On Fri, Feb 19, 2016 at 11:12:32AM +0000, Andrei Perietanu wrote:
I'm trying to clone a volume in a storage pool and I'm following the steps described here: http://libvirt.org/docs/libvirt-appdev-guide-python/en-US/html/libvirt_application_development_guide_using_python-Storage_Pools-Cloning.html My code looks like: destXML = """ <volume> <name>"""+newDiskName+""".qcow2</name> <target> <path>/jffs2/disk0/"""+poolName+'/'+newDiskName+""".qcow2</path> <format type='qcow2'/> <permissions> <owner>-1</owner> <group>-1</group> <mode>0644</mode> <label>virt_image_t</label> </permissions> </target> </volume>""" srcDisk = tmpPool.storageVolLookupByName(vDisk) newVol = sp.createXMLFrom(destXML,srcDisk, 0) According to the steps described in the link, this should be it; but I can't start any VM that are using this volume. Also comparing the volume XML files for src/dest it looks like the format is not copied over: source: <volume type='file'> <name>k.qcow2</name> <key>/jffs2/disk0/sp/vDisk.qcow2</key> <source> </source> <capacity unit='bytes'>3221225472</capacity> <allocation unit='bytes'>332075008</allocation> <target> <path>/jffs2/disk0/sp/vDisk.qcow2</path> *<format type='qcow2'/>* <permissions> <mode>0644</mode> <owner>0</owner> <group>0</group> </permissions> <timestamps> <atime>1455879195</atime> <mtime>1455879171</mtime> <ctime>1455879171</ctime> </timestamps> </target> dest: <volume type='file'> <name>newDiskName.qcow2</name> <key>/jffs2/disk0/sp/newDiskName.qcow2</key> <source> </source> <capacity unit='bytes'>3221225472</capacity> <allocation unit='bytes'>326868992</allocation> <target> <path>/jffs2/disk0/sp/newDiskName.qcow2</path> *<format type='raw'/>*
So there are two bugs here, probably. Does this go away if you refresh the pool? The other thing is that it doesn't matter what's here, you should explicitly specify the format in the domain XML anyway. Do you do that?
<permissions>
<mode>0644</mode>
<owner>0</owner>
<group>0</group>
</permissions>
<timestamps>
<atime>1455878686</atime>
<mtime>1455878681</mtime>
<ctime>1455878681</ctime>
</timestamps>
</target>
</volume>
I this a bug in libvirt->createXMLFrom ?? Or am I missing something?
Thanks,
Andrei
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