4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/osp/osp_internal.h
34 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
37 #ifndef _OSP_INTERNAL_H
38 #define _OSP_INTERNAL_H
41 #include <obd_class.h>
42 #include <dt_object.h>
43 #include <md_object.h>
44 #include <lustre_fid.h>
45 #include <lustre_update.h>
46 #include <lu_target.h>
49 * Infrastructure to support tracking of last committed llog record
51 struct osp_id_tracker {
54 __u64 otr_committed_id;
55 /* callback is register once per diskfs -- that's the whole point */
56 struct dt_txn_callback otr_tx_cb;
57 /* single node can run many clusters */
58 struct list_head otr_wakeup_list;
59 struct list_head otr_list;
60 /* underlying shared device */
61 struct dt_device *otr_dev;
62 /* how many users of this tracker */
63 atomic_t otr_refcount;
66 struct osp_precreate {
71 /* last fid to assign in creation */
72 struct lu_fid osp_pre_used_fid;
73 /* last created id OST reported, next-created - available id's */
74 struct lu_fid osp_pre_last_created_fid;
75 /* how many ids are reserved in declare, we shouldn't block in create */
76 __u64 osp_pre_reserved;
77 /* consumers (who needs new ids) wait here */
78 wait_queue_head_t osp_pre_user_waitq;
79 /* current precreation status: working, failed, stopping? */
81 /* how many objects to precreate next time */
82 int osp_pre_create_count;
83 int osp_pre_min_create_count;
84 int osp_pre_max_create_count;
85 /* whether to increase precreation window next time or not */
86 int osp_pre_create_slow;
87 /* cleaning up orphans or recreating missing objects */
88 int osp_pre_recovering;
91 struct osp_update_request_sub {
92 struct object_update_request *ours_req; /* may be vmalloc'd */
94 /* Linked to osp_update_request->our_req_list */
95 struct list_head ours_list;
98 struct osp_update_request {
100 /* update request result */
103 /* List of osp_update_request_sub */
104 struct list_head our_req_list;
108 struct list_head our_cb_items;
109 struct list_head our_invalidate_cb_list;
111 /* points to thandle if this update request belongs to one */
112 struct osp_thandle *our_th;
115 __u64 our_generation;
116 /* protect our_list and flag */
117 spinlock_t our_list_lock;
118 /* linked to the list(ou_list) in osp_updates */
119 struct list_head our_list;
121 __u32 our_req_ready:1;
126 struct list_head ou_list;
128 wait_queue_head_t ou_waitq;
130 /* The next rpc version which supposed to be sent in
131 * osp_send_update_thread().*/
132 __u64 ou_rpc_version;
134 /* The rpc version assigned to the osp thandle during (osp_md_write()),
135 * which will be sent by this order. Note: the osp_thandle has be sent
136 * by this order to make sure the remote update log will follow the
137 * llog format rule. XXX: these probably should be removed once we
138 * invent new llog format */
141 /* The generation of current osp update RPC, which is used to make sure
142 * those stale RPC(with older generation) will not be sent, otherwise it
143 * will cause update lllog corruption */
146 /* dedicate update thread */
147 struct task_struct *ou_update_task;
148 struct lu_env ou_env;
151 struct osp_rpc_lock {
152 /** Lock protecting in-flight RPC concurrency. */
153 struct mutex rpcl_mutex;
154 /** Used for MDS/RPC load testing purposes. */
155 unsigned int rpcl_fakes;
159 struct dt_device opd_dt_dev;
160 /* corresponded OST index */
163 /* corrsponded MDT index, which will be used when connecting to OST
164 * for validating the connection (see ofd_parse_connect_data) */
166 /* device used to store persistent state (llogs, last ids) */
167 struct obd_export *opd_storage_exp;
168 struct dt_device *opd_storage;
169 struct dt_object *opd_last_used_oid_file;
170 struct dt_object *opd_last_used_seq_file;
172 /* stored persistently in LE format, updated directly to/from disk
173 * and required le64_to_cpu() conversion before use.
