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[Trent Lloyd <lathiat@xxxxxx>]

I keep seeing this as well, my use case is a mail server (dovecot).  It
always seems to happen for less than a second, the times don't seem
predictable and two 14.04 servers accessing the same share report the
issues and different times, so I'm not sure it's really related to the
remote end.

I am also getting locking issues with dovecot that seem to always appear
about 90-120 seconds after this appears in syslog

Aug 21 06:48:55 mail-01 kernel: [2909938.530590] lockd: server 10.10.10.232 not responding, still trying
Aug 21 06:48:55 mail-01 kernel: [2909938.531290] lockd: server 10.10.10.232 OK
... [snip] ....
Aug 21 08:17:11 mail-01 kernel: [2915231.997469] lockd: server 10.10.10.232 not responding, still trying
Aug 21 08:17:11 mail-01 kernel: [2915231.998316] lockd: server 10.10.10.232 OK
Aug 21 08:31:04 mail-01 kernel: [2916064.970993] lockd: server 10.10.10.232 not responding, still trying
Aug 21 08:31:04 mail-01 kernel: [2916064.980768] lockd: server 10.10.10.232 OK
Aug 21 08:41:31 mail-01 kernel: [2916691.595302] lockd: server 10.10.10.232 not responding, still trying
Aug 21 08:41:31 mail-01 kernel: [2916691.596268] lockd: server 10.10.10.232 OK
Aug 21 08:50:25 mail-01 kernel: [2917224.586795] lockd: server 10.10.10.232 not responding, still trying
Aug 21 08:50:25 mail-01 kernel: [2917224.587609] lockd: server 10.10.10.232 OK


Aug 21 06:50:52 mail-01 dovecot: lmtp(18603, lvstest@xxxxxxxxxxxxxxxx): Error: Timeout (29s) while waiting for lock for transaction log file /srv/mail/domains/w/webinabox.net.au/lvstest/Maildir/dovecot.index.log
Aug 21 08:42:11 mail-01 dovecot: lmtp(14261, lvstest@xxxxxxxxxxxxxxxx): Error: Timeout (29s) while waiting for lock for transaction log file /srv/mail/domains/w/webinabox.net.au/lvstest/Maildir/dovecot.index.log

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1358226

Title:
  kernel and lockd xprt_adjust_timeout rq_timeout

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I am seeing the following messages in syslog. There are no other
  messages around that time to suggest why it is happening.

  Aug 18 11:01:16 hostname kernel: [943559.414398] xprt_adjust_timeout: rq_timeout = 0!
  Aug 18 11:01:16 hostname kernel: [943559.414401] lockd: server nfs_server not responding, still trying
  Aug 18 11:01:16 hostname kernel: [943559.415347] lockd: server nfs_server OK

  System is:
  Linux hostname 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
  Ubuntu 14.04.1 LTS

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