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LU-5814 obd: rename obd_unpackmd() to md_unpackmd()
[fs/lustre-release.git] / lustre / obdclass / lprocfs_status_server.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
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.
9  *
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).
15  *
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.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * GPL HEADER END
21  */
22 /*
23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Use is subject to license terms.
25  *
26  * Copyright (c) 2011, 2014, Intel Corporation.
27  */
28 /*
29  * This file is part of Lustre, http://www.lustre.org/
30  * Lustre is a trademark of Sun Microsystems, Inc.
31  *
32  * lustre/obdclass/lprocfs_status_server.c
33  */
34
35 #define DEBUG_SUBSYSTEM S_CLASS
36
37
38 #include <obd_class.h>
39 #include <lprocfs_status.h>
40 #include <lustre/lustre_idl.h>
41 #include <lustre_nodemap.h>
42
43 #ifdef CONFIG_PROC_FS
44
45 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
46 {
47         struct obd_device *obd = PDE_DATA(f->f_path.dentry->d_inode);
48
49         atomic_inc(&obd->obd_evict_inprogress);
50         return 0;
51 }
52
53 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
54 {
55         struct obd_device *obd = PDE_DATA(f->f_path.dentry->d_inode);
56
57         atomic_dec(&obd->obd_evict_inprogress);
58         wake_up(&obd->obd_evict_inprogress_waitq);
59
60         return 0;
61 }
62
63 #define BUFLEN (UUID_MAX + 5)
64
65 ssize_t
66 lprocfs_evict_client_seq_write(struct file *file, const char *buffer,
67                                size_t count, loff_t *off)
68 {
69         struct seq_file *m = file->private_data;
70         struct obd_device *obd = m->private;
71         char *tmpbuf, *kbuf;
72
73         OBD_ALLOC(kbuf, BUFLEN);
74         if (kbuf == NULL)
75                 return -ENOMEM;
76
77         /*
78          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
79          * bytes into kbuf, to ensure that the string is NUL-terminated.
80          * UUID_MAX should include a trailing NUL already.
81          */
82         if (copy_from_user(kbuf, buffer,
83                            min_t(unsigned long, BUFLEN - 1, count))) {
84                 count = -EFAULT;
85                 goto out;
86         }
87         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
88         class_incref(obd, __func__, current);
89
90         if (strncmp(tmpbuf, "nid:", 4) == 0)
91                 obd_export_evict_by_nid(obd, tmpbuf + 4);
92         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
93                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
94         else
95                 obd_export_evict_by_uuid(obd, tmpbuf);
96
97         class_decref(obd, __func__, current);
98
99 out:
100         OBD_FREE(kbuf, BUFLEN);
101         return count;
102 }
103 EXPORT_SYMBOL(lprocfs_evict_client_seq_write);
104
105 #undef BUFLEN
106
107 int lprocfs_num_exports_seq_show(struct seq_file *m, void *data)
108 {
109         struct obd_device *obd = data;
110
111         LASSERT(obd != NULL);
112         return seq_printf(m, "%u\n", obd->obd_num_exports);
113 }
114 EXPORT_SYMBOL(lprocfs_num_exports_seq_show);
115
116 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
117 {
118         CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
119                client_stat->nid_proc, client_stat->nid_stats);
120
121         LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
122                  "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
123                  atomic_read(&client_stat->nid_exp_ref_count));
124
125         if (client_stat->nid_proc)
126                 lprocfs_remove(&client_stat->nid_proc);
127
128         if (client_stat->nid_stats)
129                 lprocfs_free_stats(&client_stat->nid_stats);
130
131         if (client_stat->nid_ldlm_stats)
132                 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
133
134         OBD_FREE_PTR(client_stat);
135         return;
136 }
137
138 void lprocfs_free_per_client_stats(struct obd_device *obd)
139 {
140         struct cfs_hash *hash = obd->obd_nid_stats_hash;
141         struct nid_stat *stat;
142         ENTRY;
143
144         /* we need extra list - because hash_exit called to early */
145         /* not need locking because all clients is died */
146         while (!list_empty(&obd->obd_nid_stats)) {
147                 stat = list_entry(obd->obd_nid_stats.next,
148                                   struct nid_stat, nid_list);
149                 list_del_init(&stat->nid_list);
150                 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
151                 lprocfs_free_client_stats(stat);
152         }
153         EXIT;
154 }
155 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
156
157 static int
158 lprocfs_exp_print_uuid_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
