On 07/22/2014 04:53 PM, Chris Mason wrote:
On 07/19/2014 02:23 PM, Martin Steigerwald wrote:
Running 3.15.6 with this patch applied on top:
- still causes a hang with `rsync -hPaHAXx --del /mnt/home/nyx/ /home/nyx/`
- no extra error messages printed (`dmesg | grep racing`) compared to
without the patch
I got same results with 3.16-rc5 + this patch (see thread BTRFS hang with
3.16-rc5). 3.16-rc4 still is fine with me. No hang whatsoever so far.
To recap some details (so I can have it all in one place):
- /home/ is btrfs with compress=lzo
BTRFS RAID 1 with lzo.
- I have _not_ created any nodatacow files.
Me neither.
- Full stack is: sata <-> dmcrypt <-> lvm <-> btrfs (I noticed others
mentioning the use of dmcrypt)
Same, except no dmcrypt.
Thanks for the help in tracking this down everyone. We'll get there!
Are you all running multi-disk systems (from a btrfs POV, more than one
device?) I don't care how many physical drives this maps to, just does
btrfs think there's more than one drive.
-chris
3.16-rc6 with your patch on top still causes hangs here.
No traces of "racing" in dmesg
Hang is on a btrfs raid 0 consisting of 3 drives.
Full stack is: sata <-> dmcrypt <-> btrfs raid0
Hang was caused by
1. Several rsync -av --inplace --delete <source> <backup subvol>
2. btrfs subvolume snapshot -r <backup subvol> <bacup snap>
The rsync jobs are done one at a time
btrfs is stuck when trying to create the read only snapshot
--
Torbjørn
All output via netconsole.
sysrq-w:
https://gist.github.com/anonymous/d1837187e261f9a4cbd2#file-gistfile1-txt
sysrq-t:
https://gist.github.com/anonymous/2bdb73f035ab9918c63d#file-gistfile1-txt
dmesg:
[ 9352.784136] INFO: task btrfs-transacti:3874 blocked for more than 120
seconds.
[ 9352.784222] Tainted: G E 3.16.0-rc6+ #64
[ 9352.784270] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9352.784354] btrfs-transacti D ffff88042fc943c0 0 3874 2
0x00000000
[ 9352.784413] ffff8803fb9dfca0 0000000000000002 ffff8800c4214b90
ffff8803fb9dffd8
[ 9352.784502] 00000000000143c0 00000000000143c0 ffff88041977b260
ffff8803d29f23a0
[ 9352.784592] ffff8803d29f23a8 7fffffffffffffff ffff8800c4214b90
ffff880232e2c0a8
[ 9352.784682] Call Trace:
[ 9352.784726] [<ffffffff8170eb59>] schedule+0x29/0x70
[ 9352.784774] [<ffffffff8170df99>] schedule_timeout+0x209/0x280
[ 9352.784827] [<ffffffff8170874b>] ? __slab_free+0xfe/0x2c3
[ 9352.784879] [<ffffffff810829f4>] ? wake_up_worker+0x24/0x30
[ 9352.784929] [<ffffffff8170f656>] wait_for_completion+0xa6/0x160
[ 9352.784981] [<ffffffff8109d4e0>] ? wake_up_state+0x20/0x20
[ 9352.785049] [<ffffffffc045b936>]
btrfs_wait_and_free_delalloc_work+0x16/0x30 [btrfs]
[ 9352.785141] [<ffffffffc04658be>]
btrfs_run_ordered_operations+0x1ee/0x2c0 [btrfs]
[ 9352.785260] [<ffffffffc044bbb7>] btrfs_commit_transaction+0x27/0xa40
[btrfs]
[ 9352.785324] [<ffffffffc0447d65>] transaction_kthread+0x1b5/0x240 [btrfs]
[ 9352.785385] [<ffffffffc0447bb0>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
[ 9352.785469] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9352.785517] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.785571] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9352.785620] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.785678] INFO: task kworker/u16:3:6932 blocked for more than 120
seconds.
