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LU-5275 lprocfs: replace LPROCFS with CONFIG_PROC_FS
[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_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_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         cfs_hash_t *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 int lprocfs_exp_nid_seq_show(struct seq_file *m, void *data)
158 {
159         struct obd_export *exp = m->private;
160         LASSERT(exp != NULL);
161         return seq_printf(m, "%s\n", obd_export_nid2str(exp));
162 }
163
164 static int lprocfs_exp_print_uuid_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
165                                       struct hlist_node *hnode, void *cb_data)
166
167 {
168         struct seq_file *m = cb_data;
169         struct obd_export *exp = cfs_hash_object(hs, hnode);
170
171         if (exp->exp_nid_stats != NULL)
172                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
173         return 0;
174 }
175
176 static int lprocfs_exp_print_nodemap_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
177                                         struct hlist_node *hnode, void *cb_data)
178 {
179         struct seq_file *m = cb_data;
180         struct obd_export *exp = cfs_hash_object(hs, hnode);
181         struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
182
183         if (nodemap != NULL)
184                 seq_printf(m, "%s\n", nodemap->nm_name);
185         return 0;
186 }
187
188 static int lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
189 {
190         struct nid_stat *stats = m->private;
191         struct obd_device *obd = stats->nid_obd;
192
193         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
194                               lprocfs_exp_print_nodemap_seq, m);
195         return 0;
196 }
197 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
198
199 static int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
200 {
201         struct nid_stat *stats = m->private;
202         struct obd_device *obd = stats->nid_obd;
203
204         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
205                                 lprocfs_exp_print_uuid_seq, m);
206         return 0;
207 }
208 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
209
210 static int lprocfs_exp_print_hash_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
211                                       struct hlist_node *hnode, void *cb_data)
212
213 {
214         struct seq_file *m = cb_data;
215         struct obd_export *exp = cfs_hash_object(hs, hnode);
216
217         if (exp->exp_lock_hash != NULL) {
218                 cfs_hash_debug_header(m);
219                 cfs_hash_debug_str(hs, m);
220         }
221         return 0;
222 }
223
224 static int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
225 {
226         struct nid_stat *stats = m->private;
227         struct obd_device *obd = stats->nid_obd;
228
229         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
230                                 lprocfs_exp_print_hash_seq, m);
231         return 0;
232 }
233 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
234
235 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
236 {
237         return seq_printf(m, "%s\n", "Write into this file to clear all nid "
238                           "stats and stale nid entries");
239 }
240 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
241
242 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
243 {
244         struct nid_stat *stat = obj;
245         ENTRY;
246
247         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
248         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
249                 /* object has only hash references. */
250                 spin_lock(&stat->nid_obd->obd_nid_lock);
251                 list_move(&stat->nid_list, data);
252                 spin_unlock(&stat->nid_obd->obd_nid_lock);
253                 RETURN(1);
254         }
255         /* we has reference to object - only clear data*/
256         if (stat->nid_stats)
257                 lprocfs_clear_stats(stat->nid_stats);
258
259         RETURN(0);
260 }
261
262 ssize_t
263 lprocfs_nid_stats_clear_seq_write(struct file *file, const char *buffer,
264                                         size_t count, loff_t *off)
265 {
266         struct seq_file *m = file->private_data;
267         struct obd_device *obd = m->private;
268         struct nid_stat *client_stat;
269         struct list_head free_list;
270
271         INIT_LIST_HEAD(&free_list);
272         cfs_hash_cond_del(obd->obd_nid_stats_hash,
273                           lprocfs_nid_stats_clear_write_cb, &free_list);
274
275         while (!list_empty(&free_list)) {
276                 client_stat = list_entry(free_list.next, struct nid_stat,
277                                          nid_list);
278                 list_del_init(&client_stat->nid_list);
279                 lprocfs_free_client_stats(client_stat);
280         }
281         return count;
282 }
283 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
284
285 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
286 {
287         struct nid_stat *new_stat, *old_stat;
288         struct obd_device *obd = NULL;
289         struct proc_dir_entry *entry;
290         char *buffer = NULL;
291         int rc = 0;
292         ENTRY;
293
294         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
295             !exp->exp_obd->obd_nid_stats_hash)
296                 RETURN(-EINVAL);
297
298         /* not test against zero because eric say:
299          * You may only test nid against another nid, or LNET_NID_ANY.
