Hello, Sorry, I figured out the error. Instead of none I need to send the xml file for the same. But still I am unable to understand the relevance of the error reported in the present context. <div class="gmail_quote"> On 16 May 2011 18:29, Abhishek Gupta <<a href="mailto:w2lame@gmail.com">w2lame@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> Hi, I am using libvirt and virsh for my application. I am trying to manage snapshots for my infrastructure. All virsh commands are working fine like snapshot-create, delete, list, revert, current. But when I try to do the same using libvirt, I get out of memory error. Here are the commands that i execute on my host in a python shell... import libvirt conn = libvirt.open("qemu:///system") dom = conn.lookupByName("vmtest") snap = dom.snapshotCreateXML(None,0); The error is as follows libvir: Remote error : out of memory Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.6/dist-packages/libvirt.py", line 669, in snapshotCreateXML if ret is None:raise libvirtError('virDomainSnapshotCreateXML() failed', dom=self) libvirt.libvirtError: out of memory _______________________________________________ libvirt-users mailing list <a href="mailto:libvirt-users@redhat.com">libvirt-users@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/libvirt-users" target="_blank">https://www.redhat.com/mailman/listinfo/libvirt-users</a> </blockquote></div>