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[Bug 1269086] Re: RAID1 installations fail to complete on trusty server images with 3.13

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Parameswaran Sivatharman <para.siva@xxxxxxxxxxxxx>
Date: Wed, 15 Jan 2014 16:59:00 -0000
Reply-to: Bug 1269086 <1269086@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Just to confirm, this is still occurring with 3.13.0-3-generic (with
20140115 images).

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https://bugs.launchpad.net/bugs/1269086

Title:
  RAID1 installations fail to complete on trusty server images with 3.13

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Starting from 20140109, with 3.13.0-1-generic kernel onwards trusty-
  server installations with RAID1 configuration fail to complete the
  installations. This occurs with both amd64 and i386 images.

  The following stack trace is found in the installer syslog:
  Jan 14 10:08:20 net/hw-detect.hotplug: Detected hotpluggable network interface lo
  Jan 14 10:11:52 kernel: [ 1680.528225] INFO: task md0_resync:16918 blocked for more than 120 seconds.
  Jan 14 10:11:52 kernel: [ 1680.528236]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:11:52 kernel: [ 1680.528239] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:11:52 kernel: [ 1680.528242] md0_resync      D ffff88001f414440     0 16918      2 0x00000000
  Jan 14 10:11:52 kernel: [ 1680.528251]  ffff880013b23bf8 0000000000000006 ffff880013559800 ffff880013b23fd8
  Jan 14 10:11:52 kernel: [ 1680.528257]  0000000000014440 0000000000014440 ffff880013559800 ffff88000ce5ce80
  Jan 14 10:11:52 kernel: [ 1680.528262]  ffff88001351deb8 ffff880013b23c70 ffff88001351dea0 ffff88001351de40
  Jan 14 10:11:52 kernel: [ 1680.528267] Call Trace:
  Jan 14 10:11:52 kernel: [ 1680.528287]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:11:52 kernel: [ 1680.528297]  [<ffffffffa0142457>] sync_request+0x227/0xb30 [raid1]
  Jan 14 10:11:52 kernel: [ 1680.528310]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:11:52 kernel: [ 1680.528320]  [<ffffffff815942a3>] md_do_sync+0x993/0xdc0
  Jan 14 10:11:52 kernel: [ 1680.528330]  [<ffffffff8104f3ff>] ? kvm_clock_read+0x1f/0x30
  Jan 14 10:11:52 kernel: [ 1680.528340]  [<ffffffff8101b809>] ? sched_clock+0x9/0x10
  Jan 14 10:11:52 kernel: [ 1680.528348]  [<ffffffff8109a40d>] ? sched_clock_local+0x1d/0x80
  Jan 14 10:11:52 kernel: [ 1680.528355]  [<ffffffff81590e48>] md_thread+0x118/0x130
  Jan 14 10:11:52 kernel: [ 1680.528360]  [<ffffffff81590d30>] ? mddev_unlock+0xe0/0xe0
  Jan 14 10:11:52 kernel: [ 1680.528367]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:11:52 kernel: [ 1680.528372]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:11:52 kernel: [ 1680.528382]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:11:52 kernel: [ 1680.528387]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:11:52 kernel: [ 1680.528393] INFO: task jbd2/md0-8:20260 blocked for more than 120 seconds.
