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, 2012, Whamcloud, Inc.
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 struct llog_cookie *set_cookies;
80 struct obd_trans_info *set_oti;
82 struct brw_page *set_pga;
83 struct lov_lock_handles *set_lockh;
85 cfs_waitq_t set_waitq;
86 cfs_spinlock_t set_lock;
89 extern cfs_mem_cache_t *lov_oinfo_slab;
91 static inline void lov_llh_addref(void *llhp)
93 struct lov_lock_handles *llh = llhp;
94 cfs_atomic_inc(&llh->llh_refcount);
95 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
96 cfs_atomic_read(&llh->llh_refcount));
99 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
101 struct lov_lock_handles *llh;
103 OBD_ALLOC(llh, sizeof *llh +
104 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
107 cfs_atomic_set(&llh->llh_refcount, 2);
108 llh->llh_stripe_count = lsm->lsm_stripe_count;
109 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
110 class_handle_hash(&llh->llh_handle, lov_llh_addref);
114 void lov_finish_set(struct lov_request_set *set);
116 static inline void lov_get_reqset(struct lov_request_set *set)
118 LASSERT(set != NULL);
119 LASSERT(cfs_atomic_read(&set->set_refcount) > 0);
120 cfs_atomic_inc(&set->set_refcount);
123 static inline void lov_put_reqset(struct lov_request_set *set)
125 if (cfs_atomic_dec_and_test(&set->set_refcount))
129 static inline struct lov_lock_handles *
130 lov_handle2llh(struct lustre_handle *handle)
132 LASSERT(handle != NULL);
133 return(class_handle2object(handle->cookie));
136 static inline void lov_llh_put(struct lov_lock_handles *llh)
138 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
139 cfs_atomic_read(&llh->llh_refcount) - 1);
140 LASSERT(cfs_atomic_read(&llh->llh_refcount) > 0 &&
141 cfs_atomic_read(&llh->llh_refcount) < 0x5a5a);
142 if (cfs_atomic_dec_and_test(&llh->llh_refcount)) {
143 class_handle_unhash(&llh->llh_handle);
144 /* The structure may be held by other threads because RCU.
146 if (cfs_atomic_read(&llh->llh_refcount))
149 OBD_FREE_RCU(llh, sizeof *llh +
150 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
155 #define lov_uuid2str(lv, index) \
156 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
159 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
160 struct lov_stripe_md *lsm, int stripeno, int *set);
161 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
162 struct ost_lvb *lvb, int kms_only);
163 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
164 obd_off size, int shrink);
165 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
166 struct ost_lvb *lvb, __u64 *kms_place);
169 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
171 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
172 int stripeno, obd_off *obd_off);
173 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
175 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
176 obd_off start, obd_off end,
177 obd_off *obd_start, obd_off *obd_end);
178 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
181 #define LOV_USES_ASSIGNED_STRIPE 0
182 #define LOV_USES_DEFAULT_STRIPE 1
183 int qos_add_tgt(struct obd_device *obd, __u32 index);
184 int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
185 void qos_shrink_lsm(struct lov_request_set *set);
186 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
187 void qos_update(struct lov_obd *lov);
188 void qos_statfs_done(struct lov_obd *lov);
189 void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait);
190 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
193 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
194 int lov_finished_set(struct lov_request_set *set);
195 void lov_update_set(struct lov_request_set *set,
196 struct lov_request *req, int rc);
197 int lov_update_common_set(struct lov_request_set *set,
198 struct lov_request *req, int rc);
199 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
200 struct lov_stripe_md **ea, struct obdo *src_oa,
201 struct obd_trans_info *oti,
202 struct lov_request_set **reqset);
203 int cb_create_update(void *cookie, int rc);
204 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
205 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
206 obd_count oa_bufs, struct brw_page *pga,
207 struct obd_trans_info *oti,
208 struct lov_request_set **reqset);
209 int lov_fini_brw_set(struct lov_request_set *set);
210 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
211 struct lov_request_set **reqset);
212 int lov_fini_getattr_set(struct lov_request_set *set);
213 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
214 struct obdo *src_oa, struct lov_stripe_md *lsm,
215 struct obd_trans_info *oti,
216 struct lov_request_set **reqset);
217 int lov_update_destroy_set(struct lov_request_set *set,
