Mapping physical storage to domU disk

Protocol
Description
Example
phy:
Block devices, such as a physical disk, in domain 0
phy:/dev/sdc
file:
Raw disk images accessed by using loopback
file:/path/file
nbd:
Raw disk images accessed by using NBD
ndb: ip_port
tap:aio:
Raw disk images accessed by using blktap. Similar to loopback but without using loop devices.
tap:aio:/path/file
tap:cdrom
CD reader block devices
tap:cdrom:/dev/sr0
tap:vmdk:
VMware disk images accessed by using blktap
tap:vmdk:/path/file
tap:qcow:
QEMU disk images accessed by using blktap
tap:qcow:/path/file
iscsi:
iSCSI targets using connections initiated from domain 0
iscsi:IQN,LUN
npiv:
Fibre Channel connections initiated from domain 0
npiv:NPIV,LUN

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