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Date:      Thu, 30 Nov 2023 00:04:53 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 275308] EN tracking issue for potential ZFS data corruption
Message-ID:  <bug-275308-3630-sM0DkAiEps@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-275308-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-275308-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275308

--- Comment #20 from Rob Norris <robn@despairlabs.com> ---
(In reply to Troels Just from comment #17)

> would it be beneficial to do "zpool create ... -o feature@block_cloning=
=3Ddisabled" ? Does that provide any benefit over the sysctl you mentioned?

Disabling the feature makes the pool unable to clone blocks at all when ask=
ed
to do so. Disabling the sysctl makes it impossible to ask at all. On the sa=
me
system its much of a muchness, but if you move pools to other systems, that=
 may
make a difference - the pool feature state will move with the pool, but the
sysctl is bound to the host.

> Is [#15333 about ZFS on LUKS] is in any way applicable on FreeBSD when ru=
nning ZFS on top of GELI?

No, totally unrelated.

(In reply to Anderson Guzman from comment #19)

> [2.2] dmu_buf_will_clone: fix race in transition back to NOFILL

Its the fix for the cloning lock bug I mentioned right at the start, but we
think there are still cloning bugs around. Cloning will remain disabled in
2.2.x for now.

--=20
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