lustre/osd-ldiskfs/osd_lproc.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  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/osd/osd_lproc.c
  37  *
  38  * Author: Mikhail Pershin <tappro@sun.com>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_CLASS
  42
  43 #include <lprocfs_status.h>
  44 #include <lustre/lustre_idl.h>
  45
  46 #include "osd_internal.h"
  47
  48 #ifdef LPROCFS
  49
  50 void osd_brw_stats_update(struct osd_device *osd, struct osd_iobuf *iobuf)
  51 {
  52         struct brw_stats *s = &osd->od_brw_stats;
  53         unsigned long    *last_block = NULL;
  54         struct page     **pages = iobuf->dr_pages;
  55         struct page      *last_page = NULL;
  56         unsigned long     discont_pages = 0;
  57         unsigned long     discont_blocks = 0;
  58         unsigned long    *blocks = iobuf->dr_blocks;
  59         int               i, nr_pages = iobuf->dr_npages;
  60         int               blocks_per_page;
  61         int               rw = iobuf->dr_rw;
  62
  63         if (unlikely(nr_pages == 0))
  64                 return;
  65
  66         blocks_per_page = PAGE_CACHE_SIZE >> osd_sb(osd)->s_blocksize_bits;
  67
  68         lprocfs_oh_tally_log2(&s->hist[BRW_R_PAGES+rw], nr_pages);
  69
  70         while (nr_pages-- > 0) {
  71                 if (last_page && (*pages)->index != (last_page->index + 1))
  72                         discont_pages++;
  73                 last_page = *pages;
  74                 pages++;
  75                 for (i = 0; i < blocks_per_page; i++) {
  76                         if (last_block && *blocks != (*last_block + 1))
  77                                 discont_blocks++;
  78                         last_block = blocks++;
  79                 }
  80         }
  81
  82         lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_PAGES+rw], discont_pages);
  83         lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_BLOCKS+rw], discont_blocks);
  84 }
  85
  86 #define pct(a, b) (b ? a * 100 / b : 0)
  87
  88 static void display_brw_stats(struct seq_file *seq, char *name, char *units,
  89         struct obd_histogram *read, struct obd_histogram *write, int scale)
  90 {
  91         unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
  92         int i;
  93
  94         seq_printf(seq, "\n%26s read      |     write\n", " ");
  95         seq_printf(seq, "%-22s %-5s %% cum %% |  %-11s %% cum %%\n",
  96                    name, units, units);
  97
  98         read_tot = lprocfs_oh_sum(read);
  99         write_tot = lprocfs_oh_sum(write);
 100         for (i = 0; i < OBD_HIST_MAX; i++) {
 101                 r = read->oh_buckets[i];
 102                 w = write->oh_buckets[i];
 103                 read_cum += r;
 104                 write_cum += w;
 105                 if (read_cum == 0 && write_cum == 0)
 106                         continue;
 107
 108                 if (!scale)
 109                         seq_printf(seq, "%u", i);
 110                 else if (i < 10)
 111                         seq_printf(seq, "%u", scale << i);
 112                 else if (i < 20)
 113                         seq_printf(seq, "%uK", scale << (i-10));
 114                 else
 115                         seq_printf(seq, "%uM", scale << (i-20));
 116
 117                 seq_printf(seq, ":\t\t%10lu %3lu %3lu   | %4lu %3lu %3lu\n",
 118                            r, pct(r, read_tot), pct(read_cum, read_tot),
 119                            w, pct(w, write_tot), pct(write_cum, write_tot));
 120
 121                 if (read_cum == read_tot && write_cum == write_tot)
 122                         break;
 123         }
 124 }
 125
 126 static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
 127 {
 128         struct timeval now;
 129
 130         /* this sampling races with updates */
 131         do_gettimeofday(&now);
 132         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 133                    now.tv_sec, now.tv_usec);
 134
 135         display_brw_stats(seq, "pages per bulk r/w", "rpcs",
 136                           &brw_stats->hist[BRW_R_PAGES],
 137                           &brw_stats->hist[BRW_W_PAGES], 1);
 138
 139         display_brw_stats(seq, "discontiguous pages", "rpcs",
 140                           &brw_stats->hist[BRW_R_DISCONT_PAGES],
 141                           &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
