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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2015, 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/osd/osd_lproc.c
  33  *
  34  * Author: Mikhail Pershin <tappro@sun.com>
  35  */
  36
  37 #define DEBUG_SUBSYSTEM S_OSD
  38
  39 #include <lprocfs_status.h>
  40
  41 #include "osd_internal.h"
  42
  43 #ifdef CONFIG_PROC_FS
  44
  45 void osd_brw_stats_update(struct osd_device *osd, struct osd_iobuf *iobuf)
  46 {
  47         struct brw_stats *s = &osd->od_brw_stats;
  48         sector_t         *last_block = NULL;
  49         struct page     **pages = iobuf->dr_pages;
  50         struct page      *last_page = NULL;
  51         unsigned long     discont_pages = 0;
  52         unsigned long     discont_blocks = 0;
  53         sector_t         *blocks = iobuf->dr_blocks;
  54         int               i, nr_pages = iobuf->dr_npages;
  55         int               blocks_per_page;
  56         int               rw = iobuf->dr_rw;
  57
  58         if (unlikely(nr_pages == 0))
  59                 return;
  60
  61         blocks_per_page = PAGE_SIZE >> osd_sb(osd)->s_blocksize_bits;
  62
  63         lprocfs_oh_tally_log2(&s->hist[BRW_R_PAGES+rw], nr_pages);
  64
  65         while (nr_pages-- > 0) {
  66                 if (last_page && (*pages)->index != (last_page->index + 1))
  67                         discont_pages++;
  68                 last_page = *pages;
  69                 pages++;
  70                 for (i = 0; i < blocks_per_page; i++) {
  71                         if (last_block && *blocks != (*last_block + 1))
  72                                 discont_blocks++;
  73                         last_block = blocks++;
  74                 }
  75         }
  76
  77         lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_PAGES+rw], discont_pages);
  78         lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_BLOCKS+rw], discont_blocks);
  79 }
  80
  81 #define pct(a, b) (b ? a * 100 / b : 0)
  82
  83 static void display_brw_stats(struct seq_file *seq, char *name, char *units,
  84         struct obd_histogram *read, struct obd_histogram *write, int scale)
  85 {
  86         unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
  87         int i;
  88
  89         seq_printf(seq, "\n%26s read      |     write\n", " ");
  90         seq_printf(seq, "%-22s %-5s %% cum %% |  %-11s %% cum %%\n",
  91                    name, units, units);
  92
  93         read_tot = lprocfs_oh_sum(read);
  94         write_tot = lprocfs_oh_sum(write);
  95         for (i = 0; i < OBD_HIST_MAX; i++) {
  96                 r = read->oh_buckets[i];
  97                 w = write->oh_buckets[i];
  98                 read_cum += r;
  99                 write_cum += w;
 100                 if (read_cum == 0 && write_cum == 0)
 101                         continue;
 102
 103                 if (!scale)
 104                         seq_printf(seq, "%u", i);
 105                 else if (i < 10)
 106                         seq_printf(seq, "%u", scale << i);
 107                 else if (i < 20)
 108                         seq_printf(seq, "%uK", scale << (i-10));
 109                 else
 110                         seq_printf(seq, "%uM", scale << (i-20));
 111
 112                 seq_printf(seq, ":\t\t%10lu %3lu %3lu   | %4lu %3lu %3lu\n",
 113                            r, pct(r, read_tot), pct(read_cum, read_tot),
 114                            w, pct(w, write_tot), pct(write_cum, write_tot));
 115
 116                 if (read_cum == read_tot && write_cum == write_tot)
 117                         break;
 118         }
 119 }
 120
 121 static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
 122 {
 123         struct timespec64 now;
 124
 125         /* this sampling races with updates */
 126         ktime_get_real_ts64(&now);
 127
 128         seq_printf(seq, "snapshot_time:         %lld.%09ld (secs.nsecs)\n",
 129                    (s64)now.tv_sec, now.tv_nsec);
 130
 131         display_brw_stats(seq, "pages per bulk r/w", "rpcs",
 132                           &brw_stats->hist[BRW_R_PAGES],
 133                           &brw_stats->hist[BRW_W_PAGES], 1);
 134
 135         display_brw_stats(seq, "discontiguous pages", "rpcs",
 136                           &brw_stats->hist[BRW_R_DISCONT_PAGES],
 137                           &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
 138
 139         display_brw_stats(seq, "discontiguous blocks", "rpcs",
 140                           &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
