feat: download disk from multiple volumes

Download disk image from VM that has
multiple volumes.

Signed-off-by: Ben Oukhanov <[email protected]>

Author: codingben

README.md

@@ -15,7 +15,7 @@ KubeVirt Disk Uploader -> Download VM Disk -> Build New Container Disk -> Push T
 **Prerequisites**
 
 1. Ensure Virtual Machine (VM) is powered off. Data from VM can be exported only when it is not used.
-2. Modify [kubevirt-disk-uploader](https://github.com/codingben/kubevirt-disk-uploader/blob/main/kubevirt-disk-uploader.yaml#L58) arguments (VM Name, New Container Disk Name, Disk File, and Enable or Disable System Preparation).
+2. Modify [kubevirt-disk-uploader](https://github.com/codingben/kubevirt-disk-uploader/blob/main/kubevirt-disk-uploader.yaml#L58) arguments (VM Name, Volume Name, New Container Disk Name, Disk File, and Enable or Disable System Preparation).
 3. Modify [kubevirt-disk-uploader-credentials](https://github.com/codingben/kubevirt-disk-uploader/blob/main/kubevirt-disk-uploader.yaml#L65-L74) of the external container registry (Username, Password and Hostname).
 
 Deploy `kubevirt-disk-uploader` within the same namespace as the Virtual Machine (VM):

examples/kubevirt-disk-uploader-tekton.yaml

@@ -157,6 +157,9 @@ spec:
   - name: VM_NAME
     description: The name of the virtual machine
     type: string
+  - name: VOLUME_NAME
+    description: The volume name of the virtual machine
+    type: string
   - name: EXPORTED_IMAGE
     description: The name of the exported image
     type: string
@@ -188,6 +191,7 @@ spec:
     command: ["/usr/local/bin/run-uploader.sh"]
     args:
     - $(params.VM_NAME)
+    - $(params.VOLUME_NAME)
     - $(params.EXPORTED_IMAGE)
     - $(params.DISK_IMAGE)
     - $(params.ENABLE_VIRT_SYSPREP)
@@ -206,6 +210,9 @@ spec:
   - name: VM_NAME
     description: "Name of the virtual machine"
     type: string
+  - name: VOLUME_NAME
+    description: "Volume name of the virtual machine"
+    type: string
   - name: EXPORTED_IMAGE
     description: "Name of the exported image"
     type: string
@@ -227,6 +234,8 @@ spec:
     params:
     - name: VM_NAME
       value: "$(params.VM_NAME)"
+    - name: VOLUME_NAME
+      value: "$(params.VOLUME_NAME)"
     - name: EXPORTED_IMAGE
       value: "$(params.EXPORTED_IMAGE)"
     - name: DISK_IMAGE
@@ -249,6 +258,8 @@ spec:
   params:
   - name: VM_NAME
     value: example-vm-tekton
+  - name: VOLUME_NAME
+    value: datavolumedisk
   - name: EXPORTED_IMAGE
     value: example-vm-tekton-exported:latest
   - name: DISK_IMAGE

kubevirt-disk-uploader.yaml

@@ -55,7 +55,7 @@ spec:
               name: kubevirt-disk-uploader-credentials
               key: registryHostname
       command: ["/usr/local/bin/run-uploader.sh"]
-      # args: ["<VM_NAME>", "<CONTAINER_DISK_NAME>", "<DISK_FILE>", "<ENABLE_VIRT_SYSPREP>"]
+      # args: ["<VM_NAME>", "<VOLUME_NAME>", "<CONTAINER_DISK_NAME>", "<DISK_FILE>", "<ENABLE_VIRT_SYSPREP>"]
       resources:
         requests:
           memory: 3Gi

run-uploader.sh

@@ -2,9 +2,10 @@
 
 # Arguments
 VM_NAME=$1
-CONTAINER_DISK_NAME=$2
-DISK_FILE=$3
-ENABLE_VIRT_SYSPREP=$4
+VOLUME_NAME=$2
+CONTAINER_DISK_NAME=$3
+DISK_FILE=$4
+ENABLE_VIRT_SYSPREP=$5
 
 # Variables
 OUTPUT_PATH=./tmp
@@ -16,6 +17,11 @@ validate_arguments() {
     exit 1
   fi
 
+  if [ -z "$VOLUME_NAME" ]; then
+    echo "Volume name is missing. Please provide a valid Volume name."
+    exit 1
+  fi
+
   if [ -z "$CONTAINER_DISK_NAME" ]; then
     echo "Container Disk name is missing. Please provide a valid disk name."
     exit 1
@@ -51,7 +57,7 @@ END
 download_disk_img() {
   echo "Downloading disk image $DISK_FILE from $VM_NAME Virutal Machine..."
 
-  usr/bin/virtctl vmexport download "$VM_NAME" --vm="$VM_NAME" --output="$TEMP_DISK_PATH"
+  usr/bin/virtctl vmexport download "$VM_NAME" --vm="$VM_NAME" --volume "$VOLUME_NAME" --output="$TEMP_DISK_PATH"
 
   if [ -e "$TEMP_DISK_PATH" ] && [ -s "$TEMP_DISK_PATH" ]; then
     echo "Donwload completed successfully."