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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * Copyright (c) 2011 Whamcloud, Inc.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
40 #ifndef LOV_INTERNAL_H
41 #define LOV_INTERNAL_H
43 #include <obd_class.h>
44 #include <lustre/lustre_user.h>
46 struct lov_lock_handles {
47 struct portals_handle llh_handle;
48 cfs_atomic_t llh_refcount;
50 struct lustre_handle llh_handles[0];
54 struct obd_info rq_oi;
55 struct lov_request_set *rq_rqset;
59 int rq_idx; /* index in lov->tgts array */
60 int rq_stripe; /* stripe number */
63 int rq_buflen; /* length of sub_md */
69 struct lov_request_set {
70 struct ldlm_enqueue_info*set_ei;
71 struct obd_info *set_oi;
72 cfs_atomic_t set_refcount;
73 struct obd_export *set_exp;
74 /* XXX: There is @set_exp already, however obd_statfs gets obd_device
76 struct obd_device *set_obd;
78 cfs_atomic_t set_completes;
79 cfs_atomic_t set_success;
80 struct llog_cookie *set_cookies;
82 struct obd_trans_info *set_oti;
84 struct brw_page *set_pga;
85 struct lov_lock_handles *set_lockh;
87 cfs_waitq_t set_waitq;
88 cfs_spinlock_t set_lock;
91 extern cfs_mem_cache_t *lov_oinfo_slab;
93 static inline void lov_llh_addref(void *llhp)
95 struct lov_lock_handles *llh = llhp;
96 cfs_atomic_inc(&llh->llh_refcount);
97 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
98 cfs_atomic_read(&llh->llh_refcount));
101 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
103 struct lov_lock_handles *llh;
105 OBD_ALLOC(llh, sizeof *llh +
106 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
109 cfs_atomic_set(&llh->llh_refcount, 2);
110 llh->llh_stripe_count = lsm->lsm_stripe_count;
111 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
112 class_handle_hash(&llh->llh_handle, lov_llh_addref);
116 void lov_finish_set(struct lov_request_set *set);
118 static inline void lov_get_reqset(struct lov_request_set *set)
120 LASSERT(set != NULL);
121 LASSERT(cfs_atomic_read(&set->set_refcount) > 0);
122 cfs_atomic_inc(&set->set_refcount);
125 static inline void lov_put_reqset(struct lov_request_set *set)
127 if (cfs_atomic_dec_and_test(&set->set_refcount))
131 static inline struct lov_lock_handles *
132 lov_handle2llh(struct lustre_handle *handle)
134 LASSERT(handle != NULL);
135 return(class_handle2object(handle->cookie));
138 static inline void lov_llh_put(struct lov_lock_handles *llh)
140 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
141 cfs_atomic_read(&llh->llh_refcount) - 1);
142 LASSERT(cfs_atomic_read(&llh->llh_refcount) > 0 &&
143 cfs_atomic_read(&llh->llh_refcount) < 0x5a5a);
144 if (cfs_atomic_dec_and_test(&llh->llh_refcount)) {
145 class_handle_unhash(&llh->llh_handle);
146 /* The structure may be held by other threads because RCU.
148 if (cfs_atomic_read(&llh->llh_refcount))
151 OBD_FREE_RCU(llh, sizeof *llh +
152 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
157 #define lov_uuid2str(lv, index) \
158 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
161 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
162 struct lov_stripe_md *lsm, int stripeno, int *set);
163 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
164 struct ost_lvb *lvb, int kms_only);
165 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
166 obd_off size, int shrink);
167 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
168 struct ost_lvb *lvb, __u64 *kms_place);
171 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
173 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
174 int stripeno, obd_off *obd_off);
175 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
177 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
178 obd_off start, obd_off end,
179 obd_off *obd_start, obd_off *obd_end);
180 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
183 #define LOV_USES_ASSIGNED_STRIPE 0
184 #define LOV_USES_DEFAULT_STRIPE 1
185 int qos_add_tgt(struct obd_device *obd, __u32 index);
186 int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
187 void qos_shrink_lsm(struct lov_request_set *set);
188 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
189 void qos_update(struct lov_obd *lov);
190 void qos_statfs_done(struct lov_obd *lov);
191 void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait);
192 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
195 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
196 int lov_finished_set(struct lov_request_set *set);
197 void lov_update_set(struct lov_request_set *set,
198 struct lov_request *req, int rc);
199 int lov_update_common_set(struct lov_request_set *set,
200 struct lov_request *req, int rc);
201 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
202 struct lov_stripe_md **ea, struct obdo *src_oa,
203 struct obd_trans_info *oti,
204 struct lov_request_set **reqset);
205 int cb_create_update(void *cookie, int rc);
206 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
207 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
208 obd_count oa_bufs, struct brw_page *pga,
209 struct obd_trans_info *oti,
210 struct lov_request_set **reqset);
211 int lov_fini_brw_set(struct lov_request_set *set);
212 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
213 struct lov_request_set **reqset);
214 int lov_fini_getattr_set(struct lov_request_set *set);
215 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
216 struct obdo *src_oa, struct lov_stripe_md *lsm,
217 struct obd_trans_info *oti,
218 struct lov_request_set **reqset);
