Hi!
Kernel at:
commit 2677d7d38f465ca9c8c33619a46bf4fe2852c39d
Author: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Date: Mon Oct 10 12:10:48 2016 -0800
Freshly formated two tiered filesystem:
# bcache format --force --tier 0 /dev/sde1 --tier 1 /dev/sdd1
--btree_node=262144
External UUID: f213abd2-2517-4723-a82f-cffed89094f6
Internal UUID: b6b5409e-e198-43a6-8e2a-49f4ba8c714b
Label:
Version: 6
Block_size: 512
Btree node size: 256.0K
Error action: readonly
Clean: 0
Metadata replicas: have 1, want 1
Data replicas: have 1, want 1
Metadata checksum type: crc32c
Data checksum type: crc32c
Compression type: none
String hash type: siphash
32 bit inodes: 0
GC reserve percentage: 0%
Root reserve percentage: 0%
Devices: 2
Device 0:
UUID: 29916bec-62ce-4d1e-bf3f-d2b72b1e68b2
bucket_size: 128.0K
first_bucket: 8
nbuckets: 81920
Last mount: (never)
State: active
Tier: 0
Has metadata: 0
Has data: 0
Replacement policy: lru
Discard: 0
Device 1:
UUID: 84a22c92-c386-42a7-a98d-a4f00e916527
bucket_size: 256.0K
first_bucket: 4
nbuckets: 5723193
Last mount: (never)
State: active
Tier: 1
[I've got no more in tmux history]
While I was copying many small files using mc I got:
[ 6019.040067] INFO: task bch_tier_read:21414 blocked for more than 120
seconds.
[ 6019.040071] Tainted: G W 4.8.0+ #1
[ 6019.040072] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6019.040073] bch_tier_read D ffff880003a7bbc0 0 21414 2
0x00000000
[ 6019.040079] ffff880003a7bbc0 ffff880036949a80 ffff880000f64f80
ffff880003a7bc98
[ 6019.040082] ffff880003a7c000 ffff880003a7bd08 ffff880003a7bcf0
ffff880003a7bc00
[ 6019.040085] 0000000000000001 ffff880003a7bbd8 ffffffff81473730
ffff880003a7bc98
[ 6019.040089] Call Trace:
[ 6019.040096] [<ffffffff81473730>] schedule+0x30/0x80
[ 6019.040128] [<ffffffffa02c7798>] bch_move_ctxt_wait+0x88/0xb0
[bcache]
[ 6019.040133] [<ffffffff810864c0>] ? wake_atomic_t_function+0x60/0x60
[ 6019.040152] [<ffffffffa02d5b53>] read_tiering+0x143/0x4c0 [bcache]
[ 6019.040155] [<ffffffff814732ad>] ? __schedule+0x2cd/0x720
[ 6019.040172] [<ffffffffa02a959a>] ?
bch_bucket_stats_read_cache+0xda/0x150 [bcache]
[ 6019.040191] [<ffffffffa02d6117>] bch_tiering_thread+0x247/0x250
[bcache]
[ 6019.040210] [<ffffffffa02d5ed0>] ? read_tiering+0x4c0/0x4c0 [bcache]
[ 6019.040213] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6019.040216] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6019.040219] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6019.040221] INFO: task mc:21426 blocked for more than 120 seconds.