174 * Protected by opd_pre_lock */
175 struct lu_fid opd_last_used_fid;
176 /* on disk copy last_used_fid.f_oid or idif */
178 struct lu_fid opd_gap_start_fid;
180 /* connection to OST */
181 struct osp_rpc_lock opd_rpc_lock;
182 struct obd_device *opd_obd;
183 struct obd_export *opd_exp;
184 struct obd_connect_data *opd_connect_data;
186 /* connection status. */
187 unsigned int opd_new_connection:1,
188 opd_got_disconnected:1,
191 opd_imp_seen_connected:1,
194 /* whether local recovery is completed:
195 * reported via ->ldo_recovery_complete() */
196 int opd_recovery_completed;
198 /* precreate structure for OSP */
199 struct osp_precreate *opd_pre;
200 /* dedicate precreate thread */
201 struct task_struct *opd_pre_task;
202 spinlock_t opd_pre_lock;
203 /* thread waits for signals about pool going empty */
204 wait_queue_head_t opd_pre_waitq;
206 /* send update thread */
207 struct osp_updates *opd_update;
210 * OST synchronization thread
212 spinlock_t opd_sync_lock;
213 /* unique generation, to recognize start of new records in the llog */
214 struct llog_gen opd_sync_generation;
215 /* number of changes to sync, used to wake up sync thread */
216 atomic_t opd_sync_changes;
217 /* processing of changes from previous mount is done? */
218 int opd_sync_prev_done;
220 struct task_struct *opd_sync_task;
221 wait_queue_head_t opd_sync_waitq;
222 /* list of in flight rpcs */
223 struct list_head opd_sync_in_flight_list;
224 /* list of remotely committed rpc */
225 struct list_head opd_sync_committed_there;
226 /* number of RPCs in flight - flow control */
227 atomic_t opd_sync_rpcs_in_flight;
228 int opd_sync_max_rpcs_in_flight;
229 /* number of RPC in processing (including non-committed by OST) */
230 atomic_t opd_sync_rpcs_in_progress;
231 int opd_sync_max_rpcs_in_progress;
232 /* osd api's commit cb control structure */
233 struct dt_txn_callback opd_sync_txn_cb;
234 /* last used change number -- semantically similar to transno */
235 unsigned long opd_sync_last_used_id;
236 /* last committed change number -- semantically similar to
238 __u64 opd_sync_last_committed_id;
239 /* last processed catalog index */
240 int opd_sync_last_catalog_idx;
241 /* number of processed records */
242 atomic64_t opd_sync_processed_recs;
243 /* stop processing new requests until barrier=0 */
244 atomic_t opd_sync_barrier;
245 wait_queue_head_t opd_sync_barrier_waitq;
246 /* last generated id */
247 ktime_t opd_sync_next_commit_cb;
248 atomic_t opd_commits_registered;
251 * statfs related fields: OSP maintains it on its own
253 struct obd_statfs opd_statfs;
254 ktime_t opd_statfs_fresh_till;
255 struct timer_list opd_statfs_timer;
256 int opd_statfs_update_in_progress;
257 /* how often to update statfs data */
258 time64_t opd_statfs_maxage;
260 struct dentry *opd_debugfs;
262 /* If the caller wants to do some idempotent async operations on
263 * remote server, it can append the async remote requests on the
264 * osp_device::opd_async_requests via declare() functions, these
265 * requests can be packed together and sent to the remote server
266 * via single OUT RPC later. */
267 struct osp_update_request *opd_async_requests;
268 /* Protect current operations on opd_async_requests. */
269 struct mutex opd_async_requests_mutex;
270 struct list_head opd_async_updates;
271 struct rw_semaphore opd_async_updates_rwsem;
272 atomic_t opd_async_updates_count;
275 * Limit the object allocation using ENOSPC for opd_pre_status
277 int opd_reserved_mb_high;
278 int opd_reserved_mb_low;
281 #define opd_pre_used_fid opd_pre->osp_pre_used_fid
282 #define opd_pre_last_created_fid opd_pre->osp_pre_last_created_fid
283 #define opd_pre_reserved opd_pre->osp_pre_reserved
284 #define opd_pre_user_waitq opd_pre->osp_pre_user_waitq
285 #define opd_pre_status opd_pre->osp_pre_status
286 #define opd_pre_create_count opd_pre->osp_pre_create_count
287 #define opd_pre_min_create_count opd_pre->osp_pre_min_create_count
288 #define opd_pre_max_create_count opd_pre->osp_pre_max_create_count
289 #define opd_pre_create_slow opd_pre->osp_pre_create_slow
290 #define opd_pre_recovering opd_pre->osp_pre_recovering
292 extern struct kmem_cache *osp_object_kmem;
294 /* The first part of oxe_buf is xattr name, and is '\0' terminated.
