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 <obd_class.h>
41 #include <lustre/lustre_user.h>
43 struct lov_lock_handles {
44 struct portals_handle llh_handle;
45 atomic_t llh_refcount;
47 struct lustre_handle llh_handles[0];
51 struct obd_info rq_oi;
52 struct lov_request_set *rq_rqset;
54 struct list_head rq_link;
56 int rq_idx; /* index in lov->tgts array */
57 int rq_stripe; /* stripe number */
60 int rq_buflen; /* length of sub_md */
66 struct lov_request_set {
67 struct ldlm_enqueue_info*set_ei;
68 struct obd_info *set_oi;
69 atomic_t set_refcount;
70 struct obd_export *set_exp;
71 /* XXX: There is @set_exp already, however obd_statfs gets obd_device
73 struct obd_device *set_obd;
77 struct llog_cookie *set_cookies;
79 struct obd_trans_info *set_oti;
81 struct brw_page *set_pga;
82 struct lov_lock_handles *set_lockh;
83 struct list_head set_list;
84 cfs_waitq_t set_waitq;
87 extern cfs_mem_cache_t *lov_oinfo_slab;
89 static inline void lov_llh_addref(void *llhp)
91 struct lov_lock_handles *llh = llhp;
92 atomic_inc(&llh->llh_refcount);
93 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
94 atomic_read(&llh->llh_refcount));
97 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
99 struct lov_lock_handles *llh;
101 OBD_ALLOC(llh, sizeof *llh +
102 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
105 atomic_set(&llh->llh_refcount, 2);
106 llh->llh_stripe_count = lsm->lsm_stripe_count;
107 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
108 class_handle_hash(&llh->llh_handle, lov_llh_addref);
112 static inline struct lov_lock_handles *
113 lov_handle2llh(struct lustre_handle *handle)
115 LASSERT(handle != NULL);
116 return(class_handle2object(handle->cookie));
119 static inline void lov_llh_put(struct lov_lock_handles *llh)
121 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
122 atomic_read(&llh->llh_refcount) - 1);
123 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
124 atomic_read(&llh->llh_refcount) < 0x5a5a);
125 if (atomic_dec_and_test(&llh->llh_refcount)) {
126 class_handle_unhash(&llh->llh_handle);
127 /* The structure may be held by other threads because RCU.
129 if (atomic_read(&llh->llh_refcount))
132 OBD_FREE_RCU(llh, sizeof *llh +
133 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
138 #define lov_uuid2str(lv, index) \
139 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
142 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
143 struct lov_stripe_md *lsm, int stripeno, int *set);
144 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
145 struct ost_lvb *lvb, int kms_only);
146 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
147 obd_off size, int shrink);
148 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
149 struct ost_lvb *lvb, __u64 *kms_place);
152 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
154 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
155 int stripeno, obd_off *obd_off);
156 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
158 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
159 obd_off start, obd_off end,
160 obd_off *obd_start, obd_off *obd_end);
161 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
164 #define LOV_USES_ASSIGNED_STRIPE 0
165 #define LOV_USES_DEFAULT_STRIPE 1
166 int qos_add_tgt(struct obd_device *obd, __u32 index);
167 int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
168 void qos_shrink_lsm(struct lov_request_set *set);
169 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
170 void qos_update(struct lov_obd *lov);
171 void qos_statfs_done(struct lov_obd *lov);
172 void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait);
173 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
176 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
177 int lov_finished_set(struct lov_request_set *set);
178 void lov_update_set(struct lov_request_set *set,
179 struct lov_request *req, int rc);
180 int lov_update_common_set(struct lov_request_set *set,
181 struct lov_request *req, int rc);
182 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
183 struct lov_stripe_md **ea, struct obdo *src_oa,
184 struct obd_trans_info *oti,
185 struct lov_request_set **reqset);
186 int cb_create_update(void *cookie, int rc);
187 int lov_update_create_set(struct lov_request_set *set,
188 struct lov_request *req, int rc);
189 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
190 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
191 obd_count oa_bufs, struct brw_page *pga,
192 struct obd_trans_info *oti,
193 struct lov_request_set **reqset);
194 int lov_fini_brw_set(struct lov_request_set *set);
195 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
196 struct lov_request_set **reqset);
197 int lov_fini_getattr_set(struct lov_request_set *set);
198 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
199 struct obdo *src_oa, struct lov_stripe_md *lsm,
200 struct obd_trans_info *oti,
201 struct lov_request_set **reqset);
202 int lov_update_destroy_set(struct lov_request_set *set,
203 struct lov_request *req, int rc);
204 int lov_fini_destroy_set(struct lov_request_set *set);
205 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
206 struct obd_trans_info *oti,
207 struct lov_request_set **reqset);
208 int lov_update_setattr_set(struct lov_request_set *set,
209 struct lov_request *req, int rc);
210 int lov_fini_setattr_set(struct lov_request_set *set);
211 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
212 struct obd_trans_info *oti,
