Antonios Matsoukas

Thank you for replying I tried what you suggested, umounted the cache, and used btrfs restore, and i still got an error and got half of the img file, as i did with the cp command (although i did use the -i option to ignore errors): root:~# btrfs restore -iv /dev/mapper/sdb1 /mnt/disk1/restore_cache/ Restoring /mnt/disk1/restore_cache/domains Restoring /mnt/disk1/restore_cache/domains/Windows 10 Restoring /mnt/disk1/restore_cache/domains/Windows 10/vdisk1.img Short read for 102430212096, read 8192, read_len 65536 trying another mirror Short read for 102430212096, read 8192, read_len 65536 ERROR: exhausted mirrors trying to read (3 > 2) ERROR: copying data for /mnt/disk1/restore_cache/domains/Windows 10/vdisk1.img failed Done searching /domains/Windows 10 ERROR: searching directory /mnt/disk1/restore_cache/domains/Windows 10/vdisk1.img failed: -1 Done searching /domains ERROR: searching directory /mnt/disk1/restore_cache/domains/Windows 10/vdisk1.img failed: -1

I have a cache pool with 2 ssds on brtfs and today i woke up with all my docker containers and vms stopped. After having a look, i saw a notification with unrecoverable errors on my cache disks, so i moved all appdata and other data away from the cache and onto the array. As the mover seemed not to move everything, i did a scrub on the pool, which fixed most of the errors (but left around 64 unrecoverable errors). I managed to move everything back to the array, all but a 70GB vm img of my blueiris vm. This last file (and most important) i am unable to move to the array. The mover stops with io errors. I tried to cp it manually and after copying around 35GB i got a "cp: error reading 'vdisk1.img': Input/output error" I tried to rsync, but rsync after copying all the data, gave that the verification of the file failed and retries. The thing is that if i start the vm, it works fine. So the corruption must be minimal, yet i am unable to copy the img to the array in order to replace the cache drives. Is there a way to copy the image (even with the small corruption, since it seems to work fine) or repair it somehow ?