  Jan 14 10:11:52 kernel: [ 1680.528396]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:11:52 kernel: [ 1680.528398] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:11:52 kernel: [ 1680.528400] jbd2/md0-8      D ffff88001f414440     0 20260      2 0x00000000
  Jan 14 10:11:52 kernel: [ 1680.528406]  ffff88001fbf5888 0000000000000002 ffff88001c053000 ffff88001fbf5fd8
  Jan 14 10:11:52 kernel: [ 1680.528411]  0000000000014440 0000000000014440 ffff88001c053000 ffff88001351de40
  Jan 14 10:11:52 kernel: [ 1680.528415]  ffff88001351deb8 ffff88001351dea0 ffff88001c053000 ffff88001c22f180
  Jan 14 10:11:52 kernel: [ 1680.528420] Call Trace:
  Jan 14 10:11:52 kernel: [ 1680.528426]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:11:52 kernel: [ 1680.528432]  [<ffffffffa014076c>] wait_barrier+0x13c/0x2a0 [raid1]
  Jan 14 10:11:52 kernel: [ 1680.528438]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:11:52 kernel: [ 1680.528444]  [<ffffffffa014158f>] make_request+0x7f/0xd20 [raid1]
  Jan 14 10:11:52 kernel: [ 1680.528456]  [<ffffffff814155d8>] ? virtqueue_add_sgs+0x458/0x590
  Jan 14 10:11:52 kernel: [ 1680.528467]  [<ffffffff8114e3a5>] ? mempool_alloc_slab+0x15/0x20
  Jan 14 10:11:52 kernel: [ 1680.528473]  [<ffffffff8158dd25>] md_make_request+0xd5/0x220
  Jan 14 10:11:52 kernel: [ 1680.528481]  [<ffffffff8132c062>] generic_make_request+0xc2/0x110
  Jan 14 10:11:52 kernel: [ 1680.528486]  [<ffffffff8132c121>] submit_bio+0x71/0x150
  Jan 14 10:11:52 kernel: [ 1680.528495]  [<ffffffff8124099e>] ? ext4_bio_write_page+0x12e/0x2d0
  Jan 14 10:11:52 kernel: [ 1680.528500]  [<ffffffff81240815>] ext4_io_submit+0x25/0x50
  Jan 14 10:11:52 kernel: [ 1680.528506]  [<ffffffff8123bd83>] ext4_writepage+0xc3/0x440
  Jan 14 10:11:52 kernel: [ 1680.528511]  [<ffffffff8114c151>] ? find_get_pages_tag+0xd1/0x180
  Jan 14 10:11:52 kernel: [ 1680.528517]  [<ffffffff811553e3>] __writepage+0x13/0x40
  Jan 14 10:11:52 kernel: [ 1680.528522]  [<ffffffff81155d5d>] write_cache_pages+0x23d/0x4b0
  Jan 14 10:11:52 kernel: [ 1680.528527]  [<ffffffff811553d0>] ? global_dirtyable_memory+0x40/0x40
  Jan 14 10:11:52 kernel: [ 1680.528533]  [<ffffffff8132fa29>] ? blk_flush_plug_list+0xd9/0x230
  Jan 14 10:11:52 kernel: [ 1680.528538]  [<ffffffff81156010>] generic_writepages+0x40/0x60
  Jan 14 10:11:52 kernel: [ 1680.528548]  [<ffffffff812818f3>] jbd2_journal_commit_transaction+0x4f3/0x1aa0
  Jan 14 10:11:52 kernel: [ 1680.528554]  [<ffffffff8109a598>] ? sched_clock_cpu+0xa8/0x100
  Jan 14 10:11:52 kernel: [ 1680.528560]  [<ffffffff81094668>] ? finish_task_switch+0x128/0x170
  Jan 14 10:11:52 kernel: [ 1680.528568]  [<ffffffff810723ef>] ? try_to_del_timer_sync+0x4f/0x70
  Jan 14 10:11:52 kernel: [ 1680.528574]  [<ffffffff81286efd>] kjournald2+0xbd/0x250
  Jan 14 10:11:52 kernel: [ 1680.528579]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:11:52 kernel: [ 1680.528584]  [<ffffffff81286e40>] ? commit_timeout+0x10/0x10
  Jan 14 10:11:52 kernel: [ 1680.528589]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:11:52 kernel: [ 1680.528594]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:11:52 kernel: [ 1680.528599]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:11:52 kernel: [ 1680.528604]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:11:52 kernel: [ 1680.528610] INFO: task kworker/u2:2:6372 blocked for more than 120 seconds.
