Hello, I have an array with 2 drives, 1 parity and 1 disk with zfs filesystem. I woke up then just learned my server crashed. It is now up and running but disk1 can't be mounted - Unmountable: Unsupported or no file system. I've had some errors, something in the like of ICRC Abort, appear before this but I reconnected the wires of drives and they seem to have gone. 

 

Diagnostics are uploaded below.

 

Thank you!

 

Edit: It might be worth noting I'm running Unraid through proxmox, usb drive and SATA controllers passed through.

tower-diagnostics-20250202-1346.zip

Edited February 2, 20251 yr by Ozenzo
add info

Post the output from

zpool import

 

Here is the ouput:

root@Tower:~# zpool import
   pool: disk1
     id: 16282578758468177107
  state: ONLINE
 action: The pool can be imported using its name or numeric identifier.
 config:

        disk1       ONLINE
          md1p1     ONLINE

 

Now type

zpool import disk1

if there's an error, post it

Here's the output:

root@Tower:~# zpool import disk1
cannot import 'disk1': insufficient replicas
        Destroy and re-create the pool from
        a backup source.

 

Does this mean files are no more?

Possibly, try in read-only mode

 

zpool import -o readonly=on disk1

 

That's unfortunate. The same error appears.

 

Next step would be to probably format and rebuild?

Since you have only one disk, parity will be a mirror, but likely will also have the same issue, with the array stopped, temporarily offline disk1 with

 

echo 1 > /sys/block/sdX/device/delete

 

Wait a few seconds, then try zpool import again.

 

If it doesn't work, you can reboot to bring disk1 back online.

 

echo 1 > /sys/block/sdX/device/delete

sdX is changed to the unmountable disk (sdc) or execute code as is?

Yes, sorry, change to sdc for disk1.

No worries.

 

Here's the output:

root@Tower:~# echo 1 > /sys/block/sdc/device/delete
root@Tower:~# zpool import
   pool: disk1
     id: 16282578758468177107
  state: ONLINE
 action: The pool can be imported using its name or numeric identifier.
 config:

        disk1       ONLINE
          sdb1      ONLINE
root@Tower:~# zpool import disk1
cannot import 'disk1': one or more devices is currently unavailable

 

try:

zpool import -o readonly=on -d /dev/sdb1 disk1

 

This is after I stop the array and echo 1 > /sys/block/sdc/device/delete?

 

Edit:

Here's the output

root@Tower:~# echo 1 > /sys/block/sdc/device/delete
root@Tower:~# zpool import
   pool: disk1
     id: 16282578758468177107
  state: ONLINE
 action: The pool can be imported using its name or numeric identifier.
 config:

        disk1       ONLINE
          sdb1      ONLINE
root@Tower:~# zpool import -o readonly=on -d /dev/sdb1 disk1
cannot import 'disk1': insufficient replicas
        Destroy and re-create the pool from
        a backup source.

 

Edited February 2, 20251 yr by Ozenzo

I'm afraid that you will need to reformat and restore from a backup, if there's no backup, you could try a file recovery app, like UFS explorer.

The parity drive cannot be mounted also?

Yes, it has the same issue, which was kind of expected, since parity should be in sync with the other disk.