Yesterday, when I upgraded the unraid system (from 6.8.2 to 6.8.3), I copied the config folder from the boot USB drive, and then made the unriad v6.8.3 boot USB drive and replaced the config folder with the backup folder. After the boot, the cache array did not start as I expected, cache1 started normally, cache2-5 was not loaded, and then I stopped the cache array, The cache array is re-selected in order, but the warning "UNMOUNTABLE: no file system (no Btrfs devices)". The "array operation" prompts that I should format the cache1 disk. What should I do? If I format the cache1 disk, can the data in the cache array be recovered?