Failed to map transaction log path - Stale file handle
Gonzalo Palacios Goicolea
gonzalo.palacios at externo.uam.es
Tue Mar 2 09:56:48 EET 2021
Hi Aki,
Thanks for your quick answer.
I've read it's recommended to use different servers for director and
backends. So, for a 5 backend cluster, how many director servers are
recommended? I guess that at least 2, but if it's better to use more
than 2, please, let me know.
Best regards
Gonzalo
El 02/03/2021 a las 8:35, Aki Tuomi escribió:
> It has never been safe, not even in 2.2.10, to access mail from multiple backends concurrently. You have just gotten lucky.
>
> You must use director (or similar solution) to ensure all sessions end up in same server.
>
> Aki
>
>> On 02/03/2021 09:26 Gonzalo Palacios Goicolea <gonzalo.palacios at externo.uam.es> wrote:
>>
>>
>> Hi Aki
>> We're using NFS v3. Should we use v4 to avoid this problem?
>>
>> Regarding concurrent access, when a user uses more than one device it can go to any of the servers. It's the same config we had with dovecot-2.2.10 that never gave us this problem.
>> So, if the issue is related to concurrent access, is it any configuration we can apply to solve it? Or the only solution is director?
>> Thanks again
>>
>> El 02/03/2021 a las 7:27, Aki Tuomi escribió:
>>
>>>> On 01/03/2021 14:59 Gonzalo Palacios Goicolea <gonzalo.palacios at externo.uam.es> wrote:
>>>>
>>>>
>>>> Hi All,
>>>>
>>>> We recently moved from RHEL6 to RHEL7 and updated dovecot from dovecot-2.2.10-1_14.el6.x86_64 to dovecot-2.2.36-8.el7.x86_64. We use NFS for storing the mail, and 5 servers running at the same time.
>>>> Before updating dovecot we stopped the service and deleted all dovecot.index* files
>>>> Now we're experiencing some problems. For example, when deleting an email it is note deleted and appears again duplicated. These are the logs:
>>>>
>>>> Feb 28 08:50:42 server5 dovecot: imap(user at domain): Error: Index path/Maildir/dovecot.index: Lost log for seq=5 offset=228: Missing middle file seq=5 (between 5..4294967295, we have seqs 4): Log is locked - newer log can't exist (initial_mapped=1, reason=Index mapped)
>>>> Feb 28 08:50:42 server5 dovecot: imap(user at domain): Warning: fscking index file path/Maildir/dovecot.index
>>>> Feb 28 08:50:42 server5 dovecot: imap(user at domain): Error: Failed to map transaction log path/Maildir/dovecot.index.log at sync_offset=10328 after locking: pread() failed: Stale file handle
>>>> Feb 28 08:50:42 server5 dovecot: imap(user at domain): Error: Index path/Maildir/dovecot.index: Lost log for seq=5 offset=228: Missing middle file seq=5 (between 5..4294967295, we have seqs 4): Requested newer log than exists - still after NFS flush: Log inode is unchanged (initial_mapped=1, reason=Index mapped)
>>>> Feb 28 08:50:45 server5 dovecot: imap(user at domain): Error: Failed to map transaction log path/Maildir/dovecot.index.log at sync_offset=10328 after locking: pread() failed: Stale file handle
>>>> Feb 28 08:50:45 server5 dovecot: imap(user at domain): Error: Failed to map view for path/Maildir/dovecot.index: Missing middle file seq=5 (between 5..5, we have seqs 4): Requested newer log than exists - still after NFS flush: Log inode is unchanged
>>>>
>>>> Usually restarting the email client solves the problem for a while. We've tried deleting the indexes but it happens again some time later.
>>>>
>>>> This is dovecot config:
>>>>
>>>> dovecot -n
>>>> # 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf
>>>> # Pigeonhole version 0.4.24 (124e06aa)
>>>> # OS: Linux 3.10.0-1160.6.1.el7.x86_64 x86_64 Red Hat Enterprise Linux Server release 7.9 (Maipo)
>>>> # Hostname: server
>>>> auth_cache_negative_ttl = 5 mins
>>>> auth_cache_size = 500 M
>>>> auth_cache_ttl = 5 mins
>>>> auth_failure_delay = 5 secs
>>>> default_vsz_limit = 1 G
>>>> disable_plaintext_auth = no
>>>> hostname = server
>>>> imap_logout_format = in(bytes read)=%i out(bytes sent)=%o
>>>> listen = *
>>>> lock_method = dotlock
>>>> mail_fsync = always
>>>> mail_location = maildir:%h/Maildir
>>>> mail_nfs_index = yes
>>>> mail_nfs_storage = yes
>>>> mail_plugins = " quota mail_log notify"
>>>> 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 index ihave duplicate mime foreverypart extracttext imapflags notify
>>>> mbox_write_locks = fcntl
>>>> mmap_disable = yes
>>>> namespace {
>>>> location = maildir:%h/Maildir/_backup
>>>> prefix = _backup.