300          * Anything else is nonsense.*/
301         if (nid == NULL || *nid == LNET_NID_ANY)
302                 RETURN(-EALREADY);
303
304         spin_lock(&exp->exp_lock);
305         if (exp->exp_nid_stats != NULL) {
306                 spin_unlock(&exp->exp_lock);
307                 RETURN(-EALREADY);
308         }
309         spin_unlock(&exp->exp_lock);
310
311         obd = exp->exp_obd;
312
313         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
314
315         OBD_ALLOC_PTR(new_stat);
316         if (new_stat == NULL)
317                 RETURN(-ENOMEM);
318
319         new_stat->nid     = *nid;
320         new_stat->nid_obd = exp->exp_obd;
321         /* we need set default refcount to 1 to balance obd_disconnect */
322         atomic_set(&new_stat->nid_exp_ref_count, 1);
323
324         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
325                                            nid, &new_stat->nid_hash);
326         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
327                old_stat, libcfs_nid2str(*nid),
328                atomic_read(&new_stat->nid_exp_ref_count));
329
330         /* Return -EALREADY here so that we know that the /proc
331          * entry already has been created */
332         if (old_stat != new_stat) {
333                 spin_lock(&exp->exp_lock);
334                 if (exp->exp_nid_stats) {
335                         LASSERT(exp->exp_nid_stats == old_stat);
336                         nidstat_putref(exp->exp_nid_stats);
337                 }
338                 exp->exp_nid_stats = old_stat;
339                 spin_unlock(&exp->exp_lock);
340                 GOTO(destroy_new, rc = -EALREADY);
341         }
342         /* not found - create */
343         OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
344         if (buffer == NULL)
345                 GOTO(destroy_new, rc = -ENOMEM);
346
347         memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
348 #ifndef HAVE_ONLY_PROCFS_SEQ
349         new_stat->nid_proc = lprocfs_register(buffer,
350                                               obd->obd_proc_exports_entry,
351                                               NULL, NULL);
352 #else
353         new_stat->nid_proc = lprocfs_seq_register(buffer,
354                                                   obd->obd_proc_exports_entry,
355                                                   NULL, NULL);
356 #endif
357         OBD_FREE(buffer, LNET_NIDSTR_SIZE);
358
359         if (IS_ERR(new_stat->nid_proc)) {
360                 rc = PTR_ERR(new_stat->nid_proc);
361                 new_stat->nid_proc = NULL;
362                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
363                        obd->obd_name, libcfs_nid2str(*nid), rc);
364                 GOTO(destroy_new_ns, rc);
365         }
366
367         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
368                                    &lprocfs_exp_nodemap_fops);
369         if (IS_ERR(entry)) {
370                 rc = PTR_ERR(entry);
371                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
372                 GOTO(destroy_new_ns, rc);
373         }
374
375         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
376                                    &lprocfs_exp_uuid_fops);
377         if (IS_ERR(entry)) {
378                 rc = PTR_ERR(entry);
379                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
380                 GOTO(destroy_new_ns, rc);
381         }
382
383         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
384                                    &lprocfs_exp_hash_fops);
385         if (IS_ERR(entry)) {
386                 rc = PTR_ERR(entry);
387                 CWARN("Error adding the hash file: rc = %d\n", rc);
388                 GOTO(destroy_new_ns, rc);
389         }
390
391         spin_lock(&exp->exp_lock);
392         exp->exp_nid_stats = new_stat;
393         spin_unlock(&exp->exp_lock);
394
395         /* protect competitive add to list, not need locking on destroy */
396         spin_lock(&obd->obd_nid_lock);
397         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
398         spin_unlock(&obd->obd_nid_lock);
399
400         RETURN(0);
401
402 destroy_new_ns:
403         if (new_stat->nid_proc != NULL)
404                 lprocfs_remove(&new_stat->nid_proc);
405         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
406
407 destroy_new:
408         nidstat_putref(new_stat);
409         OBD_FREE_PTR(new_stat);
410         RETURN(rc);
411 }
412 EXPORT_SYMBOL(lprocfs_exp_setup);
413
414 int lprocfs_exp_cleanup(struct obd_export *exp)
415 {
416         struct nid_stat *stat = exp->exp_nid_stats;
417
418         if (!stat || !exp->exp_obd)
419                 RETURN(0);
420
421         nidstat_putref(exp->exp_nid_stats);
422         exp->exp_nid_stats = NULL;
423
424         return 0;
425 }
426 EXPORT_SYMBOL(lprocfs_exp_cleanup);
427
428 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
429 do {                                                            \
430         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
431         LASSERT(coffset < stats->ls_num);                       \
432         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
433 } while (0)
434
435 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
436 {
437         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
438         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
439         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
440         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