  Jan 14 10:11:52 kernel: [ 1680.528613]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:11:52 kernel: [ 1680.528615] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:11:52 kernel: [ 1680.528617] kworker/u2:2    D ffff88001f414440     0  6372      2 0x00000000
  Jan 14 10:11:52 kernel: [ 1680.528631] Workqueue: writeback bdi_writeback_workfn (flush-9:0)
  Jan 14 10:11:52 kernel: [ 1680.528635]  ffff880007101878 0000000000000002 ffff88000013c800 ffff880007101fd8
  Jan 14 10:11:52 kernel: [ 1680.528640]  0000000000014440 0000000000014440 ffff88000013c800 ffff88001351de40
  Jan 14 10:11:52 kernel: [ 1680.528644]  ffff88001351deb8 ffff88001351dea0 ffff88000013c800 ffff8800045b6840
  Jan 14 10:11:52 kernel: [ 1680.528649] Call Trace:
  Jan 14 10:11:52 kernel: [ 1680.528655]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:11:52 kernel: [ 1680.528661]  [<ffffffffa014076c>] wait_barrier+0x13c/0x2a0 [raid1]
  Jan 14 10:11:52 kernel: [ 1680.528666]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:11:52 kernel: [ 1680.528672]  [<ffffffffa014158f>] make_request+0x7f/0xd20 [raid1]
  Jan 14 10:11:52 kernel: [ 1680.528678]  [<ffffffff8114bd93>] ? unlock_page+0x23/0x30
  Jan 14 10:11:52 kernel: [ 1680.528684]  [<ffffffff811589b0>] ? release_pages+0x80/0x210
  Jan 14 10:11:52 kernel: [ 1680.528689]  [<ffffffff8158dd25>] md_make_request+0xd5/0x220
  Jan 14 10:11:52 kernel: [ 1680.528694]  [<ffffffff8132c062>] generic_make_request+0xc2/0x110
  Jan 14 10:11:52 kernel: [ 1680.528698]  [<ffffffff8132c121>] submit_bio+0x71/0x150
  Jan 14 10:11:52 kernel: [ 1680.528703]  [<ffffffff81240815>] ext4_io_submit+0x25/0x50
  Jan 14 10:11:52 kernel: [ 1680.528708]  [<ffffffff8123cfa3>] ext4_writepages+0x503/0xcc0
  Jan 14 10:11:52 kernel: [ 1680.528714]  [<ffffffff8115601b>] ? generic_writepages+0x4b/0x60
  Jan 14 10:11:52 kernel: [ 1680.528720]  [<ffffffff811571be>] do_writepages+0x1e/0x40
  Jan 14 10:11:52 kernel: [ 1680.528726]  [<ffffffff811e07f0>] __writeback_single_inode+0x40/0x220
  Jan 14 10:11:52 kernel: [ 1680.528732]  [<ffffffff811e1097>] writeback_sb_inodes+0x247/0x3e0
  Jan 14 10:11:52 kernel: [ 1680.528737]  [<ffffffff811e12cf>] __writeback_inodes_wb+0x9f/0xd0
  Jan 14 10:11:52 kernel: [ 1680.528743]  [<ffffffff811e17c3>] wb_writeback+0x243/0x2c0
  Jan 14 10:11:52 kernel: [ 1680.528748]  [<ffffffff811565b7>] ? global_dirty_limits+0x37/0x160
  Jan 14 10:11:52 kernel: [ 1680.528753]  [<ffffffff811e3329>] bdi_writeback_workfn+0x1b9/0x430
  Jan 14 10:11:52 kernel: [ 1680.528762]  [<ffffffff81080822>] process_one_work+0x182/0x450
  Jan 14 10:11:52 kernel: [ 1680.528768]  [<ffffffff810815c1>] worker_thread+0x121/0x410
  Jan 14 10:11:52 kernel: [ 1680.528773]  [<ffffffff810814a0>] ? rescuer_thread+0x3e0/0x3e0
  Jan 14 10:11:52 kernel: [ 1680.528777]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:11:52 kernel: [ 1680.528782]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:11:52 kernel: [ 1680.528788]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:11:52 kernel: [ 1680.528792]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:11:52 kernel: [ 1680.528797] INFO: task ldconfig.real:31015 blocked for more than 120 seconds.
  Jan 14 10:11:52 kernel: [ 1680.528800]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:11:52 kernel: [ 1680.528802] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:11:52 kernel: [ 1680.528805] ldconfig.real   D ffff88001f414440     0 31015  25517 0x00400000
  Jan 14 10:11:52 kernel: [ 1680.528810]  ffff88000adf1e50 0000000000000002 ffff88001df46000 ffff88000adf1fd8
  Jan 14 10:11:52 kernel: [ 1680.528815]  0000000000014440 0000000000014440 ffff88001df46000 ffff880013042000
  Jan 14 10:11:52 kernel: [ 1680.528820]  000000000000286f ffff880013042088 ffff880013042024 ffff88000adf1e90
  Jan 14 10:11:52 kernel: [ 1680.528825] Call Trace:
  Jan 14 10:11:52 kernel: [ 1680.528830]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:11:52 kernel: [ 1680.528836]  [<ffffffff81286925>] jbd2_log_wait_commit+0x95/0x100
  Jan 14 10:11:52 kernel: [ 1680.528841]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:11:52 kernel: [ 1680.528847]  [<ffffffff81288ee3>] jbd2_complete_transaction+0x53/0xa0
  Jan 14 10:11:52 kernel: [ 1680.528852]  [<ffffffff81234b22>] ext4_sync_file+0x292/0x320
  Jan 14 10:11:52 kernel: [ 1680.528858]  [<ffffffff811e6ef1>] do_fsync+0x51/0x80
  Jan 14 10:11:52 kernel: [ 1680.528862]  [<ffffffff811e71b0>] SyS_fsync+0x10/0x20
  Jan 14 10:11:52 kernel: [ 1680.528868]  [<ffffffff81715b3f>] tracesys+0xe1/0xe6
  Jan 14 10:13:52 kernel: [ 1800.528208] INFO: task md0_resync:16918 blocked for more than 120 seconds.
