113 lines
2.3 KiB
Bash
113 lines
2.3 KiB
Bash
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#!/bin/bash
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if [ "$(id -u)" != "0" ]; then
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echo "Please run as root" 1>&2
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exit 1
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fi
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progname=$(basename $0)
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function usage()
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{
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cat << HEREDOC
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Usage:
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Mount Image : $progname [--mount] [--image-name <path to qcow2 image>] [--mount-point <mount point>]
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Umount Image: $progname [--umount] [--mount-point <mount point>]
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Cleanup NBD : $progname [--cleanup]
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arguments:
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-h, --help show this help message and exit
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-c, --cleanup cleanup orphaned device mappings
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-m, --mount mount image
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-u, --umount umount image
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-i, --image-name path to qcow2 image
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-p, --mount-point mount point for image
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This tool will use /dev/nbd1 as default for mounting an image. If you want to use another device, execute like this:
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NBD_DEV=/dev/nbd2 ./$progname --mount --image <your image> --mount-point <your path>
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HEREDOC
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}
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MOUNT=0
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UMOUNT=0
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IMAGE=""
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MOUNTPOINT=""
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nbd_cleanup() {
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DEVS="$(lsblk | grep nbd | grep disk | cut -d" " -f1)"
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if [ ! -z "${DEVS}" ]; then
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for d in $DEVS; do
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if [ ! -z "${d}" ]; then
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QDEV="$(ps xa | grep $d | grep -v grep)"
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if [ -z "${QDEV}" ]; then
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kpartx -d /dev/$d && echo "Unconnected device map removed: /dev/$d"
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fi
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fi
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done
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fi
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}
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# As long as there is at least one more argument, keep looping
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while [[ $# -gt 0 ]]; do
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key="$1"
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case "$key" in
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-h|--help)
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usage
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exit
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;;
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-c|--cleanup)
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nbd_cleanup
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;;
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-m|--mount)
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MOUNT=1
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;;
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-u|--umount)
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UMOUNT=1
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;;
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-i|--image-name)
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shift
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IMAGE="$1"
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;;
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-p|--mount-point)
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shift
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MOUNTPOINT="$1"
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;;
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*)
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echo "Unknown option '$key'"
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usage
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exit
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;;
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esac
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# Shift after checking all the cases to get the next option
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shift
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done
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if [ "${MOUNT}" = "1" ] && [ "${UMOUNT}" = "1" ]; then
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usage
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echo "Concurrent mount options not possible."
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exit
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fi
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if [ "${MOUNT}" = "1" ] && ([ -z "${IMAGE}" ] || [ -z "${MOUNTPOINT}" ]); then
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usage
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echo "Can not mount image. Image path and/or mount point missing."
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exit
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fi
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if [ "${UMOUNT}" = "1" ] && [ -z "${MOUNTPOINT}" ]; then
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usage
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echo "Can not umount. Mount point parameter missing."
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exit
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fi
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export NBD_DEV="${NBD_DEV:-/dev/nbd1}"
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source scripts/qcow2_handling
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if [ "${MOUNT}" = "1" ]; then
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mount_qimage "${MOUNTPOINT}" "${IMAGE}"
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elif [ "${UMOUNT}" = "1" ]; then
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umount_qimage "${MOUNTPOINT}"
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fi
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