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 static void display_brw_stats(struct seq_file *seq, char *name, char *units,
  82         struct obd_histogram *read, struct obd_histogram *write, int scale)
  83 {
  84         unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
  85         int i;
  86
  87         seq_printf(seq, "\n%26s read      |     write\n", " ");
  88         seq_printf(seq, "%-22s %-5s %% cum %% |  %-11s %% cum %%\n",
  89                    name, units, units);
  90
  91         read_tot = lprocfs_oh_sum(read);
  92         write_tot = lprocfs_oh_sum(write);
  93         for (i = 0; i < OBD_HIST_MAX; i++) {
  94                 r = read->oh_buckets[i];
  95                 w = write->oh_buckets[i];
  96                 read_cum += r;
  97                 write_cum += w;
  98                 if (read_cum == 0 && write_cum == 0)
  99                         continue;
 100
 101                 if (!scale)
 102                         seq_printf(seq, "%u", i);
 103                 else if (i < 10)
 104                         seq_printf(seq, "%u", scale << i);
 105                 else if (i < 20)
 106                         seq_printf(seq, "%uK", scale << (i-10));
 107                 else
 108                         seq_printf(seq, "%uM", scale << (i-20));
 109
 110                 seq_printf(seq, ":\t\t%10lu %3u %3u   | %4lu %3u %3u\n",
 111                            r, pct(r, read_tot), pct(read_cum, read_tot),
 112                            w, pct(w, write_tot), pct(write_cum, write_tot));
 113
 114                 if (read_cum == read_tot && write_cum == write_tot)
 115                         break;
 116         }
 117 }
 118
 119 static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
 120 {
 121         struct timespec64 now;
 122
 123         /* this sampling races with updates */
 124         ktime_get_real_ts64(&now);
 125
 126         seq_printf(seq, "snapshot_time:         %lld.%09ld (secs.nsecs)\n",
 127                    (s64)now.tv_sec, now.tv_nsec);
 128
 129         display_brw_stats(seq, "pages per bulk r/w", "rpcs",
 130                           &brw_stats->hist[BRW_R_PAGES],
 131                           &brw_stats->hist[BRW_W_PAGES], 1);
 132
 133         display_brw_stats(seq, "discontiguous pages", "rpcs",
 134                           &brw_stats->hist[BRW_R_DISCONT_PAGES],
 135                           &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
 136
 137         display_brw_stats(seq, "discontiguous blocks", "rpcs",
 138                           &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
 139                           &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
 140
 141         display_brw_stats(seq, "disk fragmented I/Os", "ios",
 142                           &brw_stats->hist[BRW_R_DIO_FRAGS],
 143                           &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
 144
 145         display_brw_stats(seq, "disk I/Os in flight", "ios",
 146                           &brw_stats->hist[BRW_R_RPC_HIST],
 147                           &brw_stats->hist[BRW_W_RPC_HIST], 0);
 148
 149         display_brw_stats(seq, "I/O time (1/1000s)", "ios",
 150                           &brw_stats->hist[BRW_R_IO_TIME],
 151                           &brw_stats->hist[BRW_W_IO_TIME],
 152                           jiffies_to_msecs(1000) / MSEC_PER_SEC);
 153
 154         display_brw_stats(seq, "disk I/O size", "ios",
 155                           &brw_stats->hist[BRW_R_DISK_IOSIZE],
 156                           &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
 157 }
 158
 159 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
 160 {
 161         struct osd_device *osd = seq->private;
 162
 163         brw_stats_show(seq, &osd->od_brw_stats);
 164
 165         return 0;
 166 }
 167
 168 static ssize_t osd_brw_stats_seq_write(struct file *file,
 169                                        const char __user *buf,
 170                                        size_t len, loff_t *off)
 171 {
 172         struct seq_file *seq = file->private_data;
 173         struct osd_device *osd = seq->private;
 174         int i;