 141                           &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
 142
 143         display_brw_stats(seq, "disk fragmented I/Os", "ios",
 144                           &brw_stats->hist[BRW_R_DIO_FRAGS],
 145                           &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
 146
 147         display_brw_stats(seq, "disk I/Os in flight", "ios",
 148                           &brw_stats->hist[BRW_R_RPC_HIST],
 149                           &brw_stats->hist[BRW_W_RPC_HIST], 0);
 150
 151         display_brw_stats(seq, "I/O time (1/1000s)", "ios",
 152                           &brw_stats->hist[BRW_R_IO_TIME],
 153                           &brw_stats->hist[BRW_W_IO_TIME],
 154                           jiffies_to_msecs(1000) / MSEC_PER_SEC);
 155
 156         display_brw_stats(seq, "disk I/O size", "ios",
 157                           &brw_stats->hist[BRW_R_DISK_IOSIZE],
 158                           &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
 159 }
 160
 161 #undef pct
 162
 163 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
 164 {
 165         struct osd_device *osd = seq->private;
 166
 167         brw_stats_show(seq, &osd->od_brw_stats);
 168
 169         return 0;
 170 }
 171
 172 static ssize_t osd_brw_stats_seq_write(struct file *file,
 173                                        const char __user *buf,
 174                                        size_t len, loff_t *off)
 175 {
 176         struct seq_file *seq = file->private_data;
 177         struct osd_device *osd = seq->private;
 178         int i;
 179
 180         for (i = 0; i < BRW_LAST; i++)
 181                 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
 182
 183         return len;
 184 }
 185
 186 LPROC_SEQ_FOPS(osd_brw_stats);
 187
 188 static int osd_stats_init(struct osd_device *osd)
 189 {
 190         int i, result;
 191         ENTRY;
 192
 193         for (i = 0; i < BRW_LAST; i++)
 194                 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
 195
 196         osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
 197         if (osd->od_stats != NULL) {
 198                 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
 199                                                 osd->od_stats);
 200                 if (result)
 201                         GOTO(out, result);
 202
 203                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
 204                                      LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
 205                                      "get_page", "usec");
 206                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
 207                                      LPROCFS_CNTR_AVGMINMAX,
 208                                      "get_page_failures", "num");
 209                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
 210                                      LPROCFS_CNTR_AVGMINMAX,
 211                                      "cache_access", "pages");
 212                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
 213                                      LPROCFS_CNTR_AVGMINMAX,
 214                                      "cache_hit", "pages");
 215                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
 216                                      LPROCFS_CNTR_AVGMINMAX,
 217                                      "cache_miss", "pages");
 218 #if OSD_THANDLE_STATS
 219                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
 220                                      LPROCFS_CNTR_AVGMINMAX,
 221                                      "thandle starting", "usec");
 222                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
 223                                      LPROCFS_CNTR_AVGMINMAX,
 224                                      "thandle open", "usec");
 225                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
 226                                      LPROCFS_CNTR_AVGMINMAX,
 227                                      "thandle closing", "usec");
 228 #endif
 229                 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
 230                                             0644, &osd_brw_stats_fops, osd);
 231         } else
 232                 result = -ENOMEM;
 233
 234 out:
 235         RETURN(result);
 236 }
 237
 238 static int ldiskfs_osd_fstype_seq_show(struct seq_file *m, void *data)
 239 {
 240         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 241
 242         LASSERT(osd != NULL);
 243         seq_puts(m, "ldiskfs\n");
 244         return 0;
 245 }
