1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
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 <lustre/lustre_user.h>
42 struct lov_lock_handles {
43 struct portals_handle llh_handle;
44 atomic_t llh_refcount;
46 struct lustre_handle llh_handles[0];
50 struct obd_info rq_oi;
51 struct lov_request_set *rq_rqset;
53 struct list_head rq_link;
55 int rq_idx; /* index in lov->tgts array */
56 int rq_stripe; /* stripe number */
59 int rq_buflen; /* length of sub_md */
65 struct lov_request_set {
66 struct ldlm_enqueue_info*set_ei;
67 struct obd_info *set_oi;
68 atomic_t set_refcount;
69 struct obd_export *set_exp;
70 /* XXX: There is @set_exp already, however obd_statfs gets obd_device
72 struct obd_device *set_obd;
76 struct llog_cookie *set_cookies;
78 struct obd_trans_info *set_oti;
80 struct brw_page *set_pga;
81 struct lov_lock_handles *set_lockh;
82 struct list_head set_list;
85 extern cfs_mem_cache_t *lov_oinfo_slab;
87 static inline void lov_llh_addref(void *llhp)
89 struct lov_lock_handles *llh = llhp;
90 atomic_inc(&llh->llh_refcount);
91 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
92 atomic_read(&llh->llh_refcount));
95 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
97 struct lov_lock_handles *llh;
99 OBD_ALLOC(llh, sizeof *llh +
100 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
103 atomic_set(&llh->llh_refcount, 2);
104 llh->llh_stripe_count = lsm->lsm_stripe_count;
105 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
106 class_handle_hash(&llh->llh_handle, lov_llh_addref);
110 static inline struct lov_lock_handles *
111 lov_handle2llh(struct lustre_handle *handle)
113 LASSERT(handle != NULL);
114 return(class_handle2object(handle->cookie));
117 static inline void lov_llh_put(struct lov_lock_handles *llh)
119 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
120 atomic_read(&llh->llh_refcount) - 1);
121 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
122 atomic_read(&llh->llh_refcount) < 0x5a5a);
123 if (atomic_dec_and_test(&llh->llh_refcount)) {
124 class_handle_unhash(&llh->llh_handle);
125 /* The structure may be held by other threads because RCU.
127 if (atomic_read(&llh->llh_refcount))
130 OBD_FREE_RCU(llh, sizeof *llh +
131 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
136 #define lov_uuid2str(lv, index) \
137 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
140 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
141 struct lov_stripe_md *lsm, int stripeno, int *set);
142 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
143 struct ost_lvb *lvb, int kms_only);
144 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
145 obd_off size, int shrink);
146 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
147 struct ost_lvb *lvb, __u64 *kms_place);
150 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
152 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
153 int stripeno, obd_off *obd_off);
154 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
156 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
157 obd_off start, obd_off end,
158 obd_off *obd_start, obd_off *obd_end);
159 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
162 #define LOV_USES_ASSIGNED_STRIPE 0
163 #define LOV_USES_DEFAULT_STRIPE 1
164 int qos_add_tgt(struct obd_device *obd, __u32 index);
165 int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
166 void qos_shrink_lsm(struct lov_request_set *set);
167 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
168 void qos_update(struct lov_obd *lov);
169 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
172 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
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_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
178 struct lov_stripe_md **ea, struct obdo *src_oa,
179 struct obd_trans_info *oti,
180 struct lov_request_set **reqset);
181 int lov_update_create_set(struct lov_request_set *set,
182 struct lov_request *req, 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,
211 struct lov_stripe_md *lsm, obd_off start,
212 obd_off end, struct lov_request_set **reqset);
213 int lov_fini_sync_set(struct lov_request_set *set);
214 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
215 struct ldlm_enqueue_info *einfo,
216 struct lov_request_set **reqset);
217 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
218 struct ptlrpc_request_set *rqset);
219 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
220 struct lov_stripe_md *lsm,
221 ldlm_policy_data_t *policy, __u32 mode,
222 struct lustre_handle *lockh,
223 struct lov_request_set **reqset);
224 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
226 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int 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);
241 void lov_fix_desc(struct lov_desc *desc);
242 void lov_fix_desc_stripe_size(__u64 *val);
243 void lov_fix_desc_stripe_count(__u32 *val);
244 void lov_fix_desc_pattern(__u32 *val);
245 void lov_fix_desc_qos_maxage(__u32 *val);
246 int lov_get_stripecnt(struct lov_obd *lov, __u32 stripe_count);
247 void lov_getref(struct obd_device *obd);
248 void lov_putref(struct obd_device *obd);
249 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
250 struct obd_connect_data *data);
251 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
252 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
253 __u32 *indexp, int *genp);
254 int lov_del_target(struct obd_device *obd, __u32 index,
255 struct obd_uuid *uuidp, int gen);
257 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
258 struct obd_device *tgt, int count, struct llog_catid *logid,
259 struct obd_uuid *uuid);
260 int lov_llog_finish(struct obd_device *obd, int count);
263 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
264 struct lov_stripe_md *lsm);
265 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
266 struct lov_mds_md *lmm, int lmm_bytes);
267 int lov_setstripe(struct obd_export *exp,
268 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
269 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
270 struct lov_user_md *lump);
271 int lov_getstripe(struct obd_export *exp,
272 struct lov_stripe_md *lsm, struct lov_user_md *lump);
273 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count,
274 int pattern, int magic);
275 void lov_free_memmd(struct lov_stripe_md **lsmp);
277 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
278 void lov_dump_lmm_join(int level, struct lov_mds_md_join *lmmj);
279 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
280 void lov_dump_lmm(int level, void *lmm);
283 int lov_unpackmd_join(struct lov_obd *lov, struct lov_stripe_md *lsm,
284 struct lov_mds_md *lmm);
285 struct lov_stripe_md *lsm_alloc_plain(int stripe_count, int *size);
286 void lsm_free_plain(struct lov_stripe_md *lsm);
288 struct lov_extent *lovea_idx2le(struct lov_stripe_md *lsm, int stripe_no);
289 struct lov_extent *lovea_off2le(struct lov_stripe_md *lsm, obd_off lov_off);
290 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
291 struct obdo *oa, void *data);
293 extern struct file_operations lov_proc_target_fops;
295 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
297 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
299 memset(lvars, 0, sizeof(*lvars));
304 extern struct lu_device_type lov_device_type;
307 extern lustre_hash_ops_t pool_hash_operations;
308 /* ost_pool methods */
309 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
310 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
311 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
312 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
313 int lov_ost_pool_free(struct ost_pool *op);
315 /* high level pool methods */
316 int lov_pool_new(struct obd_device *obd, char *poolname);
317 int lov_pool_del(struct obd_device *obd, char *poolname);
318 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
319 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
320 void lov_dump_pool(int level, struct pool_desc *pool);
321 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
322 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
323 void lov_pool_putref(struct pool_desc *pool);