conditionally update uuids in the map file after Create()

[thirdparty/mdadm.git] / Create.c

diff --git a/Create.c b/Create.c
index 8a73799c4448c727308228dc51c34049093ebe65..c96b31950bc95c5c119e2de95906dddd1e726c5c 100644 (file)
--- a/Create.c
+++ b/Create.c
@@ -792,7 +792,39 @@ int Create(struct supertype *st, char *mddev,
                            dv == moved_disk && dnum != insert_point) break;
                }
                if (pass == 1) {
+                       struct mdinfo info_new;
+                       struct map_ent *me = NULL;
+
+                       /* check to see if the uuid has changed due to these
+                        * metadata changes, and if so update the member array
+                        * and container uuid.  Note ->write_init_super clears
+                        * the subarray cursor such that ->getinfo_super once
+                        * again returns container info.
+                        */
+                       map_lock(&map);
+                       st->ss->getinfo_super(st, &info_new);
+                       if (st->ss->external && level != LEVEL_CONTAINER &&
+                           !same_uuid(info_new.uuid, info.uuid, 0)) {
+                               map_update(&map, fd2devnum(mdfd),
+                                          info_new.text_version,
+                                          info_new.uuid, chosen_name);
+                               me = map_by_devnum(&map, st->container_dev);
+                       }
+
                        st->ss->write_init_super(st);
+
+                       /* update parent container uuid */
+                       if (me) {
+                               char *path = strdup(me->path);
+
+                               st->ss->getinfo_super(st, &info_new);
+                               map_update(&map, st->container_dev,
+                                          info_new.text_version,
+                                          info_new.uuid, path);
+                               free(path);
+                       }
+                       map_unlock(&map);
+
                        flush_metadata_updates(st);
                }
        }