Hi, I didn't mean to hijack the other thread so I'll start a new one. There are some pages I found incl. Gorkas article [1], but I don't really understand yet how to configure it. We don't use any of the automated deployments (we created our own) like TripleO etc., is there any guide showing how to setup cinder-volume active/active? I see in my lab environment that python3-tooz is already installed on the control node, but how do I use it? Besides the "cluster" config option in the cinder.conf (is that defined when setting up the DLM?) what else is required? I also found this thread [2] pointing to the source code, but that doesn't really help me at this point. Any pointers to a how-to or deployment guide would be highly appreciated! Thanks, Eugen [1] https://gorka.eguileor.com/a-cinder-road-to-activeactive-ha/ [2] https://www.mail-archive.com/openstack@lists.openstack.org/msg18385.html