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13 * General Public License version 2 for more details (a copy is included
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27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osp/osp_internal.h
38 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
41 #ifndef _OSP_INTERNAL_H
42 #define _OSP_INTERNAL_H
45 #include <obd_class.h>
46 #include <dt_object.h>
47 #include <lustre_fid.h>
50 * Infrastructure to support tracking of last committed llog record
52 struct osp_id_tracker {
55 __u32 otr_committed_id;
56 /* callback is register once per diskfs -- that's the whole point */
57 struct dt_txn_callback otr_tx_cb;
58 /* single node can run many clusters */
59 cfs_list_t otr_wakeup_list;
61 /* underlying shared device */
62 struct dt_device *otr_dev;
63 /* how many users of this tracker */
64 cfs_atomic_t otr_refcount;
68 struct dt_device opd_dt_dev;
69 /* corresponded OST index */
71 /* device used to store persistent state (llogs, last ids) */
72 struct obd_export *opd_storage_exp;
73 struct dt_device *opd_storage;
74 struct dt_object *opd_last_used_file;
76 /* stored persistently in LE format, updated directly to/from disk
77 * and required le64_to_cpu() conversion before use.
78 * Protected by opd_pre_lock */
79 volatile obd_id opd_last_used_id;
83 /* connection to OST */
84 struct obd_device *opd_obd;
85 struct obd_export *opd_exp;
86 struct obd_uuid opd_cluuid;
87 struct obd_connect_data *opd_connect_data;
89 cfs_proc_dir_entry_t *opd_proc_entry;
90 struct lprocfs_stats *opd_stats;
91 /* connection status. */
92 int opd_new_connection;
93 int opd_got_disconnected;
94 int opd_imp_connected;
96 int opd_imp_seen_connected:1;
98 /* whether local recovery is completed:
99 * reported via ->ldo_recovery_complete() */
100 int opd_recovery_completed;
105 spinlock_t opd_pre_lock;
106 /* last id assigned in creation */
107 __u64 opd_pre_used_id;
108 /* last created id OST reported, next-created - available id's */
109 __u64 opd_pre_last_created;
110 /* how many ids are reserved in declare, we shouldn't block in create */
111 __u64 opd_pre_reserved;
112 /* dedicate precreate thread */
113 struct ptlrpc_thread opd_pre_thread;
114 /* thread waits for signals about pool going empty */
115 cfs_waitq_t opd_pre_waitq;
116 /* consumers (who needs new ids) wait here */
117 cfs_waitq_t opd_pre_user_waitq;
118 /* current precreation status: working, failed, stopping? */
120 /* how many to precreate next time */
121 int opd_pre_grow_count;
122 int opd_pre_min_grow_count;
123 int opd_pre_max_grow_count;
124 /* whether to grow precreation window next time or not */
125 int opd_pre_grow_slow;
126 /* cleaning up orphans or recreating missing objects */
127 int opd_pre_recovering;
130 * OST synchronization
132 spinlock_t opd_syn_lock;
133 /* unique generation, to recognize start of new records in the llog */
134 struct llog_gen opd_syn_generation;
135 /* number of changes to sync, used to wake up sync thread */
136 unsigned long opd_syn_changes;
137 /* processing of changes from previous mount is done? */
138 int opd_syn_prev_done;
140 struct ptlrpc_thread opd_syn_thread;
141 cfs_waitq_t opd_syn_waitq;
142 /* list of remotely committed rpc */
143 cfs_list_t opd_syn_committed_there;
144 /* number of changes being under sync */
145 int opd_syn_sync_in_progress;
146 /* number of RPCs in flight - flow control */
147 int opd_syn_rpc_in_flight;
148 int opd_syn_max_rpc_in_flight;
149 /* number of RPC in processing (including non-committed by OST) */
150 int opd_syn_rpc_in_progress;
151 int opd_syn_max_rpc_in_progress;
152 /* osd api's commit cb control structure */
153 struct dt_txn_callback opd_syn_txn_cb;
154 /* last used change number -- semantically similar to transno */
155 unsigned long opd_syn_last_used_id;
156 /* last committed change number -- semantically similar to
158 unsigned long opd_syn_last_committed_id;
159 /* last processed (taken from llog) id */
160 unsigned long opd_syn_last_processed_id;
161 struct osp_id_tracker *opd_syn_tracker;
162 cfs_list_t opd_syn_ontrack;
165 * statfs related fields: OSP maintains it on its own
167 struct obd_statfs opd_statfs;
168 cfs_time_t opd_statfs_fresh_till;
