libvirt searches at startup for one of the kvm-img and qemu-img commands. If the kvm-img command goes away while libvirt is running, then it continues to try to use kvm-img, and this error occurs. Restarting libvirt is therefore a workaround.
The kvm-img command has not existed since early in the trusty cycle. On a precise-to-trusty upgrade, libvirt will be restarted (preventing this error from being seen). The reason you saw it was that yo uupgraded from the saucy version, which is no longer spuported. I'll therefore mark this bug invalid. We could otherwise handle it by having qemu updates always cause a libvirt restart, but i don't believe that's warranted. ** Changed in: libvirt (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1358405 Title: cannot execute binary /usr/bin/kvm-img: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1358405/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs