he guys,
yes i know its *buntu xenial and nobody knows what they have backported,
but maybe its still interesting for someone....
its a kvm guest:
uname -a
Linux Storage 4.4.0-29-generic #48-Ubuntu SMP Tue Jun 28 18:34:37 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
btrfs --version
btrfs-progs v4.4
sudo btrfs fi show /
Label: 'storage' uuid: f7f34b00-862b-45a7-9cdb-ee1546aac7db
Total devices 1 FS bytes used 545.22GiB
devid 1 size 990.00GiB used 550.07GiB path /dev/vda1
sudo btrfs fi df /
Data, single: total=543.01GiB, used=542.54GiB
System, DUP: total=32.00MiB, used=112.00KiB
Metadata, DUP: total=3.50GiB, used=2.68GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
sudo btrfs fi usage /
Overall:
Device size: 990.00GiB
Device allocated: 550.07GiB
Device unallocated: 439.93GiB
Device missing: 0.00B
Used: 547.90GiB
Free (estimated): 440.39GiB (min: 220.43GiB)
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data,single: Size:543.01GiB, Used:542.54GiB
/dev/vda1 543.01GiB
Metadata,DUP: Size:3.50GiB, Used:2.68GiB
/dev/vda1 7.00GiB
System,DUP: Size:32.00MiB, Used:112.00KiB
/dev/vda1 64.00MiB
Unallocated:
/dev/vda1 439.93GiB
[55557.490198] INFO: task btrfs-cleaner:204 blocked for more than 120
seconds.
[55557.490228] Not tainted 4.4.0-29-generic #48-Ubuntu
[55557.490230] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[55557.490236] btrfs-cleaner D ffff88005aaafce8 0 204 2
0x00000000
[55557.490241] ffff88005aaafce8 ffff8801b4bcd780 ffffffff81e11500
ffff88015401b200
[55557.490243] ffff88005aab0000 ffff8801996fe9f0 ffff8801996fe800
ffff8801996fe9f0
[55557.490245] 0000000000000001 ffff88005aaafd00 ffffffff818295a5
ffff8800bb7941b0
[55557.490247] Call Trace:
[55557.490290] [<ffffffff818295a5>] schedule+0x35/0x80
[55557.642574] [<ffffffffc016afb3>]
wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[55557.664980] [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60
[55557.665104] [<ffffffffc016c8db>] start_transaction+0x2cb/0x4c0 [btrfs]
[55557.665125] [<ffffffffc016cae8>] btrfs_start_transaction+0x18/0x20
[btrfs]
[55557.665143] [<ffffffffc0154daf>] btrfs_drop_snapshot+0x7f/0x830 [btrfs]
[55557.665149] [<ffffffff81828ef6>] ? __schedule+0x3b6/0xa30
[55557.665169] [<ffffffffc016bae2>]
btrfs_clean_one_deleted_snapshot+0xb2/0x100 [btrfs]
[55557.665188] [<ffffffffc01643af>] cleaner_kthread+0xcf/0x220 [btrfs]
[55557.665207] [<ffffffffc01642e0>] ? check_leaf+0x360/0x360 [btrfs]
[55557.665219] [<ffffffff810a0808>] kthread+0xd8/0xf0
[55557.665223] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665226] [<ffffffff8182da4f>] ret_from_fork+0x3f/0x70
[55557.665228] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665269] INFO: task kworker/u4:2:4036 blocked for more than 120
seconds.
[55557.665272] Not tainted 4.4.0-29-generic #48-Ubuntu
[55557.665273] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[55557.665275] kworker/u4:2 D ffff8801254cfc48 0 4036 2
0x00000000
[55557.665294] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[55557.665296] ffff8801254cfc48 0000000000000040 ffff8801b7052580
ffff8801b4bcbe80
[55557.665298] ffff8801254d0000 ffff8801996fb9f0 ffff8801996fb800
ffff8801996fb9f0
[55557.665299] 0000000000000001 ffff8801254cfc60 ffffffff818295a5
ffff8800bb7941b0
[55557.665301] Call Trace:
[55557.665304] [<ffffffff818295a5>] schedule+0x35/0x80
[55557.665316] [<ffffffffc016afb3>]
wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[55557.665318] [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60
[55557.665331] [<ffffffffc016c88b>] start_transaction+0x27b/0x4c0 [btrfs]
[55557.665344] [<ffffffffc016cb27>] btrfs_join_transaction+0x17/0x20
[btrfs]
[55557.665357] [<ffffffffc0175295>] btrfs_finish_ordered_io+0x435/0x650
[btrfs]
[55557.665367] [<ffffffff813b991e>] ? bio_free+0x4e/0x60
[55557.665369] [<ffffffff813b9953>] ? bio_put+0x23/0x30
[55557.665385] [<ffffffffc0175775>] finish_ordered_fn+0x15/0x20 [btrfs]
[55557.665506] [<ffffffffc019deaa>] btrfs_scrubparity_helper+0xca/0x2f0
[btrfs]
[55557.665509] [<ffffffff810abcb7>] ? try_to_wake_up+0x47/0x3b0
[55557.665523] [<ffffffffc019e15e>] btrfs_endio_write_helper+0xe/0x10
[btrfs]
[55557.665526] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[55557.665528] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[55557.665529] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[55557.665531] [<ffffffff810a0808>] kthread+0xd8/0xf0
[55557.665532] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665534] [<ffffffff8182da4f>] ret_from_fork+0x3f/0x70
[55557.665536] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665538] INFO: task kworker/u4:1:4067 blocked for more than 120
seconds.