 175
 176         for (i = 0; i < BRW_LAST; i++)
 177                 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
 178
 179         return len;
 180 }
 181
 182 LPROC_SEQ_FOPS(osd_brw_stats);
 183
 184 static int osd_stats_init(struct osd_device *osd)
 185 {
 186         int i, result;
 187         ENTRY;
 188
 189         for (i = 0; i < BRW_LAST; i++)
 190                 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
 191
 192         osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
 193         if (osd->od_stats != NULL) {
 194                 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
 195                                                 osd->od_stats);
 196                 if (result)
 197                         GOTO(out, result);
 198
 199                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
 200                                      LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
 201                                      "get_page", "usec");
 202                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
 203                                      LPROCFS_CNTR_AVGMINMAX,
 204                                      "get_page_failures", "num");
 205                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
 206                                      LPROCFS_CNTR_AVGMINMAX,
 207                                      "cache_access", "pages");
 208                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
 209                                      LPROCFS_CNTR_AVGMINMAX,
 210                                      "cache_hit", "pages");
 211                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
 212                                      LPROCFS_CNTR_AVGMINMAX,
 213                                      "cache_miss", "pages");
 214 #if OSD_THANDLE_STATS
 215                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
 216                                      LPROCFS_CNTR_AVGMINMAX,
 217                                      "thandle starting", "usec");
 218                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
 219                                      LPROCFS_CNTR_AVGMINMAX,
 220                                      "thandle open", "usec");
 221                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
 222                                      LPROCFS_CNTR_AVGMINMAX,
 223                                      "thandle closing", "usec");
 224 #endif
 225                 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
 226                                             0644, &osd_brw_stats_fops, osd);
 227         } else
 228                 result = -ENOMEM;
 229
 230 out:
 231         RETURN(result);
 232 }
 233
 234 static int ldiskfs_osd_fstype_seq_show(struct seq_file *m, void *data)
 235 {
 236         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 237
 238         LASSERT(osd != NULL);
 239         seq_puts(m, "ldiskfs\n");
 240         return 0;
 241 }
 242 LPROC_SEQ_FOPS_RO(ldiskfs_osd_fstype);
 243
 244 static int ldiskfs_osd_mntdev_seq_show(struct seq_file *m, void *data)
 245 {
 246         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 247
 248         LASSERT(osd != NULL);
 249         if (unlikely(osd->od_mnt == NULL))
 250                 return -EINPROGRESS;
 251
 252         seq_printf(m, "%s\n", osd->od_mntdev);
 253         return 0;
 254 }
 255 LPROC_SEQ_FOPS_RO(ldiskfs_osd_mntdev);
 256
 257 static int ldiskfs_osd_cache_seq_show(struct seq_file *m, void *data)
 258 {
 259         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 260
 261         LASSERT(osd != NULL);
 262         if (unlikely(osd->od_mnt == NULL))
 263                 return -EINPROGRESS;
 264
 265         seq_printf(m, "%u\n", osd->od_read_cache);
 266         return 0;
 267 }
 268
 269 static ssize_t
 270 ldiskfs_osd_cache_seq_write(struct file *file, const char __user *buffer,
 271                             size_t count, loff_t *off)
 272 {
 273         struct seq_file *m = file->private_data;
 274         struct dt_device *dt = m->private;
 275         struct osd_device *osd = osd_dt_dev(dt);
