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3.0.1: xfs hang

To: xfs@xxxxxxxxxxx
Subject: 3.0.1: xfs hang
From: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Date: Sat, 20 Aug 2011 15:38:21 -0400 (EDT)
User-agent: Alpine 2.02 (DEB 1266 2009-07-14)
Hi,

Forgot to remove 'delaylog' from my fstab on one of my machines, while rm -rf a large directory with many files:

[ 2880.313073] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this 
message.
[ 2880.313147] rm              D 0000000100255dc1     0  2270   2253 0x00000000
[ 2880.313198]  ffff88012b4f9810 0000000000000086 ffff8800bd632010 
0000000000004000
[ 2880.313276]  ffff88012b4f9810 ffff8800bd633fd8 ffff8800bd633fd8 
0000000000000001
[ 2880.313352]  ffff88012b4bf790 ffff88012b4f9a78 0000000412eec110 
00000008bd633a58
[ 2880.313428] Call Trace:
[ 2880.313467]  [<ffffffff810ceeb0>] ? mempool_alloc+0x60/0x140
[ 2880.313513]  [<ffffffff812d272e>] ? submit_bio+0x5e/0xe0
[ 2880.313557]  [<ffffffff815ded05>] ? schedule_timeout+0x1f5/0x250
[ 2880.313603]  [<ffffffff812ab174>] ? xfs_buf_rele+0x74/0x110
[ 2880.313645]  [<ffffffff815dfbd1>] ? __down+0x61/0xa0
[ 2880.313688]  [<ffffffff812abf73>] ? _xfs_buf_find+0x163/0x260
[ 2880.313733]  [<ffffffff81092666>] ? down+0x46/0x50
[ 2880.313775]  [<ffffffff812aa459>] ? xfs_buf_lock+0x59/0xc0
[ 2880.313817]  [<ffffffff812abf73>] ? _xfs_buf_find+0x163/0x260
[ 2880.313861]  [<ffffffff812ac0da>] ? xfs_buf_get+0x6a/0x1b0
[ 2880.313906]  [<ffffffff812ac244>] ? xfs_buf_read+0x24/0x110
[ 2880.313951]  [<ffffffff812a2366>] ? xfs_trans_read_buf+0x206/0x400
[ 2880.313999]  [<ffffffff8127577f>] ? xfs_da_do_buf+0x2af/0x770
[ 2880.314057]  [<ffffffff81117869>] ? dput+0x39/0x310
[ 2880.314100]  [<ffffffff81275cb4>] ? xfs_da_read_buf+0x24/0x30
[ 2880.314145]  [<ffffffff8127a5db>] ? xfs_dir2_block_getdents+0xab/0x220
[ 2880.314193]  [<ffffffff8127a5db>] ? xfs_dir2_block_getdents+0xab/0x220
[ 2880.314240]  [<ffffffff81113e50>] ? filldir64+0xe0/0xe0
[ 2880.314283]  [<ffffffff81113e50>] ? filldir64+0xe0/0xe0
[ 2880.314324]  [<ffffffff81113e50>] ? filldir64+0xe0/0xe0
[ 2880.314366]  [<ffffffff81278eea>] ? xfs_readdir+0xca/0x130
[ 2880.314410]  [<ffffffff81113e50>] ? filldir64+0xe0/0xe0
[ 2880.314452]  [<ffffffff812acfa4>] ? xfs_file_readdir+0x34/0x50
[ 2880.314497]  [<ffffffff811140c8>] ? vfs_readdir+0xb8/0xd0
[ 2880.314542]  [<ffffffff81114244>] ? sys_getdents+0x84/0xe0
[ 2880.314586]  [<ffffffff815e0cbb>] ? system_call_fastpath+0x16/0x1b

(will remove delaylog, (but FYI))

Justin.

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