[ 9352.785732] Tainted: G E 3.16.0-rc6+ #64
[ 9352.785780] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9352.785863] kworker/u16:3 D ffff88042fd943c0 0 6932 2
0x00000000
[ 9352.785930] Workqueue: btrfs-flush_delalloc normal_work_helper [btrfs]
[ 9352.785983] ffff88035f1bbb58 0000000000000002 ffff880417e564c0
ffff88035f1bbfd8
[ 9352.786072] 00000000000143c0 00000000000143c0 ffff8800c1a03260
ffff88042fd94cd8
[ 9352.786160] ffff88042ffb4be8 ffff88035f1bbbe0 0000000000000002
ffffffff81159930
[ 9352.786250] Call Trace:
[ 9352.786292] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9352.786343] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9352.786393] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9352.786443] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9352.786495] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9352.786544] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9352.786607] [<ffffffffc046711e>] ? flush_write_bio+0xe/0x10 [btrfs]
[ 9352.786669] [<ffffffffc046b0c0>]
extent_write_cache_pages.isra.28.constprop.46+0x3d0/0x3f0 [btrfs]
[ 9352.786766] [<ffffffffc046cd2d>] extent_writepages+0x4d/0x70 [btrfs]
[ 9352.786828] [<ffffffffc04506f0>] ? btrfs_submit_direct+0x6a0/0x6a0
[btrfs]
[ 9352.786883] [<ffffffff810b0d78>] ? __wake_up_common+0x58/0x90
[ 9352.786943] [<ffffffffc044e1d8>] btrfs_writepages+0x28/0x30 [btrfs]
[ 9352.786997] [<ffffffff811668ee>] do_writepages+0x1e/0x40
[ 9352.787045] [<ffffffff8115b409>] __filemap_fdatawrite_range+0x59/0x60
[ 9352.787097] [<ffffffff8115b4bc>] filemap_flush+0x1c/0x20
[ 9352.787151] [<ffffffffc045158a>] btrfs_run_delalloc_work+0x5a/0xa0
[btrfs]
[ 9352.787211] [<ffffffffc047accf>] normal_work_helper+0x11f/0x2b0 [btrfs]
[ 9352.787266] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9352.787317] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9352.787464] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9352.787515] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9352.787563] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.787616] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9352.787666] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.787744] INFO: task kworker/u16:9:8360 blocked for more than 120
seconds.
[ 9352.787799] Tainted: G E 3.16.0-rc6+ #64
[ 9352.787847] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9352.787949] kworker/u16:9 D ffff88042fd543c0 0 8360 2
0x00000000
[ 9352.788015] Workqueue: btrfs-delalloc normal_work_helper [btrfs]
[ 9352.788139] ffff88035f20f838 0000000000000002 ffff8803216c1930
ffff88035f20ffd8
[ 9352.788229] 00000000000143c0 00000000000143c0 ffff8804157e0000
ffff88042fd54cd8
[ 9352.788317] ffff88042ffad6e8 ffff88035f20f8c0 0000000000000002
ffffffff81159930
[ 9352.788406] Call Trace:
[ 9352.788445] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9352.788495] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9352.788543] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9352.788591] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9352.788642] [<ffffffff8133c8a4>] ? blk_finish_plug+0x14/0x40
[ 9352.788692] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9352.788740] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9352.788792] [<ffffffff8115ac34>] pagecache_get_page+0x164/0x1f0
[ 9352.788849] [<ffffffffc048e447>] io_ctl_prepare_pages+0x67/0x180 [btrfs]
[ 9352.788933] [<ffffffffc048fd0f>] __load_free_space_cache+0x1ff/0x700
[btrfs]
[ 9352.788998] [<ffffffffc049030c>] load_free_space_cache+0xfc/0x1c0
[btrfs]
[ 9352.789059] [<ffffffffc0430292>] cache_block_group+0x192/0x390 [btrfs]
[ 9352.789113] [<ffffffff810b1460>] ? prepare_to_wait_event+0x100/0x100
[ 9352.789173] [<ffffffffc04390a2>] find_free_extent+0xc72/0xcb0 [btrfs]
[ 9352.789233] [<ffffffffc04392ef>] btrfs_reserve_extent+0xaf/0x1b0 [btrfs]
[ 9352.789295] [<ffffffffc04526cc>] cow_file_range+0x13c/0x430 [btrfs]
[ 9352.789355] [<ffffffffc0453c80>] ?