  Jan 14 10:13:52 kernel: [ 1800.528217]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:13:52 kernel: [ 1800.528218] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:13:52 kernel: [ 1800.528220] md0_resync      D ffff88001f414440     0 16918      2 0x00000000
  Jan 14 10:13:52 kernel: [ 1800.528226]  ffff880013b23bf8 0000000000000006 ffff880013559800 ffff880013b23fd8
  Jan 14 10:13:52 kernel: [ 1800.528229]  0000000000014440 0000000000014440 ffff880013559800 ffff88000ce5ce80
  Jan 14 10:13:52 kernel: [ 1800.528232]  ffff88001351deb8 ffff880013b23c70 ffff88001351dea0 ffff88001351de40
  Jan 14 10:13:52 kernel: [ 1800.528235] Call Trace:
  Jan 14 10:13:52 kernel: [ 1800.528251]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:13:52 kernel: [ 1800.528258]  [<ffffffffa0142457>] sync_request+0x227/0xb30 [raid1]
  Jan 14 10:13:52 kernel: [ 1800.528268]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:13:52 kernel: [ 1800.528275]  [<ffffffff815942a3>] md_do_sync+0x993/0xdc0
  Jan 14 10:13:52 kernel: [ 1800.528282]  [<ffffffff8104f3ff>] ? kvm_clock_read+0x1f/0x30
  Jan 14 10:13:52 kernel: [ 1800.528289]  [<ffffffff8101b809>] ? sched_clock+0x9/0x10
  Jan 14 10:13:52 kernel: [ 1800.528295]  [<ffffffff8109a40d>] ? sched_clock_local+0x1d/0x80
  Jan 14 10:13:52 kernel: [ 1800.528298]  [<ffffffff81590e48>] md_thread+0x118/0x130
  Jan 14 10:13:52 kernel: [ 1800.528301]  [<ffffffff81590d30>] ? mddev_unlock+0xe0/0xe0
  Jan 14 10:13:52 kernel: [ 1800.528305]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:13:52 kernel: [ 1800.528307]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:13:52 kernel: [ 1800.528315]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:13:52 kernel: [ 1800.528317]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:13:52 kernel: [ 1800.528321] INFO: task jbd2/md0-8:20260 blocked for more than 120 seconds.
  Jan 14 10:13:52 kernel: [ 1800.528322]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:13:52 kernel: [ 1800.528323] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:13:52 kernel: [ 1800.528324] jbd2/md0-8      D ffff88001f414440     0 20260      2 0x00000000
  Jan 14 10:13:52 kernel: [ 1800.528327]  ffff88001fbf5888 0000000000000002 ffff88001c053000 ffff88001fbf5fd8
  Jan 14 10:13:52 kernel: [ 1800.528329]  0000000000014440 0000000000014440 ffff88001c053000 ffff88001351de40
  Jan 14 10:13:52 kernel: [ 1800.528332]  ffff88001351deb8 ffff88001351dea0 ffff88001c053000 ffff88001c22f180
  Jan 14 10:13:52 kernel: [ 1800.528334] Call Trace:
  Jan 14 10:13:52 kernel: [ 1800.528337]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:13:52 kernel: [ 1800.528339]  [<ffffffffa014076c>] wait_barrier+0x13c/0x2a0 [raid1]
