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6.2 Xm (command line interface)

The xm tool is the primary tool for managing Xen from the console. The general

format of an xm command line is:

# xm command [switches] [arguments] [variables]

The available switches and arguments are dependent on the command chosen. The

variables may be set using declarations of the form variable=value and com-

mand line declarations override any of the values in the conﬁguration ﬁle being used,

including the standard variables described above and any custom variables (for in-

stance, the xmdefconfig ﬁle uses a vmid variable).

The available commands are as follows:

set-mem Request a domain to adjust its memory footprint.

create Create a new domain.

destroy Kill a domain immediately.

list List running domains.

shutdown Ask a domain to shutdown.

dmesg Fetch the Xen (not Linux!) boot output.

consoles Lists the available consoles.

console Connect to the console for a domain.

help Get help on xm commands.

save Suspend a domain to disk.

restore Restore a domain from disk.

pause Pause a domain’s execution.

unpause Unpause a domain.

pincpu Pin a domain to a CPU.

bvt Set BVT scheduler parameters for a domain.

bvt ctxallow Set the BVT context switching allowance for the system.

atropos Set the atropos parameters for a domain.

rrobin Set the round robin time slice for the system.

info Get information about the Xen host.

call Call a xend HTTP API function directly.

For a detailed overview of switches, arguments and variables to each command try

# xm help command

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Belkin XM Commander Manuel d'utilisateur Page 34