20.12.5 Recovering an Original Non-root File System

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/image
# umount mountpoint
```
Roll back the conversion.
```
# btrfs-convert -r device
```
Mount the original file system.
```
# mount -t extN device mountpoint
```