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Re: [linux-lvm] Cannot delete lv



As a follow up the lvremove hang produces this in
/var/log/messages:

Jan 30 10:21:58 vhost01 kernel: INFO: task lvremove:1460
blocked for more than 120 seconds.
Jan 30 10:21:58 vhost01 kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this
message.
Jan 30 10:21:58 vhost01 kernel: lvremove      D
0000000000000002     0  1460    307 0x00000080
Jan 30 10:21:58 vhost01 kernel: ffff8801a170db18
0000000000000082 0000000000000000 ffffffffa00041fc
Jan 30 10:21:58 vhost01 kernel: ffff8801a170dae8
00000000d9f78a4a ffff8801a170db08 ffff8802750f7cc0
Jan 30 10:21:58 vhost01 kernel: ffff88042d589b38
ffff8801a170dfd8 000000000000f4e8 ffff88042d589b38
Jan 30 10:21:58 vhost01 kernel: Call Trace:
Jan 30 10:21:58 vhost01 kernel: [<ffffffffa00041fc>] ?
dm_table_unplug_all+0x5c/0x100 [dm_mod]
Jan 30 10:21:58 vhost01 kernel: [<ffffffff814ed1c3>]
io_schedule+0x73/0xc0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811b1a2e>]
__blockdev_direct_IO_newtrunc+0x6fe/0xb90
Jan 30 10:21:58 vhost01 kernel: [<ffffffff812581fd>] ?
get_disk+0x7d/0xf0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811b1f1e>]
__blockdev_direct_IO+0x5e/0xd0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811ae820>] ?
blkdev_get_blocks+0x0/0xc0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811af687>]
blkdev_direct_IO+0x57/0x60
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811ae820>] ?
blkdev_get_blocks+0x0/0xc0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811128db>]
generic_file_aio_read+0x6bb/0x700
Jan 30 10:21:58 vhost01 kernel: [<ffffffff81213a21>] ?
avc_has_perm+0x71/0x90
Jan 30 10:21:58 vhost01 kernel: [<ffffffff8120d51f>] ?
security_inode_permission+0x1f/0x30
Jan 30 10:21:58 vhost01 kernel: [<ffffffff8117641a>]
do_sync_read+0xfa/0x140
Jan 30 10:21:58 vhost01 kernel: [<ffffffff81090bf0>] ?
autoremove_wake_function+0x0/0x40
Jan 30 10:21:58 vhost01 kernel: [<ffffffff811aec5c>] ?
block_ioctl+0x3c/0x40
Jan 30 10:21:58 vhost01 kernel: [<ffffffff81189342>] ?
vfs_ioctl+0x22/0xa0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff8121900b>] ?
selinux_file_permission+0xfb/0x150
Jan 30 10:21:58 vhost01 kernel: [<ffffffff8120c3b6>] ?
security_file_permission+0x16/0x20
Jan 30 10:21:58 vhost01 kernel: [<ffffffff81176e15>]
vfs_read+0xb5/0x1a0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff810d46e2>] ?
audit_syscall_entry+0x272/0x2a0
Jan 30 10:21:58 vhost01 kernel: [<ffffffff81176f51>]
sys_read+0x51/0x90
Jan 30 10:21:58 vhost01 kernel: [<ffffffff8100b0f2>]
system_call_fastpath+0x16/0x1b


Which repeats at two minute intevals.

-- 
***          E-Mail is NOT a SECURE channel          ***
James B. Byrne                mailto:ByrneJB Harte-Lyne ca
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3


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