I have a btrfs filesystem that includes 3 disks in raid0:
# btrfs fi show /dev/sdb1 Label: 'disco_backup' uuid: 10726648-202c-4792-82d4-5d0911cce762 Total devices 3 FS bytes used 8.05TiB devid 1 size 3.64TiB used 3.64TiB path /dev/sdb1 devid 2 size 2.73TiB used 2.73TiB path /dev/sdd1 devid 3 size 1.82TiB used 1.82TiB path /dev/sdc1
I uses it as backup. I have a subvolume for the backup and each new backup is a snapshot of the previous one and is updated by rsync.
The filesystem was nearly full. I deleted some snapshots but the disk space was not updated. Then I enabled quotas on the disk for viewing the used space:
# btrfs quota enable /mnt/bacup
When I did this after a few minutes the system hanged (I think due to out of memory). After this, I has not been able to mount the disk. Every time I try to mount it the system hangs.
I added many swap space (300Gb) but it stills hang when mounting. I tried running btrfsck but it does not report errors.
Any help please?