I used the command ‘virsh shutdown vm1’ to shut down a guest named vm1 using the virsh command. However, it is still running, and my vm1 is not responding to an ssh session. Is there is a way to forcefully stop or kill a guest VM using the virsh command from host server?

You can alway force a guest domain/VM to stop with the virsh command. This command does an immediate ungraceful shutdown of VM. Let us see how to force a guest to stop and risk associated with it on Linux KVM.

How to shut down a guest vm gracefully

The syntax is:
# virsh shutdown domain
# virsh shutdown vm
# virsh shutdown freebsd
# virsh shutdown ubuntu1

How to shut down a guest vm immediately (forceful shutdown)

The syntax is:
# virsh destroy domain
# virsh destroy vm
# virsh destroy freebsd
# virsh destroy ubuntu1
Sample sessin:

The above command works but it can also corrupt guest file system but leave its resources intact. Hence I recommend to backup your VM everyday or at least backup important files including database.