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 #define pool_tgt_size(p) ((p)->pool_obds.op_size)
45 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
46 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
47 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
50 char pool_name[LOV_MAXPOOLNAME + 1];
51 struct ost_pool pool_obds;
52 atomic_t pool_refcount;
53 cfs_hlist_node_t pool_hash; /* access by poolname */
54 struct list_head pool_list; /* serial access */
55 struct proc_dir_entry *pool_proc_entry;
56 struct obd_device *pool_lobd; /* owner */
59 struct lov_lock_handles {
60 struct portals_handle llh_handle;
61 cfs_atomic_t llh_refcount;
63 struct lustre_handle llh_handles[0];
67 struct obd_info rq_oi;
68 struct lov_request_set *rq_rqset;
72 int rq_idx; /* index in lov->tgts array */
73 int rq_stripe; /* stripe number */
76 int rq_buflen; /* length of sub_md */
82 struct lov_request_set {
83 struct ldlm_enqueue_info *set_ei;
84 struct obd_info *set_oi;
85 cfs_atomic_t set_refcount;
86 struct obd_export *set_exp;
87 /* XXX: There is @set_exp already, however obd_statfs gets obd_device
89 struct obd_device *set_obd;
91 cfs_atomic_t set_completes;
92 cfs_atomic_t set_success;
93 cfs_atomic_t set_finish_checked;
94 struct llog_cookie *set_cookies;
96 struct obd_trans_info *set_oti;
98 struct brw_page *set_pga;
99 struct lov_lock_handles *set_lockh;
101 wait_queue_head_t set_waitq;
105 extern struct kmem_cache *lov_oinfo_slab;
107 void lov_finish_set(struct lov_request_set *set);
109 static inline void lov_get_reqset(struct lov_request_set *set)
111 LASSERT(set != NULL);
112 LASSERT(cfs_atomic_read(&set->set_refcount) > 0);
113 cfs_atomic_inc(&set->set_refcount);
116 static inline void lov_put_reqset(struct lov_request_set *set)
118 if (cfs_atomic_dec_and_test(&set->set_refcount))
122 static inline struct lov_lock_handles *
123 lov_handle2llh(const struct lustre_handle *handle)
125 LASSERT(handle != NULL);
126 return class_handle2object(handle->cookie, NULL);
129 static inline void lov_llh_put(struct lov_lock_handles *llh)
131 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
132 cfs_atomic_read(&llh->llh_refcount) - 1);
133 LASSERT(cfs_atomic_read(&llh->llh_refcount) > 0 &&
134 cfs_atomic_read(&llh->llh_refcount) < 0x5a5a);
135 if (cfs_atomic_dec_and_test(&llh->llh_refcount)) {
136 class_handle_unhash(&llh->llh_handle);
137 /* The structure may be held by other threads because RCU.
139 if (cfs_atomic_read(&llh->llh_refcount))
142 OBD_FREE_RCU(llh, sizeof *llh +
143 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
148 #define lov_uuid2str(lv, index) \
149 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
152 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
153 struct lov_stripe_md *lsm, int stripeno, int *set);
154 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
155 struct ost_lvb *lvb, int kms_only);
156 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
157 obd_off size, int shrink);
158 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
159 struct ost_lvb *lvb, __u64 *kms_place);
162 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
164 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
165 int stripeno, obd_off *obd_off);
166 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
168 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
169 obd_off start, obd_off end,
170 obd_off *obd_start, obd_off *obd_end);
171 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
174 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
175 int lov_set_finished(struct lov_request_set *set, int idempotent);
176 void lov_update_set(struct lov_request_set *set,
177 struct lov_request *req, int rc);
178 int lov_update_common_set(struct lov_request_set *set,
179 struct lov_request *req, int rc);
180 int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx);
181 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
182 struct lov_stripe_md **ea, struct obdo *src_oa,
183 struct obd_trans_info *oti,
184 struct lov_request_set **reqset);
185 int cb_create_update(void *cookie, int rc);
186 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
187 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
188 obd_count oa_bufs, struct brw_page *pga,
189 struct obd_trans_info *oti,
190 struct lov_request_set **reqset);
191 int lov_fini_brw_set(struct lov_request_set *set);
192 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
193 struct lov_request_set **reqset);
194 int lov_fini_getattr_set(struct lov_request_set *set);
195 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
196 struct obdo *src_oa, struct lov_stripe_md *lsm,
197 struct obd_trans_info *oti,
198 struct lov_request_set **reqset);
199 int lov_update_destroy_set(struct lov_request_set *set,
200 struct lov_request *req, int rc);