295 * The left part is for value, binary mode. */
296 struct osp_xattr_entry {
297 struct list_head oxe_list;
303 unsigned int oxe_exist:1,
308 /* this is a top object */
310 struct lu_object_header opo_header;
311 struct dt_object opo_obj;
312 unsigned int opo_reserved:1,
316 /* read/write lock for md osp object */
317 struct rw_semaphore opo_sem;
318 const struct lu_env *opo_owner;
319 struct lu_attr opo_attr;
320 struct list_head opo_xattr_list;
321 struct list_head opo_invalidate_cb_list;
322 /* Protect opo_ooa. */
324 /* to implement in-flight invalidation */
325 atomic_t opo_invalidate_seq;
326 struct rw_semaphore opo_invalidate_sem;
329 extern struct lu_object_operations osp_lu_obj_ops;
330 extern const struct dt_device_operations osp_dt_ops;
331 extern struct dt_object_operations osp_md_obj_ops;
332 extern struct dt_body_operations osp_md_body_ops;
334 struct osp_thread_info {
335 struct lu_buf osi_lb;
336 struct lu_buf osi_lb2;
337 struct lu_fid osi_fid;
338 struct lu_attr osi_attr;
339 struct ost_id osi_oi;
340 struct ost_id osi_oi2;
343 struct llog_rec_hdr osi_hdr;
344 struct llog_unlink64_rec osi_unlink;
345 struct llog_setattr64_rec_v2 osi_setattr;
346 struct llog_gen_rec osi_gen;
348 struct llog_cookie osi_cookie;
349 struct llog_catid osi_cid;
350 struct lu_seq_range osi_seq;
351 struct ldlm_res_id osi_resid;
352 struct obdo osi_obdo;
355 /* Iterator for OSP */
358 __u32 ooi_pos_lu_page;
362 int ooi_total_npages;
363 int ooi_valid_npages;
364 unsigned int ooi_swab:1;
366 struct dt_object *ooi_obj;
368 struct page *ooi_cur_page;
369 struct lu_idxpage *ooi_cur_idxpage;
370 struct page **ooi_pages;
373 #define OSP_THANDLE_MAGIC 0x20141214
375 struct thandle ot_super;
377 /* OSP will use this thandle to update last oid*/
378 struct thandle *ot_storage_th;
380 struct list_head ot_commit_dcb_list;
381 struct list_head ot_stop_dcb_list;
382 struct osp_update_request *ot_our;
383 atomic_t ot_refcount;
386 static inline struct osp_thandle *
387 thandle_to_osp_thandle(struct thandle *th)
389 return container_of(th, struct osp_thandle, ot_super);
392 static inline struct osp_update_request *
393 thandle_to_osp_update_request(struct thandle *th)
395 struct osp_thandle *oth;
397 oth = thandle_to_osp_thandle(th);
401 /* The transaction only include the updates on the remote node, and
402 * no local updates at all */
403 static inline bool is_only_remote_trans(struct thandle *th)
405 return th->th_top == NULL;
408 static inline void osp_objid_buf_prep(struct lu_buf *buf, loff_t *off,
409 __u64 *id, int index)
411 /* Note: through id is only 32 bits, it will also write 64 bits
412 * for oid to keep compatibility with the previous version. */
413 buf->lb_buf = (void *)id;
414 buf->lb_len = sizeof(u64);
415 *off = sizeof(u64) * index;
418 static inline void osp_objseq_buf_prep(struct lu_buf *buf, loff_t *off,
419 __u64 *seq, int index)
421 buf->lb_buf = (void *)seq;
422 buf->lb_len = sizeof(u64);
423 *off = sizeof(u64) * index;
426 static inline void osp_buf_prep(struct lu_buf *lb, void *buf, int buf_len)
429 lb->lb_len = buf_len;
432 extern struct lu_context_key osp_thread_key;
434 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
436 return lu_env_info(env, &osp_thread_key);
439 struct osp_txn_info {
440 __u64 oti_current_id;
443 extern struct lu_context_key osp_txn_key;
445 static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx)
447 struct osp_txn_info *info;
