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LU-13124 scrub: check for multiple linked file
[fs/lustre-release.git] / lustre / lfsck / lfsck_internal.h
index 3b13041..e6a8a48 100644 (file)
@@ -20,7 +20,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2013, 2016, Intel Corporation.
+ * Copyright (c) 2013, 2017, Intel Corporation.
  */
 /*
  * lustre/lfsck/lfsck_internal.h
@@ -110,6 +110,7 @@ enum lfsck_namespace_trace_flags {
        LNTF_CHECK_ORPHAN       = 0x08,
        LNTF_UNCERTAIN_LMV      = 0x10,
        LNTF_RECHECK_NAME_HASH  = 0x20,
+       LNTF_CHECK_AGENT_ENTRY  = 0x40,
        LNTF_ALL                = 0xff
 };
 
@@ -278,8 +279,11 @@ struct lfsck_namespace {
        /* How many linkEA overflow timestamp have been cleared. */
        __u64   ln_linkea_overflow_cleared;
 
+       /* How many agent entries have been repaired. */
+       __u64   ln_agent_entries_repaired;
+
        /* For further using. 256-bytes aligned now. */
-       __u64   ln_reserved[12];
+       __u64   ln_reserved[11];
 };
 
 enum lfsck_layout_inconsistency_type {
@@ -452,9 +456,6 @@ struct lfsck_operations {
                          struct lfsck_start_param *lsp);
 };
 
-#define TGT_PTRS               256     /* number of pointers at 1st level */
-#define TGT_PTRS_PER_BLOCK     256     /* number of pointers at 2nd level */
-
 struct lfsck_tgt_desc {
        struct list_head   ltd_orphan_list;
        struct dt_device  *ltd_tgt;
@@ -473,6 +474,7 @@ struct lfsck_tgt_desc {
        __u32              ltd_layout_gen;
        __u32              ltd_namespace_gen;
        unsigned int       ltd_dead:1,
+                          ltd_retry_start:1,
                           ltd_layout_done:1,
                           ltd_namespace_done:1,
                           ltd_synced_failures:1;
@@ -550,7 +552,7 @@ struct lfsck_component {
        struct lfsck_instance   *lc_lfsck;
        struct dt_object        *lc_obj;
        struct lfsck_sub_trace_obj lc_sub_trace_objs[LFSCK_STF_COUNT];
-       struct lfsck_operations *lc_ops;
+       const struct lfsck_operations *lc_ops;
        void                    *lc_file_ram;
        void                    *lc_file_disk;
        void                    *lc_data;
@@ -616,7 +618,8 @@ struct lfsck_lmv {
                                         ll_lmv_updated:1,
                                         ll_inline:1,
                                         ll_failed:1,
-                                        ll_ignore:1;
+                                        ll_ignore:1,
+                                        ll_counted:1;
        struct lfsck_slave_lmv_rec      *ll_lslr; /* may be vmalloc'd */
 };
 
@@ -669,6 +672,7 @@ struct lfsck_instance {
        atomic_t                  li_ref;
        atomic_t                  li_double_scan_count;
        struct ptlrpc_thread      li_thread;
+       struct task_struct       *li_task;
 
        /* The time for last checkpoint, seconds */
        time64_t                  li_time_last_checkpoint;
@@ -743,10 +747,16 @@ struct lfsck_instance {
                                  li_drop_dryrun:1, /* Ever dryrun, not now. */
                                  li_master:1, /* Master instance or not. */
                                  li_current_oit_processed:1,
-                                 li_start_unplug:1;
+                                 li_start_unplug:1,
+                                 li_stopping:1;
        struct lfsck_rec_lmv_save li_rec_lmv_save[LFSCK_REC_LMV_MAX_DEPTH];
 };
 
+static inline bool lfsck_is_dryrun(struct lfsck_instance *lfsck)
+{
+       return lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN;
+}
+
 struct lfsck_async_interpret_args {
        struct lfsck_component          *laia_com;
        struct lfsck_tgt_descs          *laia_ltds;
@@ -839,7 +849,7 @@ struct lfsck_assistant_data {
        struct ptlrpc_thread                     lad_thread;
        struct task_struct                      *lad_task;
 
-       struct lfsck_assistant_operations       *lad_ops;
+       const struct lfsck_assistant_operations *lad_ops;
 
        struct cfs_bitmap                               *lad_bitmap;
 
