Public bug reported:
zfs send stop working. the process did not produce output. checked by
mbuffer log
in kernel.log:
Oct 15 07:25:53 zfs-cis kernel: [479439.151281] INFO: task zfs:8708 blocked for
more than 120 seconds.
Oct 15 07:25:53 zfs-cis kernel: [479439.156980] Tainted: P OE
4.4.0-96-generic #119-Ubuntu
Oct 15 07:25:53 zfs-cis kernel: [479439.162688] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 15 07:25:53 zfs-cis kernel: [479439.173974] zfs D
ffff88197bd77318 0 8708 8141 0x00000000
Oct 15 07:25:53 zfs-cis kernel: [479439.173981] ffff88197bd77318
ffffffff810c3dc2 ffff8820374cf000 ffff881b645ff000
Oct 15 07:25:53 zfs-cis kernel: [479439.173985] ffff88197bd78000
0000000000792c6d ffff882030aa4ac8 0000000000000000
Oct 15 07:25:53 zfs-cis kernel: [479439.173989] ffff88101dac1840
ffff88197bd77330 ffffffff8183f165 ffff882030aa4a00
Oct 15 07:25:53 zfs-cis kernel: [479439.173993] Call Trace:
Oct 15 07:25:53 zfs-cis kernel: [479439.174006] [<ffffffff810c3dc2>] ?
__wake_up_common+0x52/0x90
Oct 15 07:25:53 zfs-cis kernel: [479439.174023] [<ffffffff8183f165>]
schedule+0x35/0x80
Oct 15 07:25:53 zfs-cis kernel: [479439.174045] [<ffffffffc03d7cb0>]
taskq_wait_id+0x60/0xb0 [spl]
Oct 15 07:25:53 zfs-cis kernel: [479439.174051] [<ffffffff810c4480>] ?
wake_atomic_t_function+0x60/0x60
Oct 15 07:25:53 zfs-cis kernel: [479439.174115] [<ffffffffc05036b0>] ?
dump_write+0x230/0x230 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174178] [<ffffffffc0542022>]
spa_taskq_dispatch_sync+0x92/0xd0 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174223] [<ffffffffc0502b81>]
dump_bytes+0x51/0x70 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174267] [<ffffffffc050359e>]
dump_write+0x11e/0x230 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174311] [<ffffffffc0505523>]
backup_cb+0x633/0x850 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174356] [<ffffffffc050777a>]
traverse_visitbp+0x47a/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174365] [<ffffffffc03d497f>] ?
spl_kmem_alloc+0xaf/0x190 [spl]
Oct 15 07:25:53 zfs-cis kernel: [479439.174409] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174462] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174503] [<ffffffffc050848f>]
traverse_dnode+0x7f/0xe0 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174542] [<ffffffffc05079cc>]
traverse_visitbp+0x6cc/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174579] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174616] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174653] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174690] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174726] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174762] [<ffffffffc05078c0>]
traverse_visitbp+0x5c0/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174799] [<ffffffffc050848f>]
traverse_dnode+0x7f/0xe0 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174835] [<ffffffffc0507b65>]
traverse_visitbp+0x865/0x960 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174871] [<ffffffffc0507e0e>]
traverse_impl+0x1ae/0x410 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174908] [<ffffffffc0504ef0>] ?
dmu_recv_end_check+0x210/0x210 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174944] [<ffffffffc05080c2>]
traverse_dataset+0x52/0x60 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.174981] [<ffffffffc0504ef0>] ?
dmu_recv_end_check+0x210/0x210 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.175017] [<ffffffffc0502fa9>]
dmu_send_impl+0x409/0x560 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.175060] [<ffffffffc0505a22>]
dmu_send_obj+0x172/0x1e0 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.175129] [<ffffffffc0572389>]
zfs_ioc_send+0xe9/0x2c0 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.175143] [<ffffffffc03d489b>] ?
strdup+0x3b/0x60 [spl]
Oct 15 07:25:53 zfs-cis kernel: [479439.175207] [<ffffffffc057670b>]
zfsdev_ioctl+0x44b/0x4e0 [zfs]
Oct 15 07:25:53 zfs-cis kernel: [479439.175218] [<ffffffff81223faf>]
do_vfs_ioctl+0x29f/0x490
Oct 15 07:25:53 zfs-cis kernel: [479439.175225] [<ffffffff8108061c>] ?
_do_fork+0xec/0x360
Oct 15 07:25:53 zfs-cis kernel: [479439.175232] [<ffffffff81224219>]
SyS_ioctl+0x79/0x90
Oct 15 07:25:53 zfs-cis kernel: [479439.175242] [<ffffffff81843272>]
entry_SYSCALL_64_fastpath+0x16/0x71
** Affects: zfs-linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1723948
Title:
error -lock in zfs send
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