ZFS mount fails after upgrade to 11.0

Vladislav Prodan universite at ukr.net
Sat Dec 17 21:26:26 UTC 2016

Compare the list of modules in the /boot/kernel and /boot/kernel.old
Show output: zpool status

 --- Original message ---
 From: "Erwan Legrand" <freebsd at erwanlegrand.com>
 Date: 17 December 2016, 19:45:34

> I am upgrading a FreeBSD 10.3 AMD64 system with a ZFS root to 11.0
> with freebsd-update. After the first reboot, mounting root fails with
> the following error:
> """
> Solaris: NOTICE: cannot find the pool label for 'tank'
> Mounting from zfs:tank/root failed with error 5.
> """
> Moreover, I can't type anything in the "mountroot>" prompt. My USB
> keyboard does not appear to be recognized at this point, although it
> worked with the boot loaded.
> If I select the old kernel in the boot loader, the root filesystem is
> mounted successfully and the system boot as usual.
> Any suggestions regarding how to debug/fix this?
> Thanks,
> Erwan Legrand

 Vladislav V. Prodan
 System & Network Administrator

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