97 lines
2.7 KiB
Bash
97 lines
2.7 KiB
Bash
#!/bin/bash
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# Copyright (c) 2017 StackHPC Ltd.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Ensure that a libvirt volume exists, optionally uploading an image.
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# On success, output a JSON object with a 'changed' item.
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if [[ $# -ne 4 ]] && [[ $# -ne 5 ]]; then
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echo "Usage: $0 <name> <pool> <capacity> <format> [<image>]"
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exit 1
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fi
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NAME=$1
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POOL=$2
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CAPACITY=$3
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FORMAT=$4
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IMAGE=$5
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# Check whether a volume with this name exists.
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output=$(virsh vol-info --pool $POOL --vol $NAME 2>&1)
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result=$?
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if [[ $result -eq 0 ]]; then
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echo '{"changed": false}'
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exit 0
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elif ! echo "$output" | grep 'Storage volume not found' >/dev/null 2>&1; then
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echo "Unexpected error while getting volume info"
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echo "$output"
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exit $result
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fi
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# Create the volume.
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output=$(virsh vol-create-as --pool $POOL --name $NAME --capacity $CAPACITY --format $FORMAT 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to create volume"
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echo "$output"
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exit $result
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fi
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# Determine the path to the volume file.
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output=$(virsh vol-key --pool $POOL --vol $NAME 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to get volume file path"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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# Change the ownership of the volume to qemu. Without doing this libvirt cannot
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# access the volume.
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output=$(chown qemu:qemu $output 2>1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to change ownership of the volume to qemu"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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if [[ -n $IMAGE ]]; then
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# Upload an image to the volume.
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output=$(virsh vol-upload --pool $POOL --vol $NAME --file $IMAGE 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to upload image $IMAGE to volume $NAME"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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# Resize the volume to the requested capacity.
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output=$(virsh vol-resize --pool $POOL --vol $NAME --capacity $CAPACITY 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to resize volume $VOLUME to $CAPACITY"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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fi
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echo '{"changed": true}'
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exit 0
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