[multipath] *bad bad nasty* map reload code path

* the uuid needs not be set for DM_DEVICE_RELOAD
* remove map upon map load/reload failure is *wrong* *wrong*
* "int op" superfluous

diff --git a/multipath/main.c b/multipath/main.c
index cafacae6c2634d8c5dd70be8ec06d939dc49da38..a20aad6425a11ee0ae097721275e224119cbb759 100644 (file)
--- a/multipath/main.c
+++ b/multipath/main.c
@@ -580,7 +580,6 @@ reinstate_paths (struct multipath * mpp)
 static int
 domap (struct multipath * mpp)
 {
-       int op = ACT_NOTHING;
        int r = 0;
 
        print_mp(mpp);
@@ -606,39 +605,26 @@ domap (struct multipath * mpp)
                return 0;
 
        case ACT_CREATE:
-               op = DM_DEVICE_CREATE;
+               r = dm_addmap(DM_DEVICE_CREATE, mpp->alias, DEFAULT_TARGET,
+                             mpp->params, mpp->size, mpp->wwid);
                break;
 
        case ACT_RELOAD:
-               op = DM_DEVICE_RELOAD;
+               r = dm_addmap(DM_DEVICE_RELOAD, mpp->alias, DEFAULT_TARGET,
+                             mpp->params, mpp->size, NULL);
                break;
 
        default:
                break;
        }
 
-               
-       /*
-        * device mapper creation or updating
-        * here we know we'll have garbage on stderr from
-        * libdevmapper. so shut it down temporarily.
-        */
-       dm_log_init_verbose(0);
-
-       r = dm_addmap(op, mpp->alias, DEFAULT_TARGET, mpp->params, mpp->size, mpp->wwid);
-
-       if (r == 0)
-               dm_simplecmd(DM_DEVICE_REMOVE, mpp->alias);
-       else if (op == DM_DEVICE_RELOAD)
+       if (r) {
+               /*
+                * DM_DEVICE_CREATE or DM_DEVICE_RELOAD succeeded
+                */
                dm_simplecmd(DM_DEVICE_RESUME, mpp->alias);
-
-       /*
-        * PG order is random, so we need to set the primary one
-        * upon create or reload
-        */
-       dm_switchgroup(mpp->alias, mpp->nextpg);
-
-       dm_log_init_verbose(1);
+               dm_switchgroup(mpp->alias, mpp->nextpg);
+       }
 
        return r;
 }