4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef LOV_INTERNAL_H
38 #define LOV_INTERNAL_H
40 #include <obd_class.h>
42 #include <lustre/lustre_user.h>
44 struct lov_lock_handles {
45 struct portals_handle llh_handle;
46 cfs_atomic_t llh_refcount;
48 struct lustre_handle llh_handles[0];
52 struct obd_info rq_oi;
53 struct lov_request_set *rq_rqset;
57 int rq_idx; /* index in lov->tgts array */
58 int rq_stripe; /* stripe number */
61 int rq_buflen; /* length of sub_md */
67 struct lov_request_set {
68 struct ldlm_enqueue_info *set_ei;
69 struct obd_info *set_oi;
70 cfs_atomic_t set_refcount;
71 struct obd_export *set_exp;
72 /* XXX: There is @set_exp already, however obd_statfs gets obd_device
74 struct obd_device *set_obd;
76 cfs_atomic_t set_completes;
77 cfs_atomic_t set_success;
78 cfs_atomic_t set_finish_checked;
79 struct llog_cookie *set_cookies;
81 struct obd_trans_info *set_oti;
83 struct brw_page *set_pga;
84 struct lov_lock_handles *set_lockh;
86 cfs_waitq_t set_waitq;
90 extern cfs_mem_cache_t *lov_oinfo_slab;
92 void lov_finish_set(struct lov_request_set *set);
94 static inline void lov_get_reqset(struct lov_request_set *set)
97 LASSERT(cfs_atomic_read(&set->set_refcount) > 0);
98 cfs_atomic_inc(&set->set_refcount);
101 static inline void lov_put_reqset(struct lov_request_set *set)
103 if (cfs_atomic_dec_and_test(&set->set_refcount))
107 static inline struct lov_lock_handles *
108 lov_handle2llh(struct lustre_handle *handle)
110 LASSERT(handle != NULL);
111 return(class_handle2object(handle->cookie));
114 static inline void lov_llh_put(struct lov_lock_handles *llh)
116 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
117 cfs_atomic_read(&llh->llh_refcount) - 1);
118 LASSERT(cfs_atomic_read(&llh->llh_refcount) > 0 &&
119 cfs_atomic_read(&llh->llh_refcount) < 0x5a5a);
120 if (cfs_atomic_dec_and_test(&llh->llh_refcount)) {
121 class_handle_unhash(&llh->llh_handle);
122 /* The structure may be held by other threads because RCU.
124 if (cfs_atomic_read(&llh->llh_refcount))
127 OBD_FREE_RCU(llh, sizeof *llh +
128 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
133 #define lov_uuid2str(lv, index) \
134 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
137 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
138 struct lov_stripe_md *lsm, int stripeno, int *set);
139 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
140 struct ost_lvb *lvb, int kms_only);
141 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
142 obd_off size, int shrink);
143 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
144 struct ost_lvb *lvb, __u64 *kms_place);
147 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
149 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
150 int stripeno, obd_off *obd_off);
151 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
153 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
154 obd_off start, obd_off end,
155 obd_off *obd_start, obd_off *obd_end);
156 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
159 #define LOV_USES_ASSIGNED_STRIPE 0
160 #define LOV_USES_DEFAULT_STRIPE 1
161 int qos_add_tgt(struct obd_device *obd, __u32 index);
162 int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
163 void qos_shrink_lsm(struct lov_request_set *set);
164 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
165 void qos_update(struct lov_obd *lov);
166 void qos_statfs_done(struct lov_obd *lov);
167 void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait);
168 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
171 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
172 int lov_set_finished(struct lov_request_set *set, int idempotent);
173 void lov_update_set(struct lov_request_set *set,
174 struct lov_request *req, int rc);
175 int lov_update_common_set(struct lov_request_set *set,
176 struct lov_request *req, int rc);
177 int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx);
178 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
179 struct lov_stripe_md **ea, struct obdo *src_oa,
180 struct obd_trans_info *oti,
181 struct lov_request_set **reqset);
182 int cb_create_update(void *cookie, int rc);
183 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
184 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
185 obd_count oa_bufs, struct brw_page *pga,
186 struct obd_trans_info *oti,
187 struct lov_request_set **reqset);
188 int lov_fini_brw_set(struct lov_request_set *set);
189 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
190 struct lov_request_set **reqset);
191 int lov_fini_getattr_set(struct lov_request_set *set);
192 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
193 struct obdo *src_oa, struct lov_stripe_md *lsm,
194 struct obd_trans_info *oti,
195 struct lov_request_set **reqset);
196 int lov_update_destroy_set(struct lov_request_set *set,
197 struct lov_request *req, int rc);