submit_compressed_extents+0x480/0x480 [btrfs]
[ 9352.789444] [<ffffffffc04539d2>]
submit_compressed_extents+0x1d2/0x480 [btrfs]
[ 9352.789533] [<ffffffffc0451524>] ? async_cow_free+0x24/0x30 [btrfs]
[ 9352.789592] [<ffffffffc0453c80>] ?
submit_compressed_extents+0x480/0x480 [btrfs]
[ 9352.789680] [<ffffffffc0453d06>] async_cow_submit+0x86/0x90 [btrfs]
[ 9352.789737] [<ffffffffc047ad43>] normal_work_helper+0x193/0x2b0 [btrfs]
[ 9352.789790] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9352.789840] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9352.789889] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9352.789938] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9352.789984] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.790038] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9352.790088] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.790144] INFO: task kworker/u16:0:11682 blocked for more than 120
seconds.
[ 9352.790199] Tainted: G E 3.16.0-rc6+ #64
[ 9352.795261] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9352.795347] kworker/u16:0 D ffff88042fd543c0 0 11682 2
0x00000000
[ 9352.795409] Workqueue: writeback bdi_writeback_workfn (flush-btrfs-3)
[ 9352.795465] ffff8802161cf9d8 0000000000000002 ffff8803fc3c0000
ffff8802161cffd8
[ 9352.795554] 00000000000143c0 00000000000143c0 ffff8804197e0000
ffff88042fd54cd8
[ 9352.795644] ffff88042ffaa9e8 ffff8802161cfa60 0000000000000002
ffffffff81159930
[ 9352.795734] Call Trace:
[ 9352.795776] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9352.795829] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9352.795879] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9352.795928] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9352.795979] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9352.796029] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9352.796150] [<ffffffffc046711e>] ? flush_write_bio+0xe/0x10 [btrfs]
[ 9352.796212] [<ffffffffc046b0c0>]
extent_write_cache_pages.isra.28.constprop.46+0x3d0/0x3f0 [btrfs]
[ 9352.796309] [<ffffffffc046cd2d>] extent_writepages+0x4d/0x70 [btrfs]
[ 9352.796369] [<ffffffffc04506f0>] ? btrfs_submit_direct+0x6a0/0x6a0
[btrfs]
[ 9352.796428] [<ffffffffc044e1d8>] btrfs_writepages+0x28/0x30 [btrfs]
[ 9352.796481] [<ffffffff811668ee>] do_writepages+0x1e/0x40
[ 9352.796530] [<ffffffff811f17d0>] __writeback_single_inode+0x40/0x210
[ 9352.796581] [<ffffffff811f22b7>] writeback_sb_inodes+0x247/0x3e0
[ 9352.796632] [<ffffffff811f24ef>] __writeback_inodes_wb+0x9f/0xd0
[ 9352.796682] [<ffffffff811f2763>] wb_writeback+0x243/0x2c0
[ 9352.796731] [<ffffffff811f4e09>] bdi_writeback_workfn+0x1b9/0x430
[ 9352.796784] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9352.796833] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9352.796882] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9352.796933] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9352.796979] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.797031] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9352.797079] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.797134] INFO: task kworker/u16:4:13743 blocked for more than 120
seconds.