[ 6019.040222] Tainted: G W 4.8.0+ #1
[ 6019.040223] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6019.040224] mc D ffff88001cd53810 0 21426 2301
0x00000000
[ 6019.040227] ffff88001cd53810 ffffffff8180b4c0 ffff880000f63500
ffff880005cc4118
[ 6019.040231] ffff88001cd54000 ffff8800370e3c00 ffff880000fc0000
00000557e2c862eb
[ 6019.040234] ffff88001cd538a8 ffff88001cd53828 ffffffff81473730
ffff880000f63500
[ 6019.040237] Call Trace:
[ 6019.040239] [<ffffffff81473730>] schedule+0x30/0x80
[ 6019.040258] [<ffffffffa02deab5>] __closure_sync+0x55/0x5a0 [bcache]
[ 6019.040273] [<ffffffffa02a1cc1>] bch_btree_node_read+0x141/0x2d0
[bcache]
[ 6019.040290] [<ffffffffa02ab0a0>] ? bch_io_clock_init+0x90/0x90
[bcache]
[ 6019.040306] [<ffffffffa029d2b6>] ? mca_alloc+0x106/0x420 [bcache]
[ 6019.040321] [<ffffffffa029d676>] bch_btree_node_fill+0xa6/0x1c0
[bcache]
[ 6019.040337] [<ffffffffa029d88a>] bch_btree_node_get+0xfa/0x3d0
[bcache]
[ 6019.040352] [<ffffffffa02a25d4>]
btree_iter_down.constprop.17+0xf4/0x200 [bcache]
[ 6019.040369] [<ffffffffa02a61fd>] ?
bch_btree_bset_insert_key+0xed/0x160 [bcache]
[ 6019.040385] [<ffffffffa02a2f1f>]
__bch_btree_iter_traverse+0x1af/0x5b0 [bcache]
[ 6019.040401] [<ffffffffa02a4028>]
bch_btree_iter_peek_with_holes+0x38/0x290 [bcache]
[ 6019.040419] [<ffffffffa02b6f02>] __bch_write_inode+0x92/0x2b0
[bcache]
[ 6019.040422] [<ffffffff811565f1>] ? __kmalloc+0x121/0x1a0
[ 6019.040440] [<ffffffffa02acd67>] ? dirent_create_key+0x37/0xc0
[bcache]
[ 6019.040443] [<ffffffff81189659>] ? __mark_inode_dirty+0x2e9/0x390
[ 6019.040446] [<ffffffff81176d7f>] ? __d_instantiate+0x2f/0xe0
[ 6019.040464] [<ffffffffa02b7525>] bch_inc_nlink+0x35/0x50 [bcache]
[ 6019.040481] [<ffffffffa02b7576>] bch_mkdir+0x36/0x40 [bcache]
[ 6019.040484] [<ffffffff8116cfc8>] vfs_mkdir+0xc8/0x120
[ 6019.040486] [<ffffffff81170dd6>] SyS_mkdir+0x66/0xc0
[ 6019.040488] [<ffffffff814777df>] entry_SYSCALL_64_fastpath+0x17/0x93
[ 6019.040494] INFO: task kworker/1:0:17657 blocked for more than 120
seconds.
[ 6019.040496] Tainted: G W 4.8.0+ #1
[ 6019.040496] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6019.040497] kworker/1:0 D ffff88000aa87cc8 0 17657 2
0x00000000
[ 6019.040516] Workqueue: events_freezable btree_node_write_work
[bcache]
[ 6019.040518] ffff88000aa87cc8 ffff88003e144f80 ffff880000f60000
ffff88003e023000
[ 6019.040521] ffff88000aa88000 ffff880019e43218 ffff880000f60000
0000000000000040
[ 6019.040524] ffff880019e43230 ffff88000aa87ce0 ffffffff81473730
7fffffffffffffff
[ 6019.040527] Call Trace:
[ 6019.040530] [<ffffffff81473730>] schedule+0x30/0x80
[ 6019.040532] [<ffffffff814767bd>] schedule_timeout+0x24d/0x300
[ 6019.040550] [<ffffffffa02cafe0>] ? six_lock_type+0x60/0x340 [bcache]
[ 6019.040552] [<ffffffff814752df>] __down+0x5f/0xa0
[ 6019.040554] [<ffffffff8108bd9c>] down+0x3c/0x50
[ 6019.040570] [<ffffffffa02a1fb5>] __bch_btree_node_write+0x25/0xa0
[bcache]
[ 6019.040585] [<ffffffffa02a2066>]
bch_btree_node_write_dirty+0x36/0x50 [bcache]
[ 6019.040601] [<ffffffffa02a2142>] btree_node_write_work+0x12/0x20
[bcache]
[ 6019.040603] [<ffffffff81064c7b>] process_one_work+0x15b/0x470
[ 6019.040605] [<ffffffff81064fd6>] worker_thread+0x46/0x4e0
[ 6019.040607] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6019.040609] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6019.040612] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6019.040614] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6019.040617] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6028.003562] hpsa 0000:01:00.0: scsi 10:0:0:0: added RAID
HP P400 controller SSDSmartPathCap- En- Exp=1
[ 6028.120251] hpsa 0000:01:00.0: addition failed -19, device not added.
