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 [sun.com URL with a
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 #define LOV_AP_MAGIC 8200
87 struct lov_async_page {
90 obd_off lap_sub_offset;
94 struct obd_async_page_ops *lap_caller_ops;
95 void *lap_caller_data;
98 #define LAP_FROM_COOKIE(c) \
99 (LASSERT(((struct lov_async_page *)(c))->lap_magic == LOV_AP_MAGIC), \
100 (struct lov_async_page *)(c))
102 extern cfs_mem_cache_t *lov_oinfo_slab;
104 static inline void lov_llh_addref(void *llhp)
106 struct lov_lock_handles *llh = llhp;
107 atomic_inc(&llh->llh_refcount);
108 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
109 atomic_read(&llh->llh_refcount));
112 static inline struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
114 struct lov_lock_handles *llh;
116 OBD_ALLOC(llh, sizeof *llh +
117 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
120 atomic_set(&llh->llh_refcount, 2);
121 llh->llh_stripe_count = lsm->lsm_stripe_count;
122 CFS_INIT_LIST_HEAD(&llh->llh_handle.h_link);
123 class_handle_hash(&llh->llh_handle, lov_llh_addref);
127 static inline struct lov_lock_handles *
128 lov_handle2llh(struct lustre_handle *handle)
130 LASSERT(handle != NULL);
131 return(class_handle2object(handle->cookie));
134 static inline void lov_llh_put(struct lov_lock_handles *llh)
136 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
137 atomic_read(&llh->llh_refcount) - 1);
138 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
139 atomic_read(&llh->llh_refcount) < 0x5a5a);
140 if (atomic_dec_and_test(&llh->llh_refcount)) {
141 class_handle_unhash(&llh->llh_handle);
142 /* The structure may be held by other threads because RCU.
144 if (atomic_read(&llh->llh_refcount))
147 OBD_FREE_RCU(llh, sizeof *llh +
148 sizeof(*llh->llh_handles) * llh->llh_stripe_count,
153 #define lov_uuid2str(lv, index) \
154 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
157 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
158 struct lov_stripe_md *lsm, int stripeno, int *set);
159 int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm,
160 struct ost_lvb *lvb, int kms_only);
161 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
162 obd_off size, int shrink);
165 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
167 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
168 int stripeno, obd_off *obd_off);
169 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
171 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
172 obd_off start, obd_off end,
173 obd_off *obd_start, obd_off *obd_end);
174 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
177 #define LOV_USES_ASSIGNED_STRIPE 0
178 #define LOV_USES_DEFAULT_STRIPE 1
179 int qos_add_tgt(struct obd_device *obd, __u32 index);
180 int qos_del_tgt(struct obd_device *obd, __u32 index);
181 void qos_shrink_lsm(struct lov_request_set *set);
182 int qos_prep_create(struct obd_export *exp, struct lov_request_set *set);
183 void qos_update(struct lov_obd *lov);
184 int qos_remedy_create(struct lov_request_set *set, struct lov_request *req);
187 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
188 void lov_update_set(struct lov_request_set *set,
189 struct lov_request *req, int rc);
190 int lov_update_common_set(struct lov_request_set *set,
191 struct lov_request *req, int rc);
192 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo,
193 struct lov_stripe_md **ea, struct obdo *src_oa,
194 struct obd_trans_info *oti,
195 struct lov_request_set **reqset);
196 int lov_update_create_set(struct lov_request_set *set,
197 struct lov_request *req, int rc);
198 int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea);
199 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
200 obd_count oa_bufs, struct brw_page *pga,
201 struct obd_trans_info *oti,
202 struct lov_request_set **reqset);
203 int lov_fini_brw_set(struct lov_request_set *set);
204 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
205 struct lov_request_set **reqset);
206 int lov_fini_getattr_set(struct lov_request_set *set);
207 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
208 struct obdo *src_oa, struct lov_stripe_md *lsm,
