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         new_stat->nid_proc = lprocfs_register(buffer,
 349                                               obd->obd_proc_exports_entry,
 350                                               NULL, NULL);
 351         OBD_FREE(buffer, LNET_NIDSTR_SIZE);
 352
 353         if (IS_ERR(new_stat->nid_proc)) {
 354                 rc = PTR_ERR(new_stat->nid_proc);
 355                 new_stat->nid_proc = NULL;
 356                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 357                        obd->obd_name, libcfs_nid2str(*nid), rc);
 358                 GOTO(destroy_new_ns, rc);
 359         }
 360
 361         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
 362                                    &lprocfs_exp_nodemap_fops);
 363         if (IS_ERR(entry)) {
 364                 rc = PTR_ERR(entry);
 365                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
 366                 GOTO(destroy_new_ns, rc);
 367         }
 368
 369         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 370                                    &lprocfs_exp_uuid_fops);
 371         if (IS_ERR(entry)) {
 372                 rc = PTR_ERR(entry);
 373                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
 374                 GOTO(destroy_new_ns, rc);
 375         }
 376
 377         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 378                                    &lprocfs_exp_hash_fops);
 379         if (IS_ERR(entry)) {
 380                 rc = PTR_ERR(entry);
 381                 CWARN("Error adding the hash file: rc = %d\n", rc);
 382                 GOTO(destroy_new_ns, rc);
 383         }
 384
 385         spin_lock(&exp->exp_lock);
 386         exp->exp_nid_stats = new_stat;
 387         spin_unlock(&exp->exp_lock);
 388
 389         /* protect competitive add to list, not need locking on destroy */
 390         spin_lock(&obd->obd_nid_lock);
 391         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 392         spin_unlock(&obd->obd_nid_lock);
 393
 394         RETURN(0);
 395
 396 destroy_new_ns:
 397         if (new_stat->nid_proc != NULL)
 398                 lprocfs_remove(&new_stat->nid_proc);
 399         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 400
 401 destroy_new:
 402         nidstat_putref(new_stat);
 403         OBD_FREE_PTR(new_stat);
 404         RETURN(rc);
 405 }
 406 EXPORT_SYMBOL(lprocfs_exp_setup);
 407
 408 int lprocfs_exp_cleanup(struct obd_export *exp)
 409 {
 410         struct nid_stat *stat = exp->exp_nid_stats;
 411
 412         if (!stat || !exp->exp_obd)
 413                 RETURN(0);
 414
 415         nidstat_putref(exp->exp_nid_stats);
 416         exp->exp_nid_stats = NULL;
 417
 418         return 0;
 419 }
 420 EXPORT_SYMBOL(lprocfs_exp_cleanup);
 421
 422 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 423 do {                                                            \
 424         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 425         LASSERT(coffset < stats->ls_num);                       \
 426         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 427 } while (0)
 428
 429 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 430 {
 431         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 432         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 433         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 434         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 435         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 436         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 437         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 438         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 439         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 440         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 441         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 442         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 443         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 444         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 445         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 446         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 447         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 448         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 449         LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
 450         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
 451         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 452         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 453         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 454         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
 455         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 456         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
 457         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 458         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 459         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 460         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 461         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 462         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 463         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 464         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 465         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
 466         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 467         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 468         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 469         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 470         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 471         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 472         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 473         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 474
 475         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 476 }
 477 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 478
 479 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 480 {
 481         struct lprocfs_stats *stats;
 482         unsigned int num_stats;
 483         int rc, i;
 484
 485         LASSERT(obd->obd_stats == NULL);
 486         LASSERT(obd->obd_proc_entry != NULL);
 487         LASSERT(obd->obd_cntr_base == 0);
 488
 489         num_stats = NUM_OBD_STATS + num_private_stats;
 490         stats = lprocfs_alloc_stats(num_stats, 0);
 491         if (stats == NULL)
 492                 return -ENOMEM;
 493
 494         lprocfs_init_ops_stats(num_private_stats, stats);
 495
 496         for (i = num_private_stats; i < num_stats; i++) {
 497                 /* If this LBUGs, it is likely that an obd
 498                  * operation was added to struct obd_ops in
 499                  * <obd.h>, and that the corresponding line item
 500                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 501                  * is missing from the list above. */
 502                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 503                          "Missing obd_stat initializer obd_op "
 504                          "operation at offset %d.\n", i - num_private_stats);
 505         }