449 info = lu_context_key_get(ctx, &osp_txn_key);
453 extern const struct lu_device_operations osp_lu_ops;
455 static inline int lu_device_is_osp(struct lu_device *d)
457 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops);
460 static inline struct osp_device *lu2osp_dev(struct lu_device *d)
462 LASSERT(lu_device_is_osp(d));
463 return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev);
466 static inline struct lu_device *osp2lu_dev(struct osp_device *d)
468 return &d->opd_dt_dev.dd_lu_dev;
471 static inline struct osp_device *dt2osp_dev(struct dt_device *d)
473 LASSERT(lu_device_is_osp(&d->dd_lu_dev));
474 return container_of0(d, struct osp_device, opd_dt_dev);
477 static inline struct osp_object *lu2osp_obj(struct lu_object *o)
479 LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev)));
480 return container_of0(o, struct osp_object, opo_obj.do_lu);
483 static inline struct lu_object *osp2lu_obj(struct osp_object *obj)
485 return &obj->opo_obj.do_lu;
488 static inline struct osp_object *osp_obj(const struct lu_object *o)
490 LASSERT(lu_device_is_osp(o->lo_dev));
491 return container_of0(o, struct osp_object, opo_obj.do_lu);
494 static inline struct osp_object *dt2osp_obj(const struct dt_object *d)
496 return osp_obj(&d->do_lu);
499 static inline struct dt_object *osp_object_child(struct osp_object *o)
501 return container_of(lu_object_next(osp2lu_obj(o)),
502 struct dt_object, do_lu);
505 static inline struct seq_server_site *osp_seq_site(struct osp_device *osp)
507 return osp->opd_dt_dev.dd_lu_dev.ld_site->ld_seq_site;
511 * Serializes in-flight MDT-modifying RPC requests to preserve idempotency.
513 * This mutex is used to implement execute-once semantics on the MDT.
514 * The MDT stores the last transaction ID and result for every client in
515 * its last_rcvd file. If the client doesn't get a reply, it can safely
516 * resend the request and the MDT will reconstruct the reply being aware
517 * that the request has already been executed. Without this lock,
518 * execution status of concurrent in-flight requests would be
521 * This imlpementation limits the extent to which we can keep a full pipeline
522 * of in-flight requests from a single client. This limitation can be
523 * overcome by allowing multiple slots per client in the last_rcvd file,
526 #define OSP_FAKE_RPCL_IT ((void *)0x2c0012bfUL)
528 static inline void osp_init_rpc_lock(struct osp_device *osp)
530 struct osp_rpc_lock *lck = &osp->opd_rpc_lock;
532 mutex_init(&lck->rpcl_mutex);
536 static inline void osp_get_rpc_lock(struct osp_device *osp)
538 struct osp_rpc_lock *lck = &osp->opd_rpc_lock;
540 /* This would normally block until the existing request finishes.
541 * If fail_loc is set it will block until the regular request is
542 * done, then increment rpcl_fakes. Once that is non-zero it
543 * will only be cleared when all fake requests are finished.
544 * Only when all fake requests are finished can normal requests
545 * be sent, to ensure they are recoverable again.
548 mutex_lock(&lck->rpcl_mutex);
550 if (CFS_FAIL_CHECK_QUIET(OBD_FAIL_MDC_RPCS_SEM) ||
551 CFS_FAIL_CHECK_QUIET(OBD_FAIL_OSP_RPCS_SEM)) {
553 mutex_unlock(&lck->rpcl_mutex);
558 /* This will only happen when the CFS_FAIL_CHECK() was just turned
559 * off but there are still requests in progress. Wait until they
560 * finish. It doesn't need to be efficient in this extremely rare
561 * case, just have low overhead in the common case when it isn't true.
