autotest/virt-test — pull request #1678 by chuanchang (2014-05-27 06:18:47+00:00)
Title: Add helper functions for testing virsh blkiotune command

virttest/libvirt_xml/vm_xml.py: parse block I/O elements from XML
virttest/utils_misc.py: get major and minor numbers of the device
virttest/virsh.py: add blkiotune command wrapper

Thanks for your review!