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Date:      Thu, 25 Oct 2018 15:39:42 +0000
From:      bugzilla-noreply@freebsd.org
To:        geom@FreeBSD.org
Subject:   [Bug 232671] [gmirror] gmirror fails to recover from degraded mirror sets in some circumstances
Message-ID:  <bug-232671-14739-2I7CZthqUt@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-232671-14739@https.bugs.freebsd.org/bugzilla/>
References:  <bug-232671-14739@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D232671

--- Comment #2 from Mark Johnston <markj@FreeBSD.org> ---
Nice.  JFYI, there's a number of test cases in tests/sys/geom/class/mirror
which attempt to reproduce issues like the one you described.

Regarding the proposed fix, check out r306743.  It aimed to fix a
similar-sounding problem.  I think it's not quite sufficient in that we make
the decision to transition to RUNNING before checking for broken disks.  In=
 the
scenario you described, it sounds like we should transition back to STARTING
and wait for a third disk to arrive.

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