more ipv6 fixes

infrastructure/graduated/qemu/README.md

@@ -0,0 +1,38 @@
+# QEMU
+
+- [QEMU](#qemu)
+  - [QCOW2](#qcow2)
+    - [Restore qcow snapshots](#restore-qcow-snapshots)
+    - [Convert qcow to bootable drive](#convert-qcow-to-bootable-drive)
+    - [Convert bootable drive to qcow](#convert-bootable-drive-to-qcow)
+
+## QCOW2
+
+### Restore qcow snapshots
+
+```bash
+# Create a snapshot
+qemu-img snapshot -c snapshot-name /var/lib/libvirt/images/vm-image.qcow2
+
+# List snapshots for a given image
+qemu-img snapshot -l /var/lib/libvirt/images/vm-image.qcow2
+
+# Restore snapshot
+qemu-img snapshot -a snapshot-name /var/lib/libvirt/images/vm-image.qcow2
+```
+
+### Convert qcow to bootable drive
+
+```bash
+qemu-img convert -f qcow2 -O raw /var/lib/libvirt/images/vm-image.qcow2 /dev/sdb
+```
+
+### Convert bootable drive to qcow
+
+```bash
+qemu-img convert -f raw -O qcow2 /dev/sdd /var/lib/libvirt/images/toshiba.qcow2 conv=noerror -p
+```
+
+If you need to resize a windows partition to non-continuous space simply grow the
+last partition, shrink it to the end of the drive, then grow the windows partition
+with gparted.