[ 9352.797189] Tainted: G E 3.16.0-rc6+ #64
[ 9352.797299] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9352.797383] kworker/u16:4 D ffff88042fc943c0 0 13743 2
0x00000000
[ 9352.797451] Workqueue: btrfs-flush_delalloc normal_work_helper [btrfs]
[ 9352.797505] ffff880139843b58 0000000000000002 ffff880191e38000
ffff880139843fd8
[ 9352.797594] 00000000000143c0 00000000000143c0 ffff88041977b260
ffff88042fc94cd8
[ 9352.797684] ffff88042ffb4be8 ffff880139843be0 0000000000000002
ffffffff81159930
[ 9352.797773] Call Trace:
[ 9352.797813] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9352.797865] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9352.797914] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9352.797963] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9352.798013] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9352.798060] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9352.798119] [<ffffffffc046711e>] ? flush_write_bio+0xe/0x10 [btrfs]
[ 9352.798176] [<ffffffffc046b0c0>]
extent_write_cache_pages.isra.28.constprop.46+0x3d0/0x3f0 [btrfs]
[ 9352.798269] [<ffffffffc046cd2d>] extent_writepages+0x4d/0x70 [btrfs]
[ 9352.798326] [<ffffffffc04506f0>] ? btrfs_submit_direct+0x6a0/0x6a0
[btrfs]
[ 9352.798385] [<ffffffffc044e1d8>] btrfs_writepages+0x28/0x30 [btrfs]
[ 9352.798437] [<ffffffff811668ee>] do_writepages+0x1e/0x40
[ 9352.798485] [<ffffffff8115b409>] __filemap_fdatawrite_range+0x59/0x60
[ 9352.798537] [<ffffffff8115b4bc>] filemap_flush+0x1c/0x20
[ 9352.798590] [<ffffffffc045158a>] btrfs_run_delalloc_work+0x5a/0xa0
[btrfs]
[ 9352.798650] [<ffffffffc047accf>] normal_work_helper+0x11f/0x2b0 [btrfs]
[ 9352.798703] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9352.798752] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9352.798801] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9352.798851] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9352.798897] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.798949] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9352.798997] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9352.799049] INFO: task btrfs:13823 blocked for more than 120 seconds.
[ 9352.799101] Tainted: G E 3.16.0-rc6+ #64
[ 9352.799148] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9352.799229] btrfs D ffff88042fd943c0 0 13823 13461
0x00000000
[ 9352.799286] ffff880177203a80 0000000000000002 ffff8800c1a01930
ffff880177203fd8
[ 9352.799375] 00000000000143c0 00000000000143c0 ffff8800c2f664c0
ffff8803d29f2438
[ 9352.799463] ffff8803d29f2440 7fffffffffffffff ffff8800c1a01930
ffff880177203bc0
[ 9352.799552] Call Trace:
[ 9352.799590] [<ffffffff8170eb59>] schedule+0x29/0x70
[ 9352.799637] [<ffffffff8170df99>] schedule_timeout+0x209/0x280
[ 9352.799687] [<ffffffff8109d4a3>] ? wake_up_process+0x23/0x40
[ 9352.799736] [<ffffffff810829f4>] ? wake_up_worker+0x24/0x30
[ 9352.799786] [<ffffffff810836ab>] ? insert_work+0x6b/0xb0
[ 9352.799877] [<ffffffff8170f656>] wait_for_completion+0xa6/0x160
[ 9352.799928] [<ffffffff8109d4e0>] ? wake_up_state+0x20/0x20
[ 9352.799989] [<ffffffffc045b936>]
btrfs_wait_and_free_delalloc_work+0x16/0x30 [btrfs]
[ 9352.800080] [<ffffffffc045bafe>] __start_delalloc_inodes+0x1ae/0x2a0
[btrfs]
[ 9352.800150] [<ffffffffc045bc2e>]
btrfs_start_delalloc_inodes+0x3e/0x120 [btrfs]
[ 9352.800235] [<ffffffff810b1228>] ? finish_wait+0x58/0x70