[ 6058.723545] hpsa 0000:01:00.0: scsi 10:0:0:0: added RAID
HP P400 controller SSDSmartPathCap- En- Exp=1
[ 6058.840113] hpsa 0000:01:00.0: addition failed -19, device not added.
[ 6089.443513] hpsa 0000:01:00.0: scsi 10:0:0:0: added RAID
HP P400 controller SSDSmartPathCap- En- Exp=1
[ 6089.560195] hpsa 0000:01:00.0: addition failed -19, device not added.
[ 6120.163498] hpsa 0000:01:00.0: scsi 10:0:0:0: added RAID
HP P400 controller SSDSmartPathCap- En- Exp=1
[ 6120.280129] hpsa 0000:01:00.0: addition failed -19, device not added.
[ 6141.920058] INFO: task bch_tier_read:21414 blocked for more than 120
seconds.
[ 6141.920062] Tainted: G W 4.8.0+ #1
[ 6141.920063] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.920064] bch_tier_read D ffff880003a7bbc0 0 21414 2
0x00000000
[ 6141.920070] ffff880003a7bbc0 ffff880036949a80 ffff880000f64f80
ffff880003a7bc98
[ 6141.920073] ffff880003a7c000 ffff880003a7bd08 ffff880003a7bcf0
ffff880003a7bc00
[ 6141.920076] 0000000000000001 ffff880003a7bbd8 ffffffff81473730
ffff880003a7bc98
[ 6141.920080] Call Trace:
[ 6141.920088] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.920127] [<ffffffffa02c7798>] bch_move_ctxt_wait+0x88/0xb0
[bcache]
[ 6141.920132] [<ffffffff810864c0>] ? wake_atomic_t_function+0x60/0x60
[ 6141.920151] [<ffffffffa02d5b53>] read_tiering+0x143/0x4c0 [bcache]
[ 6141.920154] [<ffffffff814732ad>] ? __schedule+0x2cd/0x720
[ 6141.920171] [<ffffffffa02a959a>] ?
bch_bucket_stats_read_cache+0xda/0x150 [bcache]
[ 6141.920190] [<ffffffffa02d6117>] bch_tiering_thread+0x247/0x250
[bcache]
[ 6141.920224] [<ffffffffa02d5ed0>] ? read_tiering+0x4c0/0x4c0 [bcache]
[ 6141.920227] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6141.920230] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6141.920233] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6141.920235] INFO: task mc:21426 blocked for more than 120 seconds.
[ 6141.920237] Tainted: G W 4.8.0+ #1
[ 6141.920237] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.920239] mc D ffff88001cd53810 0 21426 2301
0x00000000
[ 6141.920242] ffff88001cd53810 ffffffff8180b4c0 ffff880000f63500
ffff880005cc4118
[ 6141.920245] ffff88001cd54000 ffff8800370e3c00 ffff880000fc0000
00000557e2c862eb
[ 6141.920248] ffff88001cd538a8 ffff88001cd53828 ffffffff81473730
ffff880000f63500
[ 6141.920252] Call Trace:
[ 6141.920254] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.920272] [<ffffffffa02deab5>] __closure_sync+0x55/0x5a0 [bcache]
[ 6141.920288] [<ffffffffa02a1cc1>] bch_btree_node_read+0x141/0x2d0
[bcache]
[ 6141.920305] [<ffffffffa02ab0a0>] ? bch_io_clock_init+0x90/0x90
[bcache]
[ 6141.920320] [<ffffffffa029d2b6>] ? mca_alloc+0x106/0x420 [bcache]
[ 6141.920336] [<ffffffffa029d676>] bch_btree_node_fill+0xa6/0x1c0
[bcache]
[ 6141.920351] [<ffffffffa029d88a>] bch_btree_node_get+0xfa/0x3d0
[bcache]
[ 6141.920367] [<ffffffffa02a25d4>]
btree_iter_down.constprop.17+0xf4/0x200 [bcache]
[ 6141.920383] [<ffffffffa02a61fd>] ?
