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37 #ifndef _LMV_INTERNAL_H_
38 #define _LMV_INTERNAL_H_
40 #include <lustre/lustre_idl.h>
42 #include <lustre_lmv.h>
44 #define LMV_MAX_TGT_COUNT 128
46 #define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex);
47 #define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex);
49 #define LL_IT2STR(it) \
50 ((it) ? ldlm_it2str((it)->it_op) : "0")
52 int lmv_check_connect(struct obd_device *obd);
54 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
55 struct lookup_intent *it, struct ptlrpc_request **reqp,
56 ldlm_blocking_callback cb_blocking,
57 __u64 extra_lock_flags);
59 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
61 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
62 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
63 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
64 struct lu_fid *fid, struct md_op_data *op_data);
66 int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
67 const union lmv_mds_md *lmm, int stripe_count);
69 int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
70 struct lmv_stripe_md *lsm,
71 ldlm_blocking_callback cb_blocking,
72 int extra_lock_flags);
74 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
76 return container_of0(lmv, struct obd_device, u.lmv);
79 static inline struct lmv_tgt_desc *
80 lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index)
84 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
85 if (lmv->tgts[i] == NULL)
88 if (lmv->tgts[i]->ltd_idx == mdt_idx) {
95 return ERR_PTR(-ENODEV);
99 lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
101 struct lmv_tgt_desc *ltd;
105 if (lmv->desc.ld_tgt_count > 1) {
107 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
112 ltd = lmv_get_target(lmv, mdt_idx, &index);
119 static inline struct lmv_tgt_desc *
120 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
124 index = lmv_find_target_index(lmv, fid);
126 return ERR_PTR(index);
128 return lmv->tgts[index];
131 static inline int lmv_stripe_md_size(int stripe_count)
133 struct lmv_stripe_md *lsm;
135 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
138 int lmv_name_to_stripe_index(enum lmv_hash_type hashtype,
139 unsigned int max_mdt_index,
140 const char *name, int namelen);
142 static inline const struct lmv_oinfo *
143 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
148 stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
149 lsm->lsm_md_stripe_count,
151 if (stripe_index < 0)
152 return ERR_PTR(stripe_index);
154 LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
155 "stripe_index = %d, stripe_count = %d hash_type = %x"
156 "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
157 lsm->lsm_md_hash_type, namelen, name);
159 return &lsm->lsm_md_oinfo[stripe_index];
162 static inline bool lmv_is_known_hash_type(const struct lmv_stripe_md *lsm)
164 return lsm->lsm_md_hash_type == LMV_HASH_TYPE_FNV_1A_64 ||
165 lsm->lsm_md_hash_type == LMV_HASH_TYPE_ALL_CHARS;
168 static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
170 return !lmv_is_known_hash_type(lsm) ||
171 lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
175 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
179 extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[];
181 extern struct file_operations lmv_proc_target_fops;