159                            struct hlist_node *hnode, void *cb_data)
160 {
161         struct seq_file *m = cb_data;
162         struct obd_export *exp = cfs_hash_object(hs, hnode);
163
164         if (exp->exp_nid_stats != NULL)
165                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
166         return 0;
167 }
168
169 static int
170 lprocfs_exp_print_nodemap_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
171                               struct hlist_node *hnode, void *cb_data)
172 {
173         struct seq_file *m = cb_data;
174         struct obd_export *exp = cfs_hash_object(hs, hnode);
175         struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
176
177         if (nodemap != NULL)
178                 seq_printf(m, "%s\n", nodemap->nm_name);
179         return 0;
180 }
181
182 static int
183 lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
184 {
185         struct nid_stat *stats = m->private;
186         struct obd_device *obd = stats->nid_obd;
187
188         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
189                               lprocfs_exp_print_nodemap_seq, m);
190         return 0;
191 }
192 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
193
194 static int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
195 {
196         struct nid_stat *stats = m->private;
197         struct obd_device *obd = stats->nid_obd;
198
199         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
200                                 lprocfs_exp_print_uuid_seq, m);
201         return 0;
202 }
203 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
204
205 static int
206 lprocfs_exp_print_hash_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
207                            struct hlist_node *hnode, void *cb_data)
208
209 {
210         struct seq_file *m = cb_data;
211         struct obd_export *exp = cfs_hash_object(hs, hnode);
212
213         if (exp->exp_lock_hash != NULL) {
214                 cfs_hash_debug_header(m);
215                 cfs_hash_debug_str(hs, m);
216         }
217         return 0;
218 }
219
220 static int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
221 {
222         struct nid_stat *stats = m->private;
223         struct obd_device *obd = stats->nid_obd;
224
225         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
226                                 lprocfs_exp_print_hash_seq, m);
227         return 0;
228 }
229 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
230
231 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
232 {
233         return seq_printf(m, "%s\n", "Write into this file to clear all nid "
234                           "stats and stale nid entries");
235 }
236 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
237
238 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
239 {
240         struct nid_stat *stat = obj;
241         ENTRY;
242
243         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
244         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
245                 /* object has only hash references. */
246                 spin_lock(&stat->nid_obd->obd_nid_lock);
247                 list_move(&stat->nid_list, data);
248                 spin_unlock(&stat->nid_obd->obd_nid_lock);
249                 RETURN(1);
250         }
251         /* we has reference to object - only clear data*/
252         if (stat->nid_stats)
253                 lprocfs_clear_stats(stat->nid_stats);
254
255         RETURN(0);
256 }
257
258 ssize_t
259 lprocfs_nid_stats_clear_seq_write(struct file *file, const char *buffer,
260                                         size_t count, loff_t *off)
261 {
262         struct seq_file *m = file->private_data;
263         struct obd_device *obd = m->private;
264         struct nid_stat *client_stat;
265         struct list_head free_list;
266
267         INIT_LIST_HEAD(&free_list);
268         cfs_hash_cond_del(obd->obd_nid_stats_hash,
269                           lprocfs_nid_stats_clear_write_cb, &free_list);
270
271         while (!list_empty(&free_list)) {
272                 client_stat = list_entry(free_list.next, struct nid_stat,
273                                          nid_list);
274                 list_del_init(&client_stat->nid_list);
275                 lprocfs_free_client_stats(client_stat);
276         }
277         return count;
278 }
279 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
280
281 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
282 {
283         struct nid_stat *new_stat, *old_stat;
284         struct obd_device *obd = NULL;
285         struct proc_dir_entry *entry;
286         char nidstr[LNET_NIDSTR_SIZE];
287         int rc = 0;
288         ENTRY;
289
290         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
291             !exp->exp_obd->obd_nid_stats_hash)
292                 RETURN(-EINVAL);
293
294         /* not test against zero because eric say:
295          * You may only test nid against another nid, or LNET_NID_ANY.