bch_btree_bset_insert_key+0xed/0x160 [bcache]
[ 6141.920406] [<ffffffffa02a2f1f>]
__bch_btree_iter_traverse+0x1af/0x5b0 [bcache]
[ 6141.920422] [<ffffffffa02a4028>]
bch_btree_iter_peek_with_holes+0x38/0x290 [bcache]
[ 6141.920440] [<ffffffffa02b6f02>] __bch_write_inode+0x92/0x2b0
[bcache]
[ 6141.920443] [<ffffffff811565f1>] ? __kmalloc+0x121/0x1a0
[ 6141.920460] [<ffffffffa02acd67>] ? dirent_create_key+0x37/0xc0
[bcache]
[ 6141.920464] [<ffffffff81189659>] ? __mark_inode_dirty+0x2e9/0x390
[ 6141.920467] [<ffffffff81176d7f>] ? __d_instantiate+0x2f/0xe0
[ 6141.920485] [<ffffffffa02b7525>] bch_inc_nlink+0x35/0x50 [bcache]
[ 6141.920502] [<ffffffffa02b7576>] bch_mkdir+0x36/0x40 [bcache]
[ 6141.920505] [<ffffffff8116cfc8>] vfs_mkdir+0xc8/0x120
[ 6141.920507] [<ffffffff81170dd6>] SyS_mkdir+0x66/0xc0
[ 6141.920509] [<ffffffff814777df>] entry_SYSCALL_64_fastpath+0x17/0x93
[ 6141.920513] INFO: task kworker/0:1:22843 blocked for more than 120
seconds.
[ 6141.920514] Tainted: G W 4.8.0+ #1
[ 6141.920515] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.920516] kworker/0:1 D ffff88002afdfcc8 0 22843 2
0x00000000
[ 6141.920535] Workqueue: events_freezable btree_node_write_work
[bcache]
[ 6141.920537] ffff88002afdfcc8 ffffffff8180b4c0 ffff8800369d4f80
00000000ffffffff
[ 6141.920540] ffff88002afe0000 ffff880014e92218 ffff8800369d4f80
0000000000000000
[ 6141.920543] ffff880014e92230 ffff88002afdfce0 ffffffff81473730
7fffffffffffffff
[ 6141.920546] Call Trace:
[ 6141.920549] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.920551] [<ffffffff814767bd>] schedule_timeout+0x24d/0x300
[ 6141.920569] [<ffffffffa02cafe0>] ? six_lock_type+0x60/0x340 [bcache]
[ 6141.920571] [<ffffffff814752df>] __down+0x5f/0xa0
[ 6141.920573] [<ffffffff8108bd9c>] down+0x3c/0x50
[ 6141.920589] [<ffffffffa02a1fb5>] __bch_btree_node_write+0x25/0xa0
[bcache]
[ 6141.920604] [<ffffffffa02a2066>]
bch_btree_node_write_dirty+0x36/0x50 [bcache]
[ 6141.920620] [<ffffffffa02a2142>] btree_node_write_work+0x12/0x20
[bcache]
[ 6141.920622] [<ffffffff81064c7b>] process_one_work+0x15b/0x470
[ 6141.920624] [<ffffffff81064fd6>] worker_thread+0x46/0x4e0
[ 6141.920626] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.920628] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.920630] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6141.920633] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6141.920636] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6141.920638] INFO: task kworker/0:0:27540 blocked for more than 120
seconds.
