rescue the config

[temporal-agent]

i have a failed upgrade that won't finish booting.  i've tried to reinstall and import the config off the mirrored zfs array, but it can't seem to.  i can't seem to mount the zfs volume in another distro either.

is there any way to rescue the config?

[Patrick M. Hausen]

What does "zpool import" in that other distro say as a result?

[temporal-agent]

ubuntu 24.04:
failed to mount "zroot"
filesystem type zfs_member not configured in kernel

[Patrick M. Hausen]

Try FreeBSD 14.2.

Code Select Expand

zpool importto check if the pool is found.

Code Select Expand

zpool import -o altroot=/mnt zrootto perform the real import and not mount it over your live CD.

[temporal-agent]

FreeBSD was able to mount it, but i can't find it.

[Patrick M. Hausen]

/mnt is read-only in that live session it seems. Try e.g. "mkdir /mnt2" and use that instead. Or "mount -u orw /" before the entire "zpool dance". Something like that, I am not at my computer atm. The error message about "read-only" needs to go away, then you will find the data in /mnt/zroot.

[temporal-agent]

i mounted it in a temp folder, ls -lah says that there is nothing in zroot.

[Patrick M. Hausen]

What does "zfs list" say?