This was discussed in this openstack-dev thread [1]. Basically, there is more demand for RBD multi-site replication as compared to RBD multi-attach and the two features would be mutually exclusive. Therefore, RBD multi-attach is disabled for now until a future OpenStack release. What's your use-case for Cinder multi-attach? I've heard examples like putting OCFS2 on the volume to share a filesystem, but for that example I would just point out the Manila OpenStack service. [1] https://www.mail-archive.com/openstack-dev@xxxxxxxxxxxxxxxxxxx/msg117834.html On Wed, Apr 18, 2018 at 2:09 AM, Jaze Lee <jazeltq@xxxxxxxxx> wrote: > Hello, > Openstack cinder is disable multi-attach volume for rbd backend, > here is the link > https://bugs.launchpad.net/cinder/+bug/1535815. I do not very > understand which feature > need to be checked as described in that link. And what's the impact if > that features turned on on cinder multi-attach volumes. > Thanks a lot. > > > > -- > 谦谦君子 > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Jason -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