441         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
442         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
443         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
444         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
445         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
446         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
447         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
448         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
449         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
450         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
451         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
452         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
453         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
454         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
455         LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
456         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
457         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
458         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
459         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
460         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
461         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
462         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
463         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
464         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
465         LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
466         LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
467         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
468         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
469         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
470         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
471         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
472         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
473         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
474         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
475         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
476         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
477         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
478         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
479         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
480         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
481         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
482
483         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
484 }
485 EXPORT_SYMBOL(lprocfs_init_ops_stats);
486
487 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
488 {
489         struct lprocfs_stats *stats;
490         unsigned int num_stats;
491         int rc, i;
492
493         LASSERT(obd->obd_stats == NULL);
494         LASSERT(obd->obd_proc_entry != NULL);
495         LASSERT(obd->obd_cntr_base == 0);
496
497         num_stats = NUM_OBD_STATS + num_private_stats;
498         stats = lprocfs_alloc_stats(num_stats, 0);
499         if (stats == NULL)
500                 return -ENOMEM;
501
502         lprocfs_init_ops_stats(num_private_stats, stats);
503
504         for (i = num_private_stats; i < num_stats; i++) {
505                 /* If this LBUGs, it is likely that an obd
506                  * operation was added to struct obd_ops in
507                  * <obd.h>, and that the corresponding line item
508                  * LPROCFS_OBD_OP_INIT(.., .., opname)
509                  * is missing from the list above. */
510                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
511                          "Missing obd_stat initializer obd_op "
512                          "operation at offset %d.\n", i - num_private_stats);
513         }
514         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
515         if (rc < 0) {
516                 lprocfs_free_stats(&stats);
517         } else {
518                 obd->obd_stats  = stats;
519                 obd->obd_cntr_base = num_private_stats;
520         }
521         return rc;
522 }
523 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
524
525 void lprocfs_free_obd_stats(struct obd_device *obd)
526 {
527         if (obd->obd_stats)
528                 lprocfs_free_stats(&obd->obd_stats);
529 }
530 EXPORT_SYMBOL(lprocfs_free_obd_stats);
531
532 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
533 {
534         struct obd_device *obd = m->private;
535         int c = 0;
536
537         if (obd == NULL)
538                 return 0;
539
540         c += cfs_hash_debug_header(m);
541         c += cfs_hash_debug_str(obd->obd_uuid_hash, m);
542         c += cfs_hash_debug_str(obd->obd_nid_hash, m);
543         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
544         return c;
545 }
546 EXPORT_SYMBOL(lprocfs_hash_seq_show);
547
548 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
549 {
550         struct obd_device *obd = m->private;
551
552         LASSERT(obd != NULL);
553
554         seq_printf(m, "status: ");
555         if (obd->obd_max_recoverable_clients == 0) {
556                 seq_printf(m, "INACTIVE\n");
557                 goto out;
558         }
559
560         /* sampled unlocked, but really... */
561         if (obd->obd_recovering == 0) {
562                 seq_printf(m, "COMPLETE\n");
563                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
