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], 1);
 152
 153         display_brw_stats(seq, "disk I/O size", "ios",
 154                           &brw_stats->hist[BRW_R_DISK_IOSIZE],
 155                           &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
 156 }
 157
 158 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
 159 {
 160         struct osd_device *osd = seq->private;
 161
 162         brw_stats_show(seq, &osd->od_brw_stats);
 163
 164         return 0;
 165 }
 166
 167 static ssize_t osd_brw_stats_seq_write(struct file *file,
 168                                        const char __user *buf,
 169                                        size_t len, loff_t *off)
 170 {
 171         struct seq_file *seq = file->private_data;
 172         struct osd_device *osd = seq->private;
 173         int i;
 174
 175         for (i = 0; i < BRW_LAST; i++)
 176                 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
 177
 178         return len;
 179 }
 180
 181 LPROC_SEQ_FOPS(osd_brw_stats);
 182
 183 static int osd_stats_init(struct osd_device *osd)
 184 {
 185         int i, result;
 186         ENTRY;
 187
 188         for (i = 0; i < BRW_LAST; i++)
 189                 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
 190
 191         osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
 192         if (osd->od_stats != NULL) {
 193                 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
 194                                                 osd->od_stats);
 195                 if (result)
 196                         GOTO(out, result);
 197
 198                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
 199                                      LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
 200                                      "get_page", "usec");
 201                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
 202                                      LPROCFS_CNTR_AVGMINMAX,
 203                                      "get_page_failures", "num");
 204                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
 205                                      LPROCFS_CNTR_AVGMINMAX,
 206                                      "cache_access", "pages");
 207                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
 208                                      LPROCFS_CNTR_AVGMINMAX,
 209                                      "cache_hit", "pages");
 210                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
 211                                      LPROCFS_CNTR_AVGMINMAX,
 212                                      "cache_miss", "pages");
 213 #if OSD_THANDLE_STATS
 214                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
 215                                      LPROCFS_CNTR_AVGMINMAX,
 216                                      "thandle starting", "usec");
 217                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
 218                                      LPROCFS_CNTR_AVGMINMAX,
 219                                      "thandle open", "usec");
 220                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
 221                                      LPROCFS_CNTR_AVGMINMAX,
 222                                      "thandle closing", "usec");
 223 #endif
 224                 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
 225                                             0644, &osd_brw_stats_fops, osd);
 226         } else
 227                 result = -ENOMEM;
 228
 229 out:
 230         RETURN(result);
 231 }
 232
 233 static int ldiskfs_osd_fstype_seq_show(struct seq_file *m, void *data)
 234 {
 235         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 236
 237         LASSERT(osd != NULL);
 238         seq_puts(m, "ldiskfs\n");
 239         return 0;
 240 }
 241 LPROC_SEQ_FOPS_RO(ldiskfs_osd_fstype);
 242
 243 static int ldiskfs_osd_mntdev_seq_show(struct seq_file *m, void *data)
 244 {
 245         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 246
 247         LASSERT(osd != NULL);
 248         if (unlikely(osd->od_mnt == NULL))
 249                 return -EINPROGRESS;
 250
 251         seq_printf(m, "%s\n", osd->od_mntdev);
 252         return 0;
 253 }
 254 LPROC_SEQ_FOPS_RO(ldiskfs_osd_mntdev);
 255
 256 static int ldiskfs_osd_cache_seq_show(struct seq_file *m, void *data)
 257 {
 258         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 259
 260         LASSERT(osd != NULL);
 261         if (unlikely(osd->od_mnt == NULL))
 262                 return -EINPROGRESS;
 263
 264         seq_printf(m, "%u\n", osd->od_read_cache);
 265         return 0;
 266 }
 267
 268 static ssize_t
 269 ldiskfs_osd_cache_seq_write(struct file *file, const char __user *buffer,
 270                             size_t count, loff_t *off)
 271 {
 272         struct seq_file *m = file->private_data;
 273         struct dt_device *dt = m->private;
 274         struct osd_device *osd = osd_dt_dev(dt);
 275         bool val;
 276         int rc;
 277
 278         LASSERT(osd != NULL);
 279         if (unlikely(osd->od_mnt == NULL))
 280                 return -EINPROGRESS;
 281
 282         rc = kstrtobool_from_user(buffer, count, &val);
 283         if (rc)
 284                 return rc;
 285
 286         osd->od_read_cache = val;
 287         return count;
 288 }
 289 LPROC_SEQ_FOPS(ldiskfs_osd_cache);
