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, 2013, 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 #if defined(LPROCFS)
  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 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 obd_export *exp = cfs_hash_object(hs, hnode);
 169         struct seq_file *m = cb_data;
 170
 171         if (exp->exp_nid_stats)
 172                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
 173         return 0;
 174 }
 175
 176 int lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
 177 {
 178         struct obd_export       *exp = m->private;
 179         if (exp->exp_target_data.ted_nodemap)
 180                 return seq_printf(m, "%s\n",
 181                                   exp->exp_target_data.ted_nodemap->nm_name);
 182         return seq_printf(m, "null\n");
 183 }
 184 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
 185
 186 int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
 187 {
 188         struct nid_stat *stats = m->private;
 189         struct obd_device *obd = stats->nid_obd;
 190
 191         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 192                                 lprocfs_exp_print_uuid_seq, m);
 193         return 0;
 194 }
 195 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
 196
 197 int lprocfs_exp_print_hash_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
 198                                 struct hlist_node *hnode, void *cb_data)
 199
 200 {
 201         struct seq_file *m = cb_data;
 202         struct obd_export *exp = cfs_hash_object(hs, hnode);
 203
 204         if (exp->exp_lock_hash != NULL) {
 205                 cfs_hash_debug_header(m);
 206                 cfs_hash_debug_str(hs, m);
 207         }
 208         return 0;
 209 }
 210
 211 int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
 212 {
 213         struct nid_stat *stats = m->private;
 214         struct obd_device *obd = stats->nid_obd;
 215
 216         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 217                                 lprocfs_exp_print_hash_seq, m);
 218         return 0;
 219 }
 220 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
 221
 222 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
 223 {
 224         return seq_printf(m, "%s\n", "Write into this file to clear all nid "
 225                           "stats and stale nid entries");
 226 }
 227 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
 228
 229 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 230 {
 231         struct nid_stat *stat = obj;
 232         ENTRY;
 233
 234         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
 235         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
 236                 /* object has only hash references. */
 237                 spin_lock(&stat->nid_obd->obd_nid_lock);
 238                 list_move(&stat->nid_list, data);
 239                 spin_unlock(&stat->nid_obd->obd_nid_lock);
 240                 RETURN(1);
 241         }
 242         /* we has reference to object - only clear data*/
 243         if (stat->nid_stats)
 244                 lprocfs_clear_stats(stat->nid_stats);
 245
 246         RETURN(0);
 247 }
 248
 249 ssize_t
 250 lprocfs_nid_stats_clear_seq_write(struct file *file, const char *buffer,
 251                                         size_t count, loff_t *off)
 252 {
 253         struct seq_file *m = file->private_data;
 254         struct obd_device *obd = m->private;
 255         struct nid_stat *client_stat;
 256         struct list_head free_list;
 257
 258         INIT_LIST_HEAD(&free_list);
 259         cfs_hash_cond_del(obd->obd_nid_stats_hash,
 260                           lprocfs_nid_stats_clear_write_cb, &free_list);
 261
 262         while (!list_empty(&free_list)) {
 263                 client_stat = list_entry(free_list.next, struct nid_stat,
 264                                          nid_list);
 265                 list_del_init(&client_stat->nid_list);
 266                 lprocfs_free_client_stats(client_stat);
 267         }
 268         return count;
 269 }
 270 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
 271
 272 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
 273 {
 274         struct nid_stat *new_stat, *old_stat;
 275         struct obd_device *obd = NULL;
 276         struct proc_dir_entry *entry;
 277         char *buffer = NULL;
 278         int rc = 0;
 279         ENTRY;
 280
 281         *newnid = 0;
 282
 283         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
 284             !exp->exp_obd->obd_nid_stats_hash)
 285                 RETURN(-EINVAL);
 286
 287         /* not test against zero because eric say:
 288          * You may only test nid against another nid, or LNET_NID_ANY.
