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_exp_print_replydata_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 232                                     struct hlist_node *hnode, void *cb_data)
 233
 234 {
 235         struct obd_export *exp = cfs_hash_object(hs, hnode);
 236         struct seq_file *m = cb_data;
 237         struct tg_export_data *ted = &exp->exp_target_data;
 238
 239         seq_printf(m, "reply_cnt: %d\n"
 240                       "reply_max: %d\n"
 241                       "reply_released_by_xid: %d\n"
 242                       "reply_released_by_tag: %d\n\n",
 243                    ted->ted_reply_cnt,
 244                    ted->ted_reply_max,
 245                    ted->ted_release_xid,
 246                    ted->ted_release_tag);
 247         return 0;
 248 }
 249
 250 int lprocfs_exp_replydata_seq_show(struct seq_file *m, void *data)
 251 {
 252         struct nid_stat *stats = m->private;
 253         struct obd_device *obd = stats->nid_obd;
 254
 255         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 256                                 lprocfs_exp_print_replydata_seq, m);
 257         return 0;
 258 }
 259 LPROC_SEQ_FOPS_RO(lprocfs_exp_replydata);
 260
 261 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
 262 {
 263         return seq_printf(m, "%s\n", "Write into this file to clear all nid "
 264                           "stats and stale nid entries");
 265 }
 266 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
 267
 268 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 269 {
 270         struct nid_stat *stat = obj;
 271         ENTRY;
 272
 273         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
 274         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
 275                 /* object has only hash references. */
 276                 spin_lock(&stat->nid_obd->obd_nid_lock);
 277                 list_move(&stat->nid_list, data);
 278                 spin_unlock(&stat->nid_obd->obd_nid_lock);
 279                 RETURN(1);
 280         }
 281         /* we has reference to object - only clear data*/
 282         if (stat->nid_stats)
 283                 lprocfs_clear_stats(stat->nid_stats);
 284
 285         RETURN(0);
 286 }
 287
 288 ssize_t
 289 lprocfs_nid_stats_clear_seq_write(struct file *file, const char *buffer,
 290                                         size_t count, loff_t *off)
 291 {
 292         struct seq_file *m = file->private_data;
 293         struct obd_device *obd = m->private;
 294         struct nid_stat *client_stat;
 295         struct list_head free_list;
 296
 297         INIT_LIST_HEAD(&free_list);
 298         cfs_hash_cond_del(obd->obd_nid_stats_hash,
 299                           lprocfs_nid_stats_clear_write_cb, &free_list);
 300
 301         while (!list_empty(&free_list)) {
 302                 client_stat = list_entry(free_list.next, struct nid_stat,
 303                                          nid_list);
 304                 list_del_init(&client_stat->nid_list);
 305                 lprocfs_free_client_stats(client_stat);
 306         }
 307         return count;
 308 }
 309 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
 310
 311 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
 312 {
 313         struct nid_stat *new_stat, *old_stat;
 314         struct obd_device *obd = NULL;
 315         struct proc_dir_entry *entry;
 316         char nidstr[LNET_NIDSTR_SIZE];
 317         int rc = 0;
 318         ENTRY;
 319
 320         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
 321             !exp->exp_obd->obd_nid_stats_hash)
 322                 RETURN(-EINVAL);
 323
 324         /* not test against zero because eric say:
 325          * You may only test nid against another nid, or LNET_NID_ANY.