 276         bool val;
 277         int rc;
 278
 279         LASSERT(osd != NULL);
 280         if (unlikely(osd->od_mnt == NULL))
 281                 return -EINPROGRESS;
 282
 283         rc = kstrtobool_from_user(buffer, count, &val);
 284         if (rc)
 285                 return rc;
 286
 287         osd->od_read_cache = val;
 288         return count;
 289 }
 290 LPROC_SEQ_FOPS(ldiskfs_osd_cache);
 291
 292 static int ldiskfs_osd_wcache_seq_show(struct seq_file *m, void *data)
 293 {
 294         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 295
 296         LASSERT(osd != NULL);
 297         if (unlikely(osd->od_mnt == NULL))
 298                 return -EINPROGRESS;
 299
 300         seq_printf(m, "%u\n", osd->od_writethrough_cache);
 301         return 0;
 302 }
 303
 304 static ssize_t
 305 ldiskfs_osd_wcache_seq_write(struct file *file, const char __user *buffer,
 306                                 size_t count, loff_t *off)
 307 {
 308         struct seq_file *m = file->private_data;
 309         struct dt_device *dt = m->private;
 310         struct osd_device *osd = osd_dt_dev(dt);
 311         bool val;
 312         int rc;
 313
 314         LASSERT(osd != NULL);
 315         if (unlikely(osd->od_mnt == NULL))
 316                 return -EINPROGRESS;
 317
 318         rc = kstrtobool_from_user(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 __user *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_WR_ONLY(ldiskfs, osd_force_sync);
 350
 351 static int ldiskfs_osd_pdo_seq_show(struct seq_file *m, void *data)
 352 {
 353         seq_printf(m, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 354         return 0;
 355 }
 356
 357 static ssize_t
 358 ldiskfs_osd_pdo_seq_write(struct file *file, const char __user *buffer,
 359                                 size_t count, loff_t *off)
 360 {
 361         bool pdo;
 362         int rc;
 363
 364         rc = kstrtobool_from_user(buffer, count, &pdo);
 365         if (rc != 0)
 366                 return rc;
 367
 368         ldiskfs_pdo = pdo;
 369
 370         return count;
 371 }
 372 LPROC_SEQ_FOPS(ldiskfs_osd_pdo);
 373
 374 static int ldiskfs_osd_auto_scrub_seq_show(struct seq_file *m, void *data)
 375 {
 376         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 377
 378         LASSERT(dev != NULL);
 379         if (unlikely(dev->od_mnt == NULL))
 380                 return -EINPROGRESS;
 381
 382         seq_printf(m, "%lld\n", dev->od_auto_scrub_interval);
 383         return 0;
 384 }
 385
 386 static ssize_t
 387 ldiskfs_osd_auto_scrub_seq_write(struct file *file, const char __user *buffer,
 388                                         size_t count, loff_t *off)
 389 {
 390         struct seq_file *m = file->private_data;
 391         struct dt_device *dt = m->private;
 392         struct osd_device *dev = osd_dt_dev(dt);
 393         s64 val;
 394         int rc;
 395
 396         LASSERT(dev != NULL);
 397         if (unlikely(dev->od_mnt == NULL))
 398                 return -EINPROGRESS;
 399
 400         rc = kstrtoll_from_user(buffer, count, 0, &val);
 401         if (rc)
 402                 return rc;
 403
 404         dev->od_auto_scrub_interval = val;
 405         return count;
 406 }
 407 LPROC_SEQ_FOPS(ldiskfs_osd_auto_scrub);
 408
 409 static int ldiskfs_osd_full_scrub_ratio_seq_show(struct seq_file *m, void *data)
 410 {
 411         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 412
 413         LASSERT(dev != NULL);
 414         if (unlikely(dev->od_mnt == NULL))
 415                 return -EINPROGRESS;
 416
 417         seq_printf(m, "%llu\n", dev->od_full_scrub_ratio);
 418         return 0;
 419 }
 420
 421 static ssize_t
 422 ldiskfs_osd_full_scrub_ratio_seq_write(struct file *file,
 423                                        const char __user *buffer,
 424                                        size_t count, loff_t *off)
 425 {
 426         struct seq_file *m = file->private_data;
 427         struct dt_device *dt = m->private;
 428         struct osd_device *dev = osd_dt_dev(dt);
 429         s64 val;
 430         int rc;
 431
 432         LASSERT(dev != NULL);
