[Qemu-devel] broken cross-version migration from 2.2 to 2.1

[Igor Mammedov]

CCing to migration maintainers a couple migration regressions in 2.2:

1st error:

source: 
 qemu-system-x86_64-2.2 -enable-kvm -m 512  -monitor stdio -M pc-i440fx-2.1
 (qemu) stop
 (qemu) migrate "exec:gzip -c > STATEFILE.gz"

target:
 qemu-system-x86_64-2.1 -enable-kvm -m 512  -monitor stdio  -incoming "exec: 
gzip -c -d STATEFILE.gz" -M pc-i440fx-2.1
 qemu: warning: error while loading state for instance 0x0 of device 'serial'
 qemu-system-x86_64-2.1: load of migration failed: No such file or directory

2nd error:

source:
 qemu-system-x86_64-2.2 -enable-kvm -smp 2 -m 512  -monitor stdio   -M 
pc-i440fx-2.1
 (qemu) stop
 (qemu) migrate "exec:gzip -c > STATEFILE.gz"

target:
 qemu-system-x86_64-2.1 -enable-kvm -smp 2 -m 512 -monitor stdio -M 
pc-i440fx-2.1 -incoming "exec: gzip -c -d STATEFILE.gz"
 qemu: warning: error while loading state for instance 0x1 of device 'apic'
 qemu-system-x86_64-2.1: load of migration failed: No such file or directory