Belkin XM Commander Bedienungsanleitung PDF herunterladen (Seite 58)

5.10 Mapping Physical Storage to

Virtual Disks

To specify a mapping between physical storage and the virtual disk, you might need to

edit the virtual machine’s disk information. Follow the instructions in Section 4.3,

“Conguring a Virtual Machine by Modifying its xend Settings” (page 30), to change

the respective device entry to the desired setting.

Example 5.3

Example: Virtual Machine Output from Xend

(vbd

(dev xvda:disk)

(uname file:/var/lib/xen/images/oes2l/disk0)

(mode w)

(type disk)

(backend 0)

)

Table 5.3

uname Settings

ExampleDescriptionProtocol

phy:/dev/xvda

Block devices, such as a physical disk,

in domain 0

phy:

file:/path/file

Raw disk images accessed by using

loopback

le:

tap:aio:/path/file

Raw disk images accessed by using

blktap. Similar to loopback but with

better performance

tap:aio:

tap:vmdk:/path/file

VMware disk images accessed by using

blktap

tap:vmdk:

ndb: ip_portRaw disk images accessed by using NBDnbd:

tap:qcow/path/file

QEMU disk images accessed by using

blktap

tap:qcow:

52 Virtualization with Xen

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Belkin XM Commander Bedienungsanleitung Seite 58