[Ocfs2-users] ocfs2 hangs the system

Xavier Diumé xdiume at gmail.com
Fri Apr 8 03:56:11 PDT 2011


Hello,
Two servers are using iscsi to mount lun's from a SAN. The filesystem used
is ocfs2 with Debian 6, with a multipath configuration.
The two servers are working well together but something hangs one of the
server. Look at  dmesg outout:

[431163.609779] o2net: connection to node kvs2 (num 2) at
192.168.0.25:7777has been idle for 30.0 seconds, shutting it down.
[431163.609788] (0,0):o2net_idle_timer:1495 here are some times that might
help debug the situation: (tmr 1302076000.284162 now 1302076030.282028 dr
1302076000.284145 adv 1302076000.284167:1302076000.284168 func
(7e2ba784:504) 1302075956.329407:1302075956.329419)
[431163.609824] o2net: no longer connected to node kvs2 (num 2) at
192.168.0.25:7777
[431166.605867] o2net: accepted connection from node kvs2 (num 2) at
192.168.0.25:7777
[431708.706720] o2net: connection to node kvs2 (num 2) at
192.168.0.25:7777has been idle for 30.0 seconds, shutting it down.
[431708.706727] (0,0):o2net_idle_timer:1495 here are some times that might
help debug the situation: (tmr 1302076546.346741 now 1302076576.346061 dr
1302076546.346724 adv 1302076546.346745:1302076546.346746 func
(4a2f0abe:504) 1302076546.346523:1302076546.346530)
[431708.706751] o2net: no longer connected to node kvs2 (num 2) at
192.168.0.25:7777
[431711.700987] o2net: accepted connection from node kvs2 (num 2) at
192.168.0.25:7777
[545691.126992] o2net: connection to node kvs2 (num 2) at
192.168.0.25:7777has been idle for 30.0 seconds, shutting it down.
[545691.127004] (0,0):o2net_idle_timer:1495 here are some times that might
help debug the situation: (tmr 1302190729.946098 now 1302190759.945976 dr
1302190729.946089 adv 1302190729.946098:1302190729.946099 func
(1ad60b89:504) 1302190721.951800:1302190721.951808)
[545691.127042] o2net: no longer connected to node kvs2 (num 2) at
192.168.0.25:7777
[545691.127065] (4807,14):dlm_send_proxy_ast_msg:456 ERROR: status = -112
[545691.127072] (4621,2):dlm_send_proxy_ast_msg:456 ERROR: status = -112
[545691.127075] (4621,2):dlm_flush_asts:599 ERROR: status = -112
[545691.127167] (4807,14):dlm_flush_asts:599 ERROR: status = -112
[545694.118819] o2net: accepted connection from node kvs2 (num 2) at
192.168.0.25:7777
[545876.330611] INFO: task events/0:51 blocked for more than 120 seconds.
[545876.330649] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[545876.330693] events/0      D ffff88033ac0fa20     0    51      2
0x00000000
[545876.330697]  ffffffff814611f0 0000000000000046 0000000000000000
ffffffff811f6e95
[545876.330700]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e581fd8
[545876.330703]  0000000000015780 0000000000015780 ffff88062e578000
ffff88062e5782f8
[545876.330706] Call Trace:
[545876.330714]  [<ffffffff811f6e95>] ? extract_buf+0x91/0x12d
[545876.330718]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[545876.330721]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[545876.330729]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[545876.330732]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[545876.330737]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[545876.330755]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[545876.330758]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[545876.330766]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[545876.330773]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545876.330780]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545876.330787]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[545876.330790]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[545876.330797]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[545876.330800]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[545876.330807]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[545876.330810]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[545876.330812]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[545876.330814]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[545876.330818]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[545876.330820]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[545876.330822]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[545876.330824] INFO: task events/1:52 blocked for more than 120 seconds.
[545876.330852] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[545876.330896] events/1      D 0000000000000000     0    52      2
0x00000000
[545876.330899]  ffff88062e463880 0000000000000046 0000000000000000
0000000000000000
[545876.330901]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e5a3fd8
[545876.330904]  0000000000015780 0000000000015780 ffff88062e578710
ffff88062e578a08
[545876.330906] Call Trace:
[545876.330909]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[545876.330911]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[545876.330914]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[545876.330916]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[545876.330918]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[545876.330925]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[545876.330928]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[545876.330935]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[545876.330942]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545876.330949]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545876.330956]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[545876.330959]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[545876.330966]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[545876.330968]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[545876.330975]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[545876.330977]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[545876.330980]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[545876.330982]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[545876.330984]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[545876.330987]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[545876.330990]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[545996.118082] INFO: task events/0:51 blocked for more than 120 seconds.
[545996.118113] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[545996.118158] events/0      D ffff88033ac0fa20     0    51      2
0x00000000
[545996.118162]  ffffffff814611f0 0000000000000046 0000000000000000
ffffffff811f6e95
[545996.118165]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e581fd8
[545996.118168]  0000000000015780 0000000000015780 ffff88062e578000
ffff88062e5782f8
[545996.118171] Call Trace:
[545996.118179]  [<ffffffff811f6e95>] ? extract_buf+0x91/0x12d