 326          * Anything else is nonsense.*/
 327         if (nid == NULL || *nid == LNET_NID_ANY)
 328                 RETURN(-EALREADY);
 329
 330         libcfs_nid2str_r(*nid, nidstr, sizeof(nidstr));
 331
 332         spin_lock(&exp->exp_lock);
 333         if (exp->exp_nid_stats != NULL) {
 334                 spin_unlock(&exp->exp_lock);
 335                 RETURN(-EALREADY);
 336         }
 337         spin_unlock(&exp->exp_lock);
 338
 339         obd = exp->exp_obd;
 340
 341         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 342
 343         OBD_ALLOC_PTR(new_stat);
 344         if (new_stat == NULL)
 345                 RETURN(-ENOMEM);
 346
 347         new_stat->nid     = *nid;
 348         new_stat->nid_obd = exp->exp_obd;
 349         /* we need set default refcount to 1 to balance obd_disconnect */
 350         atomic_set(&new_stat->nid_exp_ref_count, 1);
 351
 352         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
 353                                            nid, &new_stat->nid_hash);
 354         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
 355                old_stat, nidstr, atomic_read(&old_stat->nid_exp_ref_count));
 356
 357         /* Return -EALREADY here so that we know that the /proc
 358          * entry already has been created */
 359         if (old_stat != new_stat) {
 360                 spin_lock(&exp->exp_lock);
 361                 if (exp->exp_nid_stats) {
 362                         LASSERT(exp->exp_nid_stats == old_stat);
 363                         nidstat_putref(exp->exp_nid_stats);
 364                 }
 365                 exp->exp_nid_stats = old_stat;
 366                 spin_unlock(&exp->exp_lock);
 367                 GOTO(destroy_new, rc = -EALREADY);
 368         }
 369         /* not found - create */
 370         new_stat->nid_proc = lprocfs_register(nidstr,
 371                                               obd->obd_proc_exports_entry,
 372                                               NULL, NULL);
 373
 374         if (IS_ERR(new_stat->nid_proc)) {
 375                 rc = PTR_ERR(new_stat->nid_proc);
 376                 new_stat->nid_proc = NULL;
 377                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 378                        obd->obd_name, nidstr, rc);
 379                 GOTO(destroy_new_ns, rc);
 380         }
 381
 382         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
 383                                    &lprocfs_exp_nodemap_fops);
 384         if (IS_ERR(entry)) {
 385                 rc = PTR_ERR(entry);
 386                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
 387                 GOTO(destroy_new_ns, rc);
 388         }
 389
 390         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 391                                    &lprocfs_exp_uuid_fops);
 392         if (IS_ERR(entry)) {
 393                 rc = PTR_ERR(entry);
 394                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
 395                 GOTO(destroy_new_ns, rc);
 396         }
 397
 398         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 399                                    &lprocfs_exp_hash_fops);
 400         if (IS_ERR(entry)) {
 401                 rc = PTR_ERR(entry);
 402                 CWARN("Error adding the hash file: rc = %d\n", rc);
 403                 GOTO(destroy_new_ns, rc);
 404         }
 405
 406         entry = lprocfs_add_simple(new_stat->nid_proc, "reply_data", new_stat,
 407                                    &lprocfs_exp_replydata_fops);
 408         if (IS_ERR(entry)) {
 409                 rc = PTR_ERR(entry);
 410                 CWARN("%s: Error adding the reply_data file: rc = %d\n",
 411                       obd->obd_name, rc);
 412                 GOTO(destroy_new_ns, rc);
 413         }
 414
 415         spin_lock(&exp->exp_lock);
 416         exp->exp_nid_stats = new_stat;
 417         spin_unlock(&exp->exp_lock);
 418
 419         /* protect competitive add to list, not need locking on destroy */
 420         spin_lock(&obd->obd_nid_lock);
 421         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 422         spin_unlock(&obd->obd_nid_lock);
 423
 424         RETURN(0);
 425
 426 destroy_new_ns:
 427         if (new_stat->nid_proc != NULL)
 428                 lprocfs_remove(&new_stat->nid_proc);
 429         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 430
 431 destroy_new:
 432         nidstat_putref(new_stat);
 433         OBD_FREE_PTR(new_stat);
 434         RETURN(rc);
 435 }
 436 EXPORT_SYMBOL(lprocfs_exp_setup);
 437
 438 int lprocfs_exp_cleanup(struct obd_export *exp)
 439 {
 440         struct nid_stat *stat = exp->exp_nid_stats;
 441
 442         if (!stat || !exp->exp_obd)
 443                 RETURN(0);
 444
 445         nidstat_putref(exp->exp_nid_stats);
 446         exp->exp_nid_stats = NULL;
 447
 448         return 0;
 449 }
 450
 451 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 452 do {                                                            \
 453         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 454         LASSERT(coffset < stats->ls_num);                       \
 455         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 456 } while (0)
 457
 458 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 459 {
