Bug 1052336 added notes about required settings for libgfapi to the RHOS4 release notes. I suspect we will want similar information in the configuration reference guide for the GlusterFS driver rather than only in release notes, as it is applicable for any installation using libgfapi. https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/4/html/Configuration_Reference_Guide/GlusterFS-driver.html
This bug is being assigned to Don Domingo, who is now the designated docs specialist for cinder.
For reference: https://bugzilla.redhat.com/show_bug.cgi?id=1044773
Just realized that I had already added this as a step to the GlusterFS backend setup instructions. Those instructions were submitted as part of https://review.openstack.org/#/c/74553/ to address https://launchpad.net/bugs/1281444. Marking as 'patched'.
Changing component as the change was merged to Cloud Admin guide.