[545996.118183]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[545996.118187]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[545996.118191]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[545996.118193]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[545996.118197]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[545996.118213]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[545996.118216]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[545996.118224]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[545996.118232]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545996.118239]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545996.118247]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[545996.118250]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[545996.118257]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[545996.118261]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[545996.118269]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[545996.118272]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[545996.118274]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[545996.118276]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[545996.118280]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[545996.118282]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[545996.118284]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[545996.118286] INFO: task events/1:52 blocked for more than 120 seconds.
[545996.118314] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[545996.118359] events/1      D 0000000000000000     0    52      2
0x00000000
[545996.118362]  ffff88062e463880 0000000000000046 0000000000000000
0000000000000000
[545996.118365]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e5a3fd8
[545996.118368]  0000000000015780 0000000000015780 ffff88062e578710
ffff88062e578a08
[545996.118370] Call Trace:
[545996.118374]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[545996.118376]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[545996.118379]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[545996.118381]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[545996.118384]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[545996.118392]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[545996.118395]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[545996.118402]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[545996.118409]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545996.118416]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[545996.118425]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[545996.118428]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[545996.118438]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[545996.118441]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[545996.118451]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[545996.118454]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[545996.118458]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[545996.118461]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[545996.118464]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[545996.118467]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[545996.118469]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[546115.905565] INFO: task events/0:51 blocked for more than 120 seconds.
[546115.905596] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[546115.905643] events/0      D ffff88033ac0fa20     0    51      2
0x00000000
[546115.905648]  ffffffff814611f0 0000000000000046 0000000000000000
ffffffff811f6e95
[546115.905651]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e581fd8
[546115.905655]  0000000000015780 0000000000015780 ffff88062e578000
ffff88062e5782f8
[546115.905659] Call Trace:
[546115.905667]  [<ffffffff811f6e95>] ? extract_buf+0x91/0x12d
[546115.905672]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[546115.905675]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[546115.905679]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[546115.905681]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[546115.905685]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[546115.905701]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[546115.905704]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[546115.905711]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[546115.905719]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546115.905726]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546115.905733]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[546115.905736]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[546115.905743]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[546115.905747]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[546115.905754]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[546115.905757]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[546115.905759]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[546115.905761]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[546115.905765]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[546115.905767]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[546115.905769]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[546115.905771] INFO: task events/1:52 blocked for more than 120 seconds.
[546115.905799] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[546115.905843] events/1      D 0000000000000000     0    52      2
0x00000000
[546115.905846]  ffff88062e463880 0000000000000046 0000000000000000
0000000000000000
[546115.905848]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e5a3fd8
[546115.905851]  0000000000015780 0000000000015780 ffff88062e578710
ffff88062e578a08
[546115.905853] Call Trace:
[546115.905856]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[546115.905858]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[546115.905860]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[546115.905862]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[546115.905865]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[546115.905872]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[546115.905875]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[546115.905882]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[546115.905889]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546115.905896]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546115.905903]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[546115.905905]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[546115.905912]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[546115.905915]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[546115.905922]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[546115.905924]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[546115.905927]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[546115.905929]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[546115.905931]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[546115.905933]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[546115.905935]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[546235.692857] INFO: task events/0:51 blocked for more than 120 seconds.
[546235.692890] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[546235.692939] events/0      D ffff88033ac0fa20     0    51      2
0x00000000
[546235.692943]  ffffffff814611f0 0000000000000046 0000000000000000
ffffffff811f6e95
[546235.692946]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e581fd8
[546235.692949]  0000000000015780 0000000000015780 ffff88062e578000
ffff88062e5782f8
[546235.692951] Call Trace:
[546235.692959]  [<ffffffff811f6e95>] ? extract_buf+0x91/0x12d
