> On Nov 3, 2023, at 12:36 AM, mike tancsa <[email protected]> wrote: > > 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
For the UEFI boot, the process to upgrade the boot loader is different. I once made a mistake (I forgot the VM is UEFI bios), and overwrite the total ESP partition, then the VM refused to boot (certainly). So probably we want a SMART hint when upgrading zfs pool is done. > mdconfig -d -u 0 > > and its up and running again > > ---Mike Best regards, Zhenlei
