Re: RELENG_13 to 14 upgrade fail (resolved)

On 11/2/2023 12:28 PM, mike tancsa wrote:
> On one of my VMs that I upgraded from RELENG_13 to RELENG_14, I forgot 
> to update the boot loader so now at bootup, I have
> ZFS: unsupported feature: com.klarasystems:vdev_zaps_v2
>
> Can't find /boot/zfsloader
>
> What is the best way to recover from this ? Its a raw vm image. gpart 
> is p1=freebsd-boot, p2=freebsd-swap,p3=freebsd-zfs
>
> I was thinking perhaps start up a second vm thats RELENG_14, mdconfig 
> the image, and then what do I need to do ? Just
>
> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 md0 ?
>
>

A little easier than I though. I just grabbed the 2 files from a 
RELENG_14 image and put them in /tmp on my nfs server where the raw vm 
image is. Then

mdconfig -f problem-vm-image.raw
gpart bootcode -b /tmp/pmbr -p /tmp/gptzfsboot -i 1 md0
mdconfig -d -u 0

and its up and running again

     ---Mike