Re: [Qemu-devel] Live Migration with different block devices

[Paolo Bonzini]

Il 24/06/2014 21:18, Xiongzi Ge ha scritto:
> When I do live migration, in the source and destination host, there are
> different block devices, but qemu can not detect this. I used virtio as
> the driver in kvm and in the vdi device in the guest is /dev/vda.  So,
> the vm guest can read different data from the same /dev/vda device.

It's probably the guest kernel (not QEMU) that is caching data from the 
source's /dev/vda.  What you are doing is not a valid usage of 
migration.  What are you trying to do?

Paolo