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Date: Sun, 1 Sep 2013 09:26:00 +0800
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Subject: Re: zfs dead lock
From: Kuang-che Wu <kuangche@gmail.com>
To: Andriy Gapon <avg@freebsd.org>
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2013/8/29 Andriy Gapon <avg@freebsd.org>

> on 15/08/2013 21:36 Kuang-che Wu said the following:
> > I suspect I encountered zfs deadlock yesterday.
>
> Thank you very much for the report!  And sorry for the delay.
> Do you still have this locked up system?
> Or are you able to reproduce the lock up?
> I would like to examine some things with kgdb.


After few days of the deadlock, I found my hard drive has bad sectors and
the number is increasing.
I replaced the drive and no more dead locks.
I suspect the dead locks were triggered by slow disk i/o.