For what it's worth, there's a patch series that went into master and is under review for backport to Ocata that might help: https://review.openstack.org/#/q/topic:bug/1686116 Chris On 07/27/2017 12:30 PM, Ignazio Cassano wrote: > The instance boots from a volume. > Fails attacching a second volume. > A guy suggested to use hw_disk_bus=virtio and it works. > Regards > > Il 27/Lug/2017 05:33 PM, "Chris Friesen" <chris.friesen at windriver.com > <mailto:chris.friesen at windriver.com>> ha scritto: > > On 07/27/2017 08:44 AM, Ignazio Cassano wrote: > > Hello All, > instance created from images with the following metadata: > > hw_disk_bus=scsi > hw_scsi_model=virtio-scsi > > do not allow to attach new volume. > > Deletting the above metadata in the image and creating a new instance, > it allows > new volume attachment. > > I got the same behaviour on all openstack releases from liberty to ocata. > Regards > Ignazio > > > How does it fail? Does it behave differently if you try to boot an instance > from such a volume? (As opposed to attaching a volume to a running instance.) > > Chris > > > _______________________________________________ > OpenStack-operators mailing list > OpenStack-operators at lists.openstack.org > <mailto:OpenStack-operators at lists.openstack.org> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators > <http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators> >