Belkin XM Commander Manual de usuario descargar pdf (Pagina 52)

Enter sax2 to run the SaX2 graphical conguration module.

Congure the GUI as desired.

Enter telinit 5 to switch to GUI mode.

5.6 Paravirtual Mode and Journaling

File Systems

It is recommended that operating systems running in paravirtual mode set up their kernel

on a separate partition that uses a non-journaling le system, such as ext2.

Before a paravirtualized operating system can boot, the management domain must

construct a virtual machine and place the paravirtualized kernel in it. Then, the paravir-

tualized operating system boots. To retrieve the kernel during the bootstrapping process,

the virtual machine’s boot disk is mounted in read-only mode, the kernel is copied to

the virtual machine’s memory, and then the boot disk is unmounted.

When a virtual machine’s operating system crashes, its disks are not shut down in an

orderly manner. This should not pose a problem to a virtual machine running in full

virtualization mode because the pending disk entries are checked and corrected the next

time the operating system starts. If the disk is using a journaling le system, the journal

is replayed to update and coordinate any pending disk entries.

This type of system crash poses a potential problem for paravirtualized operating sys-

tems. If a paravirtualized operating system using a journaled le system crashes, any

pending disk entries cannot be updated and coordinated because the le system is ini-

tially mounted in read-only mode.

Therefore, it is recommended that you set virtual machine boot les, such as the kernel

and ramdisk, on a separate partition that is formatted with a non-journaling le system,

such as ext2.

46 Virtualization with Xen

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Belkin XM Commander Manual de usuario Pagina 52