[ 6141.920640] Tainted: G W 4.8.0+ #1
[ 6141.920641] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.920641] kworker/0:0 D ffff880009f8fcc8 0 27540 2
0x00000000
[ 6141.920659] Workqueue: events_freezable btree_node_write_work
[bcache]
[ 6141.920680] ffff880009f8fcc8 ffff88003771cf80 ffff8800369d3500
ffff880009f8fcd0
[ 6141.920683] ffff880009f90000 ffff8800369fce18 ffff8800369d3500
0000000000000000
[ 6141.920687] ffff8800369fce30 ffff880009f8fce0 ffffffff81473730
7fffffffffffffff
[ 6141.920690] Call Trace:
[ 6141.920692] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.920695] [<ffffffff814767bd>] schedule_timeout+0x24d/0x300
[ 6141.920713] [<ffffffffa02cafe0>] ? six_lock_type+0x60/0x340 [bcache]
[ 6141.920715] [<ffffffff814752df>] __down+0x5f/0xa0
[ 6141.920717] [<ffffffff8108bd9c>] down+0x3c/0x50
[ 6141.920733] [<ffffffffa02a1fb5>] __bch_btree_node_write+0x25/0xa0
[bcache]
[ 6141.920748] [<ffffffffa02a2066>]
bch_btree_node_write_dirty+0x36/0x50 [bcache]
[ 6141.920764] [<ffffffffa02a2142>] btree_node_write_work+0x12/0x20
[bcache]
[ 6141.920766] [<ffffffff81064c7b>] process_one_work+0x15b/0x470
[ 6141.920768] [<ffffffff81064fd6>] worker_thread+0x46/0x4e0
[ 6141.920770] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.920772] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6141.920774] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6141.920777] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6141.920779] INFO: task kworker/1:2:27553 blocked for more than 120
seconds.
[ 6141.920781] Tainted: G W 4.8.0+ #1
[ 6141.920781] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.920782] kworker/1:2 D ffff8800326cbcc8 0 27553 2
0x00000000
[ 6141.920800] Workqueue: events_freezable btree_node_write_work
[bcache]
[ 6141.920802] ffff8800326cbcc8 ffff88003e123500 ffff88003e261a80
0000000200000001
[ 6141.920805] ffff8800326cc000 ffff880018d85618 ffff88003e261a80
0000000000000040
[ 6141.920808] ffff880018d85630 ffff8800326cbce0 ffffffff81473730
7fffffffffffffff
[ 6141.920811] Call Trace:
[ 6141.920814] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.920816] [<ffffffff814767bd>] schedule_timeout+0x24d/0x300
[ 6141.920834] [<ffffffffa02cafe0>] ? six_lock_type+0x60/0x340 [bcache]
[ 6141.920836] [<ffffffff814752df>] __down+0x5f/0xa0
[ 6141.920838] [<ffffffff8108bd9c>] down+0x3c/0x50
[ 6141.920854] [<ffffffffa02a1fb5>] __bch_btree_node_write+0x25/0xa0
[bcache]
[ 6141.920869] [<ffffffffa02a2066>]
bch_btree_node_write_dirty+0x36/0x50 [bcache]
[ 6141.920884] [<ffffffffa02a2142>] btree_node_write_work+0x12/0x20
[bcache]
[ 6141.920894] [<ffffffff81064c7b>] process_one_work+0x15b/0x470
[ 6141.920896] [<ffffffff81064fd6>] worker_thread+0x46/0x4e0
[ 6141.920898] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.920900] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.920902] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6141.920905] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6141.920907] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6141.920910] INFO: task kworker/u8:2:10367 blocked for more than 120
seconds.
[ 6141.920911] Tainted: G W 4.8.0+ #1
[ 6141.920912] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.920913] kworker/u8:2 D ffff8800179a3798 0 10367 2
0x00000000
[ 6141.920918] Workqueue: writeback wb_workfn (flush-bcache-1)
[ 6141.920920] ffff8800179a3798 ffff88003e144f80 ffff88003764b500
ffff880000fcc860
[ 6141.920924] ffff8800179a4000 ffff8800179a37e0 0000000000000004
0000000000000004
[ 6141.920927] ffff880014e92050 ffff8800179a37b0 ffffffff81473730
0000000000000002
[ 6141.920930] Call Trace:
[ 6141.920932] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.920950] [<ffffffffa02cb1b2>] six_lock_type+0x232/0x340 [bcache]
[ 6141.920966] [<ffffffffa02a27de>] btree_node_lock_write+0x8e/0xc0
[bcache]
[ 6141.920982] [<ffffffffa02a4ec1>]
btree_node_lock_for_insert+0x51/0x90 [bcache]
[ 6141.920998] [<ffffffffa02a78e0>] __bch_btree_insert_at+0x230/0x990
[bcache]
[ 6141.921021] [<ffffffffa02a407a>] ?