[ 9352.800293] [<ffffffffc047fa24>] btrfs_mksubvol.isra.29+0x1d4/0x570
[btrfs]
[ 9352.800348] [<ffffffff810b1460>] ? prepare_to_wait_event+0x100/0x100
[ 9352.800409] [<ffffffffc047ff46>]
btrfs_ioctl_snap_create_transid+0x186/0x190 [btrfs]
[ 9352.800501] [<ffffffffc04800ab>]
btrfs_ioctl_snap_create_v2+0xeb/0x130 [btrfs]
[ 9352.800592] [<ffffffffc048218f>] btrfs_ioctl+0xcaf/0x2ae0 [btrfs]
[ 9352.800645] [<ffffffff8118d933>] ? mmap_region+0x163/0x5d0
[ 9352.800696] [<ffffffff81057c8c>] ? __do_page_fault+0x20c/0x550
[ 9352.800748] [<ffffffff811dc840>] do_vfs_ioctl+0x2e0/0x4c0
[ 9352.800798] [<ffffffff810a0e64>] ? vtime_account_user+0x54/0x60
[ 9352.800850] [<ffffffff811dcaa1>] SyS_ioctl+0x81/0xa0
[ 9352.800899] [<ffffffff817130bf>] tracesys+0xe1/0xe6
[ 9354.863323] kvm [4191]: vcpu0 unhandled rdmsr: 0x345
[ 9354.869074] kvm_set_msr_common: 118 callbacks suppressed
[ 9354.869130] kvm [4191]: vcpu0 unhandled wrmsr: 0x680 data 0
[ 9354.869185] kvm [4191]: vcpu0 unhandled wrmsr: 0x6c0 data 0
[ 9354.869240] kvm [4191]: vcpu0 unhandled wrmsr: 0x681 data 0
[ 9354.869294] kvm [4191]: vcpu0 unhandled wrmsr: 0x6c1 data 0
[ 9354.869346] kvm [4191]: vcpu0 unhandled wrmsr: 0x682 data 0
[ 9354.869397] kvm [4191]: vcpu0 unhandled wrmsr: 0x6c2 data 0
[ 9354.869449] kvm [4191]: vcpu0 unhandled wrmsr: 0x683 data 0
[ 9354.869502] kvm [4191]: vcpu0 unhandled wrmsr: 0x6c3 data 0
[ 9354.869556] kvm [4191]: vcpu0 unhandled wrmsr: 0x684 data 0
[ 9354.869610] kvm [4191]: vcpu0 unhandled wrmsr: 0x6c4 data 0
[ 9376.448998] kvm [4191]: vcpu0 unhandled rdmsr: 0x611
[ 9376.449052] kvm [4191]: vcpu0 unhandled rdmsr: 0x639
[ 9376.449100] kvm [4191]: vcpu0 unhandled rdmsr: 0x641
[ 9376.449148] kvm [4191]: vcpu0 unhandled rdmsr: 0x619
[ 9472.705412] INFO: task btrfs-transacti:3874 blocked for more than 120
seconds.
[ 9472.705499] Tainted: G E 3.16.0-rc6+ #64
[ 9472.705547] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9472.705629] btrfs-transacti D ffff88042fc943c0 0 3874 2
0x00000000
[ 9472.705688] ffff8803fb9dfca0 0000000000000002 ffff8800c4214b90
ffff8803fb9dffd8
[ 9472.705778] 00000000000143c0 00000000000143c0 ffff88041977b260
ffff8803d29f23a0
[ 9472.705868] ffff8803d29f23a8 7fffffffffffffff ffff8800c4214b90
ffff880232e2c0a8
[ 9472.705976] Call Trace:
[ 9472.706019] [<ffffffff8170eb59>] schedule+0x29/0x70
[ 9472.706067] [<ffffffff8170df99>] schedule_timeout+0x209/0x280
[ 9472.706118] [<ffffffff8170874b>] ? __slab_free+0xfe/0x2c3
[ 9472.706169] [<ffffffff810829f4>] ? wake_up_worker+0x24/0x30
[ 9472.706219] [<ffffffff8170f656>] wait_for_completion+0xa6/0x160
[ 9472.706270] [<ffffffff8109d4e0>] ? wake_up_state+0x20/0x20
[ 9472.706338] [<ffffffffc045b936>]
btrfs_wait_and_free_delalloc_work+0x16/0x30 [btrfs]
[ 9472.706429] [<ffffffffc04658be>]
btrfs_run_ordered_operations+0x1ee/0x2c0 [btrfs]
[ 9472.706518] [<ffffffffc044bbb7>] btrfs_commit_transaction+0x27/0xa40
[btrfs]
[ 9472.706579] [<ffffffffc0447d65>] transaction_kthread+0x1b5/0x240 [btrfs]
[ 9472.706637] [<ffffffffc0447bb0>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
[ 9472.706720] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9472.706767] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.706820] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9472.706869] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.706926] INFO: task kworker/u16:3:6932 blocked for more than 120
seconds.