296          * Anything else is nonsense.*/
297         if (nid == NULL || *nid == LNET_NID_ANY)
298                 RETURN(-EALREADY);
299
300         libcfs_nid2str_r(*nid, nidstr, sizeof(nidstr));
301
302         spin_lock(&exp->exp_lock);
303         if (exp->exp_nid_stats != NULL) {
304                 spin_unlock(&exp->exp_lock);
305                 RETURN(-EALREADY);
306         }
307         spin_unlock(&exp->exp_lock);
308
309         obd = exp->exp_obd;
310
311         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
312
313         OBD_ALLOC_PTR(new_stat);
314         if (new_stat == NULL)
315                 RETURN(-ENOMEM);
316
317         new_stat->nid     = *nid;
318         new_stat->nid_obd = exp->exp_obd;
319         /* we need set default refcount to 1 to balance obd_disconnect */
320         atomic_set(&new_stat->nid_exp_ref_count, 1);
321
322         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
323                                            nid, &new_stat->nid_hash);
324         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
325                old_stat, nidstr, atomic_read(&old_stat->nid_exp_ref_count));
326
327         /* Return -EALREADY here so that we know that the /proc
328          * entry already has been created */
329         if (old_stat != new_stat) {
330                 spin_lock(&exp->exp_lock);
331                 if (exp->exp_nid_stats) {
332                         LASSERT(exp->exp_nid_stats == old_stat);
333                         nidstat_putref(exp->exp_nid_stats);
334                 }
335                 exp->exp_nid_stats = old_stat;
336                 spin_unlock(&exp->exp_lock);
337                 GOTO(destroy_new, rc = -EALREADY);
338         }
339         /* not found - create */
340         new_stat->nid_proc = lprocfs_register(nidstr,
341                                               obd->obd_proc_exports_entry,
342                                               NULL, NULL);
343
344         if (IS_ERR(new_stat->nid_proc)) {
345                 rc = PTR_ERR(new_stat->nid_proc);
346                 new_stat->nid_proc = NULL;
347                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
348                        obd->obd_name, nidstr, rc);
349                 GOTO(destroy_new_ns, rc);
350         }
351
352         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
353                                    &lprocfs_exp_nodemap_fops);
354         if (IS_ERR(entry)) {
355                 rc = PTR_ERR(entry);
356                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
357                 GOTO(destroy_new_ns, rc);
358         }
359
360         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
361                                    &lprocfs_exp_uuid_fops);
362         if (IS_ERR(entry)) {
363                 rc = PTR_ERR(entry);
364                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
365                 GOTO(destroy_new_ns, rc);
366         }
367
368         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
369                                    &lprocfs_exp_hash_fops);
370         if (IS_ERR(entry)) {
371                 rc = PTR_ERR(entry);
372                 CWARN("Error adding the hash file: rc = %d\n", rc);
373                 GOTO(destroy_new_ns, rc);
374         }
375
376         spin_lock(&exp->exp_lock);
377         exp->exp_nid_stats = new_stat;
378         spin_unlock(&exp->exp_lock);
379
380         /* protect competitive add to list, not need locking on destroy */
381         spin_lock(&obd->obd_nid_lock);
382         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
383         spin_unlock(&obd->obd_nid_lock);
384
385         RETURN(0);
386
387 destroy_new_ns:
388         if (new_stat->nid_proc != NULL)
389                 lprocfs_remove(&new_stat->nid_proc);
390         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
391
392 destroy_new:
393         nidstat_putref(new_stat);
394         OBD_FREE_PTR(new_stat);
395         RETURN(rc);
396 }
397 EXPORT_SYMBOL(lprocfs_exp_setup);
398
399 int lprocfs_exp_cleanup(struct obd_export *exp)
400 {
401         struct nid_stat *stat = exp->exp_nid_stats;
402
403         if (!stat || !exp->exp_obd)
404                 RETURN(0);
405
406         nidstat_putref(exp->exp_nid_stats);
407         exp->exp_nid_stats = NULL;
408
409         return 0;
410 }
411
412 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
413 do {                                                            \
414         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
415         LASSERT(coffset < stats->ls_num);                       \
416         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
417 } while (0)
418
419 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
420 {
421         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
422         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
423         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
424         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
425         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
426         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
427         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
428         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
