Hi Spirit!
No, I was busy yesterday. I discovered the system crashed again this morning. It's may be related to backup. I will be out this morning. I'll try to look more later today.
Here is a part of the syslog just when the system start to be broken.
Mar 13 22:10:03 aweb-vs004 rrdcached[1364]: flushing old values
Mar 13 22:10:03 aweb-vs004 rrdcached[1364]: rotating journals
Mar 13 22:10:03 aweb-vs004 rrdcached[1364]: started new journal /var/lib/rrdcached/journal//rrd.journal.1363209003.512558
Mar 13 22:10:03 aweb-vs004 rrdcached[1364]: removing old journal /var/lib/rrdcached/journal//rrd.journal.1363201803.512520
Mar 13 22:11:50 aweb-vs004 pvestatd[537036]: status update time (40.931 seconds)
Mar 13 22:12:02 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:12:32 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:12:42 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:13:22 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:14:28 aweb-vs004 pvestatd[537036]: status update time (7.891 seconds)
Mar 13 22:14:52 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:17:01 aweb-vs004 /USR/SBIN/CRON[812109]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Mar 13 22:18:16 aweb-vs004 pvestatd[537036]: status update time (6.541 seconds)
Mar 13 22:18:52 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:19:02 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:20:50 aweb-vs004 pvedaemon[536993]: <root@pam> successful auth for user 'root@pam'
Mar 13 22:24:02 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:24:13 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:24:22 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:24:57 aweb-vs004 pvestatd[537036]: status update time (27.383 seconds)
Mar 13 22:24:59 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:25:10 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:25:19 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:25:29 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:26:51 aweb-vs004 pvestatd[537036]: status update time (73.925 seconds)
Mar 13 22:27:56 aweb-vs004 pvestatd[537036]: status update time (65.352 seconds)
Mar 13 22:28:02 aweb-vs004 pvestatd[537036]: status update time (5.716 seconds)
Mar 13 22:28:18 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:28:29 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:28:38 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:28:48 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:28:58 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:29:16 aweb-vs004 pvestatd[537036]: status update time (10.056 seconds)
Mar 13 22:29:18 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:29:29 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:29:38 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:29:48 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:29:58 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:30:28 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:30:58 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:31:08 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
Mar 13 22:31:26 aweb-vs004 corosync[239953]: [TOTEM ] A processor failed, forming new configuration.
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] CLM CONFIGURATION CHANGE
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] New Configuration:
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.17)
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.24)
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] Members Left:
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] Members Joined:
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] CLM CONFIGURATION CHANGE
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] New Configuration:
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.17)
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.24)
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] Members Left:
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [CLM ] Members Joined:
Mar 13 22:31:29 aweb-vs004 corosync[239953]: [TOTEM ] A processor joined or left the membership and a new membership was formed.
Mar 13 22:31:36 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e f 10 16 17
Mar 13 22:31:36 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e f
Mar 13 22:31:37 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:31:38 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:31:39 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:31:40 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:31:41 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:31:42 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:31:43 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:31:44 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:31:45 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:31:46 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:31:46 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:31:46 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:31:46 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e f 19
Mar 13 22:31:46 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: d e f 19
Mar 13 22:31:47 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:31:48 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:31:49 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:31:50 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:31:51 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:31:52 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:31:53 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:31:54 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:31:55 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:31:55 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: d e f 19
Mar 13 22:31:56 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:31:56 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:31:56 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:31:57 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:31:58 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:31:58 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e f 19
Mar 13 22:31:59 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:32:00 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:32:00 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e f 19
Mar 13 22:32:01 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:32:02 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:32:03 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e f 19
Mar 13 22:32:03 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:32:04 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:32:05 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:32:06 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:32:06 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:32:06 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:32:07 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:32:08 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:32:09 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:32:10 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:32:11 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:32:12 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:32:13 aweb-vs004 corosync[239953]: [TOTEM ] A processor failed, forming new configuration.