 289          * Anything else is nonsense.*/
 290         if (!nid || *nid == LNET_NID_ANY)
 291                 RETURN(0);
 292
 293         spin_lock(&exp->exp_lock);
 294         if (exp->exp_nid_stats != NULL) {
 295                 spin_unlock(&exp->exp_lock);
 296                 RETURN(-EALREADY);
 297         }
 298         spin_unlock(&exp->exp_lock);
 299
 300         obd = exp->exp_obd;
 301
 302         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 303
 304         OBD_ALLOC_PTR(new_stat);
 305         if (new_stat == NULL)
 306                 RETURN(-ENOMEM);
 307
 308         new_stat->nid           = *nid;
 309         new_stat->nid_obd       = exp->exp_obd;
 310         /* we need set default refcount to 1 to balance obd_disconnect */
 311         atomic_set(&new_stat->nid_exp_ref_count, 1);
 312
 313         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
 314                                            nid, &new_stat->nid_hash);
 315         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
 316                old_stat, libcfs_nid2str(*nid),
 317                atomic_read(&new_stat->nid_exp_ref_count));
 318
 319         /* Return -EALREADY here so that we know that the /proc
 320          * entry already has been created */
 321         if (old_stat != new_stat) {
 322                 spin_lock(&exp->exp_lock);
 323                 if (exp->exp_nid_stats) {
 324                         LASSERT(exp->exp_nid_stats == old_stat);
 325                         nidstat_putref(exp->exp_nid_stats);
 326                 }
 327                 exp->exp_nid_stats = old_stat;
 328                 spin_unlock(&exp->exp_lock);
 329                 GOTO(destroy_new, rc = -EALREADY);
 330         }
 331         /* not found - create */
 332         OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
 333         if (buffer == NULL)
 334                 GOTO(destroy_new, rc = -ENOMEM);
 335
 336         memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
 337         new_stat->nid_proc = lprocfs_register(buffer,
 338                                               obd->obd_proc_exports_entry,
 339                                               NULL, NULL);
 340         OBD_FREE(buffer, LNET_NIDSTR_SIZE);
 341
 342         if (IS_ERR(new_stat->nid_proc)) {
 343                 rc = PTR_ERR(new_stat->nid_proc);
 344                 new_stat->nid_proc = NULL;
 345                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 346                        obd->obd_name, libcfs_nid2str(*nid), rc);
 347                 GOTO(destroy_new_ns, rc);
 348         }
 349
 350         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap",
 351                                    exp, &lprocfs_exp_nodemap_fops);
 352         if (IS_ERR(entry)) {
 353                 rc = PTR_ERR(entry);
 354                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
 355                 GOTO(destroy_new_ns, rc);
 356         }
 357
 358         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 359                                    &lprocfs_exp_uuid_fops);
 360         if (IS_ERR(entry)) {
 361                 rc = PTR_ERR(entry);
 362                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
 363                 GOTO(destroy_new_ns, rc);
 364         }
 365
 366         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 367                                    &lprocfs_exp_hash_fops);
 368         if (IS_ERR(entry)) {
 369                 rc = PTR_ERR(entry);
 370                 CWARN("Error adding the hash file: rc = %d\n", rc);
 371                 GOTO(destroy_new_ns, rc);
 372         }
 373
 374         spin_lock(&exp->exp_lock);
 375         exp->exp_nid_stats = new_stat;
 376         spin_unlock(&exp->exp_lock);
 377         *newnid = 1;
 378         /* protect competitive add to list, not need locking on destroy */
 379         spin_lock(&obd->obd_nid_lock);
 380         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 381         spin_unlock(&obd->obd_nid_lock);
 382
 383         RETURN(rc);
 384
 385 destroy_new_ns:
 386         if (new_stat->nid_proc != NULL)
 387                 lprocfs_remove(&new_stat->nid_proc);
 388         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 389
 390 destroy_new:
 391         nidstat_putref(new_stat);
 392         OBD_FREE_PTR(new_stat);
 393         RETURN(rc);
 394 }
 395 EXPORT_SYMBOL(lprocfs_exp_setup);
 396
 397 int lprocfs_exp_cleanup(struct obd_export *exp)
 398 {
 399         struct nid_stat *stat = exp->exp_nid_stats;
 400
 401         if (!stat || !exp->exp_obd)
 402                 RETURN(0);
 403
 404         nidstat_putref(exp->exp_nid_stats);
 405         exp->exp_nid_stats = NULL;
 406
 407         return 0;
 408 }
 409 EXPORT_SYMBOL(lprocfs_exp_cleanup);
 410
 411 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 412 do {                                                            \
 413         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 414         LASSERT(coffset < stats->ls_num);                       \
 415         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 416 } while (0)
 417
 418 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 419 {
