libvirt users - Apr 2012 - virsh attach-disk with cache=none and io=native for raw devices (online)

Hello, 

I see there is an option with virsh attach-disk to set the cache to
"none" for raw devices, but I can't find how to attach the disk
with io=native (needed for performance reasons).
The goal is to attach a disk online, directly with the proper performance
settings.

I know I can set this in virt-manager, but then I have to restart the VM to
apply the change, so this is an offline operation.
With virsh edit, I guess I also would have to restart the VM...

-- 
Frido Roose
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)

On Thu, Apr 05, 2012 at 11:36:55AM +0200, Frido Roose
wrote:
> Hello, 
> 
> I see there is an option with virsh attach-disk to set the cache to
"none" for raw devices, but I can't find how to attach the disk
with io=native (needed for performance reasons).
> The goal is to attach a disk online, directly with the proper performance
settings.
virsh attach-disk is just a wrapper around the more general
command virsh attach-device.  So if there's stuff you can't
set with attach-disk, you can always pass the complete XML
to attach-device to set everything


Daniel
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