Mar 13 22:32:13 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:32:14 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:32:15 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:32:16 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:32:16 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:32:16 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:32:17 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:32:18 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:32:19 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:32:20 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:32:21 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:32:22 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:32:23 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:32:24 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:32:25 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:32:25 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: b c d e 12 13 14 15
Mar 13 22:32:25 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e 12 13
Mar 13 22:32:26 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:32:26 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:32:26 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:32:27 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:32:28 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:32:29 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:32:30 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:32:30 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e 12 13
Mar 13 22:32:30 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e 12 13
Mar 13 22:32:31 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:32:32 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:32:33 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: c d e 12 13
Mar 13 22:32:33 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:32:34 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:32:35 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:32:36 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:32:36 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:32:36 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:32:37 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:32:37 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: d e 12 13
Mar 13 22:32:38 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:32:39 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:32:40 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:32:41 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:32:42 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:32:43 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:32:44 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:32:45 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e 12 13
Mar 13 22:32:45 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:32:46 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:32:46 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:32:46 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:32:47 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 10
Mar 13 22:32:48 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 20
Mar 13 22:32:49 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 30
Mar 13 22:32:50 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 40
Mar 13 22:32:51 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 50
Mar 13 22:32:52 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e 12 13
Mar 13 22:32:52 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 60
Mar 13 22:32:53 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 70
Mar 13 22:32:54 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 80
Mar 13 22:32:54 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e 12 13
Mar 13 22:32:55 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 90
Mar 13 22:32:56 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retry 100
Mar 13 22:32:56 aweb-vs004 pmxcfs[534005]: [status] notice: cpg_send_message retried 100 times
Mar 13 22:32:56 aweb-vs004 pmxcfs[534005]: [status] crit: cpg_send_message failed: 6
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [TOTEM ] Retransmit List: e 12 13
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] CLM CONFIGURATION CHANGE
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] New Configuration:
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.17)
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.24)
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] Members Left:
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] Members Joined:
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] CLM CONFIGURATION CHANGE
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] New Configuration:
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.17)
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] #011r(0) ip(62.210.166.24)
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] Members Left:
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CLM ] Members Joined:
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [TOTEM ] A processor joined or left the membership and a new membership was formed.
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [CPG ] chosen downlist: sender r(0) ip(62.210.166.17) ; members(old:2 left:0)
Mar 13 22:32:57 aweb-vs004 corosync[239953]: [MAIN ] Completed service synchronization, ready to provide service.
Mar 13 22:33:32 aweb-vs004 pvestatd[537036]: status update time (116.680 seconds)
Mar 13 22:33:34 aweb-vs004 pvestatd[537036]: WARNING: command 'df -P -B 1 /mnt/pve/Backup-VZDump' failed: got timeout
I tried command 'df -P -B 1 /mnt/pve/Backup-VZDump' manualy. No problem. It's a NFS mount.
Found this in dmesg:
INFO: task lzop:990183 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
lzop D ffff88010d6fc680 0 990183 990179 0 0x00000000
ffff8801473ff9c8 0000000000000082 ffff8801473ff990 0000000000000002
0000000000000003 00000000000003c8 ffff880028250610 ffff880200000000
ffff880028250600 000000012830c448 ffff88010d6fcc48 000000000001e9c0
Call Trace:
[<ffffffff81123d10>] ? sync_page+0x0/0x50
[<ffffffff8151cd93>] io_schedule+0x73/0xc0
[<ffffffff81123d4d>] sync_page+0x3d/0x50
[<ffffffff8151d75f>] __wait_on_bit+0x5f/0x90
[<ffffffff81123f83>] wait_on_page_bit+0x73/0x80
[<ffffffff81096c00>] ? wake_bit_function+0x0/0x40
[<ffffffff81126280>] grab_cache_page_write_begin+0xc0/0x150
[<ffffffffa0652477>] nfs_write_begin+0x77/0x230 [nfs]
[<ffffffff811248bb>] generic_file_buffered_write_iter+0x10b/0x2b0
[<ffffffff81126702>] __generic_file_write_iter+0x1a2/0x3b0
[<ffffffff81126995>] __generic_file_aio_write+0x85/0xa0
[<ffffffff81126a38>] generic_file_aio_write+0x88/0x100
[<ffffffffa06531fc>] nfs_file_write+0x10c/0x210 [nfs]
[<ffffffffa06530f1>] ? nfs_file_write+0x1/0x210 [nfs]
[<ffffffff81197c9a>] do_sync_write+0xfa/0x140
[<ffffffff81096bc0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8100984c>] ? __switch_to+0x1ac/0x320
[<ffffffff81197f78>] vfs_write+0xb8/0x1a0
[<ffffffff8100ba8e>] ? common_interrupt+0xe/0x13
[<ffffffff81198871>] sys_write+0x51/0x90
[<ffffffff8100b102>] system_call_fastpath+0x16/0x1b