563 if (unlikely(lck->rpcl_fakes)) {
564 mutex_unlock(&lck->rpcl_mutex);
565 schedule_timeout_uninterruptible(cfs_time_seconds(1) / 4);
571 static inline void osp_put_rpc_lock(struct osp_device *osp)
573 struct osp_rpc_lock *lck = &osp->opd_rpc_lock;
575 if (lck->rpcl_fakes) { /* OBD_FAIL_OSP_RPCS_SEM */
576 mutex_lock(&lck->rpcl_mutex);
578 if (lck->rpcl_fakes) /* check again under lock */
582 mutex_unlock(&lck->rpcl_mutex);
585 static inline int osp_fid_diff(const struct lu_fid *fid1,
586 const struct lu_fid *fid2)
588 /* In 2.6+ ost_idx is packed into IDIF FID, while in 2.4 and 2.5 IDIF
589 * is always FID_SEQ_IDIF(0x100000000ULL), which does not include OST
590 * index in the seq. So we can not compare IDIF FID seq here */
591 if (fid_is_idif(fid1) && fid_is_idif(fid2)) {
592 __u32 ost_idx1 = fid_idif_ost_idx(fid1);
593 __u32 ost_idx2 = fid_idif_ost_idx(fid2);
595 LASSERTF(ost_idx1 == 0 || ost_idx2 == 0 || ost_idx1 == ost_idx2,
596 "fid1: "DFID", fid2: "DFID"\n", PFID(fid1),
599 return fid_idif_id(fid1->f_seq, fid1->f_oid, 0) -
600 fid_idif_id(fid2->f_seq, fid2->f_oid, 0);
603 LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:"DFID", fid2:"DFID"\n",
604 PFID(fid1), PFID(fid2));
606 return fid_oid(fid1) - fid_oid(fid2);
609 static inline void osp_fid_to_obdid(struct lu_fid *last_fid, u64 *osi_id)
611 if (fid_is_idif((last_fid)))
612 *osi_id = fid_idif_id(fid_seq(last_fid), fid_oid(last_fid),
615 *osi_id = fid_oid(last_fid);
618 static inline void osp_update_last_fid(struct osp_device *d, struct lu_fid *fid)
620 int diff = osp_fid_diff(fid, &d->opd_last_used_fid);
621 struct lu_fid *gap_start = &d->opd_gap_start_fid;
624 * we might have lost precreated objects due to VBR and precreate
625 * orphans, the gap in objid can be calculated properly only here
629 d->opd_gap_start_fid = d->opd_last_used_fid;
630 if (fid_oid(gap_start) == LUSTRE_DATA_SEQ_MAX_WIDTH) {
632 gap_start->f_oid = fid_is_idif(gap_start) ?
637 d->opd_gap_count = diff - 1;
638 CDEBUG(D_HA, "Gap in objids: start="DFID", count =%d\n",
639 PFID(&d->opd_gap_start_fid), d->opd_gap_count);
641 d->opd_last_used_fid = *fid;
642 osp_fid_to_obdid(fid, &d->opd_last_id);
646 static int osp_fid_end_seq(const struct lu_env *env, struct lu_fid *fid)
648 if (fid_is_idif(fid)) {
649 struct osp_thread_info *info = osp_env_info(env);
650 struct ost_id *oi = &info->osi_oi;
652 fid_to_ostid(fid, oi);
653 return ostid_id(oi) == IDIF_MAX_OID;
655 return fid_oid(fid) == LUSTRE_DATA_SEQ_MAX_WIDTH;
659 static inline int osp_precreate_end_seq_nolock(const struct lu_env *env,
660 struct osp_device *osp)
662 struct lu_fid *fid = &osp->opd_pre_last_created_fid;
664 return osp_fid_end_seq(env, fid);
667 static inline int osp_precreate_end_seq(const struct lu_env *env,
668 struct osp_device *osp)
672 spin_lock(&osp->opd_pre_lock);
673 rc = osp_precreate_end_seq_nolock(env, osp);
674 spin_unlock(&osp->opd_pre_lock);
678 static inline int osp_is_fid_client(struct osp_device *osp)
680 struct obd_import *imp = osp->opd_obd->u.cli.cl_import;
682 return imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_FID;
685 struct object_update *
686 update_buffer_get_update(struct object_update_request *request,
689 int osp_extend_update_buffer(const struct lu_env *env,
690 struct osp_update_request *our);
692 struct osp_update_request_sub *
693 osp_current_object_update_request(struct osp_update_request *our);
695 int osp_object_update_request_create(struct osp_update_request *our,
698 #define OSP_UPDATE_RPC_PACK(env, out_something_pack, our, ...) \
700 struct object_update *object_update; \
701 size_t max_update_length; \
702 struct osp_update_request_sub *ours; \
706 ours = osp_current_object_update_request(our); \
