This recommended update provides version 0.6.21 for fsarchiver:

- Update to 0.6.21.
* Removed duplicate types definitions in order to fix compilation
errors.
* Attempt to unmount a device four times before failing.
- Changes in 0.6.20.
* Detect version of XFS filesystems in order to preserve it when
they are restored.
* Add support for XFS filesystems features introduced in XFS
version 5.
* Make sure the UUIDs of XFS filesystems are always preserved.
- Fix boo#961053 (improve XFS support).
- Update fsarchiver-types.patch: partially fixed upstream.
- Correct source URL.
- Install more docs.

- Add fsarchiver-attr.patch: remove dependency on libattr..it was
never linked anyway, things still worked because glibc provides
the same interface.