Recovering config files from root of ZFS install

[sapphiron]

Hi All

I am recovering data from a lab server that got borked due to power loss and now kernel panics on boot

I did a new 7.2 install on a separate SSD. Old version was 7.1

I connected the old boot SSD to the system and ran an

zpool import -f rpool rpool_old

to get the disk imported

I then noticed that the disk is mounted on /rpool_old and it contains a ROOT/pve-1 folder. However the folder is blank.

I assume there is some other way that I should be mounting the dataset to make the data accessible?

Here is some additional info about the pool

root@proxmox:/rpool_old/ROOT/pve-1# zfs list
NAME USED AVAIL REFER MOUNTPOINT
rpool 1.94G 106G 96K /rpool
rpool/ROOT 1.94G 106G 96K /rpool/ROOT
rpool/ROOT/pve-1 1.94G 106G 1.94G /
rpool/data 96K 106G 96K /rpool/data
rpool_old 56.4G 1.22G 96K /rpool_old
rpool_old/ROOT 48.6G 1.22G 96K /rpool_old/ROOT
rpool_old/ROOT/pve-1 48.6G 1.22G 48.6G /
rpool_old/data 96K 1.22G 96K /rpool_old/data
rpool_old/swap 7.84G 2.98G 6.08G -

root@proxmox:/rpool_old/ROOT/pve-1# zpool status -v rpool_old
pool: rpool_old
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
scan: scrub repaired 0B in 00:03:29 with 2 errors on Sun Apr 10 00:27:32 2022
config:

NAME STATE READ WRITE CKSUM
rpool_old ONLINE 0 0 0
sdb2 ONLINE 1 0 0

errors: Permanent errors have been detected in the following files:

//usr/share/doc/libglusterd0/changelog.gz
//var/cache/apt/archives/pve-kernel-4.13.4-1-pve_4.13.4-25_amd64.deb
//lib/x86_64-linux-gnu/libc-2.31.so
root@proxmox:/rpool_old/ROOT/pve-1#

Thanks in advance!

 

[leesteken]

I assume you can zpool import the rpool_old but you'll have to choose a different mountpoint because / (root) is already taken by the new rpool.
You will find the ${mountpoint of rpool_old}/etc/pve/ directory empty because the Proxmox configuration is stored in a database.