707 LASSERT(ours != NULL); \
708 max_update_length = ours->ours_req_size - \
709 object_update_request_size(ours->ours_req); \
711 object_update = update_buffer_get_update(ours->ours_req,\
712 ours->ours_req->ourq_count); \
713 ret = out_something_pack(env, object_update, \
714 &max_update_length, \
716 if (ret == -E2BIG) { \
718 /* Create new object update request */ \
719 rc1 = osp_object_update_request_create(our, \
720 max_update_length + \
721 offsetof(struct object_update_request, \
722 ourq_updates[0]) + 1); \
730 ours->ours_req->ourq_count++; \
731 (our)->our_update_nr++; \
732 object_update->ou_batchid = \
734 object_update->ou_flags |= \
743 typedef int (*osp_update_interpreter_t)(const struct lu_env *env,
744 struct object_update_reply *rep,
745 struct ptlrpc_request *req,
746 struct osp_object *obj,
747 void *data, int index, int rc);
750 void osp_update_last_id(struct osp_device *d, u64 objid);
753 int osp_insert_async_request(const struct lu_env *env, enum update_type op,
754 struct osp_object *obj, int count, __u16 *lens,
755 const void **bufs, void *data, __u32 repsize,
756 osp_update_interpreter_t interpreter);
758 int osp_unplug_async_request(const struct lu_env *env,
759 struct osp_device *osp,
760 struct osp_update_request *update);
761 int osp_trans_update_request_create(struct thandle *th);
762 struct thandle *osp_trans_create(const struct lu_env *env,
763 struct dt_device *d);
764 int osp_trans_start(const struct lu_env *env, struct dt_device *dt,
766 int osp_insert_update_callback(const struct lu_env *env,
767 struct osp_update_request *update,
768 struct osp_object *obj, void *data,
769 osp_update_interpreter_t interpreter);
771 struct osp_update_request *osp_update_request_create(struct dt_device *dt);
772 void osp_update_request_destroy(const struct lu_env *env,
773 struct osp_update_request *update);
775 int osp_send_update_thread(void *arg);
776 int osp_check_and_set_rpc_version(struct osp_thandle *oth,
777 struct osp_object *obj);
779 void osp_thandle_destroy(const struct lu_env *env, struct osp_thandle *oth);
780 static inline void osp_thandle_get(struct osp_thandle *oth)
782 atomic_inc(&oth->ot_refcount);
785 static inline void osp_thandle_put(const struct lu_env *env,
786 struct osp_thandle *oth)
788 if (atomic_dec_and_test(&oth->ot_refcount))
789 osp_thandle_destroy(env, oth);
792 int osp_prep_update_req(const struct lu_env *env, struct obd_import *imp,
793 struct osp_update_request *our,
794 struct ptlrpc_request **reqp);
795 int osp_remote_sync(const struct lu_env *env, struct osp_device *osp,
796 struct osp_update_request *update,
797 struct ptlrpc_request **reqp);
799 struct thandle *osp_get_storage_thandle(const struct lu_env *env,
801 struct osp_device *osp);
802 void osp_trans_callback(const struct lu_env *env,
803 struct osp_thandle *oth, int rc);
804 void osp_invalidate_request(struct osp_device *osp);
806 int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
807 struct lu_attr *attr);
808 int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
809 struct lu_buf *buf, const char *name);
810 int osp_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
811 const struct lu_buf *buf, const char *name,
812 int flag, struct thandle *th);
813 int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
814 const struct lu_buf *buf, const char *name, int fl,
816 int osp_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
817 const char *name, struct thandle *th);
818 int osp_xattr_del(const struct lu_env *env, struct dt_object *dt,
819 const char *name, struct thandle *th);
820 int osp_invalidate(const struct lu_env *env, struct dt_object *dt);
