diff options
Diffstat (limited to 'scripts/qcow2_handling')
| -rw-r--r-- | scripts/qcow2_handling | 60 |
1 files changed, 56 insertions, 4 deletions
diff --git a/scripts/qcow2_handling b/scripts/qcow2_handling index 4252a16..d210c3b 100644 --- a/scripts/qcow2_handling +++ b/scripts/qcow2_handling @@ -39,6 +39,10 @@ export -f init_nbd # connect image with known format to block device connect_blkdev() { init_nbd + if [ -z "$NBD_DEV" ] ; then + echo "connect_blkdev: NBD_DEV not determined. Exit." + exit 1; + fi qemu-nbd --discard=unmap -c $NBD_DEV "$1" sync kpartx -a $NBD_DEV @@ -50,6 +54,10 @@ export -f connect_blkdev # connect raw image to block device connect_raw_blkdev() { init_nbd + if [ -z "$NBD_DEV" ] ; then + echo "connect_raw_blkdev: NBD_DEV not determined. Exit." + exit 1; + fi qemu-nbd --discard=unmap -f raw -c $NBD_DEV "$1" sync kpartx -a $NBD_DEV @@ -60,6 +68,10 @@ export -f connect_raw_blkdev # disconnect image from block device disconnect_blkdev() { + if [ -z "$NBD_DEV" ] ; then + echo "disconnect_blkdev: NBD_DEV not set. Exit." + exit 1; + fi kpartx -d $NBD_DEV qemu-nbd -d $NBD_DEV NBD_DEV= @@ -73,11 +85,29 @@ export -f disconnect_blkdev # mount qcow2 image: mount_image <image file> <mountpoint> mount_qimage() { + if [ -z "$1" ] ; then + echo "mount_qimage: image-file not given. Exit." + exit 1; + fi + if [ -z "$2" ] ; then + echo "mount_qimage: mountpoint not given. Exit." + exit 1; + fi + connect_blkdev "$1" + + if [ -z "$NBD_DEV" ] ; then + echo "mount_qimage: NBD_DEV not determined. Exit." + exit 1; + fi + if [ -z "$MAP_ROOT_DEV" -o -z "$MAP_BOOT_DEV" -o -z "$MAP_DATA_DEV" ] ; then + echo "mount_qimage: map devices not determined. Exit." + exit 1; + fi mount -v -t ext4 $MAP_ROOT_DEV "$2" - mkdir -p "${ROOTFS_DIR}/boot" + mkdir -p "$2/boot" mount -v -t vfat $MAP_BOOT_DEV "$2/boot" - mkdir -p "${ROOTFS_DIR}/data" + mkdir -p "$2/data" mount -v -t ext4 $MAP_DATA_DEV "$2/data" CURRENT_MOUNTPOINT="$2" } @@ -85,11 +115,29 @@ export -f mount_qimage # mount raw image: mount_image <image file> <mountpoint> mount_rawimage() { + if [ -z "$1" ] ; then + echo "mount_rawimage: image-file not given. Exit." + exit 1; + fi + if [ -z "$2" ] ; then + echo "mount_rawimage: mountpoint not given. Exit." + exit 1; + fi + connect_raw_blkdev "$1" + + if [ -z "$NBD_DEV" ] ; then + echo "mount_rawimage: NBD_DEV not determined. Exit." + exit 1; + fi + if [ -z "$MAP_ROOT_DEV" -o -z "$MAP_BOOT_DEV" -o -z "$MAP_DATA_DEV" ] ; then + echo "mount_rawimage: map devices not determined. Exit." + exit 1; + fi mount -v -t ext4 $MAP_ROOT_DEV "$2" - mkdir -p "${ROOTFS_DIR}/boot" + mkdir -p "$2/boot" mount -v -t vfat $MAP_BOOT_DEV "$2/boot" - mkdir -p "${ROOTFS_DIR}/data" + mkdir -p "$2/data" mount -v -t ext4 $MAP_DATA_DEV "$2/data" CURRENT_MOUNTPOINT="$2" } @@ -98,6 +146,10 @@ export -f mount_rawimage # umount qcow2 or raw image: umount_image <current mountpoint> umount_image() { sync + if [ -z "$1" ] ; then + echo "umount_image: mountpoint not given. Exit." + exit 1; + fi #umount "$1/boot" #umount "$1/data" while mount | grep -q "$1"; do |