From owner-freebsd-fs@freebsd.org  Wed Oct 28 13:46:54 2015
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Subject: [Bug 203906] ZFS lockup, spa_namespace_lock
Date: Wed, 28 Oct 2015 13:46:54 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203906

fk@fabiankeil.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fk@fabiankeil.de

--- Comment #1 from fk@fabiankeil.de ---
Can you please attach the complete "procstat -kk -a" output?

I suspect that this is the same issue as:
https://lists.freebsd.org/pipermail/freebsd-current/2014-September/052018.html
Analysis continues at:
https://lists.freebsd.org/pipermail/freebsd-current/2015-October/057982.html

If that's the case and if your applications can handle it,
changing the pool's failmode from "wait" to "continue" may be
worth a try.

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