 142
 143         display_brw_stats(seq, "discontiguous blocks", "rpcs",
 144                           &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
 145                           &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
 146
 147         display_brw_stats(seq, "disk fragmented I/Os", "ios",
 148                           &brw_stats->hist[BRW_R_DIO_FRAGS],
 149                           &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
 150
 151         display_brw_stats(seq, "disk I/Os in flight", "ios",
 152                           &brw_stats->hist[BRW_R_RPC_HIST],
 153                           &brw_stats->hist[BRW_W_RPC_HIST], 0);
 154
 155         display_brw_stats(seq, "I/O time (1/1000s)", "ios",
 156                           &brw_stats->hist[BRW_R_IO_TIME],
 157                           &brw_stats->hist[BRW_W_IO_TIME], 1000 / HZ);
 158
 159         display_brw_stats(seq, "disk I/O size", "ios",
 160                           &brw_stats->hist[BRW_R_DISK_IOSIZE],
 161                           &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
 162 }
 163
 164 #undef pct
 165
 166 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
 167 {
 168         struct osd_device *osd = seq->private;
 169
 170         brw_stats_show(seq, &osd->od_brw_stats);
 171
 172         return 0;
 173 }
 174
 175 static ssize_t osd_brw_stats_seq_write(struct file *file, const char *buf,
 176                                        size_t len, loff_t *off)
 177 {
 178         struct seq_file *seq = file->private_data;
 179         struct osd_device *osd = seq->private;
 180         int i;
 181
 182         for (i = 0; i < BRW_LAST; i++)
 183                 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
 184
 185         return len;
 186 }
 187
 188 LPROC_SEQ_FOPS(osd_brw_stats);
 189
 190 static int osd_stats_init(struct osd_device *osd)
 191 {
 192         int i, result;
 193         ENTRY;
 194
 195         for (i = 0; i < BRW_LAST; i++)
 196                 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
 197
 198         osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
 199         if (osd->od_stats != NULL) {
 200                 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
 201                                                 osd->od_stats);
 202                 if (result)
 203                         GOTO(out, result);
 204
 205                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
 206                                      LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
 207                                      "get_page", "usec");
 208                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
 209                                      LPROCFS_CNTR_AVGMINMAX,
 210                                      "get_page_failures", "num");
 211                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
 212                                      LPROCFS_CNTR_AVGMINMAX,
 213                                      "cache_access", "pages");
 214                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
 215                                      LPROCFS_CNTR_AVGMINMAX,
 216                                      "cache_hit", "pages");
 217                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
 218                                      LPROCFS_CNTR_AVGMINMAX,
 219                                      "cache_miss", "pages");
 220 #if OSD_THANDLE_STATS
 221                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
 222                                      LPROCFS_CNTR_AVGMINMAX,
 223                                      "thandle starting", "usec");
 224                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
 225                                      LPROCFS_CNTR_AVGMINMAX,
 226                                      "thandle open", "usec");
 227                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
 228                                      LPROCFS_CNTR_AVGMINMAX,
 229                                      "thandle closing", "usec");
 230 #endif
 231                 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
 232                                             0644, &osd_brw_stats_fops, osd);
 233         } else
 234                 result = -ENOMEM;
