ganeti.cmdlib.instance

module documentation

Functions for running helper virtual machines to perform tasks on instances.

Function	`HelperVM`	Runs a given helper VM for a given instance.
Function	`RunWithHelperVM`	Runs a given helper VM for a given instance.

@contextlib.contextmanager
def HelperVM(lu, instance, vm_image, startup_timeout, vm_timeout, log_prefix=None, feedback_fn=None): ¶

Runs a given helper VM for a given instance.

Parameters
lu:`LogicalUnit`	the lu on whose behalf we execute
instance:`objects.Instance`	the instance definition
vm_image:string	the name of the helper VM image to dump on a temporary disk
startup_timeout:int	how long to wait for the helper VM to start up
vm_timeout:int	how long to wait for the helper VM to finish its work
log_prefix:string	a prefix for all log messages
feedback_fn:function	Function used to log progress

def RunWithHelperVM(lu, instance, vm_image, startup_timeout, vm_timeout, log_prefix=None, feedback_fn=None): ¶

Runs a given helper VM for a given instance.

Parameters
lu:`LogicalUnit`	the lu on whose behalf we execute
instance:`objects.Instance`	the instance definition
vm_image:string	the name of the helper VM image to dump on a temporary disk
startup_timeout:int	how long to wait for the helper VM to start up
vm_timeout:int	how long to wait for the helper VM to finish its work
log_prefix:string	a prefix for all log messages
feedback_fn:function	Function used to log progress

ganeti.cmdlib.instance_helpervm