Re: Task Hang - Mark Murawski

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From: Mark Murawski <markm-lists@intellasoft.net>
To: linux-btrfs@vger.kernel.org
Subject: Re: Task Hang
Date: Sun, 09 Mar 2014 16:49:47 -0400	[thread overview]
Message-ID: <531CD3EB.1090401@intellasoft.net> (raw)
In-Reply-To: <5318A6C5.8040309@intellasoft.net>

Soooo... was this a help to anyone?


On 03/06/14 11:48, Mark Murawski wrote:
> Not the same problem, but I do have a lockup with another situation.
>
> I tried adding some new devices... but accidentally screwed up the
> syntax (not sure if this had anything to do with the lockup)
>
> btrfs device add / /dev/sdb
> probe of / failed, cannot detect existing filesystem.
> Use the -f option to force overwrite.
>
> office-backup {~} root# btrfs device add /dev/sdb /dev/sdd
> ERROR: error adding the device '/dev/sdb' - Inappropriate ioctl for device
>
>
> D  1772 [btrfs-transacti]
> D  6530 [btrfs-submit-2]
> D  7301 /usr/bin/perl /usr/share/backuppc/bin/BackupPC_link demo3
> D  7471 fdisk /dev/sdb
> D  7523 [btrfs-submit-2]
> D  7526 -bash
> D  7527 -bash
> D 28611 /usr/bin/perl /usr/share/backuppc/bin/BackupPC_trashClean
>
> Attached is output from w to sysrq
>
>
>
> On 03/04/2014 09:58 AM, Josef Bacik wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> On 03/04/2014 09:19 AM, Mark Murawski wrote:
>>> I have btrfs as the fs for a backuppc box.  updatedb was running at
>>> the same time as a massive rsync.
>>>
>>> Mar  4 08:31:00 office-backup kernel: INFO: task
>>> updatedb.mlocat:903 blocked for more than 120 seconds. Mar  4
>>> 08:31:00 office-backup kernel:      Not tainted 3.13.2 #3 Mar  4
>>> 08:31:00 office-backup kernel: "echo 0 >
>>> /proc/sys/kernel/hung_task_timeout_secs" disables this message. Mar
>>> 4 08:31:00 office-backup kernel: updatedb.mlocat D
>>> 0000000000000000 0   903    899 0x00000000 Mar  4 08:31:00
>>> office-backup kernel: ffff88007cad6270 0000000000000086
>>> ffff88007c0ee900 0000000000004000 Mar  4 08:31:00 office-backup
>>> kernel: ffff88005a705fd8 ffff88007cad6270 000000541a6be000
>>> ffff88007b9ac000 Mar  4 08:31:00 office-backup kernel:
>>> ffff88001ad2ef68 ffff880001f97000 ffff8800452d4480
>>> ffffffff812c3e5c Mar  4 08:31:00 office-backup kernel: Call Trace:
>>> Mar  4 08:31:00 office-backup kernel: [<ffffffff812c3e5c>] ?
>>> btrfs_map_bio+0x4ac/0x5a0 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff812b79c0>] ? repair_io_failure+0x210/0x210 Mar  4
>>> 08:31:00 office-backup kernel: [<ffffffff810d9a40>] ?
>>> __lock_page+0x70/0x70 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff817b8177>] ? io_schedule+0x87/0xd0 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff810d9a49>] ?
>>> sleep_on_page+0x9/0x10 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff817b8742>] ? __wait_on_bit+0x52/0x80 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff81294d21>] ?
>>> btree_submit_bio_hook+0xe1/0x110 Mar  4 08:31:00 office-backup
>>> kernel: [<ffffffff810d9cc3>] ? wait_on_page_bit+0x73/0x80 Mar  4
>>> 08:31:00 office-backup kernel: [<ffffffff8109bdc0>] ?
>>> wake_atomic_t_function+0x30/0x30 Mar  4 08:31:00 office-backup
>>> kernel: [<ffffffff812bb2ba>] ?
>>> read_extent_buffer_pages+0x2aa/0x2e0 Mar  4 08:31:00 office-backup
>>> kernel: [<ffffffff810da355>] ? add_to_page_cache_lru+0x25/0x40 Mar
>>> 4 08:31:00 office-backup kernel: [<ffffffff81344b21>] ?
>>> radix_tree_insert+0x91/0x250 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff81292a10>] ? verify_parent_transid+0x170/0x170 Mar  4
