[libvirt] libvirt can't get capablities

[Li Zhang]

Hi,

I have suffered several times on both x86 machine and power machine.

When we want to use libvirt to create on VMs, it reports "unknown OS 
type hvm".

We can't get <guest> capabilities.

The log is as the following(log_level=1):

2003-01-02 01:21:39.895+0000: 12214: error : virDomainDefParseXML:8491 : 
unknown OS type hvm
2003-01-02 01:21:39.896+0000: 12214: error : virDomainDefParseXML:8491 : 
unknown OS type hvm
2003-01-02 01:22:00.135+0000: 12207: error : 
qemuCapsComputeCmdFlags:1218 : unsupported configuration: this qemu 
binary requires libvirt to be compiled with yajl
2003-01-02 01:22:13.342+0000: 12207: error : 
qemuCapsComputeCmdFlags:1218 : unsupported configuration: this qemu 
binary requires libvirt to be compiled with yajl
2003-01-02 01:22:13.347+0000: 12204: error : qemuCapsExtractVersion:1576 
: internal error Cannot find suitable emulator for ppc64
2003-01-02 01:22:13.351+0000: 12205: error : qemuCapsExtractVersion:1576 
: internal error Cannot find suitable emulator for ppc64
2003-01-02 01:22:13.355+0000: 12207: error : qemuCapsExtractVersion:1576 
: internal error Cannot find suitable emulator for ppc64
2003-01-02 01:22:13.355+0000: 12208: error : qemuCapsExtractVersion:1576 
: internal error Cannot find suitable emulator for ppc64
2003-01-02 01:22:13.357+0000: 12206: error : qemuCapsExtractVersion:1576 
: internal error Cannot find suitable emulator for ppc64

I search online and find one similar issue from Redhat bugzilla:

https://bugzilla.redhat.com/show_bug.cgi?id=509337

Is there any solution to avoid this problem?

Any idea?

-- 
Best Regards
Li

IBM LTC, China System&Technology Lab, Beijing