 235
 236 out:
 237         RETURN(result);
 238 }
 239
 240 static int ldiskfs_osd_fstype_seq_show(struct seq_file *m, void *data)
 241 {
 242         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 243
 244         LASSERT(osd != NULL);
 245         return seq_printf(m, "ldiskfs\n");
 246 }
 247 LPROC_SEQ_FOPS_RO(ldiskfs_osd_fstype);
 248
 249 static int ldiskfs_osd_mntdev_seq_show(struct seq_file *m, void *data)
 250 {
 251         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 252
 253         LASSERT(osd != NULL);
 254         if (unlikely(osd->od_mnt == NULL))
 255                 return -EINPROGRESS;
 256
 257         return seq_printf(m, "%s\n", osd->od_mntdev);
 258 }
 259 LPROC_SEQ_FOPS_RO(ldiskfs_osd_mntdev);
 260
 261 static int ldiskfs_osd_cache_seq_show(struct seq_file *m, void *data)
 262 {
 263         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 264
 265         LASSERT(osd != NULL);
 266         if (unlikely(osd->od_mnt == NULL))
 267                 return -EINPROGRESS;
 268
 269         return seq_printf(m, "%u\n", osd->od_read_cache);
 270 }
 271
 272 static ssize_t
 273 ldiskfs_osd_cache_seq_write(struct file *file, const char *buffer,
 274                             size_t count, loff_t *off)
 275 {
 276         struct seq_file   *m = file->private_data;
 277         struct dt_device  *dt = m->private;
 278         struct osd_device *osd = osd_dt_dev(dt);
 279         int                val, rc;
 280
 281         LASSERT(osd != NULL);
 282         if (unlikely(osd->od_mnt == NULL))
 283                 return -EINPROGRESS;
 284
 285         rc = lprocfs_write_helper(buffer, count, &val);
 286         if (rc)
 287                 return rc;
 288
 289         osd->od_read_cache = !!val;
 290         return count;
 291 }
 292 LPROC_SEQ_FOPS(ldiskfs_osd_cache);
 293
 294 static int ldiskfs_osd_wcache_seq_show(struct seq_file *m, void *data)
 295 {
 296         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 297
 298         LASSERT(osd != NULL);
 299         if (unlikely(osd->od_mnt == NULL))
 300                 return -EINPROGRESS;
 301
 302         return seq_printf(m, "%u\n", osd->od_writethrough_cache);
 303 }
 304
 305 static ssize_t
 306 ldiskfs_osd_wcache_seq_write(struct file *file, const char *buffer,
 307                                 size_t count, loff_t *off)
 308 {
 309         struct seq_file   *m = file->private_data;
 310         struct dt_device  *dt = m->private;
 311         struct osd_device *osd = osd_dt_dev(dt);
 312         int                val, rc;
 313
 314         LASSERT(osd != NULL);
 315         if (unlikely(osd->od_mnt == NULL))
 316                 return -EINPROGRESS;
 317
 318         rc = lprocfs_write_helper(buffer, count, &val);
 319         if (rc)
 320                 return rc;
 321
 322         osd->od_writethrough_cache = !!val;
 323         return count;
 324 }
 325 LPROC_SEQ_FOPS(ldiskfs_osd_wcache);
 326
 327 static ssize_t
 328 lprocfs_osd_force_sync_seq_write(struct file *file, const char *buffer,
 329                                         size_t count, loff_t *off)
 330 {
 331         struct seq_file   *m = file->private_data;
 332         struct dt_device  *dt = m->private;
 333         struct osd_device *osd = osd_dt_dev(dt);
 334         struct lu_env      env;
 335         int                rc;
 336
 337         LASSERT(osd != NULL);
 338         if (unlikely(osd->od_mnt == NULL))
 339                 return -EINPROGRESS;
 340
 341         rc = lu_env_init(&env, LCT_LOCAL);
 342         if (rc)
 343                 return rc;
 344         rc = dt_sync(&env, dt);
 345         lu_env_fini(&env);
 346
 347         return rc == 0 ? count : rc;
 348 }
 349 LPROC_SEQ_FOPS_WO_TYPE(ldiskfs, osd_force_sync);
 350
 351 static int ldiskfs_osd_pdo_seq_show(struct seq_file *m, void *data)
 352 {
 353         return seq_printf(m, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 354 }
 355
 356 static ssize_t
 357 ldiskfs_osd_pdo_seq_write(struct file *file, const char *buffer,
 358                                 size_t count, loff_t *off)
 359 {
 360         int pdo, rc;
 361
 362         rc = lprocfs_write_helper(buffer, count, &pdo);
 363         if (rc != 0)
 364                 return rc;
 365
 366         ldiskfs_pdo = !!pdo;
 367
 368         return count;
 369 }
 370 LPROC_SEQ_FOPS(ldiskfs_osd_pdo);
 371