>>> 08:31:00 office-backup kernel: [<ffffffff812949a9>] ?
>>> btree_read_extent_buffer_pages.constprop.126+0xa9/0x110 Mar  4
>>> 08:31:00 office-backup kernel: [<ffffffff81294f23>] ?
>>> read_tree_block+0x33/0x60 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff812775dc>] ? read_block_for_search.isra.45+0x18c/0x3b0
>>> Mar  4 08:31:00 office-backup kernel: [<ffffffff81276d47>] ?
>>> comp_keys+0x27/0x30 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff81279c8c>] ? btrfs_search_slot+0x41c/0x920 Mar  4
>>> 08:31:00 office-backup kernel: [<ffffffff812b1641>] ?
>>> btrfs_get_token_16+0x61/0xf0 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff812919f5>] ? btrfs_lookup_inode+0x25/0xa0 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff81113ef0>] ?
>>> kmem_cache_alloc+0xc0/0xe0 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff812a6313>] ? btrfs_iget+0x103/0x520 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff8128eb1f>] ?
>>> btrfs_lookup_dir_item+0x9f/0xd0 Mar  4 08:31:00 office-backup
>>> kernel: [<ffffffff812a843b>] ? btrfs_lookup_dentry+0x3db/0x4c0 Mar
>>> 4 08:31:00 office-backup kernel: [<ffffffff812a8529>] ?
>>> btrfs_lookup+0x9/0x20 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff81120624>] ? lookup_real+0x14/0x50 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff811211f2>] ?
>>> __lookup_hash+0x32/0x50 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff81121b38>] ? lookup_slow+0x48/0xc0 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff81123a91>] ?
>>> path_lookupat+0x711/0x760 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff81123b0f>] ? filename_lookup+0x2f/0xd0 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff81121d77>] ?
>>> getname_flags+0xb7/0x190 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff811269ee>] ? user_path_at_empty+0x5e/0xb0 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff8111bd6d>] ?
>>> cp_new_stat+0x10d/0x120 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff8111bef1>] ? vfs_fstatat+0x41/0x90 Mar  4 08:31:00
>>> office-backup kernel: [<ffffffff8111c0c2>] ?
>>> SyS_newlstat+0x12/0x30 Mar  4 08:31:00 office-backup kernel:
>>> [<ffffffff817bb7a2>] ? system_call_fastpath+0x16/0x1b Mar  4
>>> 08:55:01 office-backup kernel: INFO: task updatedb.mlocat:903
>>> blocked for more than 120 seconds. Mar  4 08:55:01 office-backup
>>> kernel:      Not tainted 3.13.2 #3 Mar  4 08:55:01 office-backup
>>> kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
>>> this message. Mar  4 08:55:01 office-backup kernel: updatedb.mlocat
>>> D 0000000000000000 0   903    899 0x00000000 Mar  4 08:55:01
>>> office-backup kernel: ffff88007cad6270 0000000000000086
>>> ffff88007bb020d0 0000000000004000 Mar  4 08:55:01 office-backup
>>> kernel: ffff88005a705fd8 ffff88007cad6270 00000055b6aee000
>>> ffff88007b9ac000 Mar  4 08:55:01 office-backup kernel:
>>> ffff8800048282e8 ffff880076f80000 ffff8800272a09c0
>>> ffffffff812c3e5c Mar  4 08:55:01 office-backup kernel: Call Trace:
>>> Mar  4 08:55:01 office-backup kernel: [<ffffffff812c3e5c>] ?
>>> btrfs_map_bio+0x4ac/0x5a0 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff812b79c0>] ? repair_io_failure+0x210/0x210 Mar  4
>>> 08:55:01 office-backup kernel: [<ffffffff810d9a40>] ?
>>> __lock_page+0x70/0x70 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff817b8177>] ? io_schedule+0x87/0xd0 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff810d9a49>] ?