198 int lov_fini_destroy_set(struct lov_request_set *set);
199 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
200 struct obd_trans_info *oti,
201 struct lov_request_set **reqset);
202 int lov_update_setattr_set(struct lov_request_set *set,
203 struct lov_request *req, int rc);
204 int lov_fini_setattr_set(struct lov_request_set *set);
205 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
206 struct obd_trans_info *oti,
207 struct lov_request_set **reqset);
208 int lov_fini_punch_set(struct lov_request_set *set);
209 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
210 obd_off start, obd_off end,
211 struct lov_request_set **reqset);
212 int lov_fini_sync_set(struct lov_request_set *set);
213 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
214 struct ldlm_enqueue_info *einfo,
215 struct lov_request_set **reqset);
216 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
217 struct ptlrpc_request_set *rqset);
218 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
219 struct lov_stripe_md *lsm,
220 ldlm_policy_data_t *policy, __u32 mode,
221 struct lustre_handle *lockh,
222 struct lov_request_set **reqset);
223 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
224 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
225 struct lov_stripe_md *lsm,
226 __u32 mode, struct lustre_handle *lockh,
227 struct lov_request_set **reqset);
228 int lov_fini_cancel_set(struct lov_request_set *set);
229 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
230 struct lov_request_set **reqset);
231 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
233 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
235 int lov_fini_statfs_set(struct lov_request_set *set);
236 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
239 void lov_fix_desc(struct lov_desc *desc);
240 void lov_fix_desc_stripe_size(__u64 *val);
241 void lov_fix_desc_stripe_count(__u32 *val);
242 void lov_fix_desc_pattern(__u32 *val);
243 void lov_fix_desc_qos_maxage(__u32 *val);
244 __u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count);
245 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
246 struct obd_connect_data *data);
247 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
248 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
249 __u32 *indexp, int *genp);
250 int lov_del_target(struct obd_device *obd, __u32 index,
251 struct obd_uuid *uuidp, int gen);
253 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
254 struct obd_device *tgt, int *idx);
255 int lov_llog_finish(struct obd_device *obd, int count);
258 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
259 struct lov_stripe_md *lsm);
260 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
261 struct lov_mds_md *lmm, int lmm_bytes);
262 int lov_setstripe(struct obd_export *exp, int max_lmm_size,
263 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
264 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
265 struct lov_user_md *lump);
266 int lov_getstripe(struct obd_export *exp,
267 struct lov_stripe_md *lsm, struct lov_user_md *lump);
268 int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
269 int pattern, int magic);
270 int lov_free_memmd(struct lov_stripe_md **lsmp);
272 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
273 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
274 void lov_dump_lmm(int level, void *lmm);
277 struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size);
278 void lsm_free_plain(struct lov_stripe_md *lsm);
280 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
281 struct obdo *oa, void *data);
283 extern struct file_operations lov_proc_target_fops;
285 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
287 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
289 memset(lvars, 0, sizeof(*lvars));
294 extern struct lu_device_type lov_device_type;
297 extern cfs_hash_ops_t pool_hash_operations;
298 /* ost_pool methods */
299 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
300 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
301 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
302 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
303 int lov_ost_pool_free(struct ost_pool *op);
305 /* high level pool methods */
306 int lov_pool_new(struct obd_device *obd, char *poolname);
307 int lov_pool_del(struct obd_device *obd, char *poolname);
308 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
309 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
310 void lov_dump_pool(int level, struct pool_desc *pool);
311 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
312 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
313 void lov_pool_putref(struct pool_desc *pool);
315 static inline struct lov_stripe_md *lsm_addref(struct lov_stripe_md *lsm)
317 LASSERT(cfs_atomic_read(&lsm->lsm_refc) > 0);
318 cfs_atomic_inc(&lsm->lsm_refc);