>>>> separator = .
>>>> type = private
>>>> }
>>>> 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 = /etc/dovecot/dovecot-ldap.conf.ext
>>>> driver = ldap
>>>> }
>>>> plugin {
>>>> mail_log_events = delete undelete expunge mailbox_delete mailbox_rename mailbox_create save
>>>> mail_log_fields = uid box msgid from subject
>>>> quota = maildir:_backup:ns=
>>>> quota_exceeded_message = El espacio asignado para el almacenamiento del correo del destinatario ha superado su capacidad total. Por ello, el correo que usted intenta enviar no se puede entregar al destinatario.
>>>> quota_warning = storage=70%% quota-warning 70 %u
>>>> quota_warning1 = storage=90%% quota-warning 90 %u
>>>> quota_warning2 = storage=95%% quota-warning 95 %u
>>>> quota_warning3 = storage=99%% quota-warning 99 %u
>>>> sieve = ~/.dovecot.sieve
>>>> sieve_dir = ~/Maildir/sieve
>>>> sieve_extensions = +notify +imapflags
>>>> }
>>>> postmaster_address = postmaster at domain
>>>> protocols = imap pop3 sieve
>>>> service auth {
>>>> unix_listener auth-userdb {
>>>> group = vmail
>>>> mode = 0666
>>>> user = vmail
>>>> }
>>>> }
>>>> service imap-login {
>>>> inet_listener imap {
>>>> port = 143
>>>> }
>>>> process_min_avail = 20
>>>> }
>>>> service imap {
>>>> process_limit = 2048
>>>> }
>>>> service managesieve-login {
>>>> inet_listener sieve {
>>>> port = 4190
>>>> }
>>>> inet_listener sieve_deprecated {
>>>> port = 2000
>>>> }
>>>> process_min_avail = 20
>>>> }
>>>> service pop3-login {
>>>> inet_listener pop3 {
>>>> port = 110
>>>> }
>>>> process_min_avail = 20
>>>> }
>>>> service pop3 {
>>>> process_limit = 2048
>>>> }
>>>> service quota-warning {
>>>> executable = script /etc/dovecot/scripts_notification_quota/quota-warning.sh
>>>> unix_listener quota-warning {
>>>> user = vmail
>>>> }
>>>> user = vmail
>>>> }
>>>> ssl = no
>>>> ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
>>>> ssl_key = # hidden, use -P to show it
>>>> submission_host = smtp.domain:25
>>>> syslog_facility = local1
>>>> userdb {
>>>> args = /etc/dovecot/dovecot-ldap.conf.ext
>>>> driver = ldap
>>>> }
>>>> protocol lda {
>>>> mail_plugins = " quota mail_log notify sieve"
>>>> }
>>>> protocol imap {
>>>> mail_max_userip_connections = 10000
>>>> mail_plugins = " quota mail_log notify imap_quota"
>>>> }
>>>> protocol pop3 {
>>>> mail_max_userip_connections = 10
>>>> }
>>>>
>>>> Can you please help me?
>>>> Thanks in advance and best regards
>>>>
>>>> --
>>>>
>>>> Gonzalo Palacios Goicolea
>>>>
>>> Hi!
>>>
>>> Are you ensuring that the same user is not concurrently being accessed by multiple backends. All mail sessions for a user, including mail delivery.
>>>
>>> Are you using NFSv3 or NFSv4?
>>>
>>> Aki
>>>
>> --
>>
>> Gonzalo Palacios Goicolea
>> U.T de Infraestructura de Equipos Centrales
>> Tecnologías de la Información
>> Universidad Autónoma de Madrid • Campus de Cantoblanco
>>
>> Antes de imprimir este correo piense si es necesario.Cuidemos el medioambiente.
--
*Gonzalo Palacios Goicolea*
U.T de Infraestructura de Equipos Centrales
/Tecnologías de la Información/
Universidad Autónoma de Madrid • Campus de Cantoblanco
<3D"https://alumni.uam.es/">
Antes de imprimir este correo piense si es necesario.Cuidemos el
medioambiente.
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