I use Ubuntu 22.04 LTS with ZFS. A few days ago on, I was running out of space, so I deleted a one year old zfs backup to free up 80+GB of space. I didn't really know what I was doing, and when I saw warning messages saying I shouldn't delete this old snapshot because it has "child" snapshots, I deleted them anyway because those "child" snapshots were over a year old.The computer worked fine that day, and the day after.
However today when I turned on my system and tried to login, I got caught in a login loop. I loaded an earlier ZFS snapshot from GRUB and still the issue persisted. I cannot log into Ubuntu X11, but can on Wayland.
When I log into Ubuntu with Wayland, I cannot access any files, and it says my home folder is empty. I can see shortcuts to programs in the start menu, but none of the programs open. How do I fix my corrupted ZFS filesystem? Is there anyway to recover the data?
The zpool list command gives the following output:
bpool 1.88G 1.71G 168M - - 46% 91% 1.00x ONLINE -rpool 920G 83.5G 836G - - 13% 9% 1.00x ONLINE - The zpool import command gives this output (which I have shortened)
NAME USED AVAIL REFER MOUNTPOINTbpool 1.38G 381M 96K /bootbpool/BOOT 1.38G 381M 96K nonebpool/BOOT/ubuntu_5un9op 340M 381M 370M /bootbpool/BOOT/ubuntu_80copr 340M 381M 370M /bootbpool/BOOT/ubuntu_8qx30p 340M 381M 370M /bootbpool/BOOT/ubuntu_yjchzg 388M 381M 388M /bootrpool 81.2G 810G 192K /rpool/ROOT 80.5G 810G 192K nonerpool/ROOT/ubuntu_5un9op 3.15G 810G 10.8G /rpool/ROOT/ubuntu_5un9op/srv 0B 810G 192K /srvrpool/ROOT/ubuntu_5un9op/usr 192K 810G 192K /usrrpool/ROOT/ubuntu_5un9op/usr/local 192K 810G 348K /usr/local