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List:       qemu-devel
Subject:    Re: [Qemu-devel] Live Migration with different block devices
From:       Brian Jackson <iggy () theiggy ! com>
Date:       2014-06-24 21:29:16
Message-ID: 53A9EDAC.6040808 () theiggy ! com
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On 6/24/2014 2:22 PM, Xiongzi Ge wrote:
> Hi,
>
>
> 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.  I am studying
> this code to let qemu understand that, this is a new device.
>
> Does qemu recognize different block devices after live migration?

You aren't supposed to have different command line options when live 
migrating (with the exception of -incoming if you migrate that way). So 
whatever you are trying to do is unsupported.

> Where is
> the interface to modify this? Thanks
>
>
> Gary
>

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