[ 9472.706980] Tainted: G E 3.16.0-rc6+ #64
[ 9472.707029] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9472.707112] kworker/u16:3 D ffff88042fd943c0 0 6932 2
0x00000000
[ 9472.707179] Workqueue: btrfs-flush_delalloc normal_work_helper [btrfs]
[ 9472.707233] ffff88035f1bbb58 0000000000000002 ffff880417e564c0
ffff88035f1bbfd8
[ 9472.707322] 00000000000143c0 00000000000143c0 ffff8800c1a03260
ffff88042fd94cd8
[ 9472.707413] ffff88042ffb4be8 ffff88035f1bbbe0 0000000000000002
ffffffff81159930
[ 9472.707502] Call Trace:
[ 9472.707543] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9472.707593] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9472.707643] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9472.707697] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9472.707770] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9472.707820] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9472.707884] [<ffffffffc046711e>] ? flush_write_bio+0xe/0x10 [btrfs]
[ 9472.707947] [<ffffffffc046b0c0>]
extent_write_cache_pages.isra.28.constprop.46+0x3d0/0x3f0 [btrfs]
[ 9472.713000] [<ffffffffc046cd2d>] extent_writepages+0x4d/0x70 [btrfs]
[ 9472.713092] [<ffffffffc04506f0>] ? btrfs_submit_direct+0x6a0/0x6a0
[btrfs]
[ 9472.713148] [<ffffffff810b0d78>] ? __wake_up_common+0x58/0x90
[ 9472.713203] [<ffffffffc044e1d8>] btrfs_writepages+0x28/0x30 [btrfs]
[ 9472.713256] [<ffffffff811668ee>] do_writepages+0x1e/0x40
[ 9472.713305] [<ffffffff8115b409>] __filemap_fdatawrite_range+0x59/0x60
[ 9472.713359] [<ffffffff8115b4bc>] filemap_flush+0x1c/0x20
[ 9472.713425] [<ffffffffc045158a>] btrfs_run_delalloc_work+0x5a/0xa0
[btrfs]
[ 9472.713491] [<ffffffffc047accf>] normal_work_helper+0x11f/0x2b0 [btrfs]
[ 9472.713547] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9472.713598] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9472.713648] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9472.713723] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9472.713794] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.713849] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9472.713898] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.713953] INFO: task kworker/u16:9:8360 blocked for more than 120
seconds.
[ 9472.714028] Tainted: G E 3.16.0-rc6+ #64
[ 9472.714076] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9472.714159] kworker/u16:9 D ffff88042fd543c0 0 8360 2
0x00000000
[ 9472.714225] Workqueue: btrfs-delalloc normal_work_helper [btrfs]
[ 9472.714277] ffff88035f20f838 0000000000000002 ffff8803216c1930
ffff88035f20ffd8
[ 9472.714366] 00000000000143c0 00000000000143c0 ffff8804157e0000
ffff88042fd54cd8
[ 9472.714455] ffff88042ffad6e8 ffff88035f20f8c0 0000000000000002
ffffffff81159930
[ 9472.714544] Call Trace:
[ 9472.714584] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9472.714636] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9472.714684] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9472.714734] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9472.714785] [<ffffffff8133c8a4>] ? blk_finish_plug+0x14/0x40
[ 9472.714835] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9472.714884] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9472.714938] [<ffffffff8115ac34>] pagecache_get_page+0x164/0x1f0
[ 9472.714999] [<ffffffffc048e447>] io_ctl_prepare_pages+0x67/0x180 [btrfs]
[ 9472.715088] [<ffffffffc048fd0f>] __load_free_space_cache+0x1ff/0x700
[btrfs]
[ 9472.715152] [<ffffffffc049030c>] load_free_space_cache+0xfc/0x1c0
[btrfs]
[ 9472.715213] [<ffffffffc0430292>] cache_block_group+0x192/0x390 [btrfs]
[ 9472.715267] [<ffffffff810b1460>] ? prepare_to_wait_event+0x100/0x100
[ 9472.715328] [<ffffffffc04390a2>] find_free_extent+0xc72/0xcb0 [btrfs]
[ 9472.715388] [<ffffffffc04392ef>] btrfs_reserve_extent+0xaf/0x1b0 [btrfs]
[ 9472.715451] [<ffffffffc04526cc>] cow_file_range+0x13c/0x430 [btrfs]
[ 9472.715511] [<ffffffffc0453c80>] ?