201 int lov_fini_destroy_set(struct lov_request_set *set);
202 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
203 struct obd_trans_info *oti,
204 struct lov_request_set **reqset);
205 int lov_update_setattr_set(struct lov_request_set *set,
206 struct lov_request *req, int rc);
207 int lov_fini_setattr_set(struct lov_request_set *set);
208 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
209 struct obd_trans_info *oti,
210 struct lov_request_set **reqset);
211 int lov_fini_punch_set(struct lov_request_set *set);
212 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
213 obd_off start, obd_off end,
214 struct lov_request_set **reqset);
215 int lov_fini_sync_set(struct lov_request_set *set);
216 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
217 struct ldlm_enqueue_info *einfo,
218 struct lov_request_set **reqset);
219 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
220 struct ptlrpc_request_set *rqset);
221 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
222 struct lov_stripe_md *lsm,
223 ldlm_policy_data_t *policy, __u32 mode,
224 struct lustre_handle *lockh,
225 struct lov_request_set **reqset);
226 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, __u64 flags);
227 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
228 struct lov_stripe_md *lsm,
229 __u32 mode, struct lustre_handle *lockh,
230 struct lov_request_set **reqset);
231 int lov_fini_cancel_set(struct lov_request_set *set);
232 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
233 struct lov_request_set **reqset);
234 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
236 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
238 int lov_fini_statfs_set(struct lov_request_set *set);
239 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
242 void lov_stripe_lock(struct lov_stripe_md *md);
243 void lov_stripe_unlock(struct lov_stripe_md *md);
244 void lov_fix_desc(struct lov_desc *desc);
245 void lov_fix_desc_stripe_size(__u64 *val);
246 void lov_fix_desc_stripe_count(__u32 *val);
247 void lov_fix_desc_pattern(__u32 *val);
248 void lov_fix_desc_qos_maxage(__u32 *val);
249 __u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count);
250 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
251 struct obd_connect_data *data);
252 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
253 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
254 __u32 *indexp, int *genp);
255 int lov_del_target(struct obd_device *obd, __u32 index,
256 struct obd_uuid *uuidp, int gen);
259 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
260 struct lov_stripe_md *lsm);
261 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
262 struct lov_mds_md *lmm, int lmm_bytes);
263 int lov_setstripe(struct obd_export *exp, int max_lmm_size,
264 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
265 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
266 struct lov_user_md *lump);
267 int lov_getstripe(struct obd_export *exp,
268 struct lov_stripe_md *lsm, struct lov_user_md *lump);
269 int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
270 int pattern, int magic);
271 int lov_free_memmd(struct lov_stripe_md **lsmp);
273 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
274 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
275 void lov_dump_lmm_common(int level, void *lmmp);
276 void lov_dump_lmm(int level, void *lmm);
279 struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size);
280 void lsm_free_plain(struct lov_stripe_md *lsm);
282 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
283 struct obdo *oa, void *data);
285 extern struct file_operations lov_proc_target_fops;
287 extern struct lprocfs_seq_vars lprocfs_lov_obd_vars[];
291 extern struct lu_device_type lov_device_type;
294 extern cfs_hash_ops_t pool_hash_operations;
295 /* ost_pool methods */
296 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
297 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
298 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
299 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
300 int lov_ost_pool_free(struct ost_pool *op);
302 /* high level pool methods */
303 int lov_pool_new(struct obd_device *obd, char *poolname);
304 int lov_pool_del(struct obd_device *obd, char *poolname);
305 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
306 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
307 void lov_dump_pool(int level, struct pool_desc *pool);
308 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
309 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
310 void lov_pool_putref(struct pool_desc *pool);
312 static inline struct lov_stripe_md *lsm_addref(struct lov_stripe_md *lsm)
314 LASSERT(cfs_atomic_read(&lsm->lsm_refc) > 0);
315 cfs_atomic_inc(&lsm->lsm_refc);