Snapshots can be made of any attached or detached volumes
Snapshots are static backups of a volume
To snapshot a volume, go to Project > Compute > Volumes and choose Create Snapshot from the Volume Menu
Label your snapshots intuitively
(*) Bug in Horizon: Horizon fails to update the quota for volume snapshots. This will be fixed in the near future.
If your snapshot exceeds the quota, you will not be able to save it
You can also snapshot running VMs to lock your software stack
Simply create a snapshot of the root volume
Remember to label and describe the snapshot clearly
If the volume is attached and in-use, you can force the snapshot without detaching the volume
The snapshot might take a while to create
Viola! The snapshot is ready for use