Longhorn supports iSCSI target frontend mode. You can connect to it
through any iSCSI client, including open-iscsi, and virtual machine
hypervisor like KVM, as long as it’s in the same network as the Longhorn system.
The Longhorn CSI driver doesn’t support iSCSI mode.
To start a volume with the iSCSI target frontend mode, select iSCSI as the frontend when creating the volume.
After the volume has been attached, you will see something like the following in the endpoint field: