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;
89 #define LOV_AP_MAGIC 8200
91 struct lov_async_page {
94 obd_off lap_sub_offset;
97 struct obd_async_page_ops *lap_caller_ops;
98 void *lap_caller_data;
101 #define LAP_FROM_COOKIE(c) \
102 (LASSERT(((struct lov_async_page *)(c))->lap_magic == LOV_AP_MAGIC), \
103 (struct lov_async_page *)(c))
105 extern cfs_mem_cache_t *lov_oinfo_slab;
107 static inline void lov_llh_addref(void *llhp)
109 struct lov_lock_handles *llh = llhp;
110 atomic_inc(&llh->llh_refcount);
111 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
112 atomic_read(&llh->llh_refcount));
115 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
117 struct lov_lock_handles *llh;
119 OBD_ALLOC(llh, sizeof *llh +
120 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
123 atomic_set(&llh->llh_refcount, 2);
124 llh->llh_stripe_count = lsm->lsm_stripe_count;
125 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
126 class_handle_hash(&llh->llh_handle, lov_llh_addref);
130 void lov_finish_set(struct lov_request_set *set);
132 static inline void lov_get_reqset(struct lov_request_set *set)
134 LASSERT(set != NULL);
135 LASSERT(atomic_read(&set->set_refcount) > 0);
136 atomic_inc(&set->set_refcount);
139 static inline void lov_put_reqset(struct lov_request_set *set)
141 if (atomic_dec_and_test(&set->set_refcount))
145 static inline struct lov_lock_handles *
146 lov_handle2llh(struct lustre_handle *handle)
148 LASSERT(handle != NULL);
149 return(class_handle2object(handle->cookie));
152 static inline void lov_llh_put(struct lov_lock_handles *llh)
154 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
155 atomic_read(&llh->llh_refcount) - 1);
156 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
157 atomic_read(&llh->llh_refcount) < 0x5a5a);
158 if (atomic_dec_and_test(&llh->llh_refcount)) {
159 class_handle_unhash(&llh->llh_handle);
160 /* The structure may be held by other threads because RCU. -jxiong */
161 if (atomic_read(&llh->llh_refcount))
164 OBD_FREE_RCU(llh, sizeof *llh +
165 sizeof(*llh->llh_handles) * llh->llh_stripe_count, &llh->llh_handle);
169 #define lov_uuid2str(lv, index) \
170 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
173 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
174 struct lov_stripe_md *lsm, int stripeno, int *set);
175 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
176 struct ost_lvb *lvb, int kms_only);
177 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
178 obd_off size, int shrink);
179 int lov_update_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
180 struct ost_lvb *lvb, obd_flag valid);
183 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
185 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
186 int stripeno, obd_off *obd_off);
187 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
189 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
190 obd_off start, obd_off end,
191 obd_off *obd_start, obd_off *obd_end);
192 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
195 #define LOV_USES_ASSIGNED_STRIPE 0
196 #define LOV_USES_DEFAULT_STRIPE 1
197 int qos_add_tgt(struct obd_device *obd, __u32 index);
198 int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt);
199 void qos_shrink_lsm(struct lov_request_set *set);
200 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
201 void qos_update(struct lov_obd *lov);
202 void qos_statfs_done(struct lov_obd *lov);
203 void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait);
204 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
207 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
208 int lov_finished_set(struct lov_request_set *set);
209 void lov_update_set(struct lov_request_set *set,
210 struct lov_request *req, int rc);
211 int lov_update_common_set(struct lov_request_set *set,
212 struct lov_request *req, int rc);
213 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
214 struct lov_stripe_md **ea, struct obdo *src_oa,
215 struct obd_trans_info *oti,
216 struct lov_request_set **reqset);
217 int cb_create_update(struct obd_info *oinfo, int rc);
218 int lov_update_create_set(struct lov_request_set *set,
219 struct lov_request *req, int rc);
220 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
221 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
222 obd_count oa_bufs, struct brw_page *pga,
223 struct obd_trans_info *oti,
224 struct lov_request_set **reqset);
225 int lov_fini_brw_set(struct lov_request_set *set);
226 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
227 struct lov_request_set **reqset);
228 int lov_fini_getattr_set(struct lov_request_set *set);
229 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
230 struct obdo *src_oa, struct lov_stripe_md *lsm,
231 struct obd_trans_info *oti,
232 struct lov_request_set **reqset);
233 int lov_update_destroy_set(struct lov_request_set *set,
234 struct lov_request *req, int rc);
235 int lov_fini_destroy_set(struct lov_request_set *set);
236 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
237 struct obd_trans_info *oti,
238 struct lov_request_set **reqset);
239 int lov_update_setattr_set(struct lov_request_set *set,
