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 static int lprocfs_exp_print_uuid_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
 158                                       struct hlist_node *hnode, void *cb_data)
 159 {
 160         struct seq_file *m = cb_data;
 161         struct obd_export *exp = cfs_hash_object(hs, hnode);
 162
 163         if (exp->exp_nid_stats != NULL)
 164                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
 165         return 0;
 166 }
 167
 168 static int lprocfs_exp_print_nodemap_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
 169                                         struct hlist_node *hnode, void *cb_data)
 170 {
 171         struct seq_file *m = cb_data;
 172         struct obd_export *exp = cfs_hash_object(hs, hnode);
 173         struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
 174
 175         if (nodemap != NULL)
 176                 seq_printf(m, "%s\n", nodemap->nm_name);
 177         return 0;
 178 }
 179
 180 static int lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
 181 {
 182         struct nid_stat *stats = m->private;
 183         struct obd_device *obd = stats->nid_obd;
 184
 185         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 186                               lprocfs_exp_print_nodemap_seq, m);
 187         return 0;
 188 }
 189 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
 190
 191 static int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
 192 {
 193         struct nid_stat *stats = m->private;
 194         struct obd_device *obd = stats->nid_obd;
 195
 196         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 197                                 lprocfs_exp_print_uuid_seq, m);
 198         return 0;
 199 }
 200 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
 201
 202 static int lprocfs_exp_print_hash_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
 203                                       struct hlist_node *hnode, void *cb_data)
 204
 205 {
 206         struct seq_file *m = cb_data;
 207         struct obd_export *exp = cfs_hash_object(hs, hnode);
 208
 209         if (exp->exp_lock_hash != NULL) {
 210                 cfs_hash_debug_header(m);
 211                 cfs_hash_debug_str(hs, m);
 212         }
 213         return 0;
 214 }
 215
 216 static int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
 217 {
 218         struct nid_stat *stats = m->private;
 219         struct obd_device *obd = stats->nid_obd;
 220
 221         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 222                                 lprocfs_exp_print_hash_seq, m);
 223         return 0;
 224 }
 225 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
 226
 227 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
 228 {
 229         return seq_printf(m, "%s\n", "Write into this file to clear all nid "
 230                           "stats and stale nid entries");
 231 }
 232 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
 233
 234 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 235 {
 236         struct nid_stat *stat = obj;
 237         ENTRY;
 238
 239         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
 240         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
 241                 /* object has only hash references. */
 242                 spin_lock(&stat->nid_obd->obd_nid_lock);
 243                 list_move(&stat->nid_list, data);
 244                 spin_unlock(&stat->nid_obd->obd_nid_lock);
 245                 RETURN(1);
 246         }
 247         /* we has reference to object - only clear data*/
 248         if (stat->nid_stats)
 249                 lprocfs_clear_stats(stat->nid_stats);
 250
 251         RETURN(0);
 252 }
 253
 254 ssize_t
 255 lprocfs_nid_stats_clear_seq_write(struct file *file, const char *buffer,
 256                                         size_t count, loff_t *off)
 257 {
 258         struct seq_file *m = file->private_data;
 259         struct obd_device *obd = m->private;
 260         struct nid_stat *client_stat;
 261         struct list_head free_list;
 262
 263         INIT_LIST_HEAD(&free_list);
 264         cfs_hash_cond_del(obd->obd_nid_stats_hash,
 265                           lprocfs_nid_stats_clear_write_cb, &free_list);
 266
 267         while (!list_empty(&free_list)) {
 268                 client_stat = list_entry(free_list.next, struct nid_stat,
 269                                          nid_list);
 270                 list_del_init(&client_stat->nid_list);
 271                 lprocfs_free_client_stats(client_stat);
 272         }
 273         return count;
 274 }
 275 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
 276
 277 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
 278 {
 279         struct nid_stat *new_stat, *old_stat;
 280         struct obd_device *obd = NULL;
 281         struct proc_dir_entry *entry;
 282         char nidstr[LNET_NIDSTR_SIZE];
 283         int rc = 0;
 284         ENTRY;
 285
 286         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
 287             !exp->exp_obd->obd_nid_stats_hash)
 288                 RETURN(-EINVAL);
 289
 290         /* not test against zero because eric say:
 291          * You may only test nid against another nid, or LNET_NID_ANY.
