LU-3336 lfsck: use rbtree to record OST-object accessing

[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..e992346 100644 (file)
--- a/lustre/include/lustre_lfsck.h
+++ b/lustre/include/lustre_lfsck.h
@@ -38,6 +38,35 @@
 #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
+ *                       (CO_)       (CO_)      (CO_)
+ *     |       ^           ^:          ^:         ^:         ^:        ^:
+ *     |       :           |:          |:         |:         |:        |:
+ *     | (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. */
@@ -69,26 +98,79 @@ enum lfsck_status {
        /* Some OST/MDT failed during the LFSCK, or not join the LFSCK. */
        LS_PARTIAL              = 8,
 
+       /* The LFSCK is failed because its controller is failed. */
+       LS_CO_FAILED            = 9,
+
+       /* The LFSCK is stopped because its controller is stopped. */
+       LS_CO_STOPPED           = 10,
+
+       /* The LFSCK is paused because its controller is paused. */
+       LS_CO_PAUSED            = 11,
+
        LS_MAX
 };
 
 struct lfsck_start_param {
-       struct lfsck_start      *lsp_start;
        struct ldlm_namespace   *lsp_namespace;
+       struct lfsck_start      *lsp_start;
+       __u32                    lsp_index;
+       unsigned int             lsp_index_valid:1;
 };
 
+enum lfsck_events {
+       LE_LASTID_REBUILDING    = 1,
+       LE_LASTID_REBUILT       = 2,
+       LE_PHASE1_DONE          = 3,
+       LE_PHASE2_DONE          = 4,
+       LE_START                = 5,
+       LE_STOP                 = 6,
+       LE_QUERY                = 7,
+       LE_FID_ACCESSED         = 8,
+};
+
+enum lfsck_event_flags {
+       LEF_TO_OST              = 0x00000001,
+       LEF_FROM_OST            = 0x00000002,
+       LEF_FORCE_STOP          = 0x00000004,
+};
+
+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, struct obd_device *obd,
+                  lfsck_out_notify notify, void *notify_data, bool master);
 void lfsck_degister(const struct lu_env *env, struct dt_device *key);
 
+int lfsck_add_target(const struct lu_env *env, struct dt_device *key,
+                    struct dt_device *tgt, struct obd_export *exp,
+                    __u32 index, bool for_ost);
+void lfsck_del_target(const struct lu_env *env, struct dt_device *key,
+                     struct dt_device *tgt, __u32 index, bool for_ost);
+
 int lfsck_start(const struct lu_env *env, struct dt_device *key,
                struct lfsck_start_param *lsp);
 int lfsck_stop(const struct lu_env *env, struct dt_device *key,
-              bool pause);
+              struct lfsck_stop *stop);
+int lfsck_in_notify(const struct lu_env *env, struct dt_device *key,
+                   struct lfsck_request *lr);
+int lfsck_query(const struct lu_env *env, struct dt_device *key,
+               struct lfsck_request *lr);
 
 int lfsck_get_speed(struct dt_device *key, void *buf, int len);
 int lfsck_set_speed(struct dt_device *key, int val);
+int lfsck_get_windows(struct dt_device *key, void *buf, int len);
+int lfsck_set_windows(struct dt_device *key, int val);
 
 int lfsck_dump(struct dt_device *key, void *buf, int len, enum lfsck_type type);
 
+static inline void lfsck_pack_rfa(struct lfsck_request *lr,
+                                 const struct lu_fid *fid)
+{
+       memset(lr, 0, sizeof(*lr));
+       lr->lr_event = LE_FID_ACCESSED;
+       lr->lr_active = LT_LAYOUT;
+       lr->lr_fid = *fid;
+}
+
 #endif /* _LUSTRE_LFSCK_H */