  Jan 14 10:13:52 kernel: [ 1800.528342]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:13:52 kernel: [ 1800.528345]  [<ffffffffa014158f>] make_request+0x7f/0xd20 [raid1]
  Jan 14 10:13:52 kernel: [ 1800.528354]  [<ffffffff814155d8>] ? virtqueue_add_sgs+0x458/0x590
  Jan 14 10:13:52 kernel: [ 1800.528363]  [<ffffffff8114e3a5>] ? mempool_alloc_slab+0x15/0x20
  Jan 14 10:13:52 kernel: [ 1800.528366]  [<ffffffff8158dd25>] md_make_request+0xd5/0x220
  Jan 14 10:13:52 kernel: [ 1800.528371]  [<ffffffff8132c062>] generic_make_request+0xc2/0x110
  Jan 14 10:13:52 kernel: [ 1800.528374]  [<ffffffff8132c121>] submit_bio+0x71/0x150
  Jan 14 10:13:52 kernel: [ 1800.528380]  [<ffffffff8124099e>] ? ext4_bio_write_page+0x12e/0x2d0
  Jan 14 10:13:52 kernel: [ 1800.528383]  [<ffffffff81240815>] ext4_io_submit+0x25/0x50
  Jan 14 10:13:52 kernel: [ 1800.528385]  [<ffffffff8123bd83>] ext4_writepage+0xc3/0x440
  Jan 14 10:13:52 kernel: [ 1800.528388]  [<ffffffff8114c151>] ? find_get_pages_tag+0xd1/0x180
  Jan 14 10:13:52 kernel: [ 1800.528392]  [<ffffffff811553e3>] __writepage+0x13/0x40
  Jan 14 10:13:52 kernel: [ 1800.528394]  [<ffffffff81155d5d>] write_cache_pages+0x23d/0x4b0
  Jan 14 10:13:52 kernel: [ 1800.528396]  [<ffffffff811553d0>] ? global_dirtyable_memory+0x40/0x40
  Jan 14 10:13:52 kernel: [ 1800.528399]  [<ffffffff8132fa29>] ? blk_flush_plug_list+0xd9/0x230
  Jan 14 10:13:52 kernel: [ 1800.528402]  [<ffffffff81156010>] generic_writepages+0x40/0x60
  Jan 14 10:13:52 kernel: [ 1800.528408]  [<ffffffff812818f3>] jbd2_journal_commit_transaction+0x4f3/0x1aa0
  Jan 14 10:13:52 kernel: [ 1800.528411]  [<ffffffff8109a598>] ? sched_clock_cpu+0xa8/0x100
  Jan 14 10:13:52 kernel: [ 1800.528414]  [<ffffffff81094668>] ? finish_task_switch+0x128/0x170
  Jan 14 10:13:52 kernel: [ 1800.528419]  [<ffffffff810723ef>] ? try_to_del_timer_sync+0x4f/0x70
  Jan 14 10:13:52 kernel: [ 1800.528423]  [<ffffffff81286efd>] kjournald2+0xbd/0x250
  Jan 14 10:13:52 kernel: [ 1800.528426]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:13:52 kernel: [ 1800.528428]  [<ffffffff81286e40>] ? commit_timeout+0x10/0x10
  Jan 14 10:13:52 kernel: [ 1800.528430]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:13:52 kernel: [ 1800.528432]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:13:52 kernel: [ 1800.528435]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:13:52 kernel: [ 1800.528437]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:13:52 kernel: [ 1800.528441] INFO: task kworker/u2:2:6372 blocked for more than 120 seconds.