 292          * Anything else is nonsense.*/
 293         if (nid == NULL || *nid == LNET_NID_ANY)
 294                 RETURN(-EALREADY);
 295
 296         libcfs_nid2str_r(*nid, nidstr, sizeof(nidstr));
 297
 298         spin_lock(&exp->exp_lock);
 299         if (exp->exp_nid_stats != NULL) {
 300                 spin_unlock(&exp->exp_lock);
 301                 RETURN(-EALREADY);
 302         }
 303         spin_unlock(&exp->exp_lock);
 304
 305         obd = exp->exp_obd;
 306
 307         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 308
 309         OBD_ALLOC_PTR(new_stat);
 310         if (new_stat == NULL)
 311                 RETURN(-ENOMEM);
 312
 313         new_stat->nid     = *nid;
 314         new_stat->nid_obd = exp->exp_obd;
 315         /* we need set default refcount to 1 to balance obd_disconnect */
 316         atomic_set(&new_stat->nid_exp_ref_count, 1);
 317
 318         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
 319                                            nid, &new_stat->nid_hash);
 320         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
 321                old_stat, nidstr, atomic_read(&old_stat->nid_exp_ref_count));
 322
 323         /* Return -EALREADY here so that we know that the /proc
 324          * entry already has been created */
 325         if (old_stat != new_stat) {
 326                 spin_lock(&exp->exp_lock);
 327                 if (exp->exp_nid_stats) {
 328                         LASSERT(exp->exp_nid_stats == old_stat);
 329                         nidstat_putref(exp->exp_nid_stats);
 330                 }
 331                 exp->exp_nid_stats = old_stat;
 332                 spin_unlock(&exp->exp_lock);
 333                 GOTO(destroy_new, rc = -EALREADY);
 334         }
 335         /* not found - create */
 336         new_stat->nid_proc = lprocfs_register(nidstr,
 337                                               obd->obd_proc_exports_entry,
 338                                               NULL, NULL);
 339
 340         if (IS_ERR(new_stat->nid_proc)) {
 341                 rc = PTR_ERR(new_stat->nid_proc);
 342                 new_stat->nid_proc = NULL;
 343                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 344                        obd->obd_name, nidstr, rc);
 345                 GOTO(destroy_new_ns, rc);
 346         }
 347
 348         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
 349                                    &lprocfs_exp_nodemap_fops);
 350         if (IS_ERR(entry)) {
 351                 rc = PTR_ERR(entry);
 352                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
 353                 GOTO(destroy_new_ns, rc);
 354         }
 355
 356         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 357                                    &lprocfs_exp_uuid_fops);
 358         if (IS_ERR(entry)) {
 359                 rc = PTR_ERR(entry);
 360                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
 361                 GOTO(destroy_new_ns, rc);
 362         }
 363
 364         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 365                                    &lprocfs_exp_hash_fops);
 366         if (IS_ERR(entry)) {
 367                 rc = PTR_ERR(entry);
 368                 CWARN("Error adding the hash file: rc = %d\n", rc);
 369                 GOTO(destroy_new_ns, rc);
 370         }
 371
 372         spin_lock(&exp->exp_lock);
 373         exp->exp_nid_stats = new_stat;
 374         spin_unlock(&exp->exp_lock);
 375
 376         /* protect competitive add to list, not need locking on destroy */
 377         spin_lock(&obd->obd_nid_lock);
 378         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 379         spin_unlock(&obd->obd_nid_lock);
 380
 381         RETURN(0);
 382
 383 destroy_new_ns:
 384         if (new_stat->nid_proc != NULL)
 385                 lprocfs_remove(&new_stat->nid_proc);
 386         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 387
 388 destroy_new:
 389         nidstat_putref(new_stat);
 390         OBD_FREE_PTR(new_stat);
 391         RETURN(rc);
 392 }
 393 EXPORT_SYMBOL(lprocfs_exp_setup);
 394
 395 int lprocfs_exp_cleanup(struct obd_export *exp)
 396 {
 397         struct nid_stat *stat = exp->exp_nid_stats;
 398
 399         if (!stat || !exp->exp_obd)
 400                 RETURN(0);
 401
 402         nidstat_putref(exp->exp_nid_stats);
 403         exp->exp_nid_stats = NULL;
 404
 405         return 0;
 406 }
 407
 408 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 409 do {                                                            \
 410         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 411         LASSERT(coffset < stats->ls_num);                       \
 412         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 413 } while (0)
 414
 415 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 416 {