429         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
430         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
431         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
432         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
433         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
434         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
435         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
436         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
437         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
438         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
439         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
440         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
441         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
442         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
443         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
444         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
445         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
446         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
447         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
448         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
449         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
450         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
451         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
452         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
453         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
454         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
455         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
456         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
457         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
458         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
459
460         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
461 }
462 EXPORT_SYMBOL(lprocfs_init_ops_stats);
463
464 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
465 {
466         struct lprocfs_stats *stats;
467         unsigned int num_stats;
468         int rc, i;
469
470         LASSERT(obd->obd_stats == NULL);
471         LASSERT(obd->obd_proc_entry != NULL);
472         LASSERT(obd->obd_cntr_base == 0);
473
474         num_stats = NUM_OBD_STATS + num_private_stats;
475         stats = lprocfs_alloc_stats(num_stats, 0);
476         if (stats == NULL)
477                 return -ENOMEM;
478
479         lprocfs_init_ops_stats(num_private_stats, stats);
480
481         for (i = num_private_stats; i < num_stats; i++) {
482                 /* If this LBUGs, it is likely that an obd
483                  * operation was added to struct obd_ops in
484                  * <obd.h>, and that the corresponding line item
485                  * LPROCFS_OBD_OP_INIT(.., .., opname)
486                  * is missing from the list above. */
487                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
488                          "Missing obd_stat initializer obd_op "
489                          "operation at offset %d.\n", i - num_private_stats);
490         }
491         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
492         if (rc < 0) {
493                 lprocfs_free_stats(&stats);
494         } else {
495                 obd->obd_stats  = stats;
496                 obd->obd_cntr_base = num_private_stats;
497         }
498         return rc;
499 }
500 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
501
502 void lprocfs_free_obd_stats(struct obd_device *obd)
503 {
504         if (obd->obd_stats)
505                 lprocfs_free_stats(&obd->obd_stats);
506 }
507 EXPORT_SYMBOL(lprocfs_free_obd_stats);
508
509 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
510 {
511         struct obd_device *obd = m->private;
512         int c = 0;
513
514         if (obd == NULL)
515                 return 0;
516
517         c += cfs_hash_debug_header(m);
518         c += cfs_hash_debug_str(obd->obd_uuid_hash, m);
519         c += cfs_hash_debug_str(obd->obd_nid_hash, m);
520         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
521         return c;
522 }
523 EXPORT_SYMBOL(lprocfs_hash_seq_show);
524
525 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
526 {
527         struct obd_device *obd = m->private;
528
529         LASSERT(obd != NULL);
530
531         seq_printf(m, "status: ");
532         if (obd->obd_max_recoverable_clients == 0) {
533                 seq_printf(m, "INACTIVE\n");
534                 goto out;
535         }
536
537         /* sampled unlocked, but really... */
538         if (obd->obd_recovering == 0) {
539                 seq_printf(m, "COMPLETE\n");
540                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
541                 seq_printf(m, "recovery_duration: %lu\n",
542                            obd->obd_recovery_end - obd->obd_recovery_start);
543                 /* Number of clients that have completed recovery */
544                 seq_printf(m, "completed_clients: %d/%d\n",
545                            obd->obd_max_recoverable_clients -