 420         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 421         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 422         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 423         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 424         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 425         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 426         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 427         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 428         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 429         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 430         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 431         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 432         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 433         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 434         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 435         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 436         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 437         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 438         LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
 439         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
 440         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 441         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 442         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 443         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
 444         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 445         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
 446         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 447         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 448         LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
 449         LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
 450         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 451         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 452         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 453         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 454         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 455         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 456         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
 457         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 458         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 459         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 460         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 461         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 462         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 463         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 464         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 465
 466         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 467 }
 468 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 469
 470 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 471 {
 472         struct lprocfs_stats *stats;
 473         unsigned int num_stats;
 474         int rc, i;
 475
 476         LASSERT(obd->obd_stats == NULL);
 477         LASSERT(obd->obd_proc_entry != NULL);
 478         LASSERT(obd->obd_cntr_base == 0);
 479
 480         num_stats = NUM_OBD_STATS + num_private_stats;
 481         stats = lprocfs_alloc_stats(num_stats, 0);
 482         if (stats == NULL)
 483                 return -ENOMEM;
 484
 485         lprocfs_init_ops_stats(num_private_stats, stats);
 486
 487         for (i = num_private_stats; i < num_stats; i++) {
 488                 /* If this LBUGs, it is likely that an obd
 489                  * operation was added to struct obd_ops in
 490                  * <obd.h>, and that the corresponding line item
 491                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 492                  * is missing from the list above. */
 493                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 494                          "Missing obd_stat initializer obd_op "
 495                          "operation at offset %d.\n", i - num_private_stats);
 496         }
 497         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 498         if (rc < 0) {
 499                 lprocfs_free_stats(&stats);
 500         } else {
 501                 obd->obd_stats  = stats;
 502                 obd->obd_cntr_base = num_private_stats;
 503         }
 504         return rc;
 505 }
 506 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 507
 508 void lprocfs_free_obd_stats(struct obd_device *obd)
 509 {
 510         if (obd->obd_stats)
 511                 lprocfs_free_stats(&obd->obd_stats);
 512 }
 513 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 514
 515 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 516 {
 517         struct obd_device *obd = m->private;
 518         int c = 0;
 519
 520         if (obd == NULL)
 521                 return 0;
 522
 523         c += cfs_hash_debug_header(m);
 524         c += cfs_hash_debug_str(obd->obd_uuid_hash, m);
 525         c += cfs_hash_debug_str(obd->obd_nid_hash, m);
 526         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 527         return c;
 528 }
 529 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 530
 531 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 532 {
 533         struct obd_device *obd = m->private;
 534
 535         LASSERT(obd != NULL);
 536
 537         seq_printf(m, "status: ");
 538         if (obd->obd_max_recoverable_clients == 0) {
 539                 seq_printf(m, "INACTIVE\n");
 540                 goto out;
 541         }
 542
 543         /* sampled unlocked, but really... */
 544         if (obd->obd_recovering == 0) {
 545                 seq_printf(m, "COMPLETE\n");
 546                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 547                 seq_printf(m, "recovery_duration: %lu\n",
