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
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