546                            obd->obd_stale_clients,
547                            obd->obd_max_recoverable_clients);
548                 seq_printf(m, "replayed_requests: %d\n",
549                            obd->obd_replayed_requests);
550                 seq_printf(m, "last_transno: "LPD64"\n",
551                            obd->obd_next_recovery_transno - 1);
552                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
553                            "ENABLED" : "DISABLED");
554                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
555                            "DISABLED" : "ENABLED");
556                 goto out;
557         }
558
559         seq_printf(m, "RECOVERING\n");
560         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
561         seq_printf(m, "time_remaining: %lu\n",
562                    cfs_time_current_sec() >=
563                    obd->obd_recovery_start +
564                    obd->obd_recovery_timeout ? 0 :
565                    obd->obd_recovery_start +
566                    obd->obd_recovery_timeout -
567                    cfs_time_current_sec());
568         seq_printf(m, "connected_clients: %d/%d\n",
569                    atomic_read(&obd->obd_connected_clients),
570                    obd->obd_max_recoverable_clients);
571         /* Number of clients that have completed recovery */
572         seq_printf(m, "req_replay_clients: %d\n",
573                    atomic_read(&obd->obd_req_replay_clients));
574         seq_printf(m, "lock_repay_clients: %d\n",
575                    atomic_read(&obd->obd_lock_replay_clients));
576         seq_printf(m, "completed_clients: %d\n",
577                    atomic_read(&obd->obd_connected_clients) -
578                    atomic_read(&obd->obd_lock_replay_clients));
579         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
580         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
581         seq_printf(m, "queued_requests: %d\n",
582                    obd->obd_requests_queued_for_recovery);
583         seq_printf(m, "next_transno: "LPD64"\n",
584                    obd->obd_next_recovery_transno);
585 out:
586         return 0;
587 }
588 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
589
590 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
591 {
592         struct obd_device *obd = m->private;
593
594         LASSERT(obd != NULL);
595         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
596 }
597 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
598
599 ssize_t
600 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
601                             size_t count, loff_t *off)
602 {
603         struct seq_file *m = file->private_data;
604         struct obd_device *obd = m->private;
605         int val, rc;
606
607         LASSERT(obd != NULL);
608         rc = lprocfs_write_helper(buffer, count, &val);
609         if (rc)
610                 return rc;
611
612         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
613                 return -EINVAL;
614
615         obd->obd_recovery_ir_factor = val;
616         return count;
617 }
618 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
619
620 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
621 {
622         struct obd_device *obd = m->private;
623
624         LASSERT(obd != NULL);
625         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
626 }
627 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
628
629 ssize_t
630 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
631                                         size_t count, loff_t *off)
632 {
633         struct seq_file *m = file->private_data;
634         struct obd_device *obd = m->private;
635         int val, rc;
636
637         LASSERT(obd != NULL);
638         rc = lprocfs_write_helper(buffer, count, &val);
639         if (rc)
640                 return rc;
641
642         obd->obd_recovery_timeout = val;
643         return count;
644 }
645 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
646
647 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
648 {
649         struct obd_device *obd = m->private;
650
651         LASSERT(obd != NULL);
652         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
653 }
654 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
655
656 ssize_t
657 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
658                                      size_t count, loff_t *off)
659 {
660         struct seq_file *m = file->private_data;
661         struct obd_device *obd = m->private;
662         int val, rc;
663
664         LASSERT(obd != NULL);
665         rc = lprocfs_write_helper(buffer, count, &val);
666         if (rc)
667                 return rc;
668
669         obd->obd_recovery_time_hard = val;
670         return count;
671 }
672 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
673
674 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
675 {
676         struct obd_device *obd = m->private;
677         struct obd_device_target *target = &obd->u.obt;
678
679         LASSERT(obd != NULL);
680         LASSERT(target->obt_magic == OBT_MAGIC);
681         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
682 }
683 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
684
685 #endif /* CONFIG_PROC_FS*/