From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 14830] When other IO is running sync times go to 10 to 20
minutes
Date: Thu, 15 Apr 2010 08:45:22 GMT
Message-ID: <201004150845.o3F8jMsx024449@demeter.kernel.org>
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Neil Broomfield changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |neil.broomfield@caasaudio.c
| |om
--- Comment #33 from Neil Broomfield 2010-04-15 08:44:13 ---
I think I might be seeing the same/similar issue, see "dmesg | tail" below, it
seams fairly repeatable and occurs usually when I move a file from my download
drive to my raid array 5 (5 disk, 6TB), I'm running Ubuntu 9.10 with all the
latest official patches.
[301080.930044] INFO: task kjournald2:1583 blocked for more than 120 seconds.
[301080.930048] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[301080.930051] kjournald2 D ffff88007734e8e0 0 1583 2 0x00000000
[301080.930056] ffff88006c38dd10 0000000000000046 ffff88005695d850
0000000000015880
[301080.930060] ffff880070d247c0 0000000000015880 0000000000015880
0000000000015880
[301080.930063] 0000000000015880 ffff880070d247c0 0000000000015880
0000000000015880
[301080.930066] Call Trace:
[301080.930075] []
jbd2_journal_commit_transaction+0x1aa/0x1120
[301080.930080] [] ? rb_erase+0xd6/0x160
[301080.930085] [] ? __switch_to+0x1e5/0x370
[301080.930088] [] ? finish_task_switch+0x65/0x120
[301080.930093] [] ? _spin_lock_irqsave+0x2a/0x40
[301080.930097] [] ? lock_timer_base+0x37/0x70
[301080.930101] [] ? autoremove_wake_function+0x0/0x40
[301080.930105] [] kjournald2+0x103/0x270
[301080.930108] [] ? autoremove_wake_function+0x0/0x40
[301080.930111] [] ? kjournald2+0x0/0x270
[301080.930114] [] kthread+0xa6/0xb0
[301080.930117] [] child_rip+0xa/0x20
[301080.930120] [] ? kthread+0x0/0xb0
[301080.930123] [] ? child_rip+0x0/0x20
[301080.930145] INFO: task mv:2005 blocked for more than 120 seconds.
[301080.930146] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[301080.930148] mv D ffff880079705928 0 2005 2464 0x00000000
[301080.930152] ffff8800210f9868 0000000000000086 ffff8800210f97e8
0000000000015880
[301080.930155] ffff880003b747c0 0000000000015880 0000000000015880
0000000000015880
[301080.930159] 0000000000015880 ffff880003b747c0 0000000000015880
0000000000015880
[301080.930162] Call Trace:
[301080.930165] [] __down_read+0x8d/0xc6
[301080.930169] [] down_read+0x19/0x20
[301080.930172] [] ext4_get_blocks+0x52/0x210
[301080.930175] [] ext4_da_get_block_prep+0x77/0x100
[301080.930179] [] __block_prepare_write+0x1c3/0x560
[301080.930182] [] ? ext4_da_get_block_prep+0x0/0x100
[301080.930185] [] block_write_begin+0x5f/0x100
[301080.930188] [] ext4_da_write_begin+0x12d/0x260
[301080.930191] [] ? ext4_da_get_block_prep+0x0/0x100
[301080.930194] [] ? finish_task_switch+0x65/0x120
[301080.930198] [] generic_perform_write+0xb2/0x1d0
[301080.930202] [] ? ext4_xattr_get+0x5b/0x90
[301080.930206] [] generic_file_buffered_write+0x83/0x140
[301080.930209] []
__generic_file_aio_write_nolock+0x240/0x470
[301080.930213] [] ? touch_atime+0x33/0x150
[301080.930216] [] generic_file_aio_write+0x70/0xf0
[301080.930221] [] ext4_file_write+0x49/0x160
[301080.930225] [] do_sync_write+0xf2/0x130
[301080.930229] [] ? fsnotify+0xfb/0x140
[301080.930232] [] ? autoremove_wake_function+0x0/0x40
[301080.930235] [] ? dput+0xc3/0x190
[301080.930239] [] ? security_file_permission+0x11/0x20
[301080.930242] [] vfs_write+0xb8/0x1a0
[301080.930245] [] sys_write+0x4c/0x80
[301080.930249] [] system_call_fastpath+0x16/0x1b
Let me know if I can be of any further assistance? If you require more info /
test running, I'm happy to help.
Neil
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