 506         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 507         if (rc < 0) {
 508                 lprocfs_free_stats(&stats);
 509         } else {
 510                 obd->obd_stats  = stats;
 511                 obd->obd_cntr_base = num_private_stats;
 512         }
 513         return rc;
 514 }
 515 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 516
 517 void lprocfs_free_obd_stats(struct obd_device *obd)
 518 {
 519         if (obd->obd_stats)
 520                 lprocfs_free_stats(&obd->obd_stats);
 521 }
 522 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 523
 524 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 525 {
 526         struct obd_device *obd = m->private;
 527         int c = 0;
 528
 529         if (obd == NULL)
 530                 return 0;
 531
 532         c += cfs_hash_debug_header(m);
 533         c += cfs_hash_debug_str(obd->obd_uuid_hash, m);
 534         c += cfs_hash_debug_str(obd->obd_nid_hash, m);
 535         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 536         return c;
 537 }
 538 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 539
 540 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 541 {
 542         struct obd_device *obd = m->private;
 543
 544         LASSERT(obd != NULL);
 545
 546         seq_printf(m, "status: ");
 547         if (obd->obd_max_recoverable_clients == 0) {
 548                 seq_printf(m, "INACTIVE\n");
 549                 goto out;
 550         }
 551
 552         /* sampled unlocked, but really... */
 553         if (obd->obd_recovering == 0) {
 554                 seq_printf(m, "COMPLETE\n");
 555                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 556                 seq_printf(m, "recovery_duration: %lu\n",
 557                            obd->obd_recovery_end - obd->obd_recovery_start);
 558                 /* Number of clients that have completed recovery */
 559                 seq_printf(m, "completed_clients: %d/%d\n",
 560                            obd->obd_max_recoverable_clients -
 561                            obd->obd_stale_clients,
 562                            obd->obd_max_recoverable_clients);
 563                 seq_printf(m, "replayed_requests: %d\n",
 564                            obd->obd_replayed_requests);
 565                 seq_printf(m, "last_transno: "LPD64"\n",
 566                            obd->obd_next_recovery_transno - 1);
 567                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 568                            "ENABLED" : "DISABLED");
 569                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 570                            "DISABLED" : "ENABLED");
 571                 goto out;
 572         }
 573
 574         seq_printf(m, "RECOVERING\n");
 575         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 576         seq_printf(m, "time_remaining: %lu\n",
 577                    cfs_time_current_sec() >=
 578                    obd->obd_recovery_start +
 579                    obd->obd_recovery_timeout ? 0 :
 580                    obd->obd_recovery_start +
 581                    obd->obd_recovery_timeout -
 582                    cfs_time_current_sec());
 583         seq_printf(m, "connected_clients: %d/%d\n",
 584                    atomic_read(&obd->obd_connected_clients),
 585                    obd->obd_max_recoverable_clients);
 586         /* Number of clients that have completed recovery */
 587         seq_printf(m, "req_replay_clients: %d\n",
 588                    atomic_read(&obd->obd_req_replay_clients));
 589         seq_printf(m, "lock_repay_clients: %d\n",
 590                    atomic_read(&obd->obd_lock_replay_clients));
 591         seq_printf(m, "completed_clients: %d\n",
 592                    atomic_read(&obd->obd_connected_clients) -
 593                    atomic_read(&obd->obd_lock_replay_clients));
 594         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 595         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 596         seq_printf(m, "queued_requests: %d\n",
 597                    obd->obd_requests_queued_for_recovery);
 598         seq_printf(m, "next_transno: "LPD64"\n",
 599                    obd->obd_next_recovery_transno);
 600 out:
 601         return 0;
 602 }
 603 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 604
 605 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 606 {
 607         struct obd_device *obd = m->private;
 608
 609         LASSERT(obd != NULL);
 610         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 611 }
 612 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 613
 614 ssize_t
 615 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
 616                             size_t count, loff_t *off)
 617 {
 618         struct seq_file *m = file->private_data;
 619         struct obd_device *obd = m->private;
 620         int val, rc;
 621
 622         LASSERT(obd != NULL);
 623         rc = lprocfs_write_helper(buffer, count, &val);
 624         if (rc)
 625                 return rc;
 626
 627         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 628                 return -EINVAL;
 629
 630         obd->obd_recovery_ir_factor = val;
 631         return count;
 632 }
 633 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 634
 635 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 636 {
 637         struct obd_device *obd = m->private;
 638
 639         LASSERT(obd != NULL);
 640         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
 641 }
 642 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 643
 644 ssize_t
 645 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
 646                                         size_t count, loff_t *off)
 647 {
 648         struct seq_file *m = file->private_data;
 649         struct obd_device *obd = m->private;
 650         int val, rc;
 651
 652         LASSERT(obd != NULL);
 653         rc = lprocfs_write_helper(buffer, count, &val);
 654         if (rc)
 655                 return rc;
 656
 657         obd->obd_recovery_timeout = val;
 658         return count;
 659 }
 660 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 661
 662 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 663 {
 664         struct obd_device *obd = m->private;
 665
 666         LASSERT(obd != NULL);
 667         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
 668 }
 669 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 670
 671 ssize_t
 672 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
 673                                      size_t count, loff_t *off)
 674 {
 675         struct seq_file *m = file->private_data;
 676         struct obd_device *obd = m->private;
 677         int val, rc;
 678
 679         LASSERT(obd != NULL);
 680         rc = lprocfs_write_helper(buffer, count, &val);
 681         if (rc)
 682                 return rc;
 683
 684         obd->obd_recovery_time_hard = val;
 685         return count;
 686 }
 687 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 688
 689 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 690 {
 691         struct obd_device *obd = m->private;
 692         struct obd_device_target *target = &obd->u.obt;
 693
 694         LASSERT(obd != NULL);
 695         LASSERT(target->obt_magic == OBT_MAGIC);
 696         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 697 }
 698 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 699
 700 #endif /* CONFIG_PROC_FS*/