 246 LPROC_SEQ_FOPS_RO(ldiskfs_osd_fstype);
 247
 248 static int ldiskfs_osd_mntdev_seq_show(struct seq_file *m, void *data)
 249 {
 250         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 251
 252         LASSERT(osd != NULL);
 253         if (unlikely(osd->od_mnt == NULL))
 254                 return -EINPROGRESS;
 255
 256         seq_printf(m, "%s\n", osd->od_mntdev);
 257         return 0;
 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         seq_printf(m, "%u\n", osd->od_read_cache);
 270         return 0;
 271 }
 272
 273 static ssize_t
 274 ldiskfs_osd_cache_seq_write(struct file *file, const char __user *buffer,
 275                             size_t count, loff_t *off)
 276 {
 277         struct seq_file *m = file->private_data;
 278         struct dt_device *dt = m->private;
 279         struct osd_device *osd = osd_dt_dev(dt);
 280         bool val;
 281         int rc;
 282
 283         LASSERT(osd != NULL);
 284         if (unlikely(osd->od_mnt == NULL))
 285                 return -EINPROGRESS;
 286
 287         rc = kstrtobool_from_user(buffer, count, &val);
 288         if (rc)
 289                 return rc;
 290
 291         osd->od_read_cache = val;
 292         return count;
 293 }
 294 LPROC_SEQ_FOPS(ldiskfs_osd_cache);
 295
 296 static int ldiskfs_osd_wcache_seq_show(struct seq_file *m, void *data)
 297 {
 298         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 299
 300         LASSERT(osd != NULL);
 301         if (unlikely(osd->od_mnt == NULL))
 302                 return -EINPROGRESS;
 303
 304         seq_printf(m, "%u\n", osd->od_writethrough_cache);
 305         return 0;
 306 }
 307
 308 static ssize_t
 309 ldiskfs_osd_wcache_seq_write(struct file *file, const char __user *buffer,
 310                                 size_t count, loff_t *off)
 311 {
 312         struct seq_file *m = file->private_data;
 313         struct dt_device *dt = m->private;
 314         struct osd_device *osd = osd_dt_dev(dt);
 315         bool val;
 316         int rc;
 317
 318         LASSERT(osd != NULL);
 319         if (unlikely(osd->od_mnt == NULL))
 320                 return -EINPROGRESS;
 321
 322         rc = kstrtobool_from_user(buffer, count, &val);
 323         if (rc)
 324                 return rc;
 325
 326         osd->od_writethrough_cache = val;
 327         return count;
 328 }
 329 LPROC_SEQ_FOPS(ldiskfs_osd_wcache);
 330
 331 static ssize_t
 332 lprocfs_osd_force_sync_seq_write(struct file *file, const char __user *buffer,
 333                                         size_t count, loff_t *off)
 334 {
 335         struct seq_file   *m = file->private_data;
 336         struct dt_device  *dt = m->private;
 337         struct osd_device *osd = osd_dt_dev(dt);
 338         struct lu_env      env;
 339         int                rc;
 340
 341         LASSERT(osd != NULL);
 342         if (unlikely(osd->od_mnt == NULL))
 343                 return -EINPROGRESS;
 344
 345         rc = lu_env_init(&env, LCT_LOCAL);
 346         if (rc)
 347                 return rc;
 348         rc = dt_sync(&env, dt);
 349         lu_env_fini(&env);
 350
 351         return rc == 0 ? count : rc;
 352 }
 353 LPROC_SEQ_FOPS_WR_ONLY(ldiskfs, osd_force_sync);
 354
 355 static int ldiskfs_osd_pdo_seq_show(struct seq_file *m, void *data)
 356 {
 357         seq_printf(m, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 358         return 0;
 359 }
 360
 361 static ssize_t
 362 ldiskfs_osd_pdo_seq_write(struct file *file, const char __user *buffer,
 363                                 size_t count, loff_t *off)
 364 {
 365         bool pdo;
 366         int rc;
 367
 368         rc = kstrtobool_from_user(buffer, count, &pdo);
 369         if (rc != 0)
 370                 return rc;
 371
 372         ldiskfs_pdo = pdo;
 373
 374         return count;
 375 }
 376 LPROC_SEQ_FOPS(ldiskfs_osd_pdo);
 377
 378 static int ldiskfs_osd_auto_scrub_seq_show(struct seq_file *m, void *data)
 379 {
 380         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 381
 382         LASSERT(dev != NULL);
 383         if (unlikely(dev->od_mnt == NULL))
 384                 return -EINPROGRESS;
 385
 386         seq_printf(m, "%lld\n", dev->od_auto_scrub_interval);
 387         return 0;
 388 }
 389
 390 static ssize_t
 391 ldiskfs_osd_auto_scrub_seq_write(struct file *file, const char __user *buffer,
 392                                         size_t count, loff_t *off)
 393 {
 394         struct seq_file *m = file->private_data;
 395         struct dt_device *dt = m->private;
 396         struct osd_device *dev = osd_dt_dev(dt);
