The purpose of this project was to:
1. Introduce "resize" GEOM method, to make it possible for GEOM classes to get notified about resizing providers they are attached to,
2. Making it possible to use "gpart resize" for a currently mounted partitions,
3. Adding UFS suspension mechanism, to make it possible for a userland application to tell the kernel to "back off" from the filesystem and to enable that application to modify the on-disk metadata, and
4. Modifying growfs(8) tool to use that mechanism to enable extending filesystems mounted read-write.
All of that was committed to 10-CURRENT. Changes not related to GEOM (UFS suspension and growfs(8)) were merged to 9-STABLE after 9.1 was branched; they are expected to appear in 9.2-RELEASE.
The project was sponsored by the FreeBSD Foundation.