What's the diffrence between snapshot-create and snapshot-create-as in virsh kvm?

Question

On my virtualization system there are some VMs. One of them was aimed for testing some services on it. So in this case I need to have the first state of that VM.

I searched for a solution found the snapshot as a good approach for it. Then searched further and found out that virsh can do it form by snapshot-create. But besides that, there is another command, snapshot-create-as. I read both of them, and both of them act the same.

Now my question is, what is the difference between snapshot-create and snapshot-create-as?

Please describe in detail!!

Answer 1

# virsh help snapshot-create-as
Create a snapshot (disk and RAM) from arguments

vs.

# virsh help snapshot-create
Create a snapshot (disk and RAM) from XML

Apparently one can create an xml file using snapshot-create-as, then use that with snapshot-create.