On 25/08/2017 05:40, Mike Tancsa wrote:
On 8/24/2017 4:01 PM, Mike Tancsa wrote:
OK, this is fairly easy to repeat. If I start a sync of a snapshot via
zrep, it hangs the box. CTRL+T shows
DEBUG: overiding stale lock on zroot/chyves from pid 19378
sending zroot/chyves@zrep_000010 to 10.151.9.2:zroot/chyves
cannot receive new filesystem stream: destination
'zroot/chyves/guests/resi/disk1' exists
must specify -F to overwrite it
Are you sending a snapshot from the host to the guest?
or is the guest sending to the host?
load: 0.48 cmd: zfs 29690 [tx->tx_sync_done_cv] 358.94r 0.00u 0.00s 0%
3476k
load: 0.48 cmd: zfs 29690 [tx->tx_sync_done_cv] 360.42r 0.00u 0.00s 0%
I was able to get ps to run and not sure if its helpful or not, but
these are the two unkillable zfs processes
root 5 0.0 0.0 0 128 - DL 10:09 0:05.58
[zfskern]
root 29683 0.0 0.0 7752 3824 5 DE+ 15:53 0:00.32 zfs
send -R -I zroot/chyves@zrep_00000d zroot/chyves@zrep_000010
root 29690 0.0 0.0 7752 3492 5 D+ 15:53 0:00.00 zfs
rename zroot/chyves@zrep_000010 zroot/chyves@zrep_000010_unsent
Should be unrelated but several years ago there was a deadlock issue
when renaming a zvol, unless the fix got undone recently this may just
be a distraction or a hint of a solution...
https://svnweb.freebsd.org/base?view=revision&revision=272474
--
FreeBSD - the place to B...Storing Data
Shane Ambler
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