 290
 291 static int ldiskfs_osd_wcache_seq_show(struct seq_file *m, void *data)
 292 {
 293         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 294
 295         LASSERT(osd != NULL);
 296         if (unlikely(osd->od_mnt == NULL))
 297                 return -EINPROGRESS;
 298
 299         seq_printf(m, "%u\n", osd->od_writethrough_cache);
 300         return 0;
 301 }
 302
 303 static ssize_t
 304 ldiskfs_osd_wcache_seq_write(struct file *file, const char __user *buffer,
 305                                 size_t count, loff_t *off)
 306 {
 307         struct seq_file *m = file->private_data;
 308         struct dt_device *dt = m->private;
 309         struct osd_device *osd = osd_dt_dev(dt);
 310         bool val;
 311         int rc;
 312
 313         LASSERT(osd != NULL);
 314         if (unlikely(osd->od_mnt == NULL))
 315                 return -EINPROGRESS;
 316
 317         rc = kstrtobool_from_user(buffer, count, &val);
 318         if (rc)
 319                 return rc;
 320
 321         osd->od_writethrough_cache = val;
 322         return count;
 323 }
 324 LPROC_SEQ_FOPS(ldiskfs_osd_wcache);
 325
 326 static ssize_t
 327 lprocfs_osd_force_sync_seq_write(struct file *file, const char __user *buffer,
 328                                         size_t count, loff_t *off)
 329 {
 330         struct seq_file   *m = file->private_data;
 331         struct dt_device  *dt = m->private;
 332         struct osd_device *osd = osd_dt_dev(dt);
 333         struct lu_env      env;
 334         int                rc;
 335
 336         LASSERT(osd != NULL);
 337         if (unlikely(osd->od_mnt == NULL))
 338                 return -EINPROGRESS;
 339
 340         rc = lu_env_init(&env, LCT_LOCAL);
 341         if (rc)
 342                 return rc;
 343         rc = dt_sync(&env, dt);
 344         lu_env_fini(&env);
 345
 346         return rc == 0 ? count : rc;
 347 }
 348 LPROC_SEQ_FOPS_WR_ONLY(ldiskfs, osd_force_sync);
 349
 350 static int ldiskfs_osd_pdo_seq_show(struct seq_file *m, void *data)
 351 {
 352         seq_printf(m, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 353         return 0;
 354 }
 355
 356 static ssize_t
 357 ldiskfs_osd_pdo_seq_write(struct file *file, const char __user *buffer,
 358                                 size_t count, loff_t *off)
 359 {
 360         bool pdo;
 361         int rc;
 362
 363         rc = kstrtobool_from_user(buffer, count, &pdo);
 364         if (rc != 0)
 365                 return rc;
 366
 367         ldiskfs_pdo = pdo;
 368
 369         return count;
 370 }
 371 LPROC_SEQ_FOPS(ldiskfs_osd_pdo);
 372
 373 static int ldiskfs_osd_auto_scrub_seq_show(struct seq_file *m, void *data)
 374 {
 375         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 376
 377         LASSERT(dev != NULL);
 378         if (unlikely(dev->od_mnt == NULL))
 379                 return -EINPROGRESS;
 380
 381         seq_printf(m, "%lld\n", dev->od_auto_scrub_interval);
 382         return 0;
 383 }
 384
 385 static ssize_t
 386 ldiskfs_osd_auto_scrub_seq_write(struct file *file, const char __user *buffer,
 387                                         size_t count, loff_t *off)
 388 {
 389         struct seq_file *m = file->private_data;
 390         struct dt_device *dt = m->private;
 391         struct osd_device *dev = osd_dt_dev(dt);
 392         s64 val;
 393         int rc;
 394
 395         LASSERT(dev != NULL);
 396         if (unlikely(dev->od_mnt == NULL))
 397                 return -EINPROGRESS;
 398
 399         rc = kstrtoll_from_user(buffer, count, 0, &val);
 400         if (rc)
 401                 return rc;
 402
 403         dev->od_auto_scrub_interval = val;
 404         return count;
 405 }
 406 LPROC_SEQ_FOPS(ldiskfs_osd_auto_scrub);
 407
 408 static int ldiskfs_osd_full_scrub_ratio_seq_show(struct seq_file *m, void *data)
 409 {
 410         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 411
 412         LASSERT(dev != NULL);
 413         if (unlikely(dev->od_mnt == NULL))
 414                 return -EINPROGRESS;
 415
 416         seq_printf(m, "%llu\n", dev->od_full_scrub_ratio);
 417         return 0;
 418 }
 419
 420 static ssize_t
 421 ldiskfs_osd_full_scrub_ratio_seq_write(struct file *file,
 422                                        const char __user *buffer,
 423                                        size_t count, loff_t *off)
 424 {
 425         struct seq_file *m = file->private_data;
 426         struct dt_device *dt = m->private;
 427         struct osd_device *dev = osd_dt_dev(dt);
 428         s64 val;
 429         int rc;
 430
 431         LASSERT(dev != NULL);
 432         if (unlikely(dev->od_mnt == NULL))
 433                 return -EINPROGRESS;
 434
 435         rc = kstrtoll_from_user(buffer, count, 0, &val);
 436         if (rc != 0)
 437                 return rc;
 438
 439         if (val < 0)
 440                 return -EINVAL;
 441
 442         dev->od_full_scrub_ratio = val;
 443         return count;
 444 }
 445 LPROC_SEQ_FOPS(ldiskfs_osd_full_scrub_ratio);
 446
 447 static int ldiskfs_osd_full_scrub_threshold_rate_seq_show(struct seq_file *m,
 448                                                           void *data)
 449 {
 450         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 451
 452         LASSERT(dev != NULL);
 453         if (unlikely(dev->od_mnt == NULL))
 454                 return -EINPROGRESS;
 455
 456         seq_printf(m, "