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Subject: [Bug 222734] 11.1-RELEASE kernel panics while importing ZFS pool
Date: Mon, 02 Oct 2017 10:38:42 +0000
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X-Bugzilla-Version: 11.1-RELEASE
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222734

--- Comment #1 from Andriy Gapon <avg@FreeBSD.org> ---
Could you please try to obtain a crash dump with 11.1 ?
You can set dumpdev parameter in /boot/loader.conf to a suitable value if y=
ou
have a dedicated dump partition or a swap partition.
E.g.:
dumpdev=3D"gpt/7660D.swap"
dumpdev=3D"ada0p2"
etc.
Then you can boot back to 11.0 to get the crash dump extracted and saved.

As to the issue itself... It's possible that you have some bad data with
correct checksum on disk (no guesses on how it came to be).  The older ZFS =
code
is not as thorough in validating the data.  The scrub does not detect it
because the checksum is correct.

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