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ZFS cache pool unmountable: Unsupported or no file system

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Hi there,

 

I recently set up and have been experimenting with a ZFS cache pool with 3 ssd drives in a raid 0 configuration. I had an unclean shutdown today and now with the array online it's showing that the ZFS cache pool is unmountable: unsupported or no file system. It's prompting me to format the drives and create a new file system but I'd like to avoid that if at all possible.

 

I would appreciate any help with this matter. I can upload a diagnostic report if required. 

 

Thanks in advance. 

Solved by JorgeB

  • Community Expert

Please start the array and post the diagnostics and the output of

zpool import


 

  • Author

   pool: cache
     id: 10620616154523725933
  state: UNAVAIL
status: One or more devices contains corrupted data.
 action: The pool cannot be imported due to damaged devices or data.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-5E
 config:

        cache       UNAVAIL  insufficient replicas
          nvme0n1   UNAVAIL  invalid label
          sdb       UNAVAIL  invalid label
          sdc       UNAVAIL  invalid label

  • Community Expert
  • Solution

Pool metadata is damaged, you will need to recreate the pool and restore the data from a backup.

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