Merge pull request #1818 from sriramandev/topic/ssriraman/optimize-vmdk-packing

Optimize vmdk packing by writing zeroes to unused bytes

Author: k8s-ci-robot

images/capi/packer/files/ova/scripts/optimize-disk.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Whiteout root
+count=$(df --sync -kP / | tail -n1  | awk -F ' ' '{print $4}')
+count=$((count - 1))
+dd if=/dev/zero of=/tmp/whitespace bs=1M count=$count || echo "dd exit code $? is suppressed";
+rm /tmp/whitespace
+
+# Whiteout /boot
+count=$(df --sync -kP /boot | tail -n1 | awk -F ' ' '{print $4}')
+count=$((count - 1))
+dd if=/dev/zero of=/boot/whitespace bs=1M count=$count || echo "dd exit code $? is suppressed";
+rm /boot/whitespace

images/capi/packer/ova/packer-node.json

@@ -426,6 +426,14 @@
       "type": "ansible",
       "user": "{{user `ssh_username`}}"
     },
+    {
+      "environment_vars": [
+        "ENABLE_DISK_PACKING={{user `enable_disk_packing`}}"
+      ],
+      "execute_command": "if [[ \"${ENABLE_DISK_PACKING}\" == *\"true\"* ]]; then chmod +x {{ .Path }}; sudo {{ .Path }}; fi",
+      "script": "./packer/files/ova/scripts/optimize-disk.sh",
+      "type": "shell"
+    },
     {
       "arch": "{{user `goss_arch`}}",
       "download_path": "{{user `goss_download_path`}}",
@@ -492,6 +500,7 @@
     "datastore": "",
     "destroy": "false",
     "disk_size": "20480",
+    "enable_disk_packing": "true",
     "existing_ansible_ssh_args": "{{env `ANSIBLE_SSH_ARGS`}}",
     "export_manifest": "none",
     "folder": "",