  Jan 14 10:13:52 kernel: [ 1800.528443]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:13:52 kernel: [ 1800.528444] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:13:52 kernel: [ 1800.528445] kworker/u2:2    D ffff88001f414440     0  6372      2 0x00000000
  Jan 14 10:13:52 kernel: [ 1800.528455] Workqueue: writeback bdi_writeback_workfn (flush-9:0)
  Jan 14 10:13:52 kernel: [ 1800.528457]  ffff880007101878 0000000000000002 ffff88000013c800 ffff880007101fd8
  Jan 14 10:13:52 kernel: [ 1800.528460]  0000000000014440 0000000000014440 ffff88000013c800 ffff88001351de40
  Jan 14 10:13:52 kernel: [ 1800.528462]  ffff88001351deb8 ffff88001351dea0 ffff88000013c800 ffff8800045b6840
  Jan 14 10:13:52 kernel: [ 1800.528464] Call Trace:
  Jan 14 10:13:52 kernel: [ 1800.528467]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:13:52 kernel: [ 1800.528470]  [<ffffffffa014076c>] wait_barrier+0x13c/0x2a0 [raid1]
  Jan 14 10:13:52 kernel: [ 1800.528472]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:13:52 kernel: [ 1800.528475]  [<ffffffffa014158f>] make_request+0x7f/0xd20 [raid1]
  Jan 14 10:13:52 kernel: [ 1800.528478]  [<ffffffff8114bd93>] ? unlock_page+0x23/0x30
  Jan 14 10:13:52 kernel: [ 1800.528481]  [<ffffffff811589b0>] ? release_pages+0x80/0x210
  Jan 14 10:13:52 kernel: [ 1800.528484]  [<ffffffff8158dd25>] md_make_request+0xd5/0x220
  Jan 14 10:13:52 kernel: [ 1800.528486]  [<ffffffff8132c062>] generic_make_request+0xc2/0x110
  Jan 14 10:13:52 kernel: [ 1800.528488]  [<ffffffff8132c121>] submit_bio+0x71/0x150
  Jan 14 10:13:52 kernel: [ 1800.528491]  [<ffffffff81240815>] ext4_io_submit+0x25/0x50
  Jan 14 10:13:52 kernel: [ 1800.528493]  [<ffffffff8123cfa3>] ext4_writepages+0x503/0xcc0
  Jan 14 10:13:52 kernel: [ 1800.528496]  [<ffffffff8115601b>] ? generic_writepages+0x4b/0x60
  Jan 14 10:13:52 kernel: [ 1800.528499]  [<ffffffff811571be>] do_writepages+0x1e/0x40
  Jan 14 10:13:52 kernel: [ 1800.528502]  [<ffffffff811e07f0>] __writeback_single_inode+0x40/0x220
  Jan 14 10:13:52 kernel: [ 1800.528505]  [<ffffffff811e1097>] writeback_sb_inodes+0x247/0x3e0
  Jan 14 10:13:52 kernel: [ 1800.528507]  [<ffffffff811e12cf>] __writeback_inodes_wb+0x9f/0xd0
  Jan 14 10:13:52 kernel: [ 1800.528510]  [<ffffffff811e17c3>] wb_writeback+0x243/0x2c0
  Jan 14 10:13:52 kernel: [ 1800.528512]  [<ffffffff811565b7>] ? global_dirty_limits+0x37/0x160
  Jan 14 10:13:52 kernel: [ 1800.528515]  [<ffffffff811e3329>] bdi_writeback_workfn+0x1b9/0x430
  Jan 14 10:13:52 kernel: [ 1800.528521]  [<ffffffff81080822>] process_one_work+0x182/0x450
  Jan 14 10:13:52 kernel: [ 1800.528524]  [<ffffffff810815c1>] worker_thread+0x121/0x410
  Jan 14 10:13:52 kernel: [ 1800.528526]  [<ffffffff810814a0>] ? rescuer_thread+0x3e0/0x3e0
  Jan 14 10:13:52 kernel: [ 1800.528528]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:13:52 kernel: [ 1800.528531]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:13:52 kernel: [ 1800.528533]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:13:52 kernel: [ 1800.528536]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:13:52 kernel: [ 1800.528538] INFO: task ldconfig.real:31015 blocked for more than 120 seconds.
  Jan 14 10:13:52 kernel: [ 1800.528540]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:13:52 kernel: [ 1800.528541] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:13:52 kernel: [ 1800.528542] ldconfig.real   D ffff88001f414440     0 31015  25517 0x00400000
  Jan 14 10:13:52 kernel: [ 1800.528545]  ffff88000adf1e50 0000000000000002 ffff88001df46000 ffff88000adf1fd8
  Jan 14 10:13:52 kernel: [ 1800.528548]  0000000000014440 0000000000014440 ffff88001df46000 ffff880013042000
  Jan 14 10:13:52 kernel: [ 1800.528550]  000000000000286f ffff880013042088 ffff880013042024 ffff88000adf1e90
  Jan 14 10:13:52 kernel: [ 1800.528552] Call Trace:
  Jan 14 10:13:52 kernel: [ 1800.528555]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:13:52 kernel: [ 1800.528557]  [<ffffffff81286925>] jbd2_log_wait_commit+0x95/0x100
  Jan 14 10:13:52 kernel: [ 1800.528560]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:13:52 kernel: [ 1800.528563]  [<ffffffff81288ee3>] jbd2_complete_transaction+0x53/0xa0
  Jan 14 10:13:52 kernel: [ 1800.528566]  [<ffffffff81234b22>] ext4_sync_file+0x292/0x320
  Jan 14 10:13:52 kernel: [ 1800.528569]  [<ffffffff811e6ef1>] do_fsync+0x51/0x80
  Jan 14 10:13:52 kernel: [ 1800.528571]  [<ffffffff811e71b0>] SyS_fsync+0x10/0x20
  Jan 14 10:13:52 kernel: [ 1800.528574]  [<ffffffff81715b3f>] tracesys+0xe1/0xe6
  Jan 14 10:15:52 kernel: [ 1920.528168] INFO: task md0_resync:16918 blocked for more than 120 seconds.
