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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,
63 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
65 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
66 struct lu_fid *fid, struct md_op_data *op_data);
68 int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
69 const union lmv_mds_md *lmm, int stripe_count);
71 int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
72 struct lmv_stripe_md *lsm,
73 ldlm_blocking_callback cb_blocking,
74 int extra_lock_flags);
76 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
78 return container_of0(lmv, struct obd_device, u.lmv);
81 static inline struct lmv_tgt_desc *
82 lmv_get_target(struct lmv_obd *lmv, mdsno_t mdt_idx, int *index)
86 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
87 if (lmv->tgts[i] == NULL)
90 if (lmv->tgts[i]->ltd_idx == mdt_idx) {
97 return ERR_PTR(-ENODEV);
101 lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
103 struct lmv_tgt_desc *ltd;
107 if (lmv->desc.ld_tgt_count > 1) {
109 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
114 ltd = lmv_get_target(lmv, mdt_idx, &index);
121 static inline struct lmv_tgt_desc *
122 lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
126 index = lmv_find_target_index(lmv, fid);
128 return ERR_PTR(index);
130 return lmv->tgts[index];
133 static inline int lmv_stripe_md_size(int stripe_count)
135 struct lmv_stripe_md *lsm;
137 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
140 int lmv_name_to_stripe_index(enum lmv_hash_type hashtype,
141 unsigned int max_mdt_index,
142 const char *name, int namelen);
144 static inline const struct lmv_oinfo *
145 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
150 stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
151 lsm->lsm_md_stripe_count,
153 if (stripe_index < 0)
154 return ERR_PTR(stripe_index);
156 LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
157 "stripe_index = %d, stripe_count = %d hash_type = %x"
158 "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
159 lsm->lsm_md_hash_type, namelen, name);
161 return &lsm->lsm_md_oinfo[stripe_index];
164 static inline bool lmv_is_known_hash_type(const struct lmv_stripe_md *lsm)
166 return lsm->lsm_md_hash_type == LMV_HASH_TYPE_FNV_1A_64 ||
167 lsm->lsm_md_hash_type == LMV_HASH_TYPE_ALL_CHARS;
170 static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
172 return !lmv_is_known_hash_type(lsm) ||
173 lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
177 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
181 extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[];
183 extern struct file_operations lmv_proc_target_fops;