169 cfs_timer_t opd_statfs_timer;
170 int opd_statfs_update_in_progress;
171 /* how often to update statfs data */
172 int opd_statfs_maxage;
174 cfs_proc_dir_entry_t *opd_symlink;
177 extern cfs_mem_cache_t *osp_object_kmem;
179 /* this is a top object */
181 struct lu_object_header opo_header;
182 struct dt_object opo_obj;
187 extern struct lu_object_operations osp_lu_obj_ops;
188 extern const struct dt_device_operations osp_dt_ops;
190 struct osp_thread_info {
191 struct lu_buf osi_lb;
192 struct lu_fid osi_fid;
193 struct lu_attr osi_attr;
194 struct ost_id osi_oi;
198 struct llog_rec_hdr osi_hdr;
199 struct llog_unlink64_rec osi_unlink;
200 struct llog_setattr64_rec osi_setattr;
201 struct llog_gen_rec osi_gen;
203 struct llog_cookie osi_cookie;
204 struct llog_catid osi_cid;
207 static inline void osp_objid_buf_prep(struct osp_thread_info *osi,
208 struct osp_device *d, int index)
210 osi->osi_lb.lb_buf = (void *)&d->opd_last_used_id;
211 osi->osi_lb.lb_len = sizeof(d->opd_last_used_id);
212 osi->osi_off = sizeof(d->opd_last_used_id) * index;
215 extern struct lu_context_key osp_thread_key;
217 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
219 struct osp_thread_info *info;
221 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
223 lu_env_refill((struct lu_env *)env);
224 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
230 struct osp_txn_info {
231 __u32 oti_current_id;
234 extern struct lu_context_key osp_txn_key;
236 static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx)
238 struct osp_txn_info *info;
240 info = lu_context_key_get(ctx, &osp_txn_key);
244 extern const struct lu_device_operations osp_lu_ops;
246 static inline int lu_device_is_osp(struct lu_device *d)
248 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops);
251 static inline struct osp_device *lu2osp_dev(struct lu_device *d)
253 LASSERT(lu_device_is_osp(d));
254 return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev);
257 static inline struct lu_device *osp2lu_dev(struct osp_device *d)
259 return &d->opd_dt_dev.dd_lu_dev;
262 static inline struct osp_device *dt2osp_dev(struct dt_device *d)
264 LASSERT(lu_device_is_osp(&d->dd_lu_dev));
265 return container_of0(d, struct osp_device, opd_dt_dev);
268 static inline struct osp_object *lu2osp_obj(struct lu_object *o)
270 LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev)));
271 return container_of0(o, struct osp_object, opo_obj.do_lu);
274 static inline struct lu_object *osp2lu_obj(struct osp_object *obj)
276 return &obj->opo_obj.do_lu;
279 static inline struct osp_object *osp_obj(const struct lu_object *o)
281 LASSERT(lu_device_is_osp(o->lo_dev));
282 return container_of0(o, struct osp_object, opo_obj.do_lu);
285 static inline struct osp_object *dt2osp_obj(const struct dt_object *d)
287 return osp_obj(&d->do_lu);
290 static inline struct dt_object *osp_object_child(struct osp_object *o)
292 return container_of0(lu_object_next(osp2lu_obj(o)),
293 struct dt_object, do_lu);
297 void osp_update_last_id(struct osp_device *d, obd_id objid);
299 /* osp_precreate.c */
300 int osp_init_precreate(struct osp_device *d);
301 int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
302 __u64 osp_precreate_get_id(struct osp_device *d);
303 void osp_precreate_fini(struct osp_device *d);
304 int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
305 void osp_pre_update_status(struct osp_device *d, int rc);
306 void osp_statfs_need_now(struct osp_device *d);
309 void lprocfs_osp_init_vars(struct lprocfs_static_vars *lvars);
310 void osp_lprocfs_init(struct osp_device *osp);
313 int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
314 llog_op_type type, struct thandle *th);
315 int osp_sync_add(const struct lu_env *env, struct osp_object *o,
316 llog_op_type type, struct thandle *th,
317 const struct lu_attr *attr);
318 int osp_sync_init(const struct lu_env *env, struct osp_device *d);
319 int osp_sync_fini(struct osp_device *d);
320 void __osp_sync_check_for_work(struct osp_device *d);
323 int osp_init_for_ost(const struct lu_env *env, struct osp_device *m,
324 struct lu_device_type *ldt, struct lustre_cfg *cfg);
325 int osp_disconnect(struct osp_device *d);
326 int osp_fini_for_ost(struct osp_device *osp);