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[dm-devel] 2.6.32.28 - md resync + pvmove - crash



Hi,
first, I'm sorry for crossposting and also CCing stable@, if that's not OK, please let me knows.
Anyways, we've experienced hang of system running 2.6.32.28.
After upgrading to 2.6.32 and replacing failed disk, md resync has started. Then when the technician started pvmove, dome deadlock must have occured, because all disk requests started to hang and the whole system had to be rebooted...

here's the backtrace:

[ 1229.645028] alg: No test for stdrng (krng)
[ 1229.668172] alg: No test for authenc(hmac(sha1),cbc(des3_ede)) (authenc(hmac(sha1-generic),cbc(des3_ede-generic)))
[ 1531.585167] md: bind<sda2>
[ 1531.927846] raid1: raid set md2 active with 1 out of 2 mirrors
[ 1531.934613] md2: detected capacity change from 0 to 2000133029888
[ 1549.850444] md1: bitmap file is out of date (0 < 439231) -- forcing full recovery
[ 1549.858719] md1: bitmap file is out of date, doing full recovery
[ 1550.068105] md1: bitmap initialized from disk: read 11/11 pages, set 357576 bits
[ 1550.076054] created bitmap (175 pages) for device md1
[ 1561.449841]  md2: unknown partition table
[ 1561.501645] md2: bitmap file is out of date (0 < 4) -- forcing full recovery
[ 1561.509999] md2: bitmap file is out of date, doing full recovery
[ 1562.158515] md2: bitmap initialized from disk: read 15/15 pages, set 476869 bits
[ 1562.167764] created bitmap (233 pages) for device md2
[ 2400.956019] INFO: task kjournald:1038 blocked for more than 120 seconds.
[ 2400.963280] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2400.971356] kjournald     D ffff8800016ac400     0  1038      2 0x00000000
[ 2400.978621]  ffff88003cc33c60 0000000000000046 ffff88003cc33bd0 ffffffff8119ba6f
[ 2400.986513]  0000000000013780 ffff88003f9746b0 ffff88003f9745f0 ffff88003ea2c5f0
[ 2400.994426]  ffff88003f9749a0 ffff88003cc33fd8 ffff88003d65b000 ffff880035600a00
[ 2401.002415] Call Trace:
[ 2401.005024]  [<ffffffff8119ba6f>] ? blk_unplug+0x2f/0xa0
[ 2401.010530]  [<ffffffff81076bb4>] ? ktime_get_ts+0xa4/0xd0
[ 2401.016182]  [<ffffffff8133773e>] io_schedule+0x6e/0xc0
[ 2401.021643]  [<ffffffff81136afe>] sync_buffer+0x3e/0x50
[ 2401.027029]  [<ffffffff81337c75>] __wait_on_bit+0x55/0x80
[ 2401.032638]  [<ffffffff81136ac0>] ? sync_buffer+0x0/0x50
[ 2401.038177]  [<ffffffff81136ac0>] ? sync_buffer+0x0/0x50
[ 2401.043659]  [<ffffffff81337d18>] out_of_line_wait_on_bit+0x78/0x90
[ 2401.050129]  [<ffffffff8106e070>] ? wake_bit_function+0x0/0x30
[ 2401.056143]  [<ffffffff81136a36>] __wait_on_buffer+0x26/0x30
[ 2401.062077]  [<ffffffffa002a097>] journal_commit_transaction+0x657/0x13c0 [jbd]
[ 2401.069693]  [<ffffffff8105e104>] ? try_to_del_timer_sync+0x44/0x110
[ 2401.076212]  [<ffffffff81339ddd>] ? _spin_unlock_irqrestore+0x1d/0x50
[ 2401.082831]  [<ffffffffa002e893>] kjournald+0xe3/0x260 [jbd]
[ 2401.088708]  [<ffffffff8106e030>] ? autoremove_wake_function+0x0/0x40
[ 2401.095369]  [<ffffffffa002e7b0>] ? kjournald+0x0/0x260 [jbd]
[ 2401.101337]  [<ffffffff8106deee>] kthread+0x8e/0xa0
[ 2401.106354]  [<ffffffff8100c30a>] child_rip+0xa/0x20