218 struct lov_request *req, int rc);
219 int lov_fini_destroy_set(struct lov_request_set *set);
220 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
221 struct obd_trans_info *oti,
222 struct lov_request_set **reqset);
223 int lov_update_setattr_set(struct lov_request_set *set,
224 struct lov_request *req, int rc);
225 int lov_fini_setattr_set(struct lov_request_set *set);
226 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
227 struct obd_trans_info *oti,
228 struct lov_request_set **reqset);
229 int lov_fini_punch_set(struct lov_request_set *set);
230 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
231 obd_off start, obd_off end,
232 struct lov_request_set **reqset);
233 int lov_fini_sync_set(struct lov_request_set *set);
234 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
235 struct ldlm_enqueue_info *einfo,
236 struct lov_request_set **reqset);
237 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
238 struct ptlrpc_request_set *rqset);
239 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
240 struct lov_stripe_md *lsm,
241 ldlm_policy_data_t *policy, __u32 mode,
242 struct lustre_handle *lockh,
243 struct lov_request_set **reqset);
244 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
245 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
246 struct lov_stripe_md *lsm,
247 __u32 mode, struct lustre_handle *lockh,
248 struct lov_request_set **reqset);
249 int lov_fini_cancel_set(struct lov_request_set *set);
250 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
251 struct lov_request_set **reqset);
252 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
254 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
256 int lov_fini_statfs_set(struct lov_request_set *set);
257 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
260 void lov_fix_desc(struct lov_desc *desc);
261 void lov_fix_desc_stripe_size(__u64 *val);
262 void lov_fix_desc_stripe_count(__u32 *val);
263 void lov_fix_desc_pattern(__u32 *val);
264 void lov_fix_desc_qos_maxage(__u32 *val);
265 __u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count);
266 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
267 struct obd_connect_data *data);
268 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
269 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
270 __u32 *indexp, int *genp);
271 int lov_del_target(struct obd_device *obd, __u32 index,
272 struct obd_uuid *uuidp, int gen);
274 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
275 struct obd_device *tgt, int *idx);
276 int lov_llog_finish(struct obd_device *obd, int count);
279 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
280 struct lov_stripe_md *lsm);
281 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
282 struct lov_mds_md *lmm, int lmm_bytes);
283 int lov_setstripe(struct obd_export *exp, int max_lmm_size,
284 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
285 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
286 struct lov_user_md *lump);
287 int lov_getstripe(struct obd_export *exp,
288 struct lov_stripe_md *lsm, struct lov_user_md *lump);
289 int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
290 int pattern, int magic);
291 void lov_free_memmd(struct lov_stripe_md **lsmp);
293 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
294 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
295 void lov_dump_lmm(int level, void *lmm);
298 struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size);
299 void lsm_free_plain(struct lov_stripe_md *lsm);
301 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
302 struct obdo *oa, void *data);
304 extern struct file_operations lov_proc_target_fops;
306 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
308 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
310 memset(lvars, 0, sizeof(*lvars));
315 extern struct lu_device_type lov_device_type;
318 extern cfs_hash_ops_t pool_hash_operations;
319 /* ost_pool methods */
320 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
321 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
322 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
323 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
324 int lov_ost_pool_free(struct ost_pool *op);
326 /* high level pool methods */
327 int lov_pool_new(struct obd_device *obd, char *poolname);
328 int lov_pool_del(struct obd_device *obd, char *poolname);
329 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
330 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
331 void lov_dump_pool(int level, struct pool_desc *pool);
332 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
333 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
334 void lov_pool_putref(struct pool_desc *pool);