  Jan 14 10:15:52 kernel: [ 1920.528177]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:15:52 kernel: [ 1920.528178] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:15:52 kernel: [ 1920.528180] md0_resync      D ffff88001f414440     0 16918      2 0x00000000
  Jan 14 10:15:52 kernel: [ 1920.528185]  ffff880013b23bf8 0000000000000006 ffff880013559800 ffff880013b23fd8
  Jan 14 10:15:52 kernel: [ 1920.528188]  0000000000014440 0000000000014440 ffff880013559800 ffff88000ce5ce80
  Jan 14 10:15:52 kernel: [ 1920.528191]  ffff88001351deb8 ffff880013b23c70 ffff88001351dea0 ffff88001351de40
  Jan 14 10:15:52 kernel: [ 1920.528194] Call Trace:
  Jan 14 10:15:52 kernel: [ 1920.528209]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:15:52 kernel: [ 1920.528216]  [<ffffffffa0142457>] sync_request+0x227/0xb30 [raid1]
  Jan 14 10:15:52 kernel: [ 1920.528226]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:15:52 kernel: [ 1920.528233]  [<ffffffff815942a3>] md_do_sync+0x993/0xdc0
  Jan 14 10:15:52 kernel: [ 1920.528309]  [<ffffffff8104f3ff>] ? kvm_clock_read+0x1f/0x30
  Jan 14 10:15:52 kernel: [ 1920.528319]  [<ffffffff8101b809>] ? sched_clock+0x9/0x10
  Jan 14 10:15:52 kernel: [ 1920.528326]  [<ffffffff8109a40d>] ? sched_clock_local+0x1d/0x80
  Jan 14 10:15:52 kernel: [ 1920.528331]  [<ffffffff81590e48>] md_thread+0x118/0x130
  Jan 14 10:15:52 kernel: [ 1920.528334]  [<ffffffff81590d30>] ? mddev_unlock+0xe0/0xe0
  Jan 14 10:15:52 kernel: [ 1920.528339]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:15:52 kernel: [ 1920.528342]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:15:52 kernel: [ 1920.528350]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:15:52 kernel: [ 1920.528354]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:15:52 kernel: [ 1920.528359] INFO: task jbd2/md0-8:20260 blocked for more than 120 seconds.
  Jan 14 10:15:52 kernel: [ 1920.528361]       Tainted: GF            3.13.0-2-generic #17-Ubuntu
  Jan 14 10:15:52 kernel: [ 1920.528362] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Jan 14 10:15:52 kernel: [ 1920.528364] jbd2/md0-8      D ffff88001f414440     0 20260      2 0x00000000
  Jan 14 10:15:52 kernel: [ 1920.528368]  ffff88001fbf5888 0000000000000002 ffff88001c053000 ffff88001fbf5fd8
  Jan 14 10:15:52 kernel: [ 1920.528372]  0000000000014440 0000000000014440 ffff88001c053000 ffff88001351de40
  Jan 14 10:15:52 kernel: [ 1920.528375]  ffff88001351deb8 ffff88001351dea0 ffff88001c053000 ffff88001c22f180
  Jan 14 10:15:52 kernel: [ 1920.528379] Call Trace:
  Jan 14 10:15:52 kernel: [ 1920.528383]  [<ffffffff81709379>] schedule+0x29/0x70
  Jan 14 10:15:52 kernel: [ 1920.528387]  [<ffffffffa014076c>] wait_barrier+0x13c/0x2a0 [raid1]
  Jan 14 10:15:52 kernel: [ 1920.528391]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:15:52 kernel: [ 1920.528396]  [<ffffffffa014158f>] make_request+0x7f/0xd20 [raid1]
  Jan 14 10:15:52 kernel: [ 1920.528406]  [<ffffffff814155d8>] ? virtqueue_add_sgs+0x458/0x590
