On 02/18/16 19:24, Paolo Bonzini wrote: > > > On 18/02/2016 18:54, Alexandre DERUMIER wrote: >> Hi, >> >> I (and promox users) have same problem than this bugreport >> >> https://bugs.launchpad.net/qemu/+bug/1536487 >> https://forum.proxmox.com/threads/cant-live-migrate-after-dist-upgrade.26097/ >> >> Migrating from qemu 2.5 with pc-i440fx-2.4 to qemu 2.4.1 don't work. >> qemu-system-x86_64: error while loading state for instance 0x0 of device >> 'fw_cfg' > > While I agree that this is a bug worth fixing, note that in general > migration from new to old versions is _not_ supported. Usually it > works, but not always, and sometimes it's not a bug. > > Machine types are only meant to support migration from old versions to new. > > Paolo >
I sent a patch. Laszlo
