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14 * in the LICENSE file that accompanied this code).
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23 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
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26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
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33 #ifndef _LMV_INTERNAL_H_
34 #define _LMV_INTERNAL_H_
37 #include <lustre_lmv.h>
39 #define LMV_MAX_TGT_COUNT 128
41 #define LL_IT2STR(it) \
42 ((it) ? ldlm_it2str((it)->it_op) : "0")
44 int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
45 struct lookup_intent *it, struct ptlrpc_request **reqp,
46 ldlm_blocking_callback cb_blocking,
47 __u64 extra_lock_flags);
49 int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
51 int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
52 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
53 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
54 struct lu_fid *fid, struct md_op_data *op_data);
56 int lmv_revalidate_slaves(struct obd_export *exp,
57 const struct lmv_stripe_md *lsm,
58 ldlm_blocking_callback cb_blocking,
59 int extra_lock_flags);
61 int lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
62 struct ptlrpc_request **preq);
63 void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt,
66 int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt);
68 static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
70 return container_of0(lmv, struct obd_device, u.lmv);
73 static inline struct lu_tgt_desc *
74 lmv_tgt(struct lmv_obd *lmv, __u32 index)
76 return index < lmv->lmv_mdt_descs.ltd_tgt_bitmap->size ?
77 LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL;
81 lmv_mdt0_inited(struct lmv_obd *lmv)
83 return lmv->lmv_mdt_descs.ltd_tgt_bitmap->size > 0 &&
84 cfs_bitmap_check(lmv->lmv_mdt_descs.ltd_tgt_bitmap, 0);
87 #define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt)
89 #define lmv_foreach_tgt_safe(lmv, tgt, tmp) \
90 ltd_foreach_tgt_safe(&(lmv)->lmv_mdt_descs, tgt, tmp)
93 struct lu_tgt_desc *lmv_first_connected_tgt(struct lmv_obd *lmv)
95 struct lu_tgt_desc *tgt;
97 tgt = ltd_first_tgt(&lmv->lmv_mdt_descs);
98 while (tgt && !tgt->ltd_exp)
99 tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
105 struct lu_tgt_desc *lmv_next_connected_tgt(struct lmv_obd *lmv,
106 struct lu_tgt_desc *tgt)
109 tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
110 } while (tgt && !tgt->ltd_exp);
115 #define lmv_foreach_connected_tgt(lmv, tgt) \
116 for (tgt = lmv_first_connected_tgt(lmv); tgt; \
117 tgt = lmv_next_connected_tgt(lmv, tgt))
120 lmv_fid2tgt_index(struct lmv_obd *lmv, const struct lu_fid *fid)
125 if (lmv->lmv_mdt_count < 2)
128 rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
135 static inline struct lmv_tgt_desc *
136 lmv_fid2tgt(struct lmv_obd *lmv, const struct lu_fid *fid)
138 struct lu_tgt_desc *tgt;
141 index = lmv_fid2tgt_index(lmv, fid);
143 return ERR_PTR(index);
145 tgt = lmv_tgt(lmv, index);
147 return tgt ? tgt : ERR_PTR(-ENODEV);
150 static inline int lmv_stripe_md_size(int stripe_count)
152 struct lmv_stripe_md *lsm;
154 return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
157 /* for file under migrating directory, return the target stripe info */
158 static inline const struct lmv_oinfo *
159 lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
160 int namelen, bool post_migrate)
162 __u32 hash_type = lsm->lsm_md_hash_type;
163 __u32 stripe_count = lsm->lsm_md_stripe_count;
166 LASSERT(lmv_dir_striped(lsm));
168 if (hash_type & LMV_HASH_FLAG_MIGRATION) {
170 hash_type &= ~LMV_HASH_FLAG_MIGRATION;
171 stripe_count = lsm->lsm_md_migrate_offset;
173 hash_type = lsm->lsm_md_migrate_hash;
174 stripe_count -= lsm->lsm_md_migrate_offset;
178 stripe_index = lmv_name_to_stripe_index(hash_type, stripe_count,
180 if (stripe_index < 0)
181 return ERR_PTR(stripe_index);
183 if ((lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION) && !post_migrate)
184 stripe_index += lsm->lsm_md_migrate_offset;
186 if (stripe_index >= lsm->lsm_md_stripe_count) {
187 CERROR("stripe_index %d stripe_count %d hash_type %#x "
188 "migrate_offset %d migrate_hash %#x name %.*s\n",
189 stripe_index, lsm->lsm_md_stripe_count,
190 lsm->lsm_md_hash_type, lsm->lsm_md_migrate_offset,
191 lsm->lsm_md_migrate_hash, namelen, name);
192 return ERR_PTR(-EBADF);
195 return &lsm->lsm_md_oinfo[stripe_index];
198 static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data)
200 const struct lmv_stripe_md *lsm = op_data->op_mea1;
205 if (lmv_dir_migrating(lsm) && !op_data->op_post_migrate) {
206 op_data->op_post_migrate = true;
210 if (lmv_dir_bad_hash(lsm) &&
211 op_data->op_stripe_index < lsm->lsm_md_stripe_count - 1) {
212 op_data->op_stripe_index++;
219 struct lmv_tgt_desc *lmv_locate_tgt(struct lmv_obd *lmv,
220 struct md_op_data *op_data);
223 int lmv_tunables_init(struct obd_device *obd);