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Add snapshot management support

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This commit is contained in:
Martin Wimpress 2020-03-20 18:17:53 +00:00
parent fb627583b9
commit a79e16e1b7
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GPG key ID: 61DF940515E06DA3
2 changed files with 98 additions and 23 deletions
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109
quickemu
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@ -9,25 +9,67 @@ function disk_delete() {
fi
}
function vm_restore() {
if [ -f "${disk_img_snapshot}" ]; then
mv "${disk_img_snapshot}" "${disk_img}"
function snapshot_apply() {
local snapshot_tag="${1}"
if [ -z "${snapshot_tag}" ]; then
echo "ERROR! No snapshot tag provided."
exit
fi
if [ -e "${disk_img}" ]; then
${QEMU_IMG} snapshot -q -a "${snapshot_tag}" "${disk_img}"
if [ $? -eq 0 ]; then
echo "SUCCESS! Applied snapshot ${snapshot_tag} to ${disk_img}"
else
echo "ERROR! Failed to apply snapshot ${snapshot_id} to ${disk_img}"
fi
else
echo "NOTE! ${disk_img} not found. Doing nothing."
fi
echo "SUCCESS! Restored ${disk_img_snapshot}"
exit 0
}
function vm_snapshot() {
if [ -f "${disk_img_snapshot}" ]; then
mv "${disk_img_snapshot}" "${disk_img_snapshot}.old"
function snapshot_create() {
local snapshot_tag="${1}"
if [ -z "${snapshot_tag}" ]; then
echo "ERROR! No snapshot tag provided."
exit
fi
qemu-img create -b "${disk_img}" -f qcow2 "${disk_img_snapshot}" -q
if [ $? -eq 0 ]; then
echo "SUCCESS! Created ${disk_img_snapshot}"
if [ -e "${disk_img}" ]; then
${QEMU_IMG} snapshot -q -c "${snapshot_tag}" "${disk_img}"
if [ $? -eq 0 ]; then
echo "SUCCESS! Created snapshot ${snapshot_tag} of ${disk_img}"
else
echo "ERROR! Failed to create snapshot ${snapshot_tag} of ${disk_img}"
fi
else
echo "ERROR! Failed to create ${disk_img_snapshot}"
echo "NOTE! ${disk_img} not found. Doing nothing."
fi
}
function snapshot_delete() {
local snapshot_tag="${1}"
if [ -z "${snapshot_tag}" ]; then
echo "ERROR! No snapshot tag provided."
exit
fi
if [ -e "${disk_img}" ]; then
${QEMU_IMG} snapshot -q -d "${snapshot_tag}" "${disk_img}"
if [ $? -eq 0 ]; then
echo "SUCCESS! Deleted snapshot ${snapshot_tag} of ${disk_img}"
else
echo "ERROR! Failed to delete snapshot ${snapshot_tag} of ${disk_img}"
fi
else
echo "NOTE! ${disk_img} not found. Doing nothing."
fi
}
function snapshot_info() {
if [ -e "${disk_img}" ]; then
${QEMU_IMG} info "${disk_img}"
fi
exit 0
}
function get_port() {
@ -207,7 +249,8 @@ ENABLE_EFI=0
readonly QEMU="/snap/bin/qemu-virgil"
readonly QEMU_IMG="/snap/bin/qemu-virgil.qemu-img"
readonly LAUNCHER=$(basename $0)
SNAPSHOT=0
SNAPSHOT_ACTION=""
SNAPSHOT_TAG=""
VM=""
while [ $# -gt 0 ]; do
@ -219,7 +262,18 @@ while [ $# -gt 0 ]; do
DELETE=1
shift;;
-snapshot|--snapshot)
SNAPSHOT=1
SNAPSHOT_ACTION="${2}"
if [ -z "${SNAPSHOT_ACTION}" ]; then
echo "ERROR! No snapshot action provided."
exit 1
fi
shift
SNAPSHOT_TAG="${2}"
if [ -z "${SNAPSHOT_TAG}" ] && [ "${SNAPSHOT_ACTION}" != "info" ]; then
echo "ERROR! No snapshot tag provided."
exit 1
fi
shift
shift;;
-vm|--vm)
VM="$2"
@ -253,11 +307,30 @@ fi
if [ ${DELETE} -eq 1 ]; then
disk_delete
exit 0
exit
fi
if [ ${SNAPSHOT} -eq 1 ]; then
vm_snapshot
if [ -n "${SNAPSHOT_ACTION}" ]; then
case ${SNAPSHOT_ACTION} in
apply)
snapshot_apply "${SNAPSHOT_TAG}"
snapshot_info
exit;;
create)
snapshot_create "${SNAPSHOT_TAG}"
snapshot_info
exit;;
delete)
snapshot_delete "${SNAPSHOT_TAG}"
snapshot_info
exit;;
info)
snapshot_info
exit;;
*)
echo "ERROR! \"${SNAPSHOT_ACTION}\" is not a supported snapshot action."
usage;;
esac
fi
vm_boot