  Jan 14 10:15:52 kernel: [ 1920.528416]  [<ffffffff8114e3a5>] ? mempool_alloc_slab+0x15/0x20
  Jan 14 10:15:52 kernel: [ 1920.528421]  [<ffffffff8158dd25>] md_make_request+0xd5/0x220
  Jan 14 10:15:52 kernel: [ 1920.528427]  [<ffffffff8132c062>] generic_make_request+0xc2/0x110
  Jan 14 10:15:52 kernel: [ 1920.528431]  [<ffffffff8132c121>] submit_bio+0x71/0x150
  Jan 14 10:15:52 kernel: [ 1920.528438]  [<ffffffff8124099e>] ? ext4_bio_write_page+0x12e/0x2d0
  Jan 14 10:15:52 kernel: [ 1920.528444]  [<ffffffff81240815>] ext4_io_submit+0x25/0x50
  Jan 14 10:15:52 kernel: [ 1920.528447]  [<ffffffff8123bd83>] ext4_writepage+0xc3/0x440
  Jan 14 10:15:52 kernel: [ 1920.528450]  [<ffffffff8114c151>] ? find_get_pages_tag+0xd1/0x180
  Jan 14 10:15:52 kernel: [ 1920.528454]  [<ffffffff811553e3>] __writepage+0x13/0x40
  Jan 14 10:15:52 kernel: [ 1920.528457]  [<ffffffff81155d5d>] write_cache_pages+0x23d/0x4b0
  Jan 14 10:15:52 kernel: [ 1920.528459]  [<ffffffff811553d0>] ? global_dirtyable_memory+0x40/0x40
  Jan 14 10:15:52 kernel: [ 1920.528464]  [<ffffffff8132fa29>] ? blk_flush_plug_list+0xd9/0x230
  Jan 14 10:15:52 kernel: [ 1920.528466]  [<ffffffff81156010>] generic_writepages+0x40/0x60
  Jan 14 10:15:52 kernel: [ 1920.528473]  [<ffffffff812818f3>] jbd2_journal_commit_transaction+0x4f3/0x1aa0
  Jan 14 10:15:52 kernel: [ 1920.528476]  [<ffffffff8109a598>] ? sched_clock_cpu+0xa8/0x100
  Jan 14 10:15:52 kernel: [ 1920.528479]  [<ffffffff81094668>] ? finish_task_switch+0x128/0x170
  Jan 14 10:15:52 kernel: [ 1920.528484]  [<ffffffff810723ef>] ? try_to_del_timer_sync+0x4f/0x70
  Jan 14 10:15:52 kernel: [ 1920.528489]  [<ffffffff81286efd>] kjournald2+0xbd/0x250
  Jan 14 10:15:52 kernel: [ 1920.528492]  [<ffffffff810a8a20>] ? prepare_to_wait_event+0x100/0x100
  Jan 14 10:15:52 kernel: [ 1920.528494]  [<ffffffff81286e40>] ? commit_timeout+0x10/0x10
  Jan 14 10:15:52 kernel: [ 1920.528496]  [<ffffffff81088212>] kthread+0xd2/0xf0
  Jan 14 10:15:52 kernel: [ 1920.528499]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190
  Jan 14 10:15:52 kernel: [ 1920.528501]  [<ffffffff8171587c>] ret_from_fork+0x7c/0xb0
  Jan 14 10:15:52 kernel: [ 1920.528503]  [<ffffffff81088140>] ? kthread_create_on_node+0x190/0x190

  
  Steps  to reproduce:
  1.Install a trusty server with the images of 20140114 using the preseed given in:
  http://bazaar.launchpad.net/~ubuntu-server-dev/ubuntu-test-cases/server-tests-raring/view/head:/preseeds/raid1.preseed
  2. It could be noticed that the installation does not complete.

  
  The impacted jobs are:
  https://jenkins.qa.ubuntu.com/view/Trusty/view/Smoke%20Testing/job/trusty-server-amd64-smoke-raid1/72/consoleText
  and
  https://jenkins.qa.ubuntu.com/view/Trusty/view/Smoke%20Testing/job/trusty-server-i386-smoke-raid1/73/consoleText

To manage notifications about this bug go to:
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References

[Bug 1269086] [NEW] RAID1 installations fail to complete on trusty server images with 3.13
From: Parameswaran Sivatharman, 2014-01-14