Belkin XM Commander Manuel d'utilisateur télécharger pdf (Page 24)

state Domain state consists of 5 ﬁelds:

r running

b blocked

p paused

s shutdown

c crashed

cputime How much CPU time (in seconds) the domain has used so far.

console TCP port accepting connections to the domain’s console.

The xm list command also supports a long output format when the -l switch is

used. This outputs the fulls details of the running domains in xend’s SXP conﬁguration

format.

For example, suppose the system is running the ttylinux domain as described earlier.

The list command should produce output somewhat like the following:

# xm list

Name Id Mem(MB) CPU State Time(s) Console

Domain-0 0 251 0 r---- 172.2

ttylinux 5 63 0 -b--- 3.0 9605

Here we can see the details for the ttylinux domain, as well as for domain 0 (which,

of course, is always running). Note that the console port for the ttylinux domain is

9605. This can be connected to by TCP using a terminal program (e.g. telnet or,

better, xencons). The simplest way to connect is to use the xm console command,

specifying the domain name or ID. To connect to the console of the ttylinux domain,

we could use any of the following:

# xm console ttylinux

# xm console 5

# xencons localhost 9605

4.2 Domain Save and Restore

The administrator of a Xen system may suspend a virtual machine’s current state into

a disk ﬁle in domain 0, allowing it to be resumed at a later time.

The ttylinux domain described earlier can be suspended to disk using the command:

# xm save ttylinux ttylinux.xen

This will stop the domain named ‘ttylinux’ and save its current state into a ﬁle called

ttylinux.xen.

To resume execution of this domain, use the xm restore command:

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Belkin XM Commander Manuel d'utilisateur Page 24