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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
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,
99 /* whether local recovery is completed:
100 * reported via ->ldo_recovery_complete() */
101 int opd_recovery_completed;
106 spinlock_t opd_pre_lock;
107 /* last id assigned in creation */
108 __u64 opd_pre_used_id;
109 /* last created id OST reported, next-created - available id's */
110 __u64 opd_pre_last_created;
111 /* how many ids are reserved in declare, we shouldn't block in create */
112 __u64 opd_pre_reserved;
113 /* dedicate precreate thread */
114 struct ptlrpc_thread opd_pre_thread;
115 /* thread waits for signals about pool going empty */
116 cfs_waitq_t opd_pre_waitq;
117 /* consumers (who needs new ids) wait here */
118 cfs_waitq_t opd_pre_user_waitq;
119 /* current precreation status: working, failed, stopping? */
121 /* how many to precreate next time */
122 int opd_pre_grow_count;
123 int opd_pre_min_grow_count;
124 int opd_pre_max_grow_count;
125 /* whether to grow precreation window next time or not */
126 int opd_pre_grow_slow;
127 /* cleaning up orphans or recreating missing objects */
128 int opd_pre_recovering;
131 * OST synchronization
133 spinlock_t opd_syn_lock;
134 /* unique generation, to recognize start of new records in the llog */
135 struct llog_gen opd_syn_generation;
136 /* number of changes to sync, used to wake up sync thread */
137 unsigned long opd_syn_changes;
138 /* processing of changes from previous mount is done? */
139 int opd_syn_prev_done;
141 struct ptlrpc_thread opd_syn_thread;
142 cfs_waitq_t opd_syn_waitq;
143 /* list of remotely committed rpc */
144 cfs_list_t opd_syn_committed_there;
145 /* number of changes being under sync */
146 int opd_syn_sync_in_progress;
147 /* number of RPCs in flight - flow control */
148 int opd_syn_rpc_in_flight;
149 int opd_syn_max_rpc_in_flight;
150 /* number of RPC in processing (including non-committed by OST) */
151 int opd_syn_rpc_in_progress;
152 int opd_syn_max_rpc_in_progress;
153 /* osd api's commit cb control structure */
154 struct dt_txn_callback opd_syn_txn_cb;
155 /* last used change number -- semantically similar to transno */
156 unsigned long opd_syn_last_used_id;
157 /* last committed change number -- semantically similar to
159 unsigned long opd_syn_last_committed_id;
160 /* last processed (taken from llog) id */
161 unsigned long opd_syn_last_processed_id;
162 struct osp_id_tracker *opd_syn_tracker;
163 cfs_list_t opd_syn_ontrack;
166 * statfs related fields: OSP maintains it on its own
168 struct obd_statfs opd_statfs;
169 cfs_time_t opd_statfs_fresh_till;
170 cfs_timer_t opd_statfs_timer;
171 int opd_statfs_update_in_progress;
172 /* how often to update statfs data */
173 int opd_statfs_maxage;
175 cfs_proc_dir_entry_t *opd_symlink;
178 extern cfs_mem_cache_t *osp_object_kmem;
180 /* this is a top object */
182 struct lu_object_header opo_header;
183 struct dt_object opo_obj;
188 extern struct lu_object_operations osp_lu_obj_ops;
189 extern const struct dt_device_operations osp_dt_ops;
191 struct osp_thread_info {
192 struct lu_buf osi_lb;
193 struct lu_fid osi_fid;
194 struct lu_attr osi_attr;
195 struct ost_id osi_oi;
199 struct llog_rec_hdr osi_hdr;
200 struct llog_unlink64_rec osi_unlink;
201 struct llog_setattr64_rec osi_setattr;
202 struct llog_gen_rec osi_gen;
204 struct llog_cookie osi_cookie;
205 struct llog_catid osi_cid;
206 struct lu_seq_range osi_seq;
209 static inline void osp_objid_buf_prep(struct osp_thread_info *osi,
210 struct osp_device *d, int index)