 433         if (unlikely(dev->od_mnt == NULL))
 434                 return -EINPROGRESS;
 435
 436         rc = kstrtoll_from_user(buffer, count, 0, &val);
 437         if (rc != 0)
 438                 return rc;
 439
 440         if (val < 0)
 441                 return -EINVAL;
 442
 443         dev->od_full_scrub_ratio = val;
 444         return count;
 445 }
 446 LPROC_SEQ_FOPS(ldiskfs_osd_full_scrub_ratio);
 447
 448 static int ldiskfs_osd_full_scrub_threshold_rate_seq_show(struct seq_file *m,
 449                                                           void *data)
 450 {
 451         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 452
 453         LASSERT(dev != NULL);
 454         if (unlikely(dev->od_mnt == NULL))
 455                 return -EINPROGRESS;
 456
 457         seq_printf(m, "%llu (bad OI mappings/minute)\n",
 458                    dev->od_full_scrub_threshold_rate);
 459         return 0;
 460 }
 461
 462 static ssize_t
 463 ldiskfs_osd_full_scrub_threshold_rate_seq_write(struct file *file,
 464                                                 const char __user *buffer,
 465                                                 size_t count, loff_t *off)
 466 {
 467         struct seq_file *m = file->private_data;
 468         struct dt_device *dt = m->private;
 469         struct osd_device *dev = osd_dt_dev(dt);
 470         u64 val;
 471         int rc;
 472
 473         LASSERT(dev != NULL);
 474         if (unlikely(dev->od_mnt == NULL))
 475                 return -EINPROGRESS;
 476
 477         rc = kstrtoull_from_user(buffer, count, 0, &val);
 478         if (rc != 0)
 479                 return rc;
 480
 481         dev->od_full_scrub_threshold_rate = val;
 482         return count;
 483 }
 484 LPROC_SEQ_FOPS(ldiskfs_osd_full_scrub_threshold_rate);
 485
 486 static int
 487 ldiskfs_osd_track_declares_assert_seq_show(struct seq_file *m, void *data)
 488 {
 489         seq_printf(m, "%d\n", ldiskfs_track_declares_assert);
 490         return 0;
 491 }
 492
 493 static ssize_t
 494 ldiskfs_osd_track_declares_assert_seq_write(struct file *file,
 495                                                 const char __user *buffer,
 496                                                 size_t count, loff_t *off)
 497 {
 498         bool track_declares_assert;
 499         int rc;
 500
 501         rc = kstrtobool_from_user(buffer, count, &track_declares_assert);
 502         if (rc)
 503                 return rc;
 504
 505         ldiskfs_track_declares_assert = track_declares_assert;
 506
 507         return count;
 508 }
 509 LPROC_SEQ_FOPS(ldiskfs_osd_track_declares_assert);
 510
 511 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 512 {
 513         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 514
 515         LASSERT(dev != NULL);
 516         if (unlikely(dev->od_mnt == NULL))
 517                 return -EINPROGRESS;
 518
 519         osd_scrub_dump(m, dev);
 520         return 0;
 521 }
 522 LPROC_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 523
 524 static int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 525 {
 526         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 527
 528         LASSERT(osd != NULL);
 529         if (unlikely(osd->od_mnt == NULL))
 530                 return -EINPROGRESS;
 531
 532         seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
 533         return 0;
 534 }
 535
 536 static ssize_t
 537 ldiskfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
 538                                 size_t count, loff_t *off)
 539 {
 540         struct seq_file *m = file->private_data;
 541         struct dt_device *dt = m->private;
 542         struct osd_device *osd = osd_dt_dev(dt);
 543         s64 val;
 544         int rc;
 545
 546         LASSERT(osd != NULL);
 547         if (unlikely(osd->od_mnt == NULL))
 548                 return -EINPROGRESS;
 549
 550         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 551         if (rc)
 552                 return rc;
 553         if (val < 0)
 554                 return -ERANGE;
 555
 556         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 557                                          OSD_MAX_CACHE_SIZE : val;
