An error message may show that snapshots are unsupported when a snapshot operation for a KVM virtual L-Server fails.
Example
FJSVrcx:ERROR:67397:failed to create image. detail=(libvir: QEMU Driver error : unsupported configuration: internal snapshot for disk fda unsupported for storage type raw,vmerrno=400,ip=192.168.3.63,host=192.168.3.63)
A snapshot operation fails because a virtual floppy disk is attached.
Detaching the virtual floppy disk on the KVM host, and then perform the snapshot operation again.