212 osi->osi_lb.lb_buf = (void *)&d->opd_last_used_id;
213 osi->osi_lb.lb_len = sizeof(d->opd_last_used_id);
214 osi->osi_off = sizeof(d->opd_last_used_id) * index;
217 extern struct lu_context_key osp_thread_key;
219 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
221 struct osp_thread_info *info;
223 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
225 lu_env_refill((struct lu_env *)env);
226 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
232 struct osp_txn_info {
233 __u32 oti_current_id;
236 extern struct lu_context_key osp_txn_key;
238 static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx)
240 struct osp_txn_info *info;
242 info = lu_context_key_get(ctx, &osp_txn_key);
246 extern const struct lu_device_operations osp_lu_ops;
248 static inline int lu_device_is_osp(struct lu_device *d)
250 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops);
253 static inline struct osp_device *lu2osp_dev(struct lu_device *d)
255 LASSERT(lu_device_is_osp(d));
256 return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev);
259 static inline struct lu_device *osp2lu_dev(struct osp_device *d)
261 return &d->opd_dt_dev.dd_lu_dev;
264 static inline struct osp_device *dt2osp_dev(struct dt_device *d)
266 LASSERT(lu_device_is_osp(&d->dd_lu_dev));
267 return container_of0(d, struct osp_device, opd_dt_dev);
270 static inline struct osp_object *lu2osp_obj(struct lu_object *o)
272 LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev)));
273 return container_of0(o, struct osp_object, opo_obj.do_lu);
276 static inline struct lu_object *osp2lu_obj(struct osp_object *obj)
278 return &obj->opo_obj.do_lu;
281 static inline struct osp_object *osp_obj(const struct lu_object *o)
283 LASSERT(lu_device_is_osp(o->lo_dev));
284 return container_of0(o, struct osp_object, opo_obj.do_lu);
287 static inline struct osp_object *dt2osp_obj(const struct dt_object *d)
289 return osp_obj(&d->do_lu);
292 static inline struct dt_object *osp_object_child(struct osp_object *o)
294 return container_of0(lu_object_next(osp2lu_obj(o)),
295 struct dt_object, do_lu);
298 #define osp_init_rpc_lock(lck) mdc_init_rpc_lock(lck)
299 #define osp_get_rpc_lock(lck, it) mdc_get_rpc_lock(lck, it)
300 #define osp_put_rpc_lock(lck, it) mdc_put_rpc_lock(lck, it)
303 void osp_update_last_id(struct osp_device *d, obd_id objid);
304 extern struct llog_operations osp_mds_ost_orig_logops;
306 /* osp_precreate.c */
307 int osp_init_precreate(struct osp_device *d);
308 int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
309 __u64 osp_precreate_get_id(struct osp_device *d);
310 void osp_precreate_fini(struct osp_device *d);
311 int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
312 void osp_pre_update_status(struct osp_device *d, int rc);
313 void osp_statfs_need_now(struct osp_device *d);
316 void lprocfs_osp_init_vars(struct lprocfs_static_vars *lvars);
317 void osp_lprocfs_init(struct osp_device *osp);
320 int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
321 llog_op_type type, struct thandle *th);
322 int osp_sync_add(const struct lu_env *env, struct osp_object *o,
323 llog_op_type type, struct thandle *th,
324 const struct lu_attr *attr);
325 int osp_sync_init(const struct lu_env *env, struct osp_device *d);
326 int osp_sync_fini(struct osp_device *d);
327 void __osp_sync_check_for_work(struct osp_device *d);
330 int osp_init_for_ost(const struct lu_env *env, struct osp_device *m,
331 struct lu_device_type *ldt, struct lustre_cfg *cfg);
332 int osp_disconnect(struct osp_device *d);
333 int osp_fini_for_ost(struct osp_device *osp);