[546235.692964]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[546235.692967]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[546235.692971]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[546235.692973]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[546235.692977]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[546235.692994]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[546235.692996]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[546235.693004]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[546235.693011]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546235.693018]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546235.693031]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[546235.693034]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[546235.693041]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[546235.693045]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[546235.693052]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[546235.693055]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[546235.693057]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[546235.693059]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[546235.693063]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[546235.693066]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[546235.693070]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[546235.693073] INFO: task events/1:52 blocked for more than 120 seconds.
[546235.693102] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[546235.693147] events/1      D 0000000000000000     0    52      2
0x00000000
[546235.693150]  ffff88062e463880 0000000000000046 0000000000000000
0000000000000000
[546235.693153]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e5a3fd8
[546235.693155]  0000000000015780 0000000000015780 ffff88062e578710
ffff88062e578a08
[546235.693158] Call Trace:
[546235.693160]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[546235.693163]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[546235.693166]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[546235.693168]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[546235.693171]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[546235.693180]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[546235.693183]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[546235.693191]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[546235.693199]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546235.693207]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546235.693216]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[546235.693219]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[546235.693228]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[546235.693231]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[546235.693241]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[546235.693244]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[546235.693247]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[546235.693250]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[546235.693253]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[546235.693255]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[546235.693257]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[546355.480513] INFO: task events/0:51 blocked for more than 120 seconds.
[546355.480543] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[546355.480588] events/0      D ffff88033ac0fa20     0    51      2
0x00000000
[546355.480592]  ffffffff814611f0 0000000000000046 0000000000000000
ffffffff811f6e95
[546355.480596]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e581fd8
[546355.480600]  0000000000015780 0000000000015780 ffff88062e578000
ffff88062e5782f8
[546355.480602] Call Trace:
[546355.480610]  [<ffffffff811f6e95>] ? extract_buf+0x91/0x12d
[546355.480615]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[546355.480618]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[546355.480622]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[546355.480624]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[546355.480628]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[546355.480644]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[546355.480647]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[546355.480654]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[546355.480662]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546355.480669]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546355.480676]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[546355.480679]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[546355.480686]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[546355.480690]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[546355.480697]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[546355.480700]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[546355.480702]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[546355.480704]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[546355.480708]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[546355.480710]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[546355.480712]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[546355.480714] INFO: task events/1:52 blocked for more than 120 seconds.
[546355.480742] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[546355.480786] events/1      D 0000000000000000     0    52      2
0x00000000
[546355.480789]  ffff88062e463880 0000000000000046 0000000000000000
0000000000000000
[546355.480792]  0000000000000000 0000000000000000 000000000000f9e0
ffff88062e5a3fd8
[546355.480794]  0000000000015780 0000000000015780 ffff88062e578710
ffff88062e578a08
[546355.480797] Call Trace:
[546355.480799]  [<ffffffff812fabfc>] ? schedule_timeout+0x2e/0xdd
[546355.480801]  [<ffffffff811971bb>] ? __bitmap_weight+0x3a/0x7e
[546355.480804]  [<ffffffff8103a6e1>] ? scale_rt_power+0x1f/0x65
[546355.480806]  [<ffffffff812faab5>] ? wait_for_common+0xde/0x15b
[546355.480808]  [<ffffffff8104a274>] ? default_wake_function+0x0/0x9
[546355.480816]  [<ffffffffa0331c7a>] ? __ocfs2_cluster_lock+0x8a4/0x8c5
[ocfs2]
[546355.480818]  [<ffffffff812fa83f>] ? thread_return+0x79/0xe0
[546355.480825]  [<ffffffffa0331cb0>] ? ocfs2_cluster_lock+0x15/0x17 [ocfs2]
[546355.480832]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546355.480840]  [<ffffffffa033344a>] ? ocfs2_orphan_scan_lock+0x5d/0xa8
[ocfs2]
[546355.480850]  [<ffffffffa0344a96>] ? ocfs2_queue_orphan_scan+0x29/0x126
[ocfs2]
[546355.480853]  [<ffffffff812fb175>] ? mutex_lock+0xd/0x31
[546355.480863]  [<ffffffffa0344bb8>] ? ocfs2_orphan_scan_work+0x25/0x4d
[ocfs2]
[546355.480870]  [<ffffffff810616ff>] ? worker_thread+0x188/0x21d
[546355.480880]  [<ffffffffa0344b93>] ? ocfs2_orphan_scan_work+0x0/0x4d
[ocfs2]
[546355.480883]  [<ffffffff81064d2a>] ? autoremove_wake_function+0x0/0x2e
[546355.480887]  [<ffffffff81061577>] ? worker_thread+0x0/0x21d
[546355.480889]  [<ffffffff81064a5d>] ? kthread+0x79/0x81
[546355.480892]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[546355.480894]  [<ffffffff810649e4>] ? kthread+0x0/0x81
[546355.480896]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20


I can't access to the server. Not graphical or ssh access is possible.. But
I can execute remote commands via ssh:
server1# ssh root at server2 'dmesg'

I try to umount ocfs2 mounted devices but it was not possible.

Remote reboot started but didn't finished.

Is there any option?

-- 
Xavier Diumé
http://socaqui.cat
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