fixing multipath flush problem in module_load_unload.py and config file

multipath flush was failing due to string not matching exactly as below,

nvme                   55964  4
nvme_core             183368  5 nvme

we were expecting only : "nvme                   55964  4"
the first line only. But it is matching all the line that contain the module name.
-w option resolve this as below.

nvme                   55964  4

multipath is added in config file for nvme module.

Signed-off-by: Naresh Bannoth <[email protected]>

io/driver/module_unload_load.py

@@ -73,7 +73,7 @@ def flush_mpath(self, mdl):
         """
         flush the multipath
         """
-        cmd = "lsmod | grep -i ^%s" % mdl
+        cmd = "lsmod | grep -iw ^%s" % mdl
         for i in range(20):
             if process.getoutput(cmd).split(" ")[-1] == '0':
                 return True
@@ -98,6 +98,7 @@ def module_load_unload(self, module_list):
                     for mod in sub_mod.split(' '):
                         if mod == 'multipath':
                             if self.flush_mpath(mdl) is False:
+                                self.error("failed to flush the multipath")
                                 self.error_modules.append(mdl)
                                 break
                         else:
@@ -106,18 +107,26 @@ def module_load_unload(self, module_list):
                             if linux_modules.module_is_loaded(mod) is True:
                                 self.error_modules.append(mod)
                                 break
+                self.log.info("error_module list before unloading: %s, iteration : %s" % (self.error_modules, _))
                 self.log.info("unloading module %s " % mdl)
                 linux_modules.unload_module(mdl)
                 time.sleep(self.load_unload_sleep_time)
                 if linux_modules.module_is_loaded(mdl) is True:
+                    self.log.info("failed to unload the module, iteration : %s" % _)
                     self.error_modules.append(mdl)
                     break
+                else:
+                    self.log.info("successfully unload: iteration : %s" % _)
                 self.log.info("loading module : %s " % mdl)
+                self.log.info("error_module list before loading: %s,iteration : %s" % (self.error_modules, _))
                 linux_modules.load_module(mdl)
                 time.sleep(self.load_unload_sleep_time)
                 if linux_modules.module_is_loaded(mdl) is False:
+                    self.log.info("failed to load the module, iteration : %s" % _)
                     self.error_modules.append(mdl)
                     break
+                else:
+                    self.log.info("successfully load: iteration : %s" % _)
 
     def test(self):
         """

io/driver/module_unload_load.py.data/config

@@ -5,3 +5,4 @@ qla2xxx=multipath
 lpfc=multipath
 ibmvfc=multipath
 nvme_fc=lpfc multipath
+nvme=multipath