December 23, 20241 yr I'm running Unraid 6.12.10. I have a single SSD cache drive, and an array of HDDs. The cache drive recently went read-only, and logs showed a lot of BTRFS / IO errors. It could be a failing drive, but I've decided to reformat the cache drive as XFS and try again... so, I'm using Mover to move appdata, domains, and system to the array. I will move it all back to the cache once I've reformatted the drive. My question is: currently there is a folder /mnt/cache/system/docker/btrfs/subvolumes which apparently has about 100GB in it. What should happen to that folder once I'm no longer using BTRFS on the cache drive? Is there any point in waiting for Mover to move it back to the XFS-formatted cache? Should I just delete it now? (!) Thanks for the advice.
December 23, 20241 yr Community Expert Solution You don't need to move that, and can recreate the docker image after: https://docs.unraid.net/unraid-os/manual/docker-management/#re-create-the-docker-image-file Then: https://docs.unraid.net/unraid-os/manual/docker-management/#re-installing-docker-applications Also see below if you have any custom docker networks: https://docs.unraid.net/unraid-os/manual/docker-management/#docker-custom-networks
December 23, 20241 yr Author Perfect. Thanks Jorge! It would be worthwhile to add this advice between steps 4 and 5 of https://docs.unraid.net/unraid-os/manual/storage-management/#reformatting-a-cache-drive because Mover takes ages to move that docker folder, and it's not necessary to do so.
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