When running xm commands such as "xm list" on XEN 4 Hypervisors, the message is returned:
Fatal: Execution of xenstore-write "/local/domain/0/backend/vif/82/WARNING: xend/xm is deprecated.
XEN 4 Hypervisors
As a possible workaround you can comment the following line in /usr/sbin/xm on the hv
#print >>sys.stderr, ("WARNING: xend/xm is deprecated.")
The latest version of XEN currently supported is XEN 4.2.5
This fix for 4.4.1 is not currently well tested - it should only suppress the errors, as they are warnings that XEN is moving away from this usage but the commands themselves work fine.