[55557.665540] Not tainted 4.4.0-29-generic #48-Ubuntu
[55557.665540] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[55557.665541] kworker/u4:1 D ffff88001bccfcc8 0 4067 2
0x00000000
[55557.665558] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
[55557.665576] ffff88001bccfcc8 ffffffff811908a9 ffff88015401b200
ffff8801b4bcd780
[55557.665578] ffff88001bcd0000 ffff8801996fe9f0 ffff8801996fe800
ffff8801996fe9f0
[55557.665580] 0000000000000001 ffff88001bccfce0 ffffffff818295a5
ffff8800bb7941b0
[55557.665581] Call Trace:
[55557.665592] [<ffffffff811908a9>] ? mempool_free+0x29/0x80
[55557.665594] [<ffffffff818295a5>] schedule+0x35/0x80
[55557.665607] [<ffffffffc016afb3>]
wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[55557.665609] [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60
[55557.665622] [<ffffffffc016c88b>] start_transaction+0x27b/0x4c0 [btrfs]
[55557.665634] [<ffffffffc016cb27>] btrfs_join_transaction+0x17/0x20
[btrfs]
[55557.665645] [<ffffffffc0156c38>] delayed_ref_async_start+0x18/0x90
[btrfs]
[55557.665659] [<ffffffffc019deaa>] btrfs_scrubparity_helper+0xca/0x2f0
[btrfs]
[55557.665673] [<ffffffffc019e10e>] btrfs_extent_refs_helper+0xe/0x10
[btrfs]
[55557.665675] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[55557.665677] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[55557.665679] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[55557.665680] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[55557.665682] [<ffffffff810a0808>] kthread+0xd8/0xf0
[55557.665683] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665685] [<ffffffff8182da4f>] ret_from_fork+0x3f/0x70
[55557.665686] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665689] INFO: task kworker/u4:3:4095 blocked for more than 120
seconds.
[55557.665690] Not tainted 4.4.0-29-generic #48-Ubuntu
[55557.665691] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[55557.665692] kworker/u4:3 D ffff88001b8cfc48 0 4095 2
0x00000000
[55557.665708] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[55557.665709] ffff88001b8cfc48 0000000000000040 ffff8801b4bcbe80
ffff8801b7319900
[55557.665711] ffff88001b8d0000 ffff8801996fb9f0 ffff8801996fb800
ffff8801996fb9f0
[55557.665712] 0000000000000001 ffff88001b8cfc60 ffffffff818295a5
ffff8800bb7941b0
[55557.665718] Call Trace:
[55557.665721] [<ffffffff818295a5>] schedule+0x35/0x80
[55557.665734] [<ffffffffc016afb3>]
wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[55557.665736] [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60
[55557.665748] [<ffffffffc016c88b>] start_transaction+0x27b/0x4c0 [btrfs]
[55557.665763] [<ffffffffc016cb27>] btrfs_join_transaction+0x17/0x20
[btrfs]
[55557.665777] [<ffffffffc0175295>] btrfs_finish_ordered_io+0x435/0x650
[btrfs]
[55557.665790] [<ffffffffc0175775>] finish_ordered_fn+0x15/0x20 [btrfs]
[55557.665804] [<ffffffffc019deaa>] btrfs_scrubparity_helper+0xca/0x2f0
[btrfs]
[55557.665806] [<ffffffff810abcb7>] ? try_to_wake_up+0x47/0x3b0
[55557.665819] [<ffffffffc019e15e>] btrfs_endio_write_helper+0xe/0x10
[btrfs]
[55557.665821] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[55557.665823] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[55557.665825] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[55557.665826] [<ffffffff810a0808>] kthread+0xd8/0xf0
[55557.665828] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665829] [<ffffffff8182da4f>] ret_from_fork+0x3f/0x70
[55557.665831] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665833] INFO: task kworker/u4:5:4342 blocked for more than 120
seconds.
[55557.665834] Not tainted 4.4.0-29-generic #48-Ubuntu
[55557.665835] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[55557.665836] kworker/u4:5 D ffff88014961fc48 0 4342 2
0x00000000
[55557.665852] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[55557.665853] ffff88014961fc48 0000000000000040 ffff8801b4bce400
ffff8801b7053200
[55557.665855] ffff880149620000 ffff8801996fb9f0 ffff8801996fb800
ffff8801996fb9f0
[55557.665856] 0000000000000001 ffff88014961fc60 ffffffff818295a5
ffff8800bb7941b0
[55557.665868] Call Trace:
[55557.665871] [<ffffffff818295a5>] schedule+0x35/0x80
[55557.665883] [<ffffffffc016afb3>]
wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[55557.665885] [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60
[55557.665898] [<ffffffffc016c88b>] start_transaction+0x27b/0x4c0 [btrfs]
[55557.665911] [<ffffffffc016cb27>] btrfs_join_transaction+0x17/0x20
[btrfs]
[55557.665924] [<ffffffffc0175295>] btrfs_finish_ordered_io+0x435/0x650
[btrfs]
[55557.665937] [<ffffffffc0175775>] finish_ordered_fn+0x15/0x20 [btrfs]
[55557.665951] [<ffffffffc019deaa>] btrfs_scrubparity_helper+0xca/0x2f0
[btrfs]
[55557.665952] [<ffffffff810abcb7>] ? try_to_wake_up+0x47/0x3b0
[55557.665966] [<ffffffffc019e15e>] btrfs_endio_write_helper+0xe/0x10
[btrfs]
[55557.665968] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[55557.665970] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[55557.665972] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[55557.665973] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[55557.665975] [<ffffffff810a0808>] kthread+0xd8/0xf0
[55557.665976] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[55557.665978] [<ffffffff8182da4f>] ret_from_fork+0x3f/0x70
[55557.665979] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
regards
sash
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