X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Flfsck%2Flfsck_internal.h;h=287ae97426670f1621b51cb8ae1362fcd7183c7f;hb=4a656bc480baeb7ca2745a9565742fbcaedd81c1;hp=1ce764e0d26f74713b179510c3e2ed4e92c9cab1;hpb=ad6dd123cc475e8babcc1b8698fc4d1963841832;p=fs%2Flustre-release.git diff --git a/lustre/lfsck/lfsck_internal.h b/lustre/lfsck/lfsck_internal.h index 1ce764e..287ae97 100644 --- a/lustre/lfsck/lfsck_internal.h +++ b/lustre/lfsck/lfsck_internal.h @@ -20,7 +20,7 @@ * GPL HEADER END */ /* - * Copyright (c) 2013, Intel Corporation. + * Copyright (c) 2013, 2014, Intel Corporation. */ /* * lustre/lfsck/lfsck_internal.h @@ -47,7 +47,7 @@ #include #include -#define HALF_SEC (HZ >> 1) +#define HALF_SEC msecs_to_jiffies(MSEC_PER_SEC >> 1) #define LFSCK_CHECKPOINT_INTERVAL 60 enum lfsck_flags { @@ -113,6 +113,8 @@ enum lfsck_namespace_trace_flags { LNTF_CHECK_PARENT = 0x02, LNTF_SKIP_NLINK = 0x04, LNTF_CHECK_ORPHAN = 0x08, + LNTF_UNCERTAIN_LMV = 0x10, + LNTF_RECHECK_NAME_HASH = 0x20, LNTF_ALL = 0xff }; @@ -234,13 +236,47 @@ struct lfsck_namespace { /* How many objects under /lost+found failed to be processed. */ __u64 ln_local_lpf_failed; + /* How many striped directories (master) have been scanned. */ + __u64 ln_striped_dirs_scanned; + + /* How many striped directories (master) have been repaired. */ + __u64 ln_striped_dirs_repaired; + + /* How many striped directories (master) failed verification. */ + __u64 ln_striped_dirs_failed; + + /* How many striped directories (master) has been disabled. */ + __u64 ln_striped_dirs_disabled; + + /* How many striped directory's (master) have been skipped + * (for shards verification) because of lost master LMV EA. */ + __u64 ln_striped_dirs_skipped; + + /* How many striped directory's shards (slave) have been scanned. */ + __u64 ln_striped_shards_scanned; + + /* How many striped directory's shards (slave) have been repaired. */ + __u64 ln_striped_shards_repaired; + + /* How many striped directory's shards (slave) failed verification. */ + __u64 ln_striped_shards_failed; + + /* How many striped directory's shards (slave) have been skipped + * (for name hash verification) because do not know whether the slave + * LMV EA is valid or not. */ + __u64 ln_striped_shards_skipped; + + /* How many name entries under striped directory with bad name + * hash have been repaired. */ + __u64 ln_name_hash_repaired; + /* The size of MDT targets bitmap with nbits. Such bitmap records * the MDTs that contain non-verified MDT-objects. */ __u32 ln_bitmap_size; __u32 ln_reserved_1; /* For further using. 256-bytes aligned now. */ - __u64 ln_reserved[25]; + __u64 ln_reserved[15]; }; enum lfsck_layout_inconsistency_type { @@ -337,6 +373,12 @@ struct lfsck_operations { struct lfsck_component *com, bool new_checked); + void (*lfsck_close_dir)(const struct lu_env *env, + struct lfsck_component *com); + + int (*lfsck_open_dir)(const struct lu_env *env, + struct lfsck_component *com); + int (*lfsck_checkpoint)(const struct lu_env *env, struct lfsck_component *com, bool init); @@ -404,7 +446,7 @@ struct lfsck_tgt_desc { unsigned int ltd_dead:1, ltd_layout_done:1, ltd_namespace_done:1, - ltd_namespace_failed:1; + ltd_synced_failures:1; }; struct lfsck_tgt_desc_idx { @@ -438,6 +480,15 @@ struct lfsck_tgt_descs { #define OST_TGT(lfsck, index) LTD_TGT(&lfsck->li_ost_descs, index) #define MDT_TGT(lfsck, index) LTD_TGT(&lfsck->li_mdt_descs, index) +#define LFSCK_STF_BITS 4 +/* If want to adjust the LFSCK_STF_COUNT, please change LFSCK_STF_BITS. */ +#define LFSCK_STF_COUNT (1 << LFSCK_STF_BITS) + +struct lfsck_sub_trace_obj { + struct dt_object *lsto_obj; + struct mutex lsto_mutex; +}; + struct lfsck_component { /* into lfsck_instance::li_list_(scan,double_scan,idle} */ struct list_head lc_link; @@ -451,6 +502,7 @@ struct lfsck_component { struct lfsck_position lc_pos_start; 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; void *lc_file_ram; void *lc_file_disk; @@ -474,6 +526,75 @@ struct lfsck_component { __u16 lc_type; }; +#define LFSCK_LMV_MAX_STRIPES LMV_MAX_STRIPE_COUNT +#define LFSCK_LMV_DEF_STRIPES 4 + +/* Warning: NOT change the lfsck_slave_lmv_flags members order, + * otherwise the lfsck_record_lmv() may be wrong. */ +enum lfsck_slave_lmv_flags { + LSLF_NONE = 0, + LSLF_BAD_INDEX2 = 1, + LSLF_NO_LMVEA = 2, + LSLF_DANGLING = 3, + LSLF_BAD_INDEX1 = 4, +}; + +/* When the namespace LFSCK scans a striped directory, it will record all + * the known shards' information in the structure "lfsck_slave_lmv_rec", + * including the shard's FID, index, slave LMV EA, and so on. Each shard + * will take one lfsck_slave_lmv_rec slot. After the 1st cycle scanning + * the striped directory, the LFSCK will get all the information about + * whether there are some inconsistency, and then it can repair them in + * the 2nd cycle scanning. */ +struct lfsck_slave_lmv_rec { + struct lu_fid lslr_fid; + __u32 lslr_stripe_count; + __u32 lslr_index; /* the index in name or in slave lmv */ + __u32 lslr_hash_type; + __u32 lslr_flags; +}; + +struct lfsck_lmv { + struct lmv_mds_md_v1 ll_lmv; + atomic_t ll_ref; + int ll_stripes_allocated; + int ll_stripes_filled; + int ll_exit_value; + __u32 ll_max_stripe_count; + __u32 ll_max_filled_off; + __u32 ll_hash_type; + unsigned int ll_lmv_master:1, + ll_lmv_slave:1, + ll_lmv_verified:1, + ll_lmv_updated:1, + ll_inline:1, + ll_failed:1, + ll_ignore:1; + struct lfsck_slave_lmv_rec *ll_lslr; +}; + +/* If the namespace LFSCK finds that the master MDT-object of a striped + * directory lost its master LMV EA, it will re-generate the master LMV + * EA and notify the LFSCK instance on the MDT on which the striped dir + * master MDT-object resides to rescan the striped directory. To do that, + * the notify handler will insert a "lfsck_lmv_unit" structure into the + * lfsck::li_list_lmv. The LFSCK instance will scan such list from time + * to time to check whether needs to rescan some stirped directories. */ +struct lfsck_lmv_unit { + struct list_head llu_link; + struct lfsck_lmv llu_lmv; + struct dt_object *llu_obj; + struct lfsck_instance *llu_lfsck; +}; + +struct lfsck_rec_lmv_save { + struct lu_fid lrls_fid; + struct lmv_mds_md_v1 lrls_lmv; +}; + +/* Allow lfsck_record_lmv() to be called recursively at most three times. */ +#define LFSCK_REC_LMV_MAX_DEPTH 3 + struct lfsck_instance { struct mutex li_mutex; spinlock_t li_lock; @@ -495,6 +616,9 @@ struct lfsck_instance { /* For the components those are not scanning now. */ struct list_head li_list_idle; + /* For the lfsck_lmv_unit to be handled. */ + struct list_head li_list_lmv; + atomic_t li_ref; atomic_t li_double_scan_count; struct ptlrpc_thread li_thread; @@ -514,14 +638,18 @@ struct lfsck_instance { struct local_oid_storage *li_los; struct lu_fid li_local_root_fid; /* backend root "/" */ struct lu_fid li_global_root_fid; /* /ROOT */ + struct dt_object *li_lfsck_dir; struct dt_object *li_bookmark_obj; struct dt_object *li_lpf_obj; + struct dt_object *li_lpf_root_obj; struct lu_client_seq *li_seq; struct lfsck_bookmark li_bookmark_ram; struct lfsck_bookmark li_bookmark_disk; struct lfsck_position li_pos_current; struct lfsck_position li_pos_checkpoint; + struct lfsck_lmv *li_lmv; + /* Obj for otable-based iteration */ struct dt_object *li_obj_oit; @@ -569,6 +697,7 @@ struct lfsck_instance { li_master:1, /* Master instance or not. */ li_current_oit_processed:1, li_start_unplug:1; + struct lfsck_rec_lmv_save li_rec_lmv_save[LFSCK_REC_LMV_MAX_DEPTH]; }; struct lfsck_async_interpret_args { @@ -595,6 +724,7 @@ struct lfsck_assistant_req { struct lfsck_namespace_req { struct lfsck_assistant_req lnr_lar; struct dt_object *lnr_obj; + struct lfsck_lmv *lnr_lmv; struct lu_fid lnr_fid; __u64 lnr_oit_cookie; __u64 lnr_dir_cookie; @@ -682,8 +812,6 @@ struct lfsck_thread_info { struct lu_fid lti_fid; struct lu_fid lti_fid2; struct lu_fid lti_fid3; - struct lu_fid lti_fid4; - struct lu_fid lti_fid5; struct lu_attr lti_la; struct lu_attr lti_la2; struct lu_attr lti_la3; @@ -697,12 +825,14 @@ struct lfsck_thread_info { /* There will be '\0' at the end of the name. */ char lti_key[sizeof(struct lu_dirent) + NAME_MAX + 1]; char lti_tmpbuf[LFSCK_TMPBUF_LEN]; + char lti_tmpbuf2[LFSCK_TMPBUF_LEN]; struct lfsck_request lti_lr; struct lfsck_async_interpret_args lti_laia; struct lfsck_async_interpret_args lti_laia2; struct lfsck_start lti_start; struct lfsck_stop lti_stop; ldlm_policy_data_t lti_policy; + struct ldlm_enqueue_info lti_einfo; struct ldlm_res_id lti_resid; union { struct filter_fid_old lti_old_pfid; @@ -714,6 +844,10 @@ struct lfsck_thread_info { struct dt_insert_rec lti_dt_rec; struct lu_object_conf lti_conf; struct lu_seq_range lti_range; + struct lmv_mds_md_v1 lti_lmv; + struct lmv_mds_md_v1 lti_lmv2; + struct lmv_mds_md_v1 lti_lmv3; + struct lmv_mds_md_v1 lti_lmv4; }; /* lfsck_lib.c */ @@ -726,7 +860,6 @@ void lfsck_ibits_unlock(struct lustre_handle *lh, ldlm_mode_t mode); int lfsck_find_mdt_idx_by_fid(const struct lu_env *env, struct lfsck_instance *lfsck, const struct lu_fid *fid); -int lfsck_create_lpf(const struct lu_env *env, struct lfsck_instance *lfsck); int lfsck_verify_lpf(const struct lu_env *env, struct lfsck_instance *lfsck); struct lfsck_instance *lfsck_instance_find(struct dt_device *key, bool ref, bool unlink); @@ -772,6 +905,10 @@ void lfsck_quit_generic(const struct lu_env *env, /* lfsck_engine.c */ int lfsck_unpack_ent(struct lu_dirent *ent, __u64 *cookie, __u16 *type); +void lfsck_close_dir(const struct lu_env *env, + struct lfsck_instance *lfsck, int result); +int lfsck_open_dir(const struct lu_env *env, + struct lfsck_instance *lfsck, __u64 cookie); int lfsck_master_engine(void *args); int lfsck_assistant_engine(void *args); @@ -790,6 +927,9 @@ int lfsck_namespace_trace_update(const struct lu_env *env, struct lfsck_component *com, const struct lu_fid *fid, const __u8 flags, bool add); +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); int lfsck_namespace_rebuild_linkea(const struct lu_env *env, @@ -811,10 +951,6 @@ int lfsck_verify_linkea(const struct lu_env *env, struct dt_device *dev, 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_remove_name_entry(const struct lu_env *env, - struct lfsck_instance *lfsck, - struct dt_object *parent, - const char *name, __u32 type); int lfsck_update_name_entry(const struct lu_env *env, struct lfsck_instance *lfsck, struct dt_object *parent, const char *name, @@ -822,6 +958,46 @@ int lfsck_update_name_entry(const struct lu_env *env, int lfsck_namespace_setup(const struct lu_env *env, struct lfsck_instance *lfsck); +/* 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, + struct lmv_mds_md_v1 *lmv); +int lfsck_shard_name_to_index(const struct lu_env *env, const char *name, + int namelen, __u16 type, + const struct lu_fid *fid); +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 dt_object *parent, + struct dt_object *child, + const struct lu_name *cname); +int lfsck_namespace_update_lmv(const struct lu_env *env, + struct lfsck_component *com, + struct dt_object *obj, + struct lmv_mds_md_v1 *lmv, bool locked); +int lfsck_namespace_verify_stripe_slave(const struct lu_env *env, + struct lfsck_component *com, + struct dt_object *obj, + struct lfsck_lmv *llmv); +int lfsck_namespace_scan_shard(const struct lu_env *env, + struct lfsck_component *com, + struct dt_object *child); +int lfsck_namespace_notify_lmv_master_local(const struct lu_env *env, + struct lfsck_component *com, + struct dt_object *obj); +int lfsck_namespace_repair_bad_name_hash(const struct lu_env *env, + struct lfsck_component *com, + struct dt_object *shard, + struct lfsck_lmv *llmv, + const char *name); +int lfsck_namespace_striped_dir_rescan(const