 417         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 418         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 419         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 420         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 421         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 422         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 423         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 424         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 425         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 426         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 427         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 428         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 429         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 430         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 431         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 432         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 433         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 434         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 435         LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
 436         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
 437         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 438         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 439         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 440         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 441         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 442         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 443         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 444         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 445         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 446         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 447         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 448         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 449         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
 450         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 451         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 452         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 453         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 454         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 455         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 456         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 457         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 458
 459         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 460 }
 461 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 462
 463 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 464 {
 465         struct lprocfs_stats *stats;
 466         unsigned int num_stats;
 467         int rc, i;
 468
 469         LASSERT(obd->obd_stats == NULL);
 470         LASSERT(obd->obd_proc_entry != NULL);
 471         LASSERT(obd->obd_cntr_base == 0);
 472
 473         num_stats = NUM_OBD_STATS + num_private_stats;
 474         stats = lprocfs_alloc_stats(num_stats, 0);
 475         if (stats == NULL)
 476                 return -ENOMEM;
 477
 478         lprocfs_init_ops_stats(num_private_stats, stats);
 479
 480         for (i = num_private_stats; i < num_stats; i++) {
 481                 /* If this LBUGs, it is likely that an obd
 482                  * operation was added to struct obd_ops in
 483                  * <obd.h>, and that the corresponding line item
 484                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 485                  * is missing from the list above. */
 486                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 487                          "Missing obd_stat initializer obd_op "
 488                          "operation at offset %d.\n", i - num_private_stats);
 489         }
 490         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 491         if (rc < 0) {
 492                 lprocfs_free_stats(&stats);
 493         } else {
 494                 obd->obd_stats  = stats;
 495                 obd->obd_cntr_base = num_private_stats;
 496         }
 497         return rc;
 498 }
 499 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 500
 501 void lprocfs_free_obd_stats(struct obd_device *obd)
 502 {
 503         if (obd->obd_stats)
 504                 lprocfs_free_stats(&obd->obd_stats);
 505 }
 506 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 507
 508 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 509 {
 510         struct obd_device *obd = m->private;
 511         int c = 0;
 512
 513         if (obd == NULL)
 514                 return 0;
 515
 516         c += cfs_hash_debug_header(m);
 517         c += cfs_hash_debug_str(obd->obd_uuid_hash, m);
 518         c += cfs_hash_debug_str(obd->obd_nid_hash, m);
 519         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 520         return c;
 521 }
 522 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 523
 524 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 525 {
 526         struct obd_device *obd = m->private;
 527
 528         LASSERT(obd != NULL);
 529
 530         seq_printf(m, "status: ");
 531         if (obd->obd_max_recoverable_clients == 0) {
 532                 seq_printf(m, "INACTIVE\n");
 533                 goto out;
 534         }
 535
 536         /* sampled unlocked, but really... */
 537         if (obd->obd_recovering == 0) {
 538                 seq_printf(m, "COMPLETE\n");
 539                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 540                 seq_printf(m, "recovery_duration: %lu\n",
 541                            obd->obd_recovery_end - obd->obd_recovery_start);
 542                 /* Number of clients that have completed recovery */
 543                 seq_printf(m, "completed_clients: %d/%d\n",
