LU-1267 lfsck: rebuild LAST_ID

[fs/lustre-release.git] / lustre / include / lustre_lfsck.h

diff --git a/lustre/include/lustre_lfsck.h b/lustre/include/lustre_lfsck.h
index a833018..b20eff9 100644 (file)
--- a/lustre/include/lustre_lfsck.h
+++ b/lustre/include/lustre_lfsck.h
@@ -38,6 +38,34 @@
 #include <lu_object.h>
 #include <dt_object.h>
 
+/**
+ * status machine:
+ *
+ *                                     LS_INIT
+ *                                        |
+ *                                  (lfsck|start)
+ *                                        |
+ *                                        v
+ *                                LS_SCANNING_PHASE1
+ *                                     |       ^
+ *                                     |       :
+ *                                     | (lfsck:restart)
+ *                                     |       :
+ *                                     v       :
+ *     -----------------------------------------------------------------
+ *     |                   |^          |^         |^         |^        |^
+ *     |                   |:          |:         |:         |:        |:
+ *     v                   v:          v:         v:         v:        v:
+ * LS_SCANNING_PHASE2  LS_FAILED  LS_STOPPED  LS_PAUSED LS_CRASHED LS_PARTIAL
+ *     |       ^           ^:          ^:         ^:         ^:        ^:
+ *     |       :           |:          |:         |:         |:        |:
+ *     | (lfsck:restart)   |:          |:         |:         |:        |:
+ *     v       :           |v          |v         |v         |v        |v
+ *     -----------------------------------------------------------------
+ *         |
+ *         v
+ *    LS_COMPLETED
+ */
 enum lfsck_status {
        /* The lfsck file is new created, for new MDT, upgrading from old disk,
         * or re-creating the lfsck file manually. */
@@ -77,8 +105,17 @@ struct lfsck_start_param {
        struct ldlm_namespace   *lsp_namespace;
 };
 
+enum lfsck_events {
+       LE_LASTID_REBUILDING    = 1,
+       LE_LASTID_REBUILT       = 2,
+};
+
+typedef int (*lfsck_out_notify)(const struct lu_env *env, void *data,
+                               enum lfsck_events event);
+
 int lfsck_register(const struct lu_env *env, struct dt_device *key,
-                  struct dt_device *next, bool master);
+                  struct dt_device *next, lfsck_out_notify notify,
+                  void *notify_data, bool master);
 void lfsck_degister(const struct lu_env *env, struct dt_device *key);
 
 int lfsck_start(const struct lu_env *env, struct dt_device *key,