 397         s64 val;
 398         int rc;
 399
 400         LASSERT(dev != NULL);
 401         if (unlikely(dev->od_mnt == NULL))
 402                 return -EINPROGRESS;
 403
 404         rc = kstrtoll_from_user(buffer, count, 0, &val);
 405         if (rc)
 406                 return rc;
 407
 408         dev->od_auto_scrub_interval = val;
 409         return count;
 410 }
 411 LPROC_SEQ_FOPS(ldiskfs_osd_auto_scrub);
 412
 413 static int ldiskfs_osd_full_scrub_ratio_seq_show(struct seq_file *m, void *data)
 414 {
 415         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 416
 417         LASSERT(dev != NULL);
 418         if (unlikely(dev->od_mnt == NULL))
 419                 return -EINPROGRESS;
 420
 421         seq_printf(m, "%llu\n", dev->od_full_scrub_ratio);
 422         return 0;
 423 }
 424
 425 static ssize_t
 426 ldiskfs_osd_full_scrub_ratio_seq_write(struct file *file,
 427                                        const char __user *buffer,
 428                                        size_t count, loff_t *off)
 429 {
 430         struct seq_file *m = file->private_data;
 431         struct dt_device *dt = m->private;
 432         struct osd_device *dev = osd_dt_dev(dt);
 433         s64 val;
 434         int rc;
 435
 436         LASSERT(dev != NULL);
 437         if (unlikely(dev->od_mnt == NULL))
 438                 return -EINPROGRESS;
 439
 440         rc = kstrtoll_from_user(buffer, count, 0, &val);
 441         if (rc != 0)
 442                 return rc;
 443
 444         if (val < 0)
 445                 return -EINVAL;
 446
 447         dev->od_full_scrub_ratio = val;
 448         return count;
 449 }
 450 LPROC_SEQ_FOPS(ldiskfs_osd_full_scrub_ratio);
 451
 452 static int ldiskfs_osd_full_scrub_threshold_rate_seq_show(struct seq_file *m,
 453                                                           void *data)
 454 {
 455         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 456
 457         LASSERT(dev != NULL);
 458         if (unlikely(dev->od_mnt == NULL))
 459                 return -EINPROGRESS;
 460
 461         seq_printf(m, "%llu (bad OI mappings/minute)\n",
 462                    dev->od_full_scrub_threshold_rate);
 463         return 0;
 464 }
 465
 466 static ssize_t
 467 ldiskfs_osd_full_scrub_threshold_rate_seq_write(struct file *file,
 468                                                 const char __user *buffer,
 469                                                 size_t count, loff_t *off)
 470 {
 471         struct seq_file *m = file->private_data;
 472         struct dt_device *dt = m->private;
 473         struct osd_device *dev = osd_dt_dev(dt);
 474         u64 val;
 475         int rc;
 476
 477         LASSERT(dev != NULL);
 478         if (unlikely(dev->od_mnt == NULL))
 479                 return -EINPROGRESS;
 480
 481         rc = kstrtoull_from_user(buffer, count, 0, &val);
 482         if (rc != 0)
 483                 return rc;
 484
 485         dev->od_full_scrub_threshold_rate = val;
 486         return count;
 487 }
 488 LPROC_SEQ_FOPS(ldiskfs_osd_full_scrub_threshold_rate);
 489
 490 static int
 491 ldiskfs_osd_track_declares_assert_seq_show(struct seq_file *m, void *data)
 492 {
 493         seq_printf(m, "%d\n", ldiskfs_track_declares_assert);
 494         return 0;
 495 }
 496
 497 static ssize_t
 498 ldiskfs_osd_track_declares_assert_seq_write(struct file *file,
 499                                                 const char __user *buffer,
 500                                                 size_t count, loff_t *off)
 501 {
 502         bool track_declares_assert;
 503         int rc;
 504
 505         rc = kstrtobool_from_user(buffer, count, &track_declares_assert);
 506         if (rc)
 507                 return rc;
 508
 509         ldiskfs_track_declares_assert = track_declares_assert;
 510
 511         return count;
 512 }
 513 LPROC_SEQ_FOPS(ldiskfs_osd_track_declares_assert);
 514
 515 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 516 {
 517         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 518
 519         LASSERT(dev != NULL);
 520         if (unlikely(dev->od_mnt == NULL))
 521                 return -EINPROGRESS;
 522
 523         osd_scrub_dump(m, dev);
 524         return 0;
 525 }
 526 LPROC_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 527
 528 static int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 529 {
 530         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 531
 532         LASSERT(osd != NULL);
 533         if (unlikely(osd->od_mnt == NULL))
 534                 return -EINPROGRESS;
 535