 544                            obd->obd_max_recoverable_clients -
 545                            obd->obd_stale_clients,
 546                            obd->obd_max_recoverable_clients);
 547                 seq_printf(m, "replayed_requests: %d\n",
 548                            obd->obd_replayed_requests);
 549                 seq_printf(m, "last_transno: "LPD64"\n",
 550                            obd->obd_next_recovery_transno - 1);
 551                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 552                            "ENABLED" : "DISABLED");
 553                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 554                            "DISABLED" : "ENABLED");
 555                 goto out;
 556         }
 557
 558         seq_printf(m, "RECOVERING\n");
 559         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 560         seq_printf(m, "time_remaining: %lu\n",
 561                    cfs_time_current_sec() >=
 562                    obd->obd_recovery_start +
 563                    obd->obd_recovery_timeout ? 0 :
 564                    obd->obd_recovery_start +
 565                    obd->obd_recovery_timeout -
 566                    cfs_time_current_sec());
 567         seq_printf(m, "connected_clients: %d/%d\n",
 568                    atomic_read(&obd->obd_connected_clients),
 569                    obd->obd_max_recoverable_clients);
 570         /* Number of clients that have completed recovery */
 571         seq_printf(m, "req_replay_clients: %d\n",
 572                    atomic_read(&obd->obd_req_replay_clients));
 573         seq_printf(m, "lock_repay_clients: %d\n",
 574                    atomic_read(&obd->obd_lock_replay_clients));
 575         seq_printf(m, "completed_clients: %d\n",
 576                    atomic_read(&obd->obd_connected_clients) -
 577                    atomic_read(&obd->obd_lock_replay_clients));
 578         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 579         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 580         seq_printf(m, "queued_requests: %d\n",
 581                    obd->obd_requests_queued_for_recovery);
 582         seq_printf(m, "next_transno: "LPD64"\n",
 583                    obd->obd_next_recovery_transno);
 584 out:
 585         return 0;
 586 }
 587 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 588
 589 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 590 {
 591         struct obd_device *obd = m->private;
 592
 593         LASSERT(obd != NULL);
 594         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 595 }
 596 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 597
 598 ssize_t
 599 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
 600                             size_t count, loff_t *off)
 601 {
 602         struct seq_file *m = file->private_data;
 603         struct obd_device *obd = m->private;
 604         int val, rc;
 605
 606         LASSERT(obd != NULL);
 607         rc = lprocfs_write_helper(buffer, count, &val);
 608         if (rc)
 609                 return rc;
 610
 611         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 612                 return -EINVAL;
 613
 614         obd->obd_recovery_ir_factor = val;
 615         return count;
 616 }
 617 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 618
 619 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 620 {
 621         struct obd_device *obd = m->private;
 622
 623         LASSERT(obd != NULL);
 624         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
 625 }
 626 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 627
 628 ssize_t
 629 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
 630                                         size_t count, loff_t *off)
 631 {
 632         struct seq_file *m = file->private_data;
 633         struct obd_device *obd = m->private;
 634         int val, rc;
 635
 636         LASSERT(obd != NULL);
 637         rc = lprocfs_write_helper(buffer, count, &val);
 638         if (rc)
 639                 return rc;
 640
 641         obd->obd_recovery_timeout = val;
 642         return count;
 643 }
 644 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 645
 646 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 647 {
 648         struct obd_device *obd = m->private;
 649
 650         LASSERT(obd != NULL);
 651         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
 652 }
 653 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 654
 655 ssize_t
 656 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
 657                                      size_t count, loff_t *off)
 658 {
 659         struct seq_file *m = file->private_data;
 660         struct obd_device *obd = m->private;
 661         int val, rc;
 662
 663         LASSERT(obd != NULL);
 664         rc = lprocfs_write_helper(buffer, count, &val);
 665         if (rc)
 666                 return rc;
 667
 668         obd->obd_recovery_time_hard = val;
 669         return count;
 670 }
 671 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 672
 673 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 674 {
 675         struct obd_device *obd = m->private;
 676         struct obd_device_target *target = &obd->u.obt;
 677
 678         LASSERT(obd != NULL);
 679         LASSERT(target->obt_magic == OBT_MAGIC);
 680         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 681 }
 682 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 683
 684 #endif /* CONFIG_PROC_FS*/