Unable to create snapshot of a raw disk while using RHEL KVM - Red Hat Customer Portal

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Issue

Unable to create snapshot of a raw disk while using with RHEL kvm+libvirt.
Getting one of the following errors when creating the snapshot

error: unsupported configuration: internal snapshot for disk vda unsupported for storage type raw

error: Requested operation is not valid: Disk <disk_name> does not support snapshotting

Using 'virsh snapshot-create c' command to create snapshot.

Environment

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
KVM

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