>>> sleep_on_page+0x9/0x10 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff817b8742>] ? __wait_on_bit+0x52/0x80 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff81294d21>] ?
>>> btree_submit_bio_hook+0xe1/0x110 Mar  4 08:55:01 office-backup
>>> kernel: [<ffffffff810d9cc3>] ? wait_on_page_bit+0x73/0x80 Mar  4
>>> 08:55:01 office-backup kernel: [<ffffffff8109bdc0>] ?
>>> wake_atomic_t_function+0x30/0x30 Mar  4 08:55:01 office-backup
>>> kernel: [<ffffffff812bb2ba>] ?
>>> read_extent_buffer_pages+0x2aa/0x2e0 Mar  4 08:55:01 office-backup
>>> kernel: [<ffffffff810da355>] ? add_to_page_cache_lru+0x25/0x40 Mar
>>> 4 08:55:01 office-backup kernel: [<ffffffff81292a10>] ?
>>> verify_parent_transid+0x170/0x170 Mar  4 08:55:01 office-backup
>>> kernel: [<ffffffff812949a9>] ?
>>> btree_read_extent_buffer_pages.constprop.126+0xa9/0x110 Mar  4
>>> 08:55:01 office-backup kernel: [<ffffffff81294f23>] ?
>>> read_tree_block+0x33/0x60 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff812775dc>] ? read_block_for_search.isra.45+0x18c/0x3b0
>>> Mar  4 08:55:01 office-backup kernel: [<ffffffff81276d47>] ?
>>> comp_keys+0x27/0x30 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff81279c8c>] ? btrfs_search_slot+0x41c/0x920 Mar  4
>>> 08:55:01 office-backup kernel: [<ffffffff812b1641>] ?
>>> btrfs_get_token_16+0x61/0xf0 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff812919f5>] ? btrfs_lookup_inode+0x25/0xa0 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff81113ef0>] ?
>>> kmem_cache_alloc+0xc0/0xe0 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff812a6313>] ? btrfs_iget+0x103/0x520 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff8128eb1f>] ?
>>> btrfs_lookup_dir_item+0x9f/0xd0 Mar  4 08:55:01 office-backup
>>> kernel: [<ffffffff812a843b>] ? btrfs_lookup_dentry+0x3db/0x4c0 Mar
>>> 4 08:55:01 office-backup kernel: [<ffffffff812a8529>] ?
>>> btrfs_lookup+0x9/0x20 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff81120624>] ? lookup_real+0x14/0x50 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff811211f2>] ?
>>> __lookup_hash+0x32/0x50 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff81121b38>] ? lookup_slow+0x48/0xc0 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff81123a91>] ?
>>> path_lookupat+0x711/0x760 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff81123b0f>] ? filename_lookup+0x2f/0xd0 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff81121d77>] ?
>>> getname_flags+0xb7/0x190 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff811269ee>] ? user_path_at_empty+0x5e/0xb0 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff8111bd6d>] ?
>>> cp_new_stat+0x10d/0x120 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff8111bef1>] ? vfs_fstatat+0x41/0x90 Mar  4 08:55:01
>>> office-backup kernel: [<ffffffff8111c0c2>] ?
>>> SyS_newlstat+0x12/0x30 Mar  4 08:55:01 office-backup kernel:
>>> [<ffffffff817bb7a2>] ? system_call_fastpath+0x16/0x1b
>>>
>> When this happens again do
>>
>> echo w > /proc/sysrq-trigger
>>
>> and then capture dmesg.  Thanks,
>>
>> Josef
>>
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1
>> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
>>
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>> hMZI04MgEEfMs+6pwfeR
>> =7EiY
>> -----END PGP SIGNATURE-----
>

     prev parent reply	other threads:[~2014-03-09 20:50 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-04 14:19 Task Hang Mark Murawski
2014-03-04 14:58 ` Josef Bacik
2014-03-06 16:48   ` Mark Murawski
2014-03-09 20:49     ` Mark Murawski [this message]

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