[Libvir] Question about specifications of virsh start
Richard W.M. Jones
rjones at redhat.com
Wed Nov 7 13:32:56 UTC 2007
Masayuki Sunou wrote:
> Hi
>
> I have a question about specifications of virsh start.
>
> It is necessary to remove "type=ioemu" from the configuration file of Xen,
> when HVM domain installed Para Virtualized Driver use unmodified driver
> on Xen 3.0.3.
>
> But,libvirt always adds "type=ioemu" to vif of HVM domain in xm_internal.c.
> Therefore virsh start cannot start correctly HVM domain installed
> Para Virtualized Driver.
>
> Could you teach why does libvirt disregard setting of configuration
> file and set type=ioemu ?
This is surely a bug in libvirt, src/xm_internal.c, xenXMParseXMLVif:
if (hvm) {
strcat(buf, ",type=ioemu");
}
Do you know what we can use to determine if the PV drivers are installed
in a domain? I don't think there is anything extrinsic, so perhaps we
need to add something to the XML domain description.
Rich.
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