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Mirror Cache Pool Wont Mount "Unmountable: Unsupported or no file system"

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I have attached the logs but basically, I was getting weird ui behavior, so I rebooted the server and now both of the cache drives wont mount. It says "Unmountable: Unsupported or no file system". I am on 6.12.8 with the latest patch installed. I tried running the following command:

btrfs rescue zero-log /dev/sdb1 and was able to get them to mount but the dockers were not working correctly so I rebooted and now they are unmounted again. I also tried removing both cache drives from the array and then starting the array. After that stop it again and re add them. That was unsuccessful as well. Any help would be appreciated. Thanks!!

unraid-diagnostics-20240228-0013.zip

  • Community Expert
2 hours ago, Drew Miller said:

btrfs rescue zero-log /dev/sdb1

Run this again, it should work, if the pool mounts then backup what you can and re-format it.

  • Author

Same issue, most dockers startup but none of them are accessible. I have a backup, so I basically delete the cache partitions and then setup the mirror again and use the appdata backup plugin to restore from backup?

  • Community Expert
Just now, Drew Miller said:

Same issue, most dockers startup but none of them are accessible.

You would need to post the diags to confirm, but that may just be a corrupt docker image, and if yes it could easily be recreated, but since the pool itself needs to be recreated, there wouldn't be much point.

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