On Tue, Mar 26, 2013 at 12:46:52 +0000, Yuan, Ye A wrote: > Hi all, > I'm a graduate student in Shanghai, and will do experiment about live migration using KVM as hypervisor. > Due to my demand, I want to get each iteration time and downtime in migration. > I found there is no API to implement it, and how can I obtain data I want? Libvirt provides virDomainGetJobStats API which gives you all migration statistics data provided by QEMU (via query-migrate QMP command). If you need something more, you would need to add reporting of the required additional statistics to QEMU first. Jirka -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list