Unclear paragraph in 8.2. In-Service Software Upgrade from Red Hat Gluster Storage 3.2 to Red Hat Gluster Storage 3.3

8.2.3. In-Service Software Upgrade
11. Perform the following operations to change the Automatic File Replication extended attributes so that the heal process happens from a brick in the replica subvolume to the thin provisioned brick.

The whole paragraph is not clear.
e.g. "Create a FUSE mount point from any server to edit the extended attributes. Extended attributes cannot be edited using the NFS and CIFS mount points." - what FUSE mount? which server? what directory ?

should this be done for all bricks or just one or some?