 558         return count;
 559 }
 560 LPROC_SEQ_FOPS(ldiskfs_osd_readcache);
 561
 562 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 52, 0)
 563 static int ldiskfs_osd_index_in_idif_seq_show(struct seq_file *m, void *data)
 564 {
 565         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 566
 567         LASSERT(dev != NULL);
 568         if (unlikely(dev->od_mnt == NULL))
 569                 return -EINPROGRESS;
 570
 571         seq_printf(m, "%d\n", (int)(dev->od_index_in_idif));
 572         return 0;
 573 }
 574
 575 static ssize_t
 576 ldiskfs_osd_index_in_idif_seq_write(struct file *file,
 577                                     const char __user *buffer,
 578                                     size_t count, loff_t *off)
 579 {
 580         struct lu_env env;
 581         struct seq_file *m = file->private_data;
 582         struct dt_device *dt = m->private;
 583         struct osd_device *dev = osd_dt_dev(dt);
 584         struct lu_target *tgt;
 585         bool val;
 586         int rc;
 587
 588         LASSERT(dev != NULL);
 589         if (unlikely(dev->od_mnt == NULL))
 590                 return -EINPROGRESS;
 591
 592         rc = kstrtobool_from_user(buffer, count, &val);
 593         if (rc != 0)
 594                 return rc;
 595
 596         if (dev->od_index_in_idif) {
 597                 if (val)
 598                         return count;
 599
 600                 LCONSOLE_WARN("%s: OST-index in IDIF has been enabled, "
 601                               "it cannot be reverted back.\n", osd_name(dev));
 602                 return -EPERM;
 603         }
 604
 605         if (!val)
 606                 return count;
 607
 608         rc = lu_env_init(&env, LCT_DT_THREAD);
 609         if (rc != 0)
 610                 return rc;
 611
 612         tgt = dev->od_dt_dev.dd_lu_dev.ld_site->ls_tgt;
 613         tgt->lut_lsd.lsd_feature_rocompat |= OBD_ROCOMPAT_IDX_IN_IDIF;
 614         rc = tgt_server_data_update(&env, tgt, 1);
 615         lu_env_fini(&env);
 616         if (rc < 0)
 617                 return rc;
 618
 619         LCONSOLE_INFO("%s: enable OST-index in IDIF successfully, "
 620                       "it cannot be reverted back.\n", osd_name(dev));
 621
 622         dev->od_index_in_idif = 1;
 623         return count;
 624 }
 625 LPROC_SEQ_FOPS(ldiskfs_osd_index_in_idif);
 626
 627 int osd_register_proc_index_in_idif(struct osd_device *osd)
 628 {
 629         struct proc_dir_entry *proc;
 630
 631         proc = proc_create_data("index_in_idif", 0, osd->od_proc_entry,
 632                                 &ldiskfs_osd_index_in_idif_fops,
 633                                 &osd->od_dt_dev);
 634         if (proc == NULL)
 635                 return -ENOMEM;
 636
 637         return 0;
 638 }
 639 #endif
 640
 641 static int ldiskfs_osd_index_backup_seq_show(struct seq_file *m, void *data)
 642 {
 643         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 644
 645         LASSERT(dev != NULL);
 646         if (unlikely(dev->od_mnt == NULL))
 647                 return -EINPROGRESS;
 648
 649         seq_printf(m, "%d\n", dev->od_index_backup_policy);
 650         return 0;
 651 }
 652
 653 static ssize_t ldiskfs_osd_index_backup_seq_write(struct file *file,
 654                                                   const char __user *buffer,
 655                                                   size_t count, loff_t *off)
 656 {
 657         struct seq_file *m = file->private_data;
 658         struct dt_device *dt = m->private;
 659         struct osd_device *dev = osd_dt_dev(dt);
 660         int val;
 661         int rc;
 662
 663         LASSERT(dev != NULL);
 664         if (unlikely(dev->od_mnt == NULL))
 665                 return -EINPROGRESS;
 666
 667         rc = kstrtoint_from_user(buffer, count, 0, &val);
 668         if (rc)
 669                 return rc;
 670
 671         dev->od_index_backup_policy = val;
 672         return count;
 673 }
 674 LPROC_SEQ_FOPS(ldiskfs_osd_index_backup);
 675
 676 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_blksize);
 677 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytestotal);
