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Date:      Sat, 13 Feb 2021 04:53:07 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 253158] Panic: snapacct_ufs2: bad block - Non-suJ mksnap_ffs(8) crash
Message-ID:  <bug-253158-3630-ZA5S7csHTj@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-253158-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-253158-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253158

--- Comment #24 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to Cy Schubert from comment #23)
I think it is combination of the filesystem size and something that I do not
currently quite understand in the ffs snapshot code that makes UFS_BALLOC()
to return buffer of full block size, but only with the first page populated,
instead of all 8 pages.

The buffer should be pointed to by bp, and belongs to the vnode carrying the
ip inode.

So I want/need the data I asked for.  Might be Kirk has an idea from the
description above.

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