 460         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 461         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 462         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 463         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 464         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 465         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 466         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 467         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 468         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 469         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 470         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 471         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 472         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 473         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 474         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 475         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 476         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 477         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 478         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 479         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 480         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 481         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 482         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 483         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 484         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 485         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 486         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 487         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 488         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 489         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 490         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 491         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 492         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 493         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 494         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 495         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 496         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 497         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 498
 499         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 500 }
 501 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 502
 503 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 504 {
 505         struct lprocfs_stats *stats;
 506         unsigned int num_stats;
 507         int rc, i;
 508
 509         LASSERT(obd->obd_stats == NULL);
 510         LASSERT(obd->obd_proc_entry != NULL);
 511         LASSERT(obd->obd_cntr_base == 0);
 512
 513         num_stats = NUM_OBD_STATS + num_private_stats;
 514         stats = lprocfs_alloc_stats(num_stats, 0);
 515         if (stats == NULL)
 516                 return -ENOMEM;
 517
 518         lprocfs_init_ops_stats(num_private_stats, stats);
 519
 520         for (i = num_private_stats; i < num_stats; i++) {
 521                 /* If this LBUGs, it is likely that an obd
 522                  * operation was added to struct obd_ops in
 523                  * <obd.h>, and that the corresponding line item
 524                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 525                  * is missing from the list above. */
 526                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 527                          "Missing obd_stat initializer obd_op "
 528                          "operation at offset %d.\n", i - num_private_stats);
 529         }
 530         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 531         if (rc < 0) {
 532                 lprocfs_free_stats(&stats);
 533         } else {
 534                 obd->obd_stats  = stats;
 535                 obd->obd_cntr_base = num_private_stats;
 536         }
 537         return rc;
 538 }
 539 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 540
 541 void lprocfs_free_obd_stats(struct obd_device *obd)
 542 {
 543         if (obd->obd_stats)
 544                 lprocfs_free_stats(&obd->obd_stats);
 545 }
 546 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 547
 548 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 549 {
 550         struct obd_device *obd = m->private;
 551         int c = 0;
 552
 553         if (obd == NULL)
 554                 return 0;
 555
 556         c += cfs_hash_debug_header(m);
 557         c += cfs_hash_debug_str(obd->obd_uuid_hash, m);
 558         c += cfs_hash_debug_str(obd->obd_nid_hash, m);
 559         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 560         return c;
 561 }
 562 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 563
 564 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 565 {
 566         struct obd_device *obd = m->private;
 567
 568         LASSERT(obd != NULL);
 569
 570         seq_printf(m, "status: ");
 571         if (obd->obd_max_recoverable_clients == 0) {
 572                 seq_printf(m, "INACTIVE\n");
 573                 goto out;
 574         }
 575
 576         /* sampled unlocked, but really... */
 577         if (obd->obd_recovering == 0) {
 578                 seq_printf(m, "COMPLETE\n");
 579                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 580                 seq_printf(m, "recovery_duration: %lu\n",
 581                            obd->obd_recovery_end - obd->obd_recovery_start);
 582                 /* Number of clients that have completed recovery */
