On Wed, Jan 10, 2018 at 04:43:22PM +0000, Nir Soffer wrote: > On Wed, Jan 10, 2018 at 4:04 PM Kashyap Chamarthy <kcham...@redhat.com> > wrote:
[...] > > Yes, for completness' sake, Nova upstream is already patched to use the > > `qemu-img` '--force-share' flag that comes with QEMU >= 2.10. > > > > What abut users running released Nova, upgrading to 2.10? There are three stable Nova branches at any time, in various phases. It is already backported to the current newest stable Nova branch (where all bug fixes that meet certain criteria are accepted). Then there are two other stable releases. One is in "Only critical bugfixes and security patches" phase; the other is in "Only security patches" phase. So this change wasn't backported there, and users would be using QEMU 2.9 or below with those two versions of Nova. -- /kashyap