Re: zfs panic VERIFY3U

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.
--