libvirt users - May 2012 - free memory on hypervisor

i am trying to get the free memory on a hypervisor using libvert, with the
python api bindings
as per?http://libvirt.org/python.html, it should be pretty easy, however the
below is failing:

#conn is a connection object
freemem=libvirt.virNode.getFreeMemory(conn)

although this works fine:

software=libvirt.virConnect.getType(conn)
if software == ?'QEMU':
logging.debug('hypervisor is type QEMU')

On 05/04/2012 02:28 PM, John Wayne wrote:
> i am trying to get the free memory on a hypervisor using libvert, with the
python api bindings
> as per http://libvirt.org/python.html, it should be pretty easy, however
the below is failing:
>
> #conn is a connection object
> freemem=libvirt.virNode.getFreeMemory(conn)
There are 2 wrongs in here, the first, libvirt module hasn't
'virNode'
class, it should be 'virNodeDevice';
the second, 'virNodeDevice' class hasn't 'getFreeMemory'
method, which
belongs to 'virConnect' class,
so it should like this:
 >>> import libvirt
 >>> conn = libvirt.open(None)
 >>> conn.getFreeMemory()
228167680L

or

 >>> libvirt.virConnect.getFreeMemory(conn)
227864576L

You may use 'dir' to list all of class/method of libvirt/sub-class:

 >>>dir(libvirt)
 >>>dir(libvirt. virConnect)
> although this works fine:
>
> software=libvirt.virConnect.getType(conn)
> if software ==  'QEMU':
> logging.debug('hypervisor is type QEMU')
>
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