John Snow <js...@redhat.com> writes: > On 08/19/2015 02:55 AM, Dr. David Alan Gilbert wrote: >> * Eduardo Habkost (ehabk...@redhat.com) wrote: >>> Migration with q35 was not possible before commit >>> 04329029a8c539eb5f75dcb6d8b016f0c53a031a, because q35 unconditionally >>> creates >>> an ich9-ahci device, that was marked as unmigratable. So all q35 machines >>> before pc-q35-2.4 were unmigratable, and there's no point in keeping >>> compatibility code for them. >>> >>> Remove all old pc-q35 machine classes and keep only pc-q35-2.4. >> >> But doesn't that mean that anyone who has a machine configured with one >> of those machine types will suddenly find it wont start? >> >> Dave >> > > To some extent, all versions of this board prior to 2.4 should be > considered unsupported and we should discourage their use anyway. > > If you really want, I suppose we could just alias them to 2.4 ...
I'd very much prefer an honest "won't start" over a silent change of the machine type. If we really want to bend over backwards for existing uses of these machine types, we could make them error out with "use pc-q35-2.5 instead". Since I don't think they exist outside testing, I wouldn't bother.