submit_compressed_extents+0x480/0x480 [btrfs]
[ 9472.715602] [<ffffffffc04539d2>]
submit_compressed_extents+0x1d2/0x480 [btrfs]
[ 9472.715691] [<ffffffffc0451524>] ? async_cow_free+0x24/0x30 [btrfs]
[ 9472.715748] [<ffffffffc0453c80>] ?
submit_compressed_extents+0x480/0x480 [btrfs]
[ 9472.715835] [<ffffffffc0453d06>] async_cow_submit+0x86/0x90 [btrfs]
[ 9472.715894] [<ffffffffc047ad43>] normal_work_helper+0x193/0x2b0 [btrfs]
[ 9472.715948] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9472.715998] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9472.716047] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9472.716098] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9472.716145] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.716197] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9472.716246] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.716303] INFO: task kworker/u16:0:11682 blocked for more than 120
seconds.
[ 9472.716357] Tainted: G E 3.16.0-rc6+ #64
[ 9472.716405] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 9472.716488] kworker/u16:0 D ffff88042fd543c0 0 11682 2
0x00000000
[ 9472.716548] Workqueue: writeback bdi_writeback_workfn (flush-btrfs-3)
[ 9472.716610] ffff8802161cf9d8 0000000000000002 ffff8803fc3c0000
ffff8802161cffd8
[ 9472.716699] 00000000000143c0 00000000000143c0 ffff8804197e0000
ffff88042fd54cd8
[ 9472.716788] ffff88042ffaa9e8 ffff8802161cfa60 0000000000000002
ffffffff81159930
[ 9472.716878] Call Trace:
[ 9472.716917] [<ffffffff81159930>] ? wait_on_page_read+0x60/0x60
[ 9472.716968] [<ffffffff8170ee6d>] io_schedule+0x9d/0x130
[ 9472.717017] [<ffffffff8115993e>] sleep_on_page+0xe/0x20
[ 9472.717067] [<ffffffff8170f3e8>] __wait_on_bit_lock+0x48/0xb0
[ 9472.717118] [<ffffffff81159a4a>] __lock_page+0x6a/0x70
[ 9472.717167] [<ffffffff810b14a0>] ? autoremove_wake_function+0x40/0x40
[ 9472.717231] [<ffffffffc046711e>] ? flush_write_bio+0xe/0x10 [btrfs]
[ 9472.717293] [<ffffffffc046b0c0>]
extent_write_cache_pages.isra.28.constprop.46+0x3d0/0x3f0 [btrfs]
[ 9472.717402] [<ffffffffc046cd2d>] extent_writepages+0x4d/0x70 [btrfs]
[ 9472.717465] [<ffffffffc04506f0>] ? btrfs_submit_direct+0x6a0/0x6a0
[btrfs]
[ 9472.717553] [<ffffffffc044e1d8>] btrfs_writepages+0x28/0x30 [btrfs]
[ 9472.717607] [<ffffffff811668ee>] do_writepages+0x1e/0x40
[ 9472.717657] [<ffffffff811f17d0>] __writeback_single_inode+0x40/0x210
[ 9472.717710] [<ffffffff811f22b7>] writeback_sb_inodes+0x247/0x3e0
[ 9472.717784] [<ffffffff811f24ef>] __writeback_inodes_wb+0x9f/0xd0
[ 9472.717836] [<ffffffff811f2763>] wb_writeback+0x243/0x2c0
[ 9472.717885] [<ffffffff811f4e09>] bdi_writeback_workfn+0x1b9/0x430
[ 9472.717938] [<ffffffff810858d2>] process_one_work+0x182/0x450
[ 9472.717990] [<ffffffff81086043>] worker_thread+0x123/0x5a0
[ 9472.718039] [<ffffffff81085f20>] ? rescuer_thread+0x380/0x380
[ 9472.718089] [<ffffffff8108cc52>] kthread+0xd2/0xf0
[ 9472.718136] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
[ 9472.718188] [<ffffffff81712dfc>] ret_from_fork+0x7c/0xb0
[ 9472.718237] [<ffffffff8108cb80>] ? kthread_create_on_node+0x180/0x180
--
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