User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36 Build Identifier: In chapter 28.2 "Expanding GlusterFS-Based Persistent Volume Claims", please add a note that on a volume with existing snapshots, volume changing operations, such as volume expansion, must not be performed. Eventually existing snapshots must be removed before expanding the PVC. Reproducible: Always