213 struct lov_request_set **reqset);
214 int lov_fini_punch_set(struct lov_request_set *set);
215 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
217 struct lov_stripe_md *lsm, obd_off start,
218 obd_off end, struct lov_request_set **reqset);
219 int lov_fini_sync_set(struct lov_request_set *set);
220 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
221 struct ldlm_enqueue_info *einfo,
222 struct lov_request_set **reqset);
223 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
224 struct ptlrpc_request_set *rqset);
225 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
226 struct lov_stripe_md *lsm,
227 ldlm_policy_data_t *policy, __u32 mode,
228 struct lustre_handle *lockh,
229 struct lov_request_set **reqset);
230 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
232 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
233 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
234 struct lov_stripe_md *lsm,
235 __u32 mode, struct lustre_handle *lockh,
236 struct lov_request_set **reqset);
237 int lov_fini_cancel_set(struct lov_request_set *set);
238 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
239 struct lov_request_set **reqset);
240 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
242 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
244 int lov_fini_statfs_set(struct lov_request_set *set);
245 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
248 void lov_fix_desc(struct lov_desc *desc);
249 void lov_fix_desc_stripe_size(__u64 *val);
250 void lov_fix_desc_stripe_count(__u32 *val);
251 void lov_fix_desc_pattern(__u32 *val);
252 void lov_fix_desc_qos_maxage(__u32 *val);
253 int lov_get_stripecnt(struct lov_obd *lov, __u32 stripe_count);
254 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
255 struct obd_connect_data *data);
256 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
257 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
258 __u32 *indexp, int *genp);
259 int lov_del_target(struct obd_device *obd, __u32 index,
260 struct obd_uuid *uuidp, int gen);
262 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
263 struct obd_device *tgt, int count, struct llog_catid *logid,
264 struct obd_uuid *uuid);
265 int lov_llog_finish(struct obd_device *obd, int count);
268 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
269 struct lov_stripe_md *lsm);
270 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
271 struct lov_mds_md *lmm, int lmm_bytes);
272 int lov_setstripe(struct obd_export *exp, int max_lmm_size,
273 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
274 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
275 struct lov_user_md *lump);
276 int lov_getstripe(struct obd_export *exp,
277 struct lov_stripe_md *lsm, struct lov_user_md *lump);
278 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count,
279 int pattern, int magic);
280 void lov_free_memmd(struct lov_stripe_md **lsmp);
282 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
283 void lov_dump_lmm_join(int level, struct lov_mds_md_join *lmmj);
284 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
285 void lov_dump_lmm(int level, void *lmm);
288 int lov_unpackmd_join(struct lov_obd *lov, struct lov_stripe_md *lsm,
289 struct lov_mds_md *lmm);
290 struct lov_stripe_md *lsm_alloc_plain(int stripe_count, int *size);
291 void lsm_free_plain(struct lov_stripe_md *lsm);
293 struct lov_extent *lovea_idx2le(struct lov_stripe_md *lsm, int stripe_no);
294 struct lov_extent *lovea_off2le(struct lov_stripe_md *lsm, obd_off lov_off);
295 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
296 struct obdo *oa, void *data);
298 extern struct file_operations lov_proc_target_fops;
300 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
302 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
304 memset(lvars, 0, sizeof(*lvars));
309 extern struct lu_device_type lov_device_type;
312 extern lustre_hash_ops_t pool_hash_operations;
313 /* ost_pool methods */
314 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
315 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
316 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
317 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
318 int lov_ost_pool_free(struct ost_pool *op);
320 /* high level pool methods */
321 int lov_pool_new(struct obd_device *obd, char *poolname);
322 int lov_pool_del(struct obd_device *obd, char *poolname);
323 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
324 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
325 void lov_dump_pool(int level, struct pool_desc *pool);
326 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
327 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
328 void lov_pool_putref(struct pool_desc *pool);
330 #if BITS_PER_LONG == 64
331 # define ll_do_div64(n,base) ({ \
332 uint64_t __base = (base); \
334 __rem = ((uint64_t)(n)) % __base; \
335 (n) = ((uint64_t)(n)) / __base; \
338 #elif BITS_PER_LONG == 32
339 # define ll_do_div64(n,base) ({ \
341 if ((sizeof(base) > 4) && (((base)&0xffffffff00000000ULL) != 0)) { \
343 LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), "64 bit lov "\
344 "division %llu / %llu\n", (n), (base)); \
345 __remainder = (n) & (LOV_MIN_STRIPE_SIZE - 1); \
346 (n) >>= LOV_MIN_STRIPE_BITS; \
347 (base) >>= LOV_MIN_STRIPE_BITS; \
348 __rem = do_div(n, base); \
349 __rem <<= LOV_MIN_STRIPE_BITS; \
350 __rem += __remainder; \
352 __rem = do_div(n, base); \
357 #error Unsupported architecture.