[ 2401.111477]  [<ffffffff8106de60>] ? kthread+0x0/0xa0
[ 2401.116598]  [<ffffffff8100c300>] ? child_rip+0x0/0x20
[ 2401.121893] INFO: task flush-253:2:3168 blocked for more than 120 seconds.
[ 2401.128983] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2401.137114] flush-253:2   D 0000000000000002     0  3168      2 0x00000000
[ 2401.144318]  ffff88002c245a40 0000000000000046 ffff880035601600 ffff88002f621840
[ 2401.152248]  0000000000013780 ffff88003ceb9810 ffff88003ceb9750 ffff88003ea2c5f0
[ 2401.160169]  ffff88003ceb9b00 ffff88002c245fd8 ffff88002c245a00 ffff880035601600
[ 2401.168048] Call Trace:
[ 2401.170608]  [<ffffffff81076bb4>] ? ktime_get_ts+0xa4/0xd0
[ 2401.176303]  [<ffffffff8133773e>] io_schedule+0x6e/0xc0
[ 2401.181723]  [<ffffffff810ccb56>] sync_page+0x36/0x50
[ 2401.186970]  [<ffffffff81337b3e>] __wait_on_bit_lock+0x4e/0xa0
[ 2401.192991]  [<ffffffff810ccb20>] ? sync_page+0x0/0x50
[ 2401.198287]  [<ffffffff810ccb05>] __lock_page+0x65/0x70
[ 2401.203687]  [<ffffffff8106e070>] ? wake_bit_function+0x0/0x30
[ 2401.209687]  [<ffffffff810d4366>] write_cache_pages+0x3d6/0x490
[ 2401.215802]  [<ffffffff810d3da0>] ? __writepage+0x0/0x40
[ 2401.221291]  [<ffffffff810d4442>] generic_writepages+0x22/0x30
[ 2401.227327]  [<ffffffff810d4476>] do_writepages+0x26/0x30
[ 2401.232965]  [<ffffffff8112fa24>] writeback_single_inode+0xa4/0x290
[ 2401.239412]  [<ffffffff811304e2>] writeback_inodes_wb+0x2d2/0x420
[ 2401.245715]  [<ffffffff81130756>] wb_writeback+0x126/0x1e0
[ 2401.251360]  [<ffffffff81130a84>] wb_do_writeback+0x1a4/0x1c0
[ 2401.257287]  [<ffffffff81130ad5>] bdi_writeback_task+0x35/0xd0
[ 2401.263317]  [<ffffffff810e5cf0>] ? bdi_start_fn+0x0/0xf0
[ 2401.268886]  [<ffffffff810e5d71>] bdi_start_fn+0x81/0xf0
[ 2401.274370]  [<ffffffff810e5cf0>] ? bdi_start_fn+0x0/0xf0
[ 2401.279947]  [<ffffffff8106deee>] kthread+0x8e/0xa0
[ 2401.285000]  [<ffffffff8100c30a>] child_rip+0xa/0x20
[ 2401.290120]  [<ffffffff8106de60>] ? kthread+0x0/0xa0
[ 2401.295247]  [<ffffffff8100c300>] ? child_rip+0x0/0x20
[ 2401.300586] INFO: task reiserfs/0:3204 blocked for more than 120 seconds.
[ 2401.307590] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2401.315682] reiserfs/0    D ffff880016fdad48     0  3204      2 0x00000000
[ 2401.322884]  ffff88002f1b1d10 0000000000000046 ffff88000180dda0 ffff88000180dec0
[ 2401.330754]  0000000000013780 ffff88003ea180c0 ffff88003ea18000 ffff88002f43aea0
[ 2401.338683]  ffff88003ea183b0 ffff88002f1b1fd8 ffff88002f1b1cd0 ffffffff81048960
[ 2401.346684] Call Trace:
[ 2401.349252]  [<ffffffff81048960>] ? update_curr+0xb0/0x170
[ 2401.354983]  [<ffffffff813384f7>] __mutex_lock_slowpath+0x107/0x310
[ 2401.361480]  [<ffffffff81338727>] mutex_lock+0x27/0x50
[ 2401.366791]  [<ffffffffa0358b27>] flush_commit_list+0x137/0x6d0

I can't 100% separate out some hardware problem, but this system has been running 2.6.27.x rock solid for years till then..
Can somebody see something interesting in those backtraces?
If I can provide further information, I'll be glad to assist...
BR
nik


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