[Bug 229614] ZFS lockup in zil_commit_impl

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229614

--- Comment #9 from Andreas Sommer <andreas.sommer87 at googlemail.com> ---
Saw this again just now, after having reinstalled the whole instance on July
10th (12 days "incubation time" :P). Again, I could see the steady CPU usage
(spinlock) in AWS CloudWatch monitoring graphs. Doing `procstat -kk` on the
buildbot master process gave `procstat: sysctl: kern.proc.kstack: 67301: Device
busy`, while `procstat -kka` made the system unavailable and rebooted. Thus, no
further info collected apart from the knowledge that this also happens for
ashift=12 (originally I had an ashift=9 pool on the old instance which had this
problem every few days).

Anything more we can do to debug/resolve this?

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