 372 static int ldiskfs_osd_auto_scrub_seq_show(struct seq_file *m, void *data)
 373 {
 374         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 375
 376         LASSERT(dev != NULL);
 377         if (unlikely(dev->od_mnt == NULL))
 378                 return -EINPROGRESS;
 379
 380         return seq_printf(m, "%d\n", !dev->od_noscrub);
 381 }
 382
 383 static ssize_t
 384 ldiskfs_osd_auto_scrub_seq_write(struct file *file, const char *buffer,
 385                                         size_t count, loff_t *off)
 386 {
 387         struct seq_file   *m = file->private_data;
 388         struct dt_device  *dt = m->private;
 389         struct osd_device *dev = osd_dt_dev(dt);
 390         int val, rc;
 391
 392         LASSERT(dev != NULL);
 393         if (unlikely(dev->od_mnt == NULL))
 394                 return -EINPROGRESS;
 395
 396         rc = lprocfs_write_helper(buffer, count, &val);
 397         if (rc)
 398                 return rc;
 399
 400         dev->od_noscrub = !val;
 401         return count;
 402 }
 403 LPROC_SEQ_FOPS(ldiskfs_osd_auto_scrub);
 404
 405 static int
 406 ldiskfs_osd_track_declares_assert_seq_show(struct seq_file *m, void *data)
 407 {
 408         return seq_printf(m, "%d\n", ldiskfs_track_declares_assert);
 409 }
 410
 411 static ssize_t
 412 ldiskfs_osd_track_declares_assert_seq_write(struct file *file,
 413                                                 const char *buffer,
 414                                                 size_t count, loff_t *off)
 415 {
 416         int     track_declares_assert;
 417         int     rc;
 418
 419         rc = lprocfs_write_helper(buffer, count, &track_declares_assert);
 420         if (rc != 0)
 421                 return rc;
 422
 423         ldiskfs_track_declares_assert = !!track_declares_assert;
 424
 425         return count;
 426 }
 427 LPROC_SEQ_FOPS(ldiskfs_osd_track_declares_assert);
 428
 429 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 430 {
 431         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 432
 433         LASSERT(dev != NULL);
 434         if (unlikely(dev->od_mnt == NULL))
 435                 return -EINPROGRESS;
 436
 437         return osd_scrub_dump(m, dev);
 438 }
 439 LPROC_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 440
 441 int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 442 {
 443         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 444
 445         LASSERT(osd != NULL);
 446         if (unlikely(osd->od_mnt == NULL))
 447                 return -EINPROGRESS;
 448
 449         return seq_printf(m, LPU64"\n", osd->od_readcache_max_filesize);
 450 }
 451
 452 ssize_t
 453 ldiskfs_osd_readcache_seq_write(struct file *file, const char *buffer,
 454                                 size_t count, loff_t *off)
 455 {
 456         struct seq_file   *m = file->private_data;
 457         struct dt_device  *dt = m->private;
 458         struct osd_device *osd = osd_dt_dev(dt);
 459         __u64              val;
 460         int                rc;
 461
 462         LASSERT(osd != NULL);
 463         if (unlikely(osd->od_mnt == NULL))
 464                 return -EINPROGRESS;
 465
 466         rc = lprocfs_write_u64_helper(buffer, count, &val);
 467         if (rc)
 468                 return rc;
 469
 470         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 471                                          OSD_MAX_CACHE_SIZE : val;
 472         return count;
 473 }
 474 LPROC_SEQ_FOPS(ldiskfs_osd_readcache);
 475
 476 static int ldiskfs_osd_lma_self_repair_seq_show(struct seq_file *m, void *data)
 477 {
 478         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 479
 480         LASSERT(dev != NULL);
 481         if (unlikely(dev->od_mnt == NULL))
 482                 return -EINPROGRESS;
 483
 484         return seq_printf(m, "%d\n", !!dev->od_lma_self_repair);
 485 }
 486
 487 static ssize_t
 488 ldiskfs_osd_lma_self_repair_seq_write(struct file *file, const char *buffer,
 489                                         size_t count, loff_t *off)
 490 {
 491         struct seq_file   *m = file->private_data;
 492         struct dt_device  *dt = m->private;
 493         struct osd_device *dev = osd_dt_dev(dt);
 494         int                val;
 495         int                rc;
 496
 497         LASSERT(dev != NULL);
 498         if (unlikely(dev->od_mnt == NULL))