struct lu_env *env, + struct lfsck_component *com, + struct lfsck_namespace_req *lnr); +int lfsck_namespace_handle_striped_master(const struct lu_env *env, + struct lfsck_component *com, + struct lfsck_namespace_req *lnr); + /* lfsck_layout.c */ int lfsck_layout_setup(const struct lu_env *env, struct lfsck_instance *lfsck); @@ -831,6 +1007,12 @@ extern const char *lfsck_flags_names[]; extern const char *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_obj2dt_dev(struct dt_object *obj) { return container_of0(obj->do_lu.lo_dev, struct dt_device, dd_lu_dev); @@ -988,27 +1170,16 @@ lfsck_object_find_by_dev_nowait(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; - struct dt_object *obj; conf->loc_flags = LOC_F_NOWAIT; - obj = lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, conf)); - if (unlikely(obj == NULL)) - return ERR_PTR(-ENOENT); - - return obj; + return lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, conf)); } static inline struct dt_object * lfsck_object_find_by_dev(const struct lu_env *env, struct dt_device *dev, const struct lu_fid *fid) { - struct dt_object *obj; - - obj = lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, NULL)); - if (unlikely(obj == NULL)) - return ERR_PTR(-ENOENT); - - return obj; + return lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, NULL)); } static inline struct dt_object *lfsck_object_find(const struct lu_env *env, @@ -1018,9 +1189,9 @@ static inline struct dt_object *lfsck_object_find(const struct lu_env *env, return lfsck_object_find_by_dev(env, lfsck->li_next, fid); } -static inline struct dt_object * -lfsck_object_find_bottom(const struct lu_env *env, struct lfsck_instance *lfsck, - const struct lu_fid *fid) +static inline struct dt_device * +lfsck_find_dev_by_fid(const struct lu_env *env, struct lfsck_instance *lfsck, + const struct lu_fid *fid) { struct dt_device *dev; int idx; @@ -1041,9 +1212,36 @@ lfsck_object_find_bottom(const struct lu_env *env, struct lfsck_instance *lfsck, dev = ltd->ltd_tgt; } + return dev; +} + +static inline struct dt_object * +lfsck_object_find_bottom(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(env, dev, fid); } +static inline struct dt_object * +lfsck_object_find_bottom_nowait(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_nowait(env, dev, fid); +} + static inline struct lfsck_tgt_desc *lfsck_tgt_get(struct lfsck_tgt_descs *ltds, __u32 index) { @@ -1074,6 +1272,15 @@ static inline void lfsck_component_put(const struct lu_env *env, struct lfsck_component *com) { if (atomic_dec_and_test(&com->lc_ref)) { + struct lfsck_sub_trace_obj *lsto; + int i; + + for (i = 0, lsto = &com->lc_sub_trace_objs[0]; + i < LFSCK_STF_COUNT; i++, lsto++) { + if (lsto->lsto_obj != NULL) + lu_object_put(env, &lsto->lsto_obj->do_lu); + } + if (com->lc_obj != NULL) lu_object_put_nocache(env, &com->lc_obj->do_lu); if (com->lc_file_ram != NULL) @@ -1154,4 +1361,36 @@ static inline int lfsck_links_read2(const struct lu_env *env, return __lfsck_links_read(env, obj, ldata); } +static inline struct lfsck_lmv *lfsck_lmv_get(struct lfsck_lmv *llmv) +{ + if (llmv != NULL) + atomic_inc(&llmv->ll_ref); + + return llmv; +} + +static inline int lfsck_sub_trace_file_fid2idx(const struct lu_fid *fid) +{ + return fid->f_oid & (LFSCK_STF_COUNT - 1); +} + +static inline void lfsck_lmv_header_le_to_cpu(struct lmv_mds_md_v1 *dst, + const struct lmv_mds_md_v1 *src) +{ + dst->lmv_magic = le32_to_cpu(src->lmv_magic); + dst->lmv_stripe_count = le32_to_cpu(src->lmv_stripe_count); + 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); +} + +static inline void lfsck_lmv_header_cpu_to_le(struct lmv_mds_md_v1 *dst, + const struct lmv_mds_md_v1 *src) +{ + dst->lmv_magic = cpu_to_le32(src->lmv_magic); + dst->lmv_stripe_count = cpu_to_le32(src->lmv_stripe_count); + 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); +} #endif /* _LFSCK_INTERNAL_H */