int lmv_check_connect(struct obd_device *obd);
int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
- void *lmm, int lmmsize, struct lookup_intent *it,
- int flags, struct ptlrpc_request **reqp,
- ldlm_blocking_callback cb_blocking,
- __u64 extra_lock_flags);
-
-int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
- void *lmm, int lmmsize, struct lookup_intent *it,
- int flags, struct ptlrpc_request **reqp,
- ldlm_blocking_callback cb_blocking,
- __u64 extra_lock_flags);
-
-int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
- void *lmm, int lmmsize, struct lookup_intent *it,
- int flags, struct ptlrpc_request **reqp,
- ldlm_blocking_callback cb_blocking,
+ struct lookup_intent *it, struct ptlrpc_request **reqp,
+ ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags);
int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
mdsno_t *mds);
int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
mdsno_t mds);
-int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
- struct md_op_data *op_data);
+int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
+ struct lu_fid *fid, struct md_op_data *op_data);
+
+int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
+ const union lmv_mds_md *lmm, int stripe_count);
+
+int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
+ struct lmv_stripe_md *lsm,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
+
+static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
+{
+ return container_of0(lmv, struct obd_device, u.lmv);
+}
static inline struct lmv_tgt_desc *
-lmv_get_target(struct lmv_obd *lmv, mdsno_t mds)
+lmv_get_target(struct lmv_obd *lmv, mdsno_t mdt_idx, int *index)
{
- int count = lmv->desc.ld_tgt_count;
int i;
- for (i = 0; i < count; i++) {
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
if (lmv->tgts[i] == NULL)
continue;
- if (lmv->tgts[i]->ltd_idx == mds)
+ if (lmv->tgts[i]->ltd_idx == mdt_idx) {
+ if (index != NULL)
+ *index = i;
return lmv->tgts[i];
+ }
}
return ERR_PTR(-ENODEV);
}
-static inline struct lmv_tgt_desc *
-lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
+static inline int
+lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- mdsno_t mds = 0;
- int rc;
+ struct lmv_tgt_desc *ltd;
+ mdsno_t mdt_idx = 0;
+ int index = 0;
+
+ if (lmv->desc.ld_tgt_count > 1) {
+ int rc;
+ rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
+ if (rc < 0)
+ return rc;
+ }
- if (lmv->desc.ld_tgt_count > 1) {
- rc = lmv_fld_lookup(lmv, fid, &mds);
- if (rc)
- return ERR_PTR(rc);
- }
+ ltd = lmv_get_target(lmv, mdt_idx, &index);
+ if (IS_ERR(ltd))
+ return PTR_ERR(ltd);
- return lmv_get_target(lmv, mds);
+ return index;
}
-static inline unsigned int
-mea_last_char_hash(unsigned int count, const char *name, int namelen)
+static inline struct lmv_tgt_desc *
+lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- unsigned int c;
+ int index;
- c = name[namelen - 1];
- if (c == 0)
- CWARN("invalid name %.*s\n", namelen, name);
+ index = lmv_find_target_index(lmv, fid);
+ if (index < 0)
+ return ERR_PTR(index);
- c = c % count;
+ return lmv->tgts[index];
+}
- return c;
+static inline int lmv_stripe_md_size(int stripe_count)
+{
+ struct lmv_stripe_md *lsm;
+
+ return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
}
-static inline unsigned int
-mea_all_chars_hash(unsigned int count, const char *name, int namelen)
+int lmv_name_to_stripe_index(enum lmv_hash_type hashtype,
+ unsigned int max_mdt_index,
+ const char *name, int namelen);
+
+static inline const struct lmv_oinfo *
+lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
+ int namelen)
{
- unsigned int c = 0;
+ int stripe_index;
- while (--namelen >= 0)
- c += name[namelen];
+ stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
+ lsm->lsm_md_stripe_count,
+ name, namelen);
+ if (stripe_index < 0)
+ return ERR_PTR(stripe_index);
- c = c % count;
+ LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
+ "stripe_index = %d, stripe_count = %d hash_type = %x"
+ "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
+ lsm->lsm_md_hash_type, namelen, name);
- return c;
+ return &lsm->lsm_md_oinfo[stripe_index];
}
-static inline int lmv_stripe_md_size(int stripe_count)
+static inline bool lmv_is_known_hash_type(const struct lmv_stripe_md *lsm)
{
- struct lmv_stripe_md *lsm;
-
- return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
+ return lsm->lsm_md_hash_type == LMV_HASH_TYPE_FNV_1A_64 ||
+ lsm->lsm_md_hash_type == LMV_HASH_TYPE_ALL_CHARS;
}
-int raw_name2idx(int hashtype, int count, const char *name, int namelen);
+static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
+{
+ return !lmv_is_known_hash_type(lsm) ||
+ lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
+}
struct lmv_tgt_desc
*lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,