[6.12.2] unable to mount zfs: removing nonexistent segment from range tree

Looks like the pool is corrupted, see if it can be imported in read-only mode, if yes backup and re-create:

 

zpool import -o readonly=on cache

 

If it mounts read-only you can then start the array to access your other storage, but cache will still appear unmountable in the GUI.

I could not directly fix the issue, but I was able to access recover all of my data.

 

I used the terminal:

@MCP:~# zpool import

   pool: cache
     id: 12239425747297594656
  state: ONLINE
 action: The pool can be imported using its name or numeric identifier.
 config:

        cache          ONLINE
          raidz1-0     ONLINE
            nvme0n1p1  ONLINE
            nvme1n1p1  ONLINE
            sde1       ONLINE

'zpool settings' for whatever reason thought nothing was wrong with my zfs pool, but mounting it with 'zpool import cache' caused a kernel panic which caused the entire system to hang,

@MCP:~# zpool import -o readonly=on cache

This allowed me to mount the cache pool as read only. I then used the file manager to copy all of my data to a USB drive. Then I deleted the zfs cache pool and re created it.

 

I don't know what caused my pool to corrupt, but the issue has been solved. I will set the status to closed.

Changed Status to Solved

Changed Priority to Other

I have the same problem. Not sure what happened but all my pools got corrupted and had files corrupted in them. I suspect some kind of memory error but from my tests all hw is ok. I'm using most enterprise hw and have battery backup.BRTFS had fixed the errors on the fs and all files are ok but ZFS all those corrupted files are lost(can't even copy them,disks are ok). These are backup files so no big deal but I'm getting rid of ZFS because of this behavior .