* Daniel P. Berrange (berra...@redhat.com) wrote: > On Thu, Jul 06, 2017 at 01:00:53PM +0200, Thomas Huth wrote: > > On 06.07.2017 12:49, Daniel P. Berrange wrote: > > [...] > > > This avoids the user having problems with guest ABI silently changing > > > behind their back, or migration suddenly failing to load vm state, > > > > For proper migration, you've got to specify the right versioned machine > > type anyway, so that should not be an issue here. > > That's only true if you have mis-matched QEMU releases on each host. > If you know you have the same QEMU release everywhere, there's no > need for versioned machine types. Though obviously we'd still recommend > people us versioned machine type, its not unreasonable that some people > will not
We have got protection against machine type screwups; e.g going from -M pc to -M q35 we get: qemu-system-x86_64: Machine type received is 'pc-i440fx-2.9' and local is 'pc-q35-2.9' Dave > Regards, > Daniel > -- > |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| > |: https://libvirt.org -o- https://fstop138.berrange.com :| > |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| > -- Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK