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Block Devices in Xen
7.1 Mapping Physical Storage to
Virtual Disks
Virtual disks can be based on the following types of physical devices and files. Each
type includes an example statement.
• A physical disk device, such as a DVD, that is accessible as a device to the host.
phy:/dev/cdrom
• A file that contains a disk image accessible from the file system of the host. Disk
images can be encoded as raw, QEMU, or VMware.
file:/mnt/disks/sles10sp1.iso
tap:aio:/mnt/disks/sles10sp1.iso specifies a raw disk that might be
taken from a different virtualization platform.
tap:qcow:/mnt/disks/sles10sp1.iso.qcow
tap:vmdk:/mnt/disks/sles10sp1.iso.vmdk
• A remote storage device specified using the Internet SCSI (iSCSI) protocol.
iscsi:iqn.2001-04.com.acme@0ac47ee2-216e-452a-a341-a12624cd0225
Block Devices in Xen
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