219 int lov_update_destroy_set(struct lov_request_set *set,
220 struct lov_request *req, int rc);
221 int lov_fini_destroy_set(struct lov_request_set *set);
222 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
223 struct obd_trans_info *oti,
224 struct lov_request_set **reqset);
225 int lov_update_setattr_set(struct lov_request_set *set,
226 struct lov_request *req, int rc);
227 int lov_fini_setattr_set(struct lov_request_set *set);
228 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
229 struct obd_trans_info *oti,
230 struct lov_request_set **reqset);
231 int lov_fini_punch_set(struct lov_request_set *set);
232 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
233 obd_off start, obd_off end,
234 struct lov_request_set **reqset);
235 int lov_fini_sync_set(struct lov_request_set *set);
236 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
237 struct ldlm_enqueue_info *einfo,
238 struct lov_request_set **reqset);
239 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
240 struct ptlrpc_request_set *rqset);
241 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
242 struct lov_stripe_md *lsm,
243 ldlm_policy_data_t *policy, __u32 mode,
244 struct lustre_handle *lockh,
245 struct lov_request_set **reqset);
246 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
247 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
248 struct lov_stripe_md *lsm,
249 __u32 mode, struct lustre_handle *lockh,
250 struct lov_request_set **reqset);
251 int lov_fini_cancel_set(struct lov_request_set *set);
252 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
253 struct lov_request_set **reqset);
254 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
256 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
258 int lov_fini_statfs_set(struct lov_request_set *set);
259 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
262 void lov_fix_desc(struct lov_desc *desc);
263 void lov_fix_desc_stripe_size(__u64 *val);
264 void lov_fix_desc_stripe_count(__u32 *val);
265 void lov_fix_desc_pattern(__u32 *val);
266 void lov_fix_desc_qos_maxage(__u32 *val);
267 int lov_get_stripecnt(struct lov_obd *lov, __u32 stripe_count);
268 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
269 struct obd_connect_data *data);
270 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
271 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
272 __u32 *indexp, int *genp);
273 int lov_del_target(struct obd_device *obd, __u32 index,
274 struct obd_uuid *uuidp, int gen);
276 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
277 struct obd_device *tgt, int *idx);
278 int lov_llog_finish(struct obd_device *obd, int count);
281 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
282 struct lov_stripe_md *lsm);
283 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
284 struct lov_mds_md *lmm, int lmm_bytes);
285 int lov_setstripe(struct obd_export *exp, int max_lmm_size,
286 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
287 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
288 struct lov_user_md *lump);
289 int lov_getstripe(struct obd_export *exp,
290 struct lov_stripe_md *lsm, struct lov_user_md *lump);
291 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count,
292 int pattern, int magic);
293 void lov_free_memmd(struct lov_stripe_md **lsmp);
295 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
296 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
297 void lov_dump_lmm(int level, void *lmm);
300 struct lov_stripe_md *lsm_alloc_plain(int stripe_count, int *size);
301 void lsm_free_plain(struct lov_stripe_md *lsm);
303 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
304 struct obdo *oa, void *data);
306 extern struct file_operations lov_proc_target_fops;
308 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
310 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
312 memset(lvars, 0, sizeof(*lvars));
317 extern struct lu_device_type lov_device_type;
320 extern cfs_hash_ops_t pool_hash_operations;
321 /* ost_pool methods */
322 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
323 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
324 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
325 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
326 int lov_ost_pool_free(struct ost_pool *op);
328 /* high level pool methods */
329 int lov_pool_new(struct obd_device *obd, char *poolname);
330 int lov_pool_del(struct obd_device *obd, char *poolname);
331 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
332 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
333 void lov_dump_pool(int level, struct pool_desc *pool);
334 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
335 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
336 void lov_pool_putref(struct pool_desc *pool);
338 #if BITS_PER_LONG == 64
339 # define ll_do_div64(n,base) ({ \
340 uint64_t __base = (base); \
342 __rem = ((uint64_t)(n)) % __base; \
343 (n) = ((uint64_t)(n)) / __base; \
346 #elif BITS_PER_LONG == 32
347 # define ll_do_div64(n,base) ({ \
349 if ((sizeof(base) > 4) && (((base)&0xffffffff00000000ULL) != 0)) { \
351 LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), "64 bit lov "\
352 "division %llu / %llu\n", (n), (base)); \
353 __remainder = (n) & (LOV_MIN_STRIPE_SIZE - 1); \
354 (n) >>= LOV_MIN_STRIPE_BITS; \
355 (base) >>= LOV_MIN_STRIPE_BITS; \
356 __rem = do_div(n, base); \
357 __rem <<= LOV_MIN_STRIPE_BITS; \
358 __rem += __remainder; \
360 __rem = do_div(n, base); \
365 #error Unsupported architecture.