-omf_rc_trigger_script="omf_rc_plc_trigger"
-
-### this returns the kind of virtualization on the node
-# either 'vs' or 'lxc'
-# also caches it in /etc/planetlab/virt for next calls
-# could be promoted to core nm if need be
-virt_stamp="/etc/planetlab/virt"
-def get_node_virt ():
- try:
- return file(virt_stamp).read().strip()
- except:
- pass
- logger.log("Computing virt..")
- vs_retcod=subprocess.call ([ 'vserver', '--help' ])
- if vs_retcod == 0:
- virt='vs'
- else:
- virt='lxc'
- with file(virt_stamp,"w") as f:
- f.write(virt)
- return virt
-
-def command_in_slice (slicename, argv):
- # with vserver this can be done using vserver .. exec <trigger-script>
- # with lxc this is less clear as we are still discussing how lxcsu should behave
- # ideally we'd need to run lxcsu .. <trigger-script>
- virt=get_node_virt()
- if virt=='vs':
- return [ 'vserver', slicename, 'exec', ] + argv
- elif virt=='lxc':
- return [ 'lxcsu', slicename, ] + argv
- logger.log("command_in_slice: WARNING: could not find a valid virt")
- return argv