Hi, For the release -7, we have tested the rolling upgrade of Gluster from various versions of Gluster we support. We tried upgrading from release 4, 5, and 6 to release 7 with on going IOs. As well as using various volume types. We did come across a few issues which were fixed. And we are happy to announce that the upgrade to release 7 works fine. -- Regards, Hari Gowtham.