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Date:      Sun, 31 Dec 2023 14:45:11 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 276002] nfscl: data corruption using both copy_file_range and mmap'd I/O
Message-ID:  <bug-276002-3630-p9XDggQFwn@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-276002-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-276002-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276002

--- Comment #29 from Alan Somers <asomers@FreeBSD.org> ---
With kib's latest patch, it's more difficult to produce a miscompare.  But
still possible.  For example, using the toml file from Comment 4 with Seed
9675272854109691020 will crash in 95 steps.

Or, without copy_file_range at all, it's possible to crash in 126 steps usi=
ng
seed 8637402481540764494 and this toml file:

flen =3D 524288
nomsyncafterwrite =3D true
[opsize]
max =3D 131072
min =3D 65536
[weights]
truncate =3D 1
fsync =3D 1
fdatasync =3D 1
punch_hole =3D 0
write =3D 10
read =3D 10

--=20
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