On Wed, Mar 22, 2017 at 8:29 PM, Davide Ferrari <davide@billymob.com> wrote:

2017-03-22 8:09 GMT+01:00 Sahina Bose <sabose@redhat.com>:

A gluster volume cannot span multiple clusters. If you want to create a separate cluster with the Broadwell nodes, then create a new gluster volume using the disks from these nodes - i.e do not expand the existing volume by adding bricks from the new servers.

About this: why?
I mean, from the new cluster I can spawn a VM based on an image stored in the other cluster domain and it works. What's the problem?
Anyway I created a new data domain for that cluster

Each cluster is also created as a gluster trusted storage pool - that is nodes in the cluster are peer probed to each other. A gluster volume can only span one trusted storage pool at a time.