dprince/kytoon — pull request #13 by sthaha (2013-05-21 12:52:44+00:00)
Title: Fixes broken creation of cow images based on other qcow image

[base]<-[overlay-1]<--[kytoon-created-image] fails

Not providing backing_fmt to the qemu-create when creating qcow
images results in failure. Fixed by finding the file format and
adding the backing_fmt argument.