LU-8569 lfsck: handle linkEA overflow

[fs/lustre-release.git] / lustre / lfsck / lfsck_internal.h

diff --git a/lustre/lfsck/lfsck_internal.h b/lustre/lfsck/lfsck_internal.h
index fd3164c..dd89553 100644 (file)
--- a/lustre/lfsck/lfsck_internal.h
+++ b/lustre/lfsck/lfsck_internal.h
@@ -20,7 +20,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2013, 2015, Intel Corporation.
+ * Copyright (c) 2013, 2016, Intel Corporation.
  */
 /*
  * lustre/lfsck/lfsck_internal.h
@@ -111,7 +111,6 @@ struct lfsck_bookmark {
 enum lfsck_namespace_trace_flags {
        LNTF_CHECK_LINKEA       = 0x01,
        LNTF_CHECK_PARENT       = 0x02,
-       LNTF_SKIP_NLINK         = 0x04,
        LNTF_CHECK_ORPHAN       = 0x08,
        LNTF_UNCERTAIN_LMV      = 0x10,
        LNTF_RECHECK_NAME_HASH  = 0x20,
@@ -274,9 +273,14 @@ struct lfsck_namespace {
         * the MDTs that contain non-verified MDT-objects. */
        __u32   ln_bitmap_size;
 
-       __u32   ln_reserved_1;
+       /* Time for the latest LFSCK scan in seconds from the beginning. */
+       __u32   ln_time_latest_reset;
+
+       /* How many linkEA overflow timestamp have been cleared. */
+       __u64   ln_linkea_overflow_cleared;
+
        /* For further using. 256-bytes aligned now. */
-       __u64   ln_reserved[15];
+       __u64   ln_reserved[14];
 };
 
 enum lfsck_layout_inconsistency_type {
@@ -993,7 +997,7 @@ int lfsck_namespace_check_exist(const struct lu_env *env,
                                struct dt_object *dir,
                                struct dt_object *obj, const char *name);
 int __lfsck_links_read(const struct lu_env *env, struct dt_object *obj,
-                      struct linkea_data *ldata);
+                      struct linkea_data *ldata, bool with_rec);
 int lfsck_namespace_rebuild_linkea(const struct lu_env *env,
                                   struct lfsck_component *com,
                                   struct dt_object *obj,
@@ -1234,6 +1238,16 @@ static inline u32 lfsck_dev_idx(struct lfsck_instance *lfsck)
 }
 
 static inline struct dt_object *
+lfsck_object_find_by_dev_new(const struct lu_env *env, struct dt_device *dev,
+                            const struct lu_fid *fid)
+{
+       struct lu_object_conf   *conf = &lfsck_env_info(env)->lti_conf;
+
+       conf->loc_flags = LOC_F_NEW;
+       return lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, conf));
+}
+
+static inline struct dt_object *
 lfsck_object_find_by_dev_nowait(const struct lu_env *env, struct dt_device *dev,
                                const struct lu_fid *fid)
 {
@@ -1307,6 +1321,20 @@ lfsck_object_find_bottom_nowait(const struct lu_env *env,
 }
 
 static inline struct dt_object *
+lfsck_object_find_bottom_new(const struct lu_env *env,
+                            struct lfsck_instance *lfsck,
+                            const struct lu_fid *fid)
+{
+       struct dt_device *dev;
+
+       dev = lfsck_find_dev_by_fid(env, lfsck, fid);
+       if (IS_ERR(dev))
+               return (struct dt_object *)dev;
+
+       return lfsck_object_find_by_dev_new(env, dev, fid);
+}
+
+static inline struct dt_object *
 lfsck_object_locate(struct dt_device *dev, struct dt_object *obj)
 {
        if (lfsck_obj2dev(obj) == dev) {
@@ -1426,20 +1454,33 @@ static inline int lfsck_links_read(const struct lu_env *env,
 {
        ldata->ld_buf =
                lu_buf_check_and_alloc(&lfsck_env_info(env)->lti_linkea_buf,
-                                      PAGE_SIZE);
+                                      MAX_LINKEA_SIZE);
+
+       return __lfsck_links_read(env, obj, ldata, false);
+}
+
+/* Read linkEA for the given object, the linkEA should contain
+ * at least one entry, otherwise, -ENODATA will be returned. */
+static inline int lfsck_links_read_with_rec(const struct lu_env *env,
+                                           struct dt_object *obj,
+                                           struct linkea_data *ldata)
+{
+       ldata->ld_buf =
+               lu_buf_check_and_alloc(&lfsck_env_info(env)->lti_linkea_buf,
+                                      MAX_LINKEA_SIZE);
 
-       return __lfsck_links_read(env, obj, ldata);
+       return __lfsck_links_read(env, obj, ldata, true);
 }
 
-static inline int lfsck_links_read2(const struct lu_env *env,
-                                   struct dt_object *obj,
-                                   struct linkea_data *ldata)
+static inline int lfsck_links_read2_with_rec(const struct lu_env *env,
+                                            struct dt_object *obj,
+                                            struct linkea_data *ldata)
 {
        ldata->ld_buf =
                lu_buf_check_and_alloc(&lfsck_env_info(env)->lti_linkea_buf2,
-                                      PAGE_SIZE);
+                                      MAX_LINKEA_SIZE);
 
-       return __lfsck_links_read(env, obj, ldata);
+       return __lfsck_links_read(env, obj, ldata, true);
 }
 
 static inline struct lfsck_lmv *lfsck_lmv_get(struct lfsck_lmv *llmv)