 499                 return -EINPROGRESS;
 500
 501         rc = lprocfs_write_helper(buffer, count, &val);
 502         if (rc)
 503                 return rc;
 504
 505         dev->od_lma_self_repair = !!val;
 506         return count;
 507 }
 508 LPROC_SEQ_FOPS(ldiskfs_osd_lma_self_repair);
 509
 510 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_blksize);
 511 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytestotal);
 512 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesfree);
 513 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesavail);
 514 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filestotal);
 515 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filesfree);
 516
 517 struct lprocfs_seq_vars lprocfs_osd_obd_vars[] = {
 518         { .name =       "blocksize",
 519           .fops =       &ldiskfs_dt_blksize_fops        },
 520         { .name =       "kbytestotal",
 521           .fops =       &ldiskfs_dt_kbytestotal_fops    },
 522         { .name =       "kbytesfree",
 523           .fops =       &ldiskfs_dt_kbytesfree_fops     },
 524         { .name =       "kbytesavail",
 525           .fops =       &ldiskfs_dt_kbytesavail_fops    },
 526         { .name =       "filestotal",
 527           .fops =       &ldiskfs_dt_filestotal_fops     },
 528         { .name =       "filesfree",
 529           .fops =       &ldiskfs_dt_filesfree_fops      },
 530         { .name =       "fstype",
 531           .fops =       &ldiskfs_osd_fstype_fops        },
 532         { .name =       "mntdev",
 533           .fops =       &ldiskfs_osd_mntdev_fops        },
 534         { .name =       "force_sync",
 535           .fops =       &ldiskfs_osd_force_sync_fops    },
 536         { .name =       "pdo",
 537           .fops =       &ldiskfs_osd_pdo_fops           },
 538         { .name =       "auto_scrub",
 539           .fops =       &ldiskfs_osd_auto_scrub_fops    },
 540         { .name =       "oi_scrub",
 541           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 542         { .name =       "read_cache_enable",
 543           .fops =       &ldiskfs_osd_cache_fops         },
 544         { .name =       "writethrough_cache_enable",
 545           .fops =       &ldiskfs_osd_wcache_fops        },
 546         { .name =       "readcache_max_filesize",
 547           .fops =       &ldiskfs_osd_readcache_fops     },
 548         { .name =       "lma_self_repair",
 549           .fops =       &ldiskfs_osd_lma_self_repair_fops       },
 550         { 0 }
 551 };
 552
 553 struct lprocfs_seq_vars lprocfs_osd_module_vars[] = {
 554         { .name =       "track_declares_assert",
 555           .fops =       &ldiskfs_osd_track_declares_assert_fops         },
 556         { 0 }
 557 };
 558
 559
 560 int osd_procfs_init(struct osd_device *osd, const char *name)
 561 {
 562         struct obd_type *type;
 563         int             rc;
 564         ENTRY;
 565
 566         if (osd->od_proc_entry)
 567                 RETURN(0);
 568
 569         /* at the moment there is no linkage between lu_type
 570          * and obd_type, so we lookup obd_type this way */
 571         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 572
 573         LASSERT(name != NULL);
 574         LASSERT(type != NULL);
 575
 576         /* Find the type procroot and add the proc entry for this device */
 577         osd->od_proc_entry = lprocfs_seq_register(name, type->typ_procroot,
 578                                                   lprocfs_osd_obd_vars,
 579                                                   &osd->od_dt_dev);
 580         if (IS_ERR(osd->od_proc_entry)) {
 581                 rc = PTR_ERR(osd->od_proc_entry);
 582                 CERROR("Error %d setting up lprocfs for %s\n",
 583                        rc, name);
 584                 osd->od_proc_entry = NULL;
 585                 GOTO(out, rc);
 586         }
 587
 588         rc = osd_stats_init(osd);
 589
 590         EXIT;
 591 out:
 592         if (rc)
 593                 osd_procfs_fini(osd);
 594         return rc;
 595 }
 596
 597 int osd_procfs_fini(struct osd_device *osd)
 598 {
 599         if (osd->od_stats)
 600                 lprocfs_free_stats(&osd->od_stats);
 601
 602         if (osd->od_proc_entry)
 603                 lprocfs_remove(&osd->od_proc_entry);
 604         RETURN(0);
 605 }
 606 #endif