bch_btree_iter_peek_with_holes+0x8a/0x290 [bcache]
[ 6141.921039] [<ffffffffa02b709c>] __bch_write_inode+0x22c/0x2b0
[bcache]
[ 6141.921058] [<ffffffffa02b73ec>] bch_vfs_write_inode+0x3c/0x90
[bcache]
[ 6141.921060] [<ffffffff8118994f>]
__writeback_single_inode+0x24f/0x320
[ 6141.921063] [<ffffffff81189e95>] writeback_sb_inodes+0x1d5/0x490
[ 6141.921065] [<ffffffff8118a1dd>] __writeback_inodes_wb+0x8d/0xc0
[ 6141.921067] [<ffffffff8118a4ca>] wb_writeback+0x22a/0x2e0
[ 6141.921070] [<ffffffff8118c508>] wb_workfn+0x2e8/0x3b0
[ 6141.921072] [<ffffffff81064c7b>] process_one_work+0x15b/0x470
[ 6141.921074] [<ffffffff81064fd6>] worker_thread+0x46/0x4e0
[ 6141.921076] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.921078] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6141.921081] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6141.921083] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
[ 6141.921085] INFO: task kworker/0:2:17582 blocked for more than 120
seconds.
[ 6141.921087] Tainted: G W 4.8.0+ #1
[ 6141.921088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6141.921088] kworker/0:2 D ffff880006b3fcc8 0 17582 2
0x00000000
[ 6141.921106] Workqueue: events_freezable btree_node_write_work
[bcache]
[ 6141.921108] ffff880006b3fcc8 ffffffff8180b4c0 ffff88003771b500
ffffffff8107250a
[ 6141.921111] ffff880006b40000 ffff88003e24f618 ffff88003771b500
0000000000000000
[ 6141.921114] ffff88003e24f630 ffff880006b3fce0 ffffffff81473730
7fffffffffffffff
[ 6141.921117] Call Trace:
[ 6141.921120] [<ffffffff8107250a>] ? ttwu_do_activate+0x6a/0x80
[ 6141.921123] [<ffffffff81473730>] schedule+0x30/0x80
[ 6141.921125] [<ffffffff814767bd>] schedule_timeout+0x24d/0x300
[ 6141.921142] [<ffffffffa02cafe0>] ? six_lock_type+0x60/0x340 [bcache]
[ 6141.921145] [<ffffffff814752df>] __down+0x5f/0xa0
[ 6141.921147] [<ffffffff8108bd9c>] down+0x3c/0x50
[ 6141.921162] [<ffffffffa02a1fb5>] __bch_btree_node_write+0x25/0xa0
[bcache]
[ 6141.921185] [<ffffffffa02a2066>]
bch_btree_node_write_dirty+0x36/0x50 [bcache]
[ 6141.921200] [<ffffffffa02a2142>] btree_node_write_work+0x12/0x20
[bcache]
[ 6141.921202] [<ffffffff81064c7b>] process_one_work+0x15b/0x470
[ 6141.921204] [<ffffffff81064fd6>] worker_thread+0x46/0x4e0
[ 6141.921206] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.921208] [<ffffffff81064f90>] ? process_one_work+0x470/0x470
[ 6141.921210] [<ffffffff81069f84>] kthread+0xc4/0xe0
[ 6141.921213] [<ffffffff814779ff>] ret_from_fork+0x1f/0x40
[ 6141.921215] [<ffffffff81069ec0>] ? kthread_worker_fn+0x160/0x160
I didn't try to reproduce it.
Marcin
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