From: Roman Mamedov <rm@romanrm.ru>
To: <linux-btrfs@vger.kernel.org>
Subject: "Task blocked for more than 120 seconds" on file copy
Date: Thu, 13 Sep 2012 03:16:23 +0600 [thread overview]
Message-ID: <20120913031623.1e2d18f5@natsu> (raw)
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Hello,
I was copying a 60 GB file onto btrfs, and at the same time tried to stop/restart Squid,
which has its cache on the same partition. Squid locked up until the copying was finished.
This filesystem was resized by about +100% just before, if this could matter.
The kernel is 3.6.0-rc5. From dmesg:
[27175.299657] INFO: task squid3:15475 blocked for more than 120 seconds.
[27175.299665] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[27175.299670] squid3 D ffff88041fc13dc0 0 15475 1 0x00000004
[27175.299673] ffff880189735b38 0000000000000082 ffff88029588c470 ffff880189735fd8
[27175.299677] ffff880189735fd8 ffff880189735fd8 ffff8803c6ef5b40 ffff88029588c470
[27175.299679] ffff880189735b48 ffff880407a07b00 ffff88037ca3b9e8 0000000000000000
[27175.299681] Call Trace:
[27175.299688] [<ffffffff8166afc9>] schedule+0x29/0x70
[27175.299715] [<ffffffffa00e875d>] wait_current_trans.isra.28+0x9d/0x100 [btrfs]
[27175.299718] [<ffffffff810794b0>] ? finish_wait+0x80/0x80
[27175.299729] [<ffffffffa00e9e48>] start_transaction+0x148/0x3d0 [btrfs]
[27175.299737] [<ffffffffa00c3efa>] ? btrfs_free_path+0x2a/0x40 [btrfs]
[27175.299747] [<ffffffffa00ea3a3>] btrfs_start_transaction+0x13/0x20 [btrfs]
[27175.299757] [<ffffffffa00f6a97>] btrfs_create+0x47/0x210 [btrfs]
[27175.299760] [<ffffffff812a9a5c>] ? security_inode_permission+0x1c/0x30
[27175.299763] [<ffffffff8118683c>] ? __inode_permission+0x5c/0xd0
[27175.299765] [<ffffffff811894f5>] vfs_create+0xb5/0x110
[27175.299767] [<ffffffff8118a285>] do_last+0xd35/0xe30
[27175.299769] [<ffffffff8116d7fb>] ? kmem_cache_alloc_trace+0x11b/0x120
[27175.299772] [<ffffffff8118a433>] path_openat+0xb3/0x4b0
[27175.299774] [<ffffffff81185353>] ? putname+0x33/0x50
[27175.299775] [<ffffffff8118a9eb>] ? user_path_at_empty+0x6b/0xa0
[27175.299777] [<ffffffff8166bd9e>] ? _raw_spin_lock+0xe/0x20
[27175.299779] [<ffffffff8117f7d7>] ? inode_get_bytes+0x47/0x60
[27175.299781] [<ffffffff8118aa81>] do_filp_open+0x41/0xa0
[27175.299783] [<ffffffff81197306>] ? alloc_fd+0xc6/0x110
[27175.299786] [<ffffffff81179e46>] do_sys_open+0xf6/0x1e0
[27175.299788] [<ffffffff81179f51>] sys_open+0x21/0x30
[27175.299791] [<ffffffff81673e6d>] system_call_fastpath+0x1a/0x1f
[27295.008758] INFO: task squid3:15475 blocked for more than 120 seconds.
[27295.008766] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[27295.008770] squid3 D ffff88041fc13dc0 0 15475 1 0x00000004
[27295.008774] ffff880189735b38 0000000000000082 ffff88029588c470 ffff880189735fd8
[27295.008777] ffff880189735fd8 ffff880189735fd8 ffff8803c6ef5b40 ffff88029588c470
[27295.008779] ffff880189735b48 ffff880407a07b00 ffff88037ca3b9e8 0000000000000000
[27295.008781] Call Trace:
[27295.008787] [<ffffffff8166afc9>] schedule+0x29/0x70
[27295.008809] [<ffffffffa00e875d>] wait_current_trans.isra.28+0x9d/0x100 [btrfs]
[27295.008813] [<ffffffff810794b0>] ? finish_wait+0x80/0x80
[27295.008823] [<ffffffffa00e9e48>] start_transaction+0x148/0x3d0 [btrfs]
[27295.008831] [<ffffffffa00c3efa>] ? btrfs_free_path+0x2a/0x40 [btrfs]
[27295.008841] [<ffffffffa00ea3a3>] btrfs_start_transaction+0x13/0x20 [btrfs]
[27295.008851] [<ffffffffa00f6a97>] btrfs_create+0x47/0x210 [btrfs]
[27295.008853] [<ffffffff812a9a5c>] ? security_inode_permission+0x1c/0x30
[27295.008856] [<ffffffff8118683c>] ? __inode_permission+0x5c/0xd0
[27295.008858] [<ffffffff811894f5>] vfs_create+0xb5/0x110
[27295.008860] [<ffffffff8118a285>] do_last+0xd35/0xe30
[27295.008863] [<ffffffff8116d7fb>] ? kmem_cache_alloc_trace+0x11b/0x120
[27295.008865] [<ffffffff8118a433>] path_openat+0xb3/0x4b0
[27295.008867] [<ffffffff81185353>] ? putname+0x33/0x50
[27295.008868] [<ffffffff8118a9eb>] ? user_path_at_empty+0x6b/0xa0
[27295.008870] [<ffffffff8166bd9e>] ? _raw_spin_lock+0xe/0x20
[27295.008872] [<ffffffff8117f7d7>] ? inode_get_bytes+0x47/0x60
[27295.008874] [<ffffffff8118aa81>] do_filp_open+0x41/0xa0
[27295.008876] [<ffffffff81197306>] ? alloc_fd+0xc6/0x110
[27295.008878] [<ffffffff81179e46>] do_sys_open+0xf6/0x1e0
[27295.008880] [<ffffffff81179f51>] sys_open+0x21/0x30
[27295.008883] [<ffffffff81673e6d>] system_call_fastpath+0x1a/0x1f
--
With respect,
Roman
~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Stallman had a printer,
with code he could not see.
So he began to tinker,
and set the software free."
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next reply other threads:[~2012-09-12 21:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-12 21:16 Roman Mamedov [this message]
2012-09-13 12:56 ` "Task blocked for more than 120 seconds" on file copy Josef Bacik
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