821 void osp_obj_invalidate_cache(struct osp_object *obj);
823 int osp_trans_stop(const struct lu_env *env, struct dt_device *dt,
825 int osp_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb);
827 struct dt_it *osp_it_init(const struct lu_env *env, struct dt_object *dt,
829 void osp_it_fini(const struct lu_env *env, struct dt_it *di);
830 int osp_it_get(const struct lu_env *env, struct dt_it *di,
831 const struct dt_key *key);
832 void osp_it_put(const struct lu_env *env, struct dt_it *di);
833 __u64 osp_it_store(const struct lu_env *env, const struct dt_it *di);
834 int osp_it_key_rec(const struct lu_env *env, const struct dt_it *di,
836 int osp_it_next_page(const struct lu_env *env, struct dt_it *di);
837 /* osp_md_object.c */
838 int osp_md_declare_create(const struct lu_env *env, struct dt_object *dt,
839 struct lu_attr *attr, struct dt_allocation_hint *hint,
840 struct dt_object_format *dof, struct thandle *th);
841 int osp_md_create(const struct lu_env *env, struct dt_object *dt,
842 struct lu_attr *attr, struct dt_allocation_hint *hint,
843 struct dt_object_format *dof, struct thandle *th);
844 int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
845 const struct lu_attr *attr, struct thandle *th);
846 int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
847 const struct lu_attr *attr, struct thandle *th);
848 extern const struct dt_index_operations osp_md_index_ops;
850 /* osp_precreate.c */
851 int osp_init_precreate(struct osp_device *d);
852 int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
853 __u64 osp_precreate_get_id(struct osp_device *d);
854 int osp_precreate_get_fid(const struct lu_env *env, struct osp_device *d,
856 void osp_precreate_fini(struct osp_device *d);
857 int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
858 void osp_pre_update_status(struct osp_device *d, int rc);
859 void osp_statfs_need_now(struct osp_device *d);
860 int osp_reset_last_used(const struct lu_env *env, struct osp_device *osp);
861 int osp_write_last_oid_seq_files(struct lu_env *env, struct osp_device *osp,
862 struct lu_fid *fid, int sync);
863 int osp_init_pre_fid(struct osp_device *osp);
864 int osp_init_statfs(struct osp_device *osp);
865 void osp_fini_statfs(struct osp_device *osp);
866 void osp_statfs_fini(struct osp_device *d);
869 void osp_tunables_init(struct osp_device *osp);
870 void osp_tunables_fini(struct osp_device *osp);
873 int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
874 enum llog_op_type type, struct thandle *th);
875 int osp_sync_add(const struct lu_env *env, struct osp_object *o,
876 enum llog_op_type type, struct thandle *th,
877 const struct lu_attr *attr);
878 int osp_sync_init(const struct lu_env *env, struct osp_device *d);
879 int osp_sync_fini(struct osp_device *d);
880 void osp_sync_check_for_work(struct osp_device *osp);
881 void osp_sync_force(const struct lu_env *env, struct osp_device *d);
882 int osp_sync_add_commit_cb_1s(const struct lu_env *env, struct osp_device *d,
886 extern const struct obd_ops lwp_obd_device_ops;
887 extern struct lu_device_type lwp_device_type;
889 static inline struct lu_device *osp2top(const struct osp_device *osp)
891 return osp->opd_dt_dev.dd_lu_dev.ld_site->ls_top_dev;
894 static inline void osp_set_req_replay(const struct osp_device *osp,
895 struct ptlrpc_request *req)
897 struct obd_device *obd = osp2top(osp)->ld_obd;
899 /* The RPC must be recovery related for the cases:
901 * 1. sent during recovery, or
902 * 2. sent before the recovery thread target_recovery_thread() start,
903 * such as triggered by lod_sub_recovery_thread(). */
904 if (obd->obd_recovering || (obd->obd_replayable && obd->obd_no_conn))
905 req->rq_allow_replay = 1;