[libvirt-users] caps->nguests == 0?

[Alex Jia]

On 06/19/2012 02:56 PM, Zhihua Che wrote:
> hi,
>
>     I compiled the libvirt-0.9.10 and started the libvirtd with sudo.
> Unfortunately, I got an Error, saying 'virDomainDefParseXML unknown OS
> type hvm'. I debugged it and found in function
> virCapabilitiesSupportsGuestOSType, the parameter caps->nguests is 0.
>     On the other hand, I tried start the libvirtd with common user, and
> creating domain with virsh, i found the caps->ngusts is 2 and had one
> value 'hvm', so it didn't complain the error above, instead, it
> complained could not load PC BIOS bios.bin.
>
> I'd say I searched a lot and people say it's caused by without loading
> kvm and kvm-intel module. So, I checked and it is loaded. Any tips
> here?
Please check libvirtd.log further, if you saw the following similar error:

xxxx : xxxx : error : qemuCapsComputeCmdFlags:1209 : unsupported 
configuration: this qemu binary requires libvirt to be compiled with yajl
xxxx : xxxx : error : virDomainDefParseXML:8312 : internal error No 
guest options available for arch 'x86_64'

It means you need to install yajl-devel rpm package, for more, you may 
run './configure -h':

# ./configure -h | grep yajl
   --with-yajl             use YAJL for JSON parsing/formatting 
[default=check]

BTW, If you're compiling a current libvirt upstream, you will get a 
friendly  reminder, so suggest to try latest libvirt upstream.
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