2014-05-28 12:33:56,782 DEBUG [kvm.storage.KVMStorageProcessor] (agentRequest-Handler-1:null) Copying template to primary storage, template format is qcow2
2014-05-28 12:33:56,798 DEBUG [kvm.storage.LibvirtStorageAdaptor] (agentRequest-Handler-1:null) copyPhysicalDisk: disk size:305463296, virtualsize:305459200 format:qcow2
2014-05-28 12:33:56,798 DEBUG [kvm.storage.LibvirtStorageAdaptor] (agentRequest-Handler-1:null) <volume>
<name>87d6232c-e681-11e3-b200-000c294946bd</name>
<capacity>305459200</capacity>
<target>
<format type='qcow2'/>
<permissions><mode>0744</mode></permissions></target>
</volume>

2014-05-28 12:33:56,848 DEBUG [utils.script.Script] (agentRequest-Handler-1:null) Executing: qemu-img info /mnt/7bd7a6e6-33b1-3314-a8e2-67d6de51e7a7/427295ce-95c1-4360-9c1d-c2de11a6cdca.qcow2
2014-05-28 12:33:56,859 DEBUG [utils.script.Script] (agentRequest-Handler-1:null) Exit value is 1
2014-05-28 12:33:56,860 DEBUG [utils.script.Script] (agentRequest-Handler-1:null) 'image' uses a qcow2 feature which is not supported by this qemu version: QCOW version 3Could not open '/mnt/7bd7a6e6-33b1-3314-a8e2-67d6de51e7a7/427295ce-95c1-4360-9c1d-c2de11a6cdca.qcow2': Operation not supported

ビルドした環境のqemu-imgのバージョンと、systemvmが稼動するKVM hostのqemuのバージョンがずれていると、qcow2イメージが読めずに起動しない場合があります。