 536         seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
 537         return 0;
 538 }
 539
 540 static ssize_t
 541 ldiskfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
 542                                 size_t count, loff_t *off)
 543 {
 544         struct seq_file *m = file->private_data;
 545         struct dt_device *dt = m->private;
 546         struct osd_device *osd = osd_dt_dev(dt);
 547         s64 val;
 548         int rc;
 549
 550         LASSERT(osd != NULL);
 551         if (unlikely(osd->od_mnt == NULL))
 552                 return -EINPROGRESS;
 553
 554         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 555         if (rc)
 556                 return rc;
 557         if (val < 0)
 558                 return -ERANGE;
 559
 560         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 561                                          OSD_MAX_CACHE_SIZE : val;
 562         return count;
 563 }
 564 LPROC_SEQ_FOPS(ldiskfs_osd_readcache);
 565
 566 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 52, 0)
 567 static int ldiskfs_osd_index_in_idif_seq_show(struct seq_file *m, void *data)
 568 {
 569         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 570
 571         LASSERT(dev != NULL);
 572         if (unlikely(dev->od_mnt == NULL))
 573                 return -EINPROGRESS;
 574
 575         seq_printf(m, "%d\n", (int)(dev->od_index_in_idif));
 576         return 0;
 577 }
 578
 579 static ssize_t
 580 ldiskfs_osd_index_in_idif_seq_write(struct file *file,
 581                                     const char __user *buffer,
 582                                     size_t count, loff_t *off)
 583 {
 584         struct lu_env env;
 585         struct seq_file *m = file->private_data;
 586         struct dt_device *dt = m->private;
 587         struct osd_device *dev = osd_dt_dev(dt);
 588         struct lu_target *tgt;
 589         bool val;
 590         int rc;
 591
 592         LASSERT(dev != NULL);
 593         if (unlikely(dev->od_mnt == NULL))
 594                 return -EINPROGRESS;
 595
 596         rc = kstrtobool_from_user(buffer, count, &val);
 597         if (rc != 0)
 598                 return rc;
 599
 600         if (dev->od_index_in_idif) {
 601                 if (val)
 602                         return count;
 603
 604                 LCONSOLE_WARN("%s: OST-index in IDIF has been enabled, "
 605                               "it cannot be reverted back.\n", osd_name(dev));
 606                 return -EPERM;
 607         }
 608
 609         if (!val)
 610                 return count;
 611
 612         rc = lu_env_init(&env, LCT_DT_THREAD);
 613         if (rc != 0)
 614                 return rc;
 615
 616         tgt = dev->od_dt_dev.dd_lu_dev.ld_site->ls_tgt;
 617         tgt->lut_lsd.lsd_feature_rocompat |= OBD_ROCOMPAT_IDX_IN_IDIF;
 618         rc = tgt_server_data_update(&env, tgt, 1);
 619         lu_env_fini(&env);
 620         if (rc < 0)
 621                 return rc;
 622
 623         LCONSOLE_INFO("%s: enable OST-index in IDIF successfully, "
 624                       "it cannot be reverted back.\n", osd_name(dev));
 625
 626         dev->od_index_in_idif = 1;
 627         return count;
 628 }
 629 LPROC_SEQ_FOPS(ldiskfs_osd_index_in_idif);
 630
 631 int osd_register_proc_index_in_idif(struct osd_device *osd)
 632 {
 633         struct proc_dir_entry *proc;
 634
 635         proc = proc_create_data("index_in_idif", 0, osd->od_proc_entry,
 636                                 &ldiskfs_osd_index_in_idif_fops,
 637                                 &osd->od_dt_dev);
 638         if (proc == NULL)
 639                 return -ENOMEM;
 640
 641         return 0;
 642 }
 643 #endif
 644
 645 static int ldiskfs_osd_index_backup_seq_show(struct seq_file *m, void *data)
 646 {
 647         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 648
 649         LASSERT(dev != NULL);
 650         if (unlikely(dev->od_mnt == NULL))
 651                 return -EINPROGRESS;
 652
 653         seq_printf(m, "%d\n", dev->od_index_backup_policy);
 654         return 0;
 655 }
 656
 657 static ssize_t ldiskfs_osd_index_backup_seq_write(struct file *file,
 658                                                   const char __user *buffer,
 659                                                   size_t count, loff_t *off)
 660 {
 661         struct seq_file *m = file->private_data;
 662         struct dt_device *dt = m->private;
 663         struct osd_device *dev = osd_dt_dev(dt);
 664         int val;
 665         int rc;
 666
 667         LASSERT(dev != NULL);
 668         if (unlikely(dev->od_mnt == NULL))
