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, lvst...@webinabox.net.au): 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, lvst...@webinabox.net.au): Error: Timeout (29s) while waiting for lock for transaction log file /srv/mail/domains/w/webinabox.net.au/lvstest/Maildir/dovecot.index.log -- You received this bug notification because you are a member of Kernel 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1358226/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp