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Date:      Wed, 23 Jul 2025 01:21:10 +0100
From:      void <void@f-m.fm>
To:        freebsd-current@freebsd.org
Subject:   Re: zfs panic VERIFY3U
Message-ID:  <aIAq9t0LKFhOu5iV@int21h>
In-Reply-To: <CAOtMX2jvORU-_s4xLtgRFum9BD3mWsMRzRTVfDD1yvFa2%2BhC7g@mail.gmail.com>
References:  <aH7pM0iZ-XMihOrn@int21h> <aH7rrH8ISou9vN4k@int21h> <aH-I4-FpfLJgKp3M@int21h> <CAOtMX2jvORU-_s4xLtgRFum9BD3mWsMRzRTVfDD1yvFa2%2BhC7g@mail.gmail.com>

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On Tue, Jul 22, 2025 at 11:46:11AM -0600, Alan Somers wrote:

>Is this still a problem for you, or is it all solved?

Now it is. The fix, for the benefit of archives:

0. pull the "failing" disk from the array
1. comment zfs out of /boot/loader.conf
2. reboot machine, complete make buildworld kernel installkernel world etc
3. add hw.ciss.expose_hidden_physical="1" to loader.conf
4. if this is in sysctl.conf, comment it out
5. poweroff now && unplug from wall socket, wait a few mins
6. turn on & boot machine
7. insert the "failing" disk. See it in /dev

if it needs resilvering, it'll resilver automatically.
Run a zpool scrub afterwards.
-- 


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