 669                 return -EINPROGRESS;
 670
 671         rc = kstrtoint_from_user(buffer, count, 0, &val);
 672         if (rc)
 673                 return rc;
 674
 675         dev->od_index_backup_policy = val;
 676         return count;
 677 }
 678 LPROC_SEQ_FOPS(ldiskfs_osd_index_backup);
 679
 680 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_blksize);
 681 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytestotal);
 682 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesfree);
 683 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesavail);
 684 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filestotal);
 685 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filesfree);
 686
 687 struct lprocfs_vars lprocfs_osd_obd_vars[] = {
 688         { .name =       "blocksize",
 689           .fops =       &ldiskfs_dt_blksize_fops        },
 690         { .name =       "kbytestotal",
 691           .fops =       &ldiskfs_dt_kbytestotal_fops    },
 692         { .name =       "kbytesfree",
 693           .fops =       &ldiskfs_dt_kbytesfree_fops     },
 694         { .name =       "kbytesavail",
 695           .fops =       &ldiskfs_dt_kbytesavail_fops    },
 696         { .name =       "filestotal",
 697           .fops =       &ldiskfs_dt_filestotal_fops     },
 698         { .name =       "filesfree",
 699           .fops =       &ldiskfs_dt_filesfree_fops      },
 700         { .name =       "fstype",
 701           .fops =       &ldiskfs_osd_fstype_fops        },
 702         { .name =       "mntdev",
 703           .fops =       &ldiskfs_osd_mntdev_fops        },
 704         { .name =       "force_sync",
 705           .fops =       &ldiskfs_osd_force_sync_fops    },
 706         { .name =       "pdo",
 707           .fops =       &ldiskfs_osd_pdo_fops           },
 708         { .name =       "auto_scrub",
 709           .fops =       &ldiskfs_osd_auto_scrub_fops    },
 710         { .name =       "full_scrub_ratio",
 711           .fops =       &ldiskfs_osd_full_scrub_ratio_fops      },
 712         { .name =       "full_scrub_threshold_rate",
 713           .fops =       &ldiskfs_osd_full_scrub_threshold_rate_fops     },
 714         { .name =       "oi_scrub",
 715           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 716         { .name =       "read_cache_enable",
 717           .fops =       &ldiskfs_osd_cache_fops         },
 718         { .name =       "writethrough_cache_enable",
 719           .fops =       &ldiskfs_osd_wcache_fops        },
 720         { .name =       "readcache_max_filesize",
 721           .fops =       &ldiskfs_osd_readcache_fops     },
 722         { .name =       "index_backup",
 723           .fops =       &ldiskfs_osd_index_backup_fops  },
 724         { NULL }
 725 };
 726
 727 struct lprocfs_vars lprocfs_osd_module_vars[] = {
 728         { .name =       "track_declares_assert",
 729           .fops =       &ldiskfs_osd_track_declares_assert_fops         },
 730         { NULL }
 731 };
 732
 733
 734 int osd_procfs_init(struct osd_device *osd, const char *name)
 735 {
 736         struct obd_type *type;
 737         int             rc;
 738         ENTRY;
 739
 740         if (osd->od_proc_entry)
 741                 RETURN(0);
 742
 743         /* at the moment there is no linkage between lu_type
 744          * and obd_type, so we lookup obd_type this way */
 745         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 746
 747         LASSERT(name != NULL);
 748         LASSERT(type != NULL);
 749
 750         /* Find the type procroot and add the proc entry for this device */
 751         osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
 752                                               lprocfs_osd_obd_vars,
 753                                               &osd->od_dt_dev);
 754         if (IS_ERR(osd->od_proc_entry)) {
 755                 rc = PTR_ERR(osd->od_proc_entry);
 756                 CERROR("Error %d setting up lprocfs for %s\n",
 757                        rc, name);
 758                 osd->od_proc_entry = NULL;
 759                 GOTO(out, rc);
 760         }
 761
 762         rc = osd_stats_init(osd);
 763
 764         EXIT;
 765 out:
 766         if (rc)
 767                 osd_procfs_fini(osd);
 768         return rc;
 769 }
 770
 771 int osd_procfs_fini(struct osd_device *osd)
 772 {
 773         if (osd->od_stats)
 774                 lprocfs_free_stats(&osd->od_stats);
 775
 776         if (osd->od_proc_entry)
 777                 lprocfs_remove(&osd->od_proc_entry);
 778         RETURN(0);
 779 }
 780 #endif