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26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
32 #ifndef _LMV_INTERNAL_H_
33 #define _LMV_INTERNAL_H_
36 #include <lustre_lmv.h>
38 #define LMV_MAX_TGT_COUNT 128
40 #define LL_IT2STR(it) \
41 ((it) ? ldlm_it2str((it)->it_op) : "0")
44 struct lu_batch *sbh_sub;
45 struct lmv_tgt_desc *sbh_tgt;
46 struct list_head sbh_sub_item;
50 struct lu_batch lbh_super;
51 struct ptlrpc_request_set *lbh_rqset;
52 struct list_head lbh_sub_batch_list;
55 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
56 struct lookup_intent *it, struct ptlrpc_request **reqp,
57 ldlm_blocking_callback cb_blocking,
58 __u64 extra_lock_flags);
60 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
62 int lmv_fld_lookup(struct lmv_obd *lmv, const 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_revalidate_slaves(struct obd_export *exp,
67 const struct lmv_stripe_md *lsm,
68 ldlm_blocking_callback cb_blocking,
69 int extra_lock_flags);
71 int lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
72 struct ptlrpc_request **preq);
73 void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt,
76 int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt);
78 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
80 return container_of_safe(lmv, struct obd_device, u.lmv);
83 static inline struct lu_tgt_desc *
84 lmv_tgt(struct lmv_obd *lmv, __u32 index)
86 return index < lmv->lmv_mdt_descs.ltd_tgts_size ?
87 LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL;
91 lmv_mdt0_inited(struct lmv_obd *lmv)
93 return lmv->lmv_mdt_descs.ltd_tgts_size > 0 &&
94 test_bit(0, lmv->lmv_mdt_descs.ltd_tgt_bitmap);
97 #define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt)
99 #define lmv_foreach_tgt_safe(lmv, tgt, tmp) \
100 ltd_foreach_tgt_safe(&(lmv)->lmv_mdt_descs, tgt, tmp)
103 struct lu_tgt_desc *lmv_first_connected_tgt(struct lmv_obd *lmv)
105 struct lu_tgt_desc *tgt;
107 tgt = ltd_first_tgt(&lmv->lmv_mdt_descs);
108 while (tgt && !tgt->ltd_exp)
109 tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
115 struct lu_tgt_desc *lmv_next_connected_tgt(struct lmv_obd *lmv,
116 struct lu_tgt_desc *tgt)
119 tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
120 } while (tgt && !tgt->ltd_exp);
125 #define lmv_foreach_connected_tgt(lmv, tgt) \
126 for (tgt = lmv_first_connected_tgt(lmv); tgt; \
127 tgt = lmv_next_connected_tgt(lmv, tgt))
130 lmv_fid2tgt_index(struct lmv_obd *lmv, const struct lu_fid *fid)
135 if (lmv->lmv_mdt_count < 2)
138 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
145 static inline struct lmv_tgt_desc *
146 lmv_fid2tgt(struct lmv_obd *lmv, const struct lu_fid *fid)
148 struct lu_tgt_desc *tgt;
151 index = lmv_fid2tgt_index(lmv, fid);
153 return ERR_PTR(index);
155 tgt = lmv_tgt(lmv, index);
157 return tgt ? tgt : ERR_PTR(-ENODEV);
160 static inline int lmv_stripe_md_size(int stripe_count)
162 struct lmv_stripe_md *lsm;
164 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
167 /* for file under migrating directory, return the target stripe info */
168 static inline const struct lmv_oinfo *
169 lsm_name_to_stripe_info(const struct lmv_stripe_object *lso, const char *name,
170 int namelen, bool new_layout)
172 const struct lmv_stripe_md *lsm;
175 LASSERT(lmv_dir_striped(lso));
178 stripe_index = __lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
179 lsm->lsm_md_stripe_count,
180 lsm->lsm_md_migrate_hash,
181 lsm->lsm_md_migrate_offset,
182 name, namelen, new_layout);
183 if (stripe_index < 0)
184 return ERR_PTR(stripe_index);
186 return &lsm->lsm_md_oinfo[stripe_index];
189 static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data)
191 const struct lmv_stripe_object *lso = op_data->op_lso1;
196 if (lmv_dir_layout_changing(lso) && !op_data->op_new_layout) {
197 op_data->op_new_layout = true;
201 if (lmv_dir_bad_hash(lso) &&
202 op_data->op_stripe_index < lso->lso_lsm.lsm_md_stripe_count - 1) {
203 op_data->op_stripe_index++;
210 struct lmv_tgt_desc *lmv_locate_tgt(struct lmv_obd *lmv,
211 struct md_op_data *op_data);
212 int lmv_old_layout_lookup(struct lmv_obd *lmv, struct md_op_data *op_data);
215 int lmv_tunables_init(struct obd_device *obd);