The qemu system comes with powerful tools, such as qemu-img and qemu-nbd which are used here to build up kvm images.
Pass in the mnt dict returned from nbd_mount to unmount and disconnect the image from nbd. If all of the partitions are unmounted return an empty dict, otherwise return a dict containing the still mounted partitions
CLI Example:
salt '*' qemu_nbd.clear '{/mnt/foo: /dev/nbd0p1}'
Activate nbd for an image file.
CLI Example:
salt '*' qemu_nbd.connect /tmp/image.raw
Mount the named image via qemu-nbd and return the mounted roots
CLI Example:
salt '*' qemu_nbd.init /srv/image.qcow2
Pass in the nbd connection device location, mount all partitions and return a dict of mount points
CLI Example:
salt '*' qemu_nbd.mount /dev/nbd0