209 struct obd_trans_info *oti,
210 struct lov_request_set **reqset);
211 int lov_update_destroy_set(struct lov_request_set *set,
212 struct lov_request *req, int rc);
213 int lov_fini_destroy_set(struct lov_request_set *set);
214 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
215 struct obd_trans_info *oti,
216 struct lov_request_set **reqset);
217 int lov_update_setattr_set(struct lov_request_set *set,
218 struct lov_request *req, int rc);
219 int lov_fini_setattr_set(struct lov_request_set *set);
220 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
221 struct obd_trans_info *oti,
222 struct lov_request_set **reqset);
223 int lov_fini_punch_set(struct lov_request_set *set);
224 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info,
226 struct lov_stripe_md *lsm, obd_off start,
227 obd_off end, struct lov_request_set **reqset);
228 int lov_fini_sync_set(struct lov_request_set *set);
229 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
230 struct ldlm_enqueue_info *einfo,
231 struct lov_request_set **reqset);
232 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
233 struct ptlrpc_request_set *rqset);
234 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
235 struct lov_stripe_md *lsm,
236 ldlm_policy_data_t *policy, __u32 mode,
237 struct lustre_handle *lockh,
238 struct lov_request_set **reqset);
239 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
241 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags);
242 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
243 struct lov_stripe_md *lsm,
244 __u32 mode, struct lustre_handle *lockh,
245 struct lov_request_set **reqset);
246 int lov_fini_cancel_set(struct lov_request_set *set);
247 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
248 struct lov_request_set **reqset);
249 void lov_update_statfs(struct obd_device *obd, struct obd_statfs *osfs,
250 struct obd_statfs *lov_sfs, int success);
251 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
253 int lov_fini_statfs_set(struct lov_request_set *set);
256 void lov_fix_desc(struct lov_desc *desc);
257 void lov_fix_desc_stripe_size(__u64 *val);
258 void lov_fix_desc_stripe_count(__u32 *val);
259 void lov_fix_desc_pattern(__u32 *val);
260 void lov_fix_desc_qos_maxage(__u32 *val);
261 int lov_get_stripecnt(struct lov_obd *lov, __u32 stripe_count);
262 void lov_getref(struct obd_device *obd);
263 void lov_putref(struct obd_device *obd);
266 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
267 struct obd_device *tgt, int count, struct llog_catid *logid,
268 struct obd_uuid *uuid);
269 int lov_llog_finish(struct obd_device *obd, int count);
272 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
273 struct lov_stripe_md *lsm);
274 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
275 struct lov_mds_md *lmm, int lmm_bytes);
276 int lov_setstripe(struct obd_export *exp,
277 struct lov_stripe_md **lsmp, struct lov_user_md *lump);
278 int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp,
279 struct lov_user_md *lump);
280 int lov_getstripe(struct obd_export *exp,
281 struct lov_stripe_md *lsm, struct lov_user_md *lump);
282 int lov_alloc_memmd(struct lov_stripe_md **lsmp, int stripe_count,
283 int pattern, int magic);
284 void lov_free_memmd(struct lov_stripe_md **lsmp);
286 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
287 void lov_dump_lmm_join(int level, struct lov_mds_md_join *lmmj);
289 int lov_unpackmd_join(struct lov_obd *lov, struct lov_stripe_md *lsm,
290 struct lov_mds_md *lmm);
291 struct lov_stripe_md *lsm_alloc_plain(int stripe_count, int *size);
292 void lsm_free_plain(struct lov_stripe_md *lsm);
294 struct lov_extent *lovea_idx2le(struct lov_stripe_md *lsm, int stripe_no);
295 struct lov_extent *lovea_off2le(struct lov_stripe_md *lsm, obd_off lov_off);
296 int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm,
297 struct obdo *oa, void *data);
299 extern struct file_operations lov_proc_target_fops;
301 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars);
303 static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
305 memset(lvars, 0, sizeof(*lvars));