Get/Set LUN's ALUA group

Add support to Get/Set a Lun's current ALUA group through
its alua_tg_pt_gp file.

Signed-off-by: Mike Christie <mchristi@redhat.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/rtslib/target.py b/rtslib/target.py
index c2836db..d8dc655 100644
--- a/rtslib/target.py
+++ b/rtslib/target.py
@@ -582,6 +582,22 @@ class LUN(CFSNode):
                 if os.path.realpath("%s/%s" % (mlun.path, mlun.alias)) == self.path:
                     yield mlun
 
+    def _get_alua_tg_pt_gp_name(self):
+        self._check_self()
+
+        path = "%s/alua_tg_pt_gp" % self.path
+        group_name = fread(path).splitlines()[0]
+        return group_name.split(':')[1].strip()
+
+    def _set_alua_tg_pt_gp_name(self, group_name):
+        self._check_self()
+
+        path = "%s/alua_tg_pt_gp" % self.path
+        try:
+            fwrite(path, group_name)
+        except IOError as e:
+            raise RTSLibError("Cannot set ALUA Target Port Group: %s" % e)
+
     # LUN public stuff
 
     def delete(self):
@@ -615,6 +631,8 @@ class LUN(CFSNode):
             doc="Get the LUN alias.")
     mapped_luns = property(_list_mapped_luns,
             doc="List all MappedLUN objects referencing this LUN.")
+    alua_tg_pt_gp_name = property(_get_alua_tg_pt_gp_name, _set_alua_tg_pt_gp_name,
+            doc="Get and Set the LUN's ALUA Target Port Group")
 
     @classmethod
     def setup(cls, tpg_obj, lun, err_func):