240 struct lov_request *req, int rc);
241 int lov_fini_setattr_set(struct lov_request_set *set);
242 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
243 struct obd_trans_info *oti,
244 struct lov_request_set **reqset);
245 int lov_fini_punch_set(struct lov_request_set *set);
246 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
247 obd_off start, obd_off end,
248 struct lov_request_set **reqset);
249 int lov_fini_sync_set(struct lov_request_set *set);
250 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
251 struct ldlm_enqueue_info *einfo,
252 struct lov_request_set **reqset);
253 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
254 struct ptlrpc_request_set *rqset);
255 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
256 struct lov_stripe_md *lsm,
257 ldlm_policy_data_t *policy, __u32 mode,
258 struct lustre_handle *lockh,
259 struct lov_request_set **reqset);
260 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
262 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
263 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
264 struct lov_stripe_md *lsm,
265 __u32 mode, struct lustre_handle *lockh,
266 struct lov_request_set **reqset);
267 int lov_fini_cancel_set(struct lov_request_set *set);
268 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
269 struct lov_request_set **reqset);
270 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
272 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
274 int lov_fini_statfs_set(struct lov_request_set *set);
275 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
278 void lov_fix_desc(struct lov_desc *desc);
279 void lov_fix_desc_stripe_size(__u64 *val);
280 void lov_fix_desc_stripe_count(__u32 *val);
281 void lov_fix_desc_pattern(__u32 *val);
282 void lov_fix_desc_qos_maxage(__u32 *val);
283 int lov_get_stripecnt(struct lov_obd *lov, __u32 stripe_count);
286 int lov_llog_init(struct obd_device *obd, struct obd_device *tgt,
288 int lov_llog_finish(struct obd_device *obd, int count);
291 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
292 struct lov_stripe_md *lsm);
293 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
294 struct lov_mds_md *lmm, int lmm_bytes);
295 int lov_setstripe(struct obd_export *exp,
296 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
297 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
298 struct lov_user_md *lump);
299 int lov_getstripe(struct obd_export *exp,
300 struct lov_stripe_md *lsm, struct lov_user_md *lump);
301 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count,
302 int pattern, int magic);
303 void lov_free_memmd(struct lov_stripe_md **lsmp);
305 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
306 void lov_dump_lmm_join(int level, struct lov_mds_md_join *lmmj);
307 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
308 void lov_dump_lmm(int level, void *lmm);
311 int lov_unpackmd_join(struct lov_obd *lov, struct lov_stripe_md *lsm,
312 struct lov_mds_md *lmm);
313 struct lov_stripe_md *lsm_alloc_plain(int stripe_count, int *size);
314 void lsm_free_plain(struct lov_stripe_md *lsm);
316 struct lov_extent *lovea_idx2le(struct lov_stripe_md *lsm, int stripe_no);
317 struct lov_extent *lovea_off2le(struct lov_stripe_md *lsm, obd_off lov_off);
318 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
319 struct obdo *oa, void *data);
321 extern struct file_operations lov_proc_target_fops;
323 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
325 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
327 memset(lvars, 0, sizeof(*lvars));
332 extern lustre_hash_ops_t pool_hash_operations;
334 /* ost_pool methods */
335 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
336 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
337 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
338 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
339 int lov_ost_pool_free(struct ost_pool *op);
341 /* high level pool methods */
342 int lov_pool_new(struct obd_device *obd, char *poolname);
343 int lov_pool_del(struct obd_device *obd, char *poolname);
344 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
345 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
346 void lov_dump_pool(int level, struct pool_desc *pool);
347 struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname);
348 int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool);
349 void lov_pool_putref(struct pool_desc *pool);
351 #if BITS_PER_LONG == 64
352 # define ll_do_div64(n,base) ({ \
353 uint64_t __base = (base); \
355 __rem = ((uint64_t)(n)) % __base; \
356 (n) = ((uint64_t)(n)) / __base; \
359 #elif BITS_PER_LONG == 32
360 # define ll_do_div64(n,base) ({ \
362 if ((sizeof(base) > 4) && (((base)&0xffffffff00000000ULL) != 0)) { \
364 LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), "64 bit lov "\
365 "division %llu / %llu\n", (n), (base)); \
366 __remainder = (n) & (LOV_MIN_STRIPE_SIZE - 1); \
367 (n) >>= LOV_MIN_STRIPE_BITS; \
368 (base) >>= LOV_MIN_STRIPE_BITS; \
369 __rem = do_div(n, base); \
370 __rem <<= LOV_MIN_STRIPE_BITS; \
371 __rem += __remainder; \
373 __rem = do_div(n, base); \
378 #error Unsupported architecture.