 548                            obd->obd_recovery_end - obd->obd_recovery_start);
 549                 /* Number of clients that have completed recovery */
 550                 seq_printf(m, "completed_clients: %d/%d\n",
 551                            obd->obd_max_recoverable_clients -
 552                            obd->obd_stale_clients,
 553                            obd->obd_max_recoverable_clients);
 554                 seq_printf(m, "replayed_requests: %d\n",
 555                            obd->obd_replayed_requests);
 556                 seq_printf(m, "last_transno: "LPD64"\n",
 557                            obd->obd_next_recovery_transno - 1);
 558                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 559                            "ENABLED" : "DISABLED");
 560                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 561                            "DISABLED" : "ENABLED");
 562                 goto out;
 563         }
 564
 565         seq_printf(m, "RECOVERING\n");
 566         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 567         seq_printf(m, "time_remaining: %lu\n",
 568                    cfs_time_current_sec() >=
 569                    obd->obd_recovery_start +
 570                    obd->obd_recovery_timeout ? 0 :
 571                    obd->obd_recovery_start +
 572                    obd->obd_recovery_timeout -
 573                    cfs_time_current_sec());
 574         seq_printf(m, "connected_clients: %d/%d\n",
 575                    atomic_read(&obd->obd_connected_clients),
 576                    obd->obd_max_recoverable_clients);
 577         /* Number of clients that have completed recovery */
 578         seq_printf(m, "req_replay_clients: %d\n",
 579                    atomic_read(&obd->obd_req_replay_clients));
 580         seq_printf(m, "lock_repay_clients: %d\n",
 581                    atomic_read(&obd->obd_lock_replay_clients));
 582         seq_printf(m, "completed_clients: %d\n",
 583                    atomic_read(&obd->obd_connected_clients) -
 584                    atomic_read(&obd->obd_lock_replay_clients));
 585         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 586         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 587         seq_printf(m, "queued_requests: %d\n",
 588                    obd->obd_requests_queued_for_recovery);
 589         seq_printf(m, "next_transno: "LPD64"\n",
 590                    obd->obd_next_recovery_transno);
 591 out:
 592         return 0;
 593 }
 594 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 595
 596 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 597 {
 598         struct obd_device *obd = m->private;
 599
 600         LASSERT(obd != NULL);
 601         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 602 }
 603 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 604
 605 ssize_t
 606 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
 607                             size_t count, loff_t *off)
 608 {
 609         struct seq_file *m = file->private_data;
 610         struct obd_device *obd = m->private;
 611         int val, rc;
 612
 613         LASSERT(obd != NULL);
 614         rc = lprocfs_write_helper(buffer, count, &val);
 615         if (rc)
 616                 return rc;
 617
 618         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 619                 return -EINVAL;
 620
 621         obd->obd_recovery_ir_factor = val;
 622         return count;
 623 }
 624 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 625
 626 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 627 {
 628         struct obd_device *obd = m->private;
 629
 630         LASSERT(obd != NULL);
 631         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
 632 }
 633 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 634
 635 ssize_t
 636 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
 637                                         size_t count, loff_t *off)
 638 {
 639         struct seq_file *m = file->private_data;
 640         struct obd_device *obd = m->private;
 641         int val, rc;
 642
 643         LASSERT(obd != NULL);
 644         rc = lprocfs_write_helper(buffer, count, &val);
 645         if (rc)
 646                 return rc;
 647
 648         obd->obd_recovery_timeout = val;
 649         return count;
 650 }
 651 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 652
 653 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 654 {
 655         struct obd_device *obd = m->private;
 656
 657         LASSERT(obd != NULL);
 658         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
 659 }
 660 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 661
 662 ssize_t
 663 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
 664                                      size_t count, loff_t *off)
 665 {
 666         struct seq_file *m = file->private_data;
 667         struct obd_device *obd = m->private;
 668         int val, rc;
 669
 670         LASSERT(obd != NULL);
 671         rc = lprocfs_write_helper(buffer, count, &val);
 672         if (rc)
 673                 return rc;
 674
 675         obd->obd_recovery_time_hard = val;
 676         return count;
 677 }
 678 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 679
 680 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 681 {
 682         struct obd_device *obd = m->private;
 683         struct obd_device_target *target = &obd->u.obt;
 684
 685         LASSERT(obd != NULL);
 686         LASSERT(target->obt_magic == OBT_MAGIC);
 687         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 688 }
 689 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 690
 691 #endif /* LPROCFS*/