logfile above.
Dovecot correctly creates its working files in user's home directory -
dovecot-uidlist, dovecot-uidvalidity, dovecot-uidvalidity.52cbfd7b,
dovecot.index.log .
The complete (testing, not production) doveconf -n is:
==
# 2.2.10: /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 7.3-RELEASE-p3 amd64
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = sha1
default_process_limit = 200
disable_plaintext_auth = no
first_valid_uid = 81
imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
info_log_path = /var/log/dovecot.log
last_valid_uid = 81
listen = 192.168.100.102
lock_method = dotlock
mail_debug = yes
mail_fsync = always
mail_gid = 81
mail_location = maildir:%h/Maildir
mail_nfs_index = yes
mail_nfs_storage = yes
mail_prefetch_count = 5
mail_uid = 81
mailbox_list_index = yes
maildir_stat_dirs = yes
maildir_very_dirty_syncs = yes
mmap_disable = yes
namespace inbox {
inbox = yes
location =
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
separator = .
type = private
}
passdb {
args = scheme=plain username_format=%n /usr/local/etc/dovecot/passwd-file
driver = passwd-file
}
plugin {
mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
mail_log_fields = uid box msgid subject size
}
pop3_enable_last = yes
pop3_save_uidl = yes
protocols = imap pop3
service doveadm {
inet_listener {
port = 9292
}
}
service imap-login {
inet_listener imap {
port = 1143
}
}
service imap {
process_limit = 250
}
service pop3-login {
inet_listener pop3 {
port = 1110
}
}
service pop3 {
process_limit = 200
}
ssl = no
userdb {
args = username_format=%n /usr/local/etc/dovecot/passwd-file
default_fields = uid=81 gid=0 home=/home/%n
driver = passwd-file
}
protocol imap {
mail_max_userip_connections = 5
}
protocol pop3 {
mail_max_userip_connections = 5
}
==
OS: 7.3-RELEASE-p3 FreeBSD 7.3-RELEASE-p3 #1 amd64
Affected Dovecot version: 2.2.9, 2.2.10
How to repeat: Anytime I enter the correct username/pass pair
And I tried to place the homedir on a local disk too, and I got the same error
as on NFS.
Any ideas, what could possibly be wrong ?
Is it a feature or a bug ?
Thanks for your help.
Regards,
Troton
