Caution
If you roll back a conversion, you will lose any changes that you have made to the btrfs file system. Make a back up of the changes that you want to reapply to the restored file system.
To roll back the conversion of the file system and recover the original file system:
Unmount the btrfs file system and all of its snapshots and images in the reverse order from which you originally mounted them.
#
umount
#temp_mountpoint2
umount
#temp_mountpoint1
/imageumount
mountpoint
Roll back the conversion.
#
btrfs-convert -r
device
Mount the original file system.
#
mount -t ext
N
device
mountpoint