From: Dag Nygren <dag@newtech.fi>
To: linux-raid@vger.kernel.org
Subject: Hand in Raid-5 code
Date: Sun, 05 Feb 2012 18:55:58 +0200 [thread overview]
Message-ID: <1363014.L0fQ1kFyFY@eseries> (raw)
Hi!
Using lessfs on top of an XFS on top on a software RAID-5 and see this freeze
happening about once a week. Usually during heavy load.
Feb 5 02:51:04 mythserv kernel: INFO: task lessfs:2687 blocked for more than
120 seconds.
Feb 5 02:51:04 mythserv kernel: “echo 0 >
/proc/sys/kernel/hung_task_timeout_secs” disables this message.
Feb 5 02:51:04 mythserv kernel: lessfs D ffff88006faf1998 0 2687 1 0×00000000
Feb 5 02:51:04 mythserv kernel: ffff880066579828 0000000000000086 ffff8800665797b8
ffffffff00000000
Feb 5 02:51:04 mythserv kernel: ffff88006faf1620 0000000000013300 ffff880066579fd8
ffff880066578010
Feb 5 02:51:04 mythserv kernel: ffff880066579fd8 0000000000013300 ffffffff81655020
ffff88006faf1620
Feb 5 02:51:04 mythserv kernel: Call Trace:
Feb 5 02:51:04 mythserv kernel: [] schedule+0x3f/0×60
Feb 5 02:51:04 mythserv kernel: [] get_active_stripe+0x2ea/0×790 [raid456]
Feb 5 02:51:04 mythserv kernel: [] ? try_to_wake_up+0x2b0/0x2b0
Feb 5 02:51:04 mythserv kernel: [] make_request+0x1ae/0×460 [raid456]
Feb 5 02:51:04 mythserv kernel: [] ? wake_up_bit+0×40/0×40
Feb 5 02:51:04 mythserv kernel: [] md_make_request+0xd5/0×200
Feb 5 02:51:04 mythserv kernel: [] generic_make_request+0xbf/0xf0
Feb 5 02:51:04 mythserv kernel: [] submit_bio+0×85/0×110
Feb 5 02:51:04 mythserv kernel: [] ? __bio_add_page+0×110/0×250
Feb 5 02:51:04 mythserv kernel: [] xfs_submit_ioend_bio+0×57/0×80 [xfs]
Feb 5 02:51:04 mythserv kernel: [] xfs_submit_ioend+0xf6/0×110 [xfs]
Feb 5 02:51:04 mythserv kernel: [] xfs_vm_writepage+0×230/0×500 [xfs]
Feb 5 02:51:04 mythserv kernel: [] __writepage+0×17/0×40
Feb 5 02:51:04 mythserv kernel: [] write_cache_pages+0×221/0x4a0
Feb 5 02:51:04 mythserv kernel: [] ? tomoyo_init_request_info+0x3f/0×70
Feb 5 02:51:04 mythserv kernel: [] ? set_page_dirty+0×70/0×70
Feb 5 02:51:04 mythserv kernel: [] generic_writepages+0×51/0×80
Feb 5 02:51:04 mythserv kernel: [] xfs_vm_writepages+0×53/0×70 [xfs]
Feb 5 02:51:04 mythserv kernel: [] do_writepages+0×21/0×40
Feb 5 02:51:04 mythserv kernel: [] __filemap_fdatawrite_range+0x5b/0×60
Feb 5 02:51:04 mythserv kernel: [] filemap_write_and_wait_range+0x5a/0×80
Feb 5 02:51:04 mythserv kernel: [] xfs_file_fsync+0×68/0x2d0 [xfs]
Feb 5 02:51:04 mythserv kernel: [] vfs_fsync_range+0x2b/0×40
Feb 5 02:51:04 mythserv kernel: [] vfs_fsync+0x1c/0×20
Feb 5 02:51:04 mythserv kernel: [] do_fsync+0x3a/0×60
Feb 5 02:51:04 mythserv kernel: [] sys_fsync+0×10/0×20
Feb 5 02:51:04 mythserv kernel: [] system_call_fastpath+0×16/0x1b
Any hints? Or any debugging I can do to help? I did find a similar cas from
2008, but that is supposed to be fixed now.
This also started after updating the kernel to the 3.x series. At the moment
using 3.2.2 and still seeing it.
--
Dag Nygren email: dag@newtech.fi
Oy Espoon NewTech Ab phone: +358 9 8024910
Träsktorpet 3 fax: +358 9 8024916
02360 ESBO Mobile: +358 400 426312
FINLAND
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next reply other threads:[~2012-02-05 16:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-05 16:55 Dag Nygren [this message]
2012-02-09 2:55 ` Hang in Raid-5 code (Old bug back?) Dag Nygren
2012-02-16 13:43 ` Konstantinos Skarlatos
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