@@ -847,13 +857,16 @@ struct lfsck_assistant_data {
        int                                      lad_prefetched;
        int                                      lad_assistant_status;
        int                                      lad_post_result;
-       unsigned int                             lad_to_post:1,
-                                                lad_to_double_scan:1,
-                                                lad_in_double_scan:1,
-                                                lad_exit:1,
-                                                lad_incomplete:1;
+       unsigned long                            lad_flags;
        bool                                     lad_advance_lock;
 };
+enum {
+       LAD_TO_POST = 0,
+       LAD_TO_DOUBLE_SCAN = 1,
+       LAD_IN_DOUBLE_SCAN = 2,
+       LAD_EXIT = 3,
+       LAD_INCOMPLETE = 4,
+};
 
 #define LFSCK_TMPBUF_LEN       64
 
@@ -895,7 +908,7 @@ struct lfsck_thread_info {
        struct ldlm_res_id      lti_resid;
        struct filter_fid       lti_ff;
        struct dt_allocation_hint lti_hint;
-       struct lu_orphan_rec_v2 lti_rec;
+       struct lu_orphan_rec_v3 lti_rec;
        struct lov_user_md      lti_lum;
        struct dt_insert_rec    lti_dt_rec;
        struct lu_object_conf   lti_conf;
@@ -915,6 +928,10 @@ int lfsck_ibits_lock(const struct lu_env *env, struct lfsck_instance *lfsck,
                     struct dt_object *obj, struct lustre_handle *lh,
                     __u64 bits, enum ldlm_mode mode);
 void lfsck_ibits_unlock(struct lustre_handle *lh, enum ldlm_mode mode);
+int lfsck_remote_lookup_lock(const struct lu_env *env,
+                            struct lfsck_instance *lfsck,
+                            struct dt_object *pobj, struct dt_object *obj,
+                            struct lustre_handle *lh, enum ldlm_mode mode);
 int lfsck_lock(const struct lu_env *env, struct lfsck_instance *lfsck,
               struct dt_object *obj, const char *name,
               struct lfsck_lock_handle *llh, __u64 bits, enum ldlm_mode mode);
@@ -931,7 +948,7 @@ void lfsck_component_cleanup(const struct lu_env *env,
                             struct lfsck_component *com);
 void lfsck_instance_cleanup(const struct lu_env *env,
                            struct lfsck_instance *lfsck);
-void lfsck_bits_dump(struct seq_file *m, int bits, const char *names[],
+void lfsck_bits_dump(struct seq_file *m, int bits, const char *const names[],
                     const char *prefix);
 void lfsck_time_dump(struct seq_file *m, time64_t time, const char *name);
 void lfsck_pos_dump(struct seq_file *m, struct lfsck_position *pos,
@@ -943,7 +960,7 @@ void lfsck_control_speed(struct lfsck_instance *lfsck);
 void lfsck_control_speed_by_self(struct lfsck_component *com);
 void lfsck_thread_args_fini(struct lfsck_thread_args *lta);
 struct lfsck_assistant_data *
-lfsck_assistant_data_init(struct lfsck_assistant_operations *lao,
+lfsck_assistant_data_init(const struct lfsck_assistant_operations *lao,
                          const char *name);
 struct lfsck_assistant_object *
 lfsck_assistant_object_init(const struct lu_env *env, const struct lu_fid *fid,
@@ -1027,8 +1044,9 @@ int lfsck_namespace_repair_dirent(const struct lu_env *env,
                                  struct dt_object *child,
                                  const char *name, const char *name2,
                                  __u16 type, bool update, bool dec);
-int lfsck_verify_linkea(const struct lu_env *env, struct dt_object *obj,
-                       const struct lu_name *cname, const struct lu_fid *pfid);
+int lfsck_verify_linkea(const struct lu_env *env, struct lfsck_instance *lfsck,
+                       struct dt_object *obj, const struct lu_name *cname,
+                       const struct lu_fid *pfid);
 int lfsck_links_get_first(const struct lu_env *env, struct dt_object *obj,
                          char *name, struct lu_fid *pfid);
 int lfsck_update_name_entry(const struct lu_env *env,
@@ -1040,7 +1058,9 @@ int lfsck_namespace_setup(const struct lu_env *env,
 
