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Date:      Thu, 14 Feb 2019 16:21:39 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 235683] [zfs] Panic during data access or scrub on 12.0-STABLE r343904 (blkptr at <addr> DVA 0 has invalid OFFSET)
Message-ID:  <bug-235683-3630-g9wPvJskOd@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235683-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235683-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235683

--- Comment #12 from Andriy Gapon <avg@FreeBSD.org> ---
(In reply to Eugene Grosbein from comment #10)
(In reply to Sergey Anokhin from comment #11)

ZFS scrub repairs only blocks with bad checksums or otherwise unreadable
blocks.
ZFS scrub does not analyze and thus does not fix any logical inconsistencie=
s.
If bad data has a correct checksum, then at present ZFS cannot fix it.
Sometimes it can recognize that the data is bad and report an error, someti=
mes
it has no option but to panic, but sometimes it cannot even tell if it's bad
data.

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