564                 seq_printf(m, "recovery_duration: %lu\n",
565                            obd->obd_recovery_end - obd->obd_recovery_start);
566                 /* Number of clients that have completed recovery */
567                 seq_printf(m, "completed_clients: %d/%d\n",
568                            obd->obd_max_recoverable_clients -
569                            obd->obd_stale_clients,
570                            obd->obd_max_recoverable_clients);
571                 seq_printf(m, "replayed_requests: %d\n",
572                            obd->obd_replayed_requests);
573                 seq_printf(m, "last_transno: "LPD64"\n",
574                            obd->obd_next_recovery_transno - 1);
575                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
576                            "ENABLED" : "DISABLED");
577                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
578                            "DISABLED" : "ENABLED");
579                 goto out;
580         }
581
582         seq_printf(m, "RECOVERING\n");
583         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
584         seq_printf(m, "time_remaining: %lu\n",
585                    cfs_time_current_sec() >=
586                    obd->obd_recovery_start +
587                    obd->obd_recovery_timeout ? 0 :
588                    obd->obd_recovery_start +
589                    obd->obd_recovery_timeout -
590                    cfs_time_current_sec());
591         seq_printf(m, "connected_clients: %d/%d\n",
592                    atomic_read(&obd->obd_connected_clients),
593                    obd->obd_max_recoverable_clients);
594         /* Number of clients that have completed recovery */
595         seq_printf(m, "req_replay_clients: %d\n",
596                    atomic_read(&obd->obd_req_replay_clients));
597         seq_printf(m, "lock_repay_clients: %d\n",
598                    atomic_read(&obd->obd_lock_replay_clients));
599         seq_printf(m, "completed_clients: %d\n",
600                    atomic_read(&obd->obd_connected_clients) -
601                    atomic_read(&obd->obd_lock_replay_clients));
602         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
603         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
604         seq_printf(m, "queued_requests: %d\n",
605                    obd->obd_requests_queued_for_recovery);
606         seq_printf(m, "next_transno: "LPD64"\n",
607                    obd->obd_next_recovery_transno);
608 out:
609         return 0;
610 }
611 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
612
613 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
614 {
615         struct obd_device *obd = m->private;
616
617         LASSERT(obd != NULL);
618         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
619 }
620 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
621
622 ssize_t
623 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
624                             size_t count, loff_t *off)
625 {
626         struct seq_file *m = file->private_data;
627         struct obd_device *obd = m->private;
628         int val, rc;
629
630         LASSERT(obd != NULL);
631         rc = lprocfs_write_helper(buffer, count, &val);
632         if (rc)
633                 return rc;
634
635         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
636                 return -EINVAL;
637
638         obd->obd_recovery_ir_factor = val;
639         return count;
640 }
641 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
642
643 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
644 {
645         struct obd_device *obd = m->private;
646
647         LASSERT(obd != NULL);
648         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
649 }
650 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
651
652 ssize_t
653 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
654                                         size_t count, loff_t *off)
655 {
656         struct seq_file *m = file->private_data;
657         struct obd_device *obd = m->private;
658         int val, rc;
659
660         LASSERT(obd != NULL);
661         rc = lprocfs_write_helper(buffer, count, &val);
662         if (rc)
663                 return rc;
664
665         obd->obd_recovery_timeout = val;
666         return count;
667 }
668 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
669
670 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
671 {
672         struct obd_device *obd = m->private;
673
674         LASSERT(obd != NULL);
675         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
676 }
677 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
678
679 ssize_t
680 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
681                                      size_t count, loff_t *off)
682 {
683         struct seq_file *m = file->private_data;
684         struct obd_device *obd = m->private;
685         int val, rc;
686
687         LASSERT(obd != NULL);
688         rc = lprocfs_write_helper(buffer, count, &val);
689         if (rc)
690                 return rc;
691
692         obd->obd_recovery_time_hard = val;
693         return count;
694 }
695 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
696
697 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
698 {
699         struct obd_device *obd = m->private;
700         struct obd_device_target *target = &obd->u.obt;
701
702         LASSERT(obd != NULL);
703         LASSERT(target->obt_magic == OBT_MAGIC);
704         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
705 }
706 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
707
708 #endif /* CONFIG_PROC_FS*/