 583                 seq_printf(m, "completed_clients: %d/%d\n",
 584                            obd->obd_max_recoverable_clients -
 585                            obd->obd_stale_clients,
 586                            obd->obd_max_recoverable_clients);
 587                 seq_printf(m, "replayed_requests: %d\n",
 588                            obd->obd_replayed_requests);
 589                 seq_printf(m, "last_transno: "LPD64"\n",
 590                            obd->obd_next_recovery_transno - 1);
 591                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 592                            "ENABLED" : "DISABLED");
 593                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 594                            "DISABLED" : "ENABLED");
 595                 goto out;
 596         }
 597
 598         seq_printf(m, "RECOVERING\n");
 599         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 600         seq_printf(m, "time_remaining: %lu\n",
 601                    cfs_time_current_sec() >=
 602                    obd->obd_recovery_start +
 603                    obd->obd_recovery_timeout ? 0 :
 604                    obd->obd_recovery_start +
 605                    obd->obd_recovery_timeout -
 606                    cfs_time_current_sec());
 607         seq_printf(m, "connected_clients: %d/%d\n",
 608                    atomic_read(&obd->obd_connected_clients),
 609                    obd->obd_max_recoverable_clients);
 610         /* Number of clients that have completed recovery */
 611         seq_printf(m, "req_replay_clients: %d\n",
 612                    atomic_read(&obd->obd_req_replay_clients));
 613         seq_printf(m, "lock_repay_clients: %d\n",
 614                    atomic_read(&obd->obd_lock_replay_clients));
 615         seq_printf(m, "completed_clients: %d\n",
 616                    atomic_read(&obd->obd_connected_clients) -
 617                    atomic_read(&obd->obd_lock_replay_clients));
 618         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 619         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 620         seq_printf(m, "queued_requests: %d\n",
 621                    obd->obd_requests_queued_for_recovery);
 622         seq_printf(m, "next_transno: "LPD64"\n",
 623                    obd->obd_next_recovery_transno);
 624 out:
 625         return 0;
 626 }
 627 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 628
 629 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 630 {
 631         struct obd_device *obd = m->private;
 632
 633         LASSERT(obd != NULL);
 634         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 635 }
 636 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 637
 638 ssize_t
 639 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
 640                             size_t count, loff_t *off)
 641 {
 642         struct seq_file *m = file->private_data;
 643         struct obd_device *obd = m->private;
 644         int val, rc;
 645
 646         LASSERT(obd != NULL);
 647         rc = lprocfs_write_helper(buffer, count, &val);
 648         if (rc)
 649                 return rc;
 650
 651         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 652                 return -EINVAL;
 653
 654         obd->obd_recovery_ir_factor = val;
 655         return count;
 656 }
 657 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 658
 659 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 660 {
 661         struct obd_device *obd = m->private;
 662
 663         LASSERT(obd != NULL);
 664         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
 665 }
 666 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 667
 668 ssize_t
 669 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
 670                                         size_t count, loff_t *off)
 671 {
 672         struct seq_file *m = file->private_data;
 673         struct obd_device *obd = m->private;
 674         int val, rc;
 675
 676         LASSERT(obd != NULL);
 677         rc = lprocfs_write_helper(buffer, count, &val);
 678         if (rc)
 679                 return rc;
 680
 681         obd->obd_recovery_timeout = val;
 682         return count;
 683 }
 684 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 685
 686 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 687 {
 688         struct obd_device *obd = m->private;
 689
 690         LASSERT(obd != NULL);
 691         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
 692 }
 693 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 694
 695 ssize_t
 696 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
 697                                      size_t count, loff_t *off)
 698 {
 699         struct seq_file *m = file->private_data;
 700         struct obd_device *obd = m->private;
 701         int val, rc;
 702
 703         LASSERT(obd != NULL);
 704         rc = lprocfs_write_helper(buffer, count, &val);
 705         if (rc)
 706                 return rc;
 707
 708         obd->obd_recovery_time_hard = val;
 709         return count;
 710 }
 711 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 712
 713 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 714 {
 715         struct obd_device *obd = m->private;
 716         struct obd_device_target *target = &obd->u.obt;
 717
 718         LASSERT(obd != NULL);
 719         LASSERT(target->obt_magic == OBT_MAGIC);
 720         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 721 }
 722 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 723
 724 #endif /* CONFIG_PROC_FS*/