On Tue, Jun 20, 2017 at 04:12:03PM -0700, Marc MERLIN wrote: > Given that check --repair ran clean when I ran it yesterday after this first > happened, > and I then ran mount -o clear_cache , the cache got rebuilt, and I got the > problem again, > this is not looking good, seems like a persistent bug :-/ > > I'm now going to remount this with nospace_cache to see if your guess about > space_cache was correct.
Now, it seems that disabling the cache is causing some serious hangs:
[ 2055.473113] INFO: task kworker/u16:17:7579 blocked for more than 120 seconds.
[ 2055.496148] Tainted: G U
4.11.6-amd64-preempt-sysrq-20170406 #6
[ 2055.520611] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 2055.545675] kworker/u16:17 D 0 7579 2 0x00000080
[ 2055.563626] Workqueue: writeback wb_workfn (flush-btrfs-4)
[ 2055.581458] Call Trace:
[ 2055.590154] __schedule+0x4ef/0x627
[ 2055.602830] schedule+0x89/0x9a
[ 2055.613618] io_schedule+0x16/0x38
[ 2055.625324] wait_on_page_bit_common+0xd8/0x151
[ 2055.640413] ? inode_to_bdi+0x35/0x35
[ 2055.653701] __lock_page+0x40/0x42
[ 2055.665431] lock_page+0x19/0x1c
[ 2055.676315] extent_write_cache_pages.constprop.31+0x173/0x368
[ 2055.695049] ? update_load_avg+0x227/0x3c6
[ 2055.708592] ? update_load_avg+0x3b1/0x3c6
[ 2055.722340] ? list_add+0x1a/0x34
[ 2055.733520] ? cfs_rq_throttled.isra.24+0xd/0x1d
[ 2055.748503] ? update_cfs_shares+0x2e/0xcf
[ 2055.761891] extent_writepages+0x5b/0x80
[ 2055.774854] ? __percpu_counter_compare+0x29/0x72
[ 2055.790054] ? insert_reserved_file_extent.constprop.41+0x28e/0x28e
[ 2055.809869] btrfs_writepages+0x28/0x2a
[ 2055.822516] do_writepages+0x20/0x29
[ 2055.834251] __writeback_single_inode+0x8a/0x328
[ 2055.849159] ? inode_cgwb_enabled+0xd/0x3b
[ 2055.862521] writeback_sb_inodes+0x22e/0x400
[ 2055.876310] __writeback_inodes_wb+0x6e/0xb0
[ 2055.890057] wb_writeback+0x163/0x2ca
[ 2055.902436] wb_workfn+0x1f7/0x2bf
[ 2055.913520] ? wb_workfn+0x1f7/0x2bf
[ 2055.925090] ? __switch_to+0x2c8/0x45f
[ 2055.937184] process_one_work+0x193/0x2b0
[ 2055.950034] ? rescuer_thread+0x2b1/0x2b1
[ 2055.962833] worker_thread+0x1e9/0x2c1
[ 2055.974826] ? rescuer_thread+0x2b1/0x2b1
[ 2055.988016] kthread+0xfb/0x100
[ 2055.998183] ? init_completion+0x24/0x24
[ 2056.010902] ? do_syscall_64+0x77/0x7d
[ 2056.022802] ret_from_fork+0x2c/0x40
[ 2056.034224] INFO: task rsync:27554 blocked for more than 120 seconds.
[ 2056.054213] Tainted: G U
4.11.6-amd64-preempt-sysrq-20170406 #6
[ 2056.077611] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 2056.101705] rsync D 0 27554 27526 0x20020080
[ 2056.119102] Call Trace:
[ 2056.127019] __schedule+0x4ef/0x627
[ 2056.138385] schedule+0x89/0x9a
[ 2056.148616] io_schedule+0x16/0x38
[ 2056.159682] wait_on_page_bit_common+0xd8/0x151
[ 2056.173787] ? inode_to_bdi+0x35/0x35
[ 2056.185336] __lock_page+0x40/0x42
[ 2056.196176] lock_page+0x19/0x1c
[ 2056.206420] extent_write_cache_pages.constprop.31+0x173/0x368
[ 2056.224786] ? _raw_read_unlock+0xe/0x1e
[ 2056.237221] ? btrfs_set_lock_blocking_rw+0x9a/0x9d
[ 2056.252388] extent_writepages+0x5b/0x80
[ 2056.264687] ? insert_reserved_file_extent.constprop.41+0x28e/0x28e
[ 2056.284051] btrfs_writepages+0x28/0x2a
[ 2056.296117] do_writepages+0x20/0x29
[ 2056.307426] __filemap_fdatawrite_range+0x97/0xc3
[ 2056.322374] filemap_flush+0x1c/0x1e
[ 2056.333627] btrfs_rename2+0x894/0xf6f
[ 2056.345376] ? capable_wrt_inode_uidgid+0x3f/0x4e
[ 2056.359977] ? generic_permission+0x11e/0x175
[ 2056.373719] vfs_rename+0x234/0x391
[ 2056.384805] ? vfs_rename+0x234/0x391
[ 2056.396341] SYSC_renameat2+0x327/0x448
[ 2056.408349] SyS_rename+0x1e/0x20
[ 2056.418806] do_fast_syscall_32+0xb7/0xfe
[ 2056.431325] entry_SYSENTER_compat+0x4c/0x5b
[ 2056.444642] RIP: 0023:0xf76feb39
[ 2056.454861] RSP: 002b:00000000ffe177bc EFLAGS: 00000292 ORIG_RAX:
0000000000000026
[ 2056.478081] RAX: ffffffffffffffda RBX: 00000000ffe18890 RCX: 00000000ffe1a890
[ 2056.500019] RDX: 0000000000000001 RSI: 00000000ffe1a890 RDI: 0000000000000003
[ 2056.521948] RBP: 00000000ffe177f8 R08: 0000000000000000 R09: 0000000000000000
[ 2056.543858] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 2056.565809] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
signature.asc
Description: Digital signature
