Re: [Qemu-devel] question about feature block_stream and driver_mirror in qemu-xen

[Stefano Stabellini]

On Tue, 20 May 2014, Xiaoding (B) wrote:
> Hi all,
> 
>  
> 
> I tried to test the features about block_stream/drive_mirror in the qemu-xen.
> 
> (Xen version is 4.4.1, qemu version is 1.62)
> 
> And I found the vm crashed after the hmp commands are sent.
> 
>  
> 
> Whether xen has supported the two features in qemu-xen?

They are not currently supported in qemu-xen. However there is work
under way to expose more QEMU block releated features to the user via
libxl:

http://marc.info/?l=xen-devel&m=140016260006608

Something similar could be done for block_stream too.


> 
> My xl configuration file:
> 
> name = "test1"
> 
> memory = 1024
> 
> vcpus = 4
> 
> uuid="c759db4d-c15d-23f4-84ed-5c53d4fd1472"
> 
> on_poweroff = "destroy"
> 
> on_reboot = "restart"
> 
> on_crash = "restart"
> 
> localtime=1
> 
> builder="hvm"
> 
> disk = ["/home/vms/node1/centos64.qcow2, qcow2, xvda, w"]
> 
> vif = [ 'bridge=br0,mac=00:16:3e:09:3a:7d,model=virtio-net' ]
> 
> vnc=1
> 
> vnclisten='0.0.0.0'
> 
>  
> 
>  
> 
>  
> 
> Best regards to you.
> 
> Xiaoding.
> 
>  
> 
> 
>