Figure 2818

Summary of virtual machine details before installation starts

• Create a Virtual Machine

_ a y


1 Click any headline to m aku changes When 1 Ifoe leltimji arc coiiecl. click OK to create lh*> 1 VM

VirluHli/Hli-an Method PwiWrtuahitd

Name oi villus' Machine dpensuse

Initial Memory: 38J MB Maximum Memory 2MB MB Virtual Processors: l

P*j avtrtuallfed Graphics Adapter

t 4 0 GB Hard Disk (Me AfiirAb/*enrtmagcVopensusc/dftifl)

T Parawtuafltted. fcantfomly generated MAC address

Operating System installation

Op crating System: optftSUSE Installation Source; Automated Installation: Additional Arguments:

iftancel ^Qack |

FIGURE 28-19

Operating system installation starting in virtual machine

FIGURE 28-20

Virtual Machine Manager showing dom0 and the new virtual machine

Virtual Machine Manager (Xen on> _ □ X

Eile Edit yiew tielp

yiew! All virtual machines C |

id käme v status cf3u usage

Memory usage

In nomanvo \ Punning 3 ?? 4HPW

617 oö mr fa 3

11 openvuse & i Running 0.02 % _I

1 384 00 MB & %


□ Mew g Details ft^gpen 1

When the new processors with hardware support for virtualization appeared, this situation changed. Now Xen can run either in paravirtualized mode or, with the right hardware, in hardware-assisted (sometimes called, "fully virtualized") mode. Note that this is absolutely impossible unless you have the right hardware (check /proc/cpuinfo, as noted). In some cases, you may need to also enable virtualization capabilities in the machine BIOS.

Most versions of Windows and older non-Xen-aware versions of Linux can run in hardware-assisted mode under Xen, and virt-manager makes it as easy to do this as to run paravirtualized systems (see Figure 28-21).

In practice, the overhead resulting from running under Xen is higher in the case of hardware-assisted virtualization than for paravirtualization, but setting up and running the virtual machine is done in the same way.

Was this article helpful?

0 0

Post a comment