 /* lfsck_striped_dir.c */
 void lfsck_lmv_put(const struct lu_env *env, struct lfsck_lmv *llmv);
-int lfsck_read_stripe_lmv(const struct lu_env *env, struct dt_object *obj,
+int lfsck_read_stripe_lmv(const struct lu_env *env,
+                         struct lfsck_instance *lfsck,
+                         struct dt_object *obj,
                          struct lmv_mds_md_v1 *lmv);
 int lfsck_shard_name_to_index(const struct lu_env *env, const char *name,
                              int namelen, __u16 type,
@@ -1049,6 +1069,7 @@ bool lfsck_is_valid_slave_name_entry(const struct lu_env *env,
                                     struct lfsck_lmv *llmv,
                                     const char *name, int namelen);
 int lfsck_namespace_check_name(const struct lu_env *env,
+                              struct lfsck_instance *lfsck,
                               struct dt_object *parent,
                               struct dt_object *child,
                               const struct lu_name *cname);
@@ -1083,19 +1104,14 @@ int lfsck_layout_setup(const struct lu_env *env, struct lfsck_instance *lfsck);
 
 extern const char dot[];
 extern const char dotdot[];
-extern const char *lfsck_flags_names[];
-extern const char *lfsck_param_names[];
+extern const char *const lfsck_flags_names[];
+extern const char *const lfsck_param_names[];
 extern struct lu_context_key lfsck_thread_key;
 
-static inline bool name_is_dot_or_dotdot(const char *name, int namelen)
-{
-       return name[0] == '.' &&
-              (namelen == 1 || (namelen == 2 && name[1] == '.'));
-}
-
 static inline struct dt_device *lfsck_obj2dev(struct dt_object *obj)
 {
-       return container_of0(obj->do_lu.lo_dev, struct dt_device, dd_lu_dev);
+       return container_of_safe(obj->do_lu.lo_dev, struct dt_device,
+                                dd_lu_dev);
 }
 
 static inline struct lfsck_thread_info *
@@ -1428,7 +1444,7 @@ static inline void lfsck_lad_set_bitmap(const struct lu_env *env,
 
        if (likely(bitmap->size > index)) {
                cfs_bitmap_set(bitmap, index);
-               lad->lad_incomplete = 1;
+               set_bit(LAD_INCOMPLETE, &lad->lad_flags);
        } else if (com->lc_type == LFSCK_TYPE_NAMESPACE) {
                struct lfsck_namespace *ns = com->lc_file_ram;
 
@@ -1496,6 +1512,8 @@ static inline void lfsck_lmv_header_le_to_cpu(struct lmv_mds_md_v1 *dst,
        dst->lmv_master_mdt_index = le32_to_cpu(src->lmv_master_mdt_index);
        dst->lmv_hash_type = le32_to_cpu(src->lmv_hash_type);
        dst->lmv_layout_version = le32_to_cpu(src->lmv_layout_version);
+       dst->lmv_migrate_offset = le32_to_cpu(src->lmv_migrate_offset);
+       dst->lmv_migrate_hash = le32_to_cpu(src->lmv_migrate_hash);
 }
 
 static inline void lfsck_lmv_header_cpu_to_le(struct lmv_mds_md_v1 *dst,
@@ -1506,6 +1524,8 @@ static inline void lfsck_lmv_header_cpu_to_le(struct lmv_mds_md_v1 *dst,
        dst->lmv_master_mdt_index = cpu_to_le32(src->lmv_master_mdt_index);
        dst->lmv_hash_type = cpu_to_le32(src->lmv_hash_type);
        dst->lmv_layout_version = cpu_to_le32(src->lmv_layout_version);
+       dst->lmv_migrate_offset = cpu_to_le32(src->lmv_migrate_offset);
+       dst->lmv_migrate_hash = cpu_to_le32(src->lmv_migrate_hash);
 }
 
 static inline struct lfsck_assistant_object *
@@ -1523,4 +1543,19 @@ lfsck_assistant_object_put(const struct lu_env *env,
        if (atomic_dec_and_test(&lso->lso_ref))
                OBD_FREE_PTR(lso);
 }
+
+static inline struct thandle*
+lfsck_trans_create(const struct lu_env *env, struct dt_device *dev,
+                  struct lfsck_instance *lfsck)
+{
+       if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN) {
+               CERROR("%s: transaction is being created in DRYRUN mode!\n",
+                      lfsck_lfsck2name(lfsck));
+
+               dump_stack();
+               return ERR_PTR(-EINVAL);
+       }
+
+       return dt_trans_create(env, dev);
+}
 #endif /* _LFSCK_INTERNAL_H */