 678 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesfree);
 679 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesavail);
 680 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filestotal);
 681 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filesfree);
 682
 683 struct lprocfs_vars lprocfs_osd_obd_vars[] = {
 684         { .name =       "blocksize",
 685           .fops =       &ldiskfs_dt_blksize_fops        },
 686         { .name =       "kbytestotal",
 687           .fops =       &ldiskfs_dt_kbytestotal_fops    },
 688         { .name =       "kbytesfree",
 689           .fops =       &ldiskfs_dt_kbytesfree_fops     },
 690         { .name =       "kbytesavail",
 691           .fops =       &ldiskfs_dt_kbytesavail_fops    },
 692         { .name =       "filestotal",
 693           .fops =       &ldiskfs_dt_filestotal_fops     },
 694         { .name =       "filesfree",
 695           .fops =       &ldiskfs_dt_filesfree_fops      },
 696         { .name =       "fstype",
 697           .fops =       &ldiskfs_osd_fstype_fops        },
 698         { .name =       "mntdev",
 699           .fops =       &ldiskfs_osd_mntdev_fops        },
 700         { .name =       "force_sync",
 701           .fops =       &ldiskfs_osd_force_sync_fops    },
 702         { .name =       "pdo",
 703           .fops =       &ldiskfs_osd_pdo_fops           },
 704         { .name =       "auto_scrub",
 705           .fops =       &ldiskfs_osd_auto_scrub_fops    },
 706         { .name =       "full_scrub_ratio",
 707           .fops =       &ldiskfs_osd_full_scrub_ratio_fops      },
 708         { .name =       "full_scrub_threshold_rate",
 709           .fops =       &ldiskfs_osd_full_scrub_threshold_rate_fops     },
 710         { .name =       "oi_scrub",
 711           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 712         { .name =       "read_cache_enable",
 713           .fops =       &ldiskfs_osd_cache_fops         },
 714         { .name =       "writethrough_cache_enable",
 715           .fops =       &ldiskfs_osd_wcache_fops        },
 716         { .name =       "readcache_max_filesize",
 717           .fops =       &ldiskfs_osd_readcache_fops     },
 718         { .name =       "index_backup",
 719           .fops =       &ldiskfs_osd_index_backup_fops  },
 720         { NULL }
 721 };
 722
 723 struct lprocfs_vars lprocfs_osd_module_vars[] = {
 724         { .name =       "track_declares_assert",
 725           .fops =       &ldiskfs_osd_track_declares_assert_fops         },
 726         { NULL }
 727 };
 728
 729
 730 int osd_procfs_init(struct osd_device *osd, const char *name)
 731 {
 732         struct obd_type *type;
 733         int             rc;
 734         ENTRY;
 735
 736         if (osd->od_proc_entry)
 737                 RETURN(0);
 738
 739         /* at the moment there is no linkage between lu_type
 740          * and obd_type, so we lookup obd_type this way */
 741         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 742
 743         LASSERT(name != NULL);
 744         LASSERT(type != NULL);
 745
 746         /* Find the type procroot and add the proc entry for this device */
 747         osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
 748                                               lprocfs_osd_obd_vars,
 749                                               &osd->od_dt_dev);
 750         if (IS_ERR(osd->od_proc_entry)) {
 751                 rc = PTR_ERR(osd->od_proc_entry);
 752                 CERROR("Error %d setting up lprocfs for %s\n",
 753                        rc, name);
 754                 osd->od_proc_entry = NULL;
 755                 GOTO(out, rc);
 756         }
 757
 758         rc = osd_stats_init(osd);
 759
 760         EXIT;
 761 out:
 762         if (rc)
 763                 osd_procfs_fini(osd);
 764         return rc;
 765 }
 766
 767 int osd_procfs_fini(struct osd_device *osd)
 768 {
 769         if (osd->od_stats)
 770                 lprocfs_free_stats(&osd->od_stats);
 771
 772         if (osd->od_proc_entry)
 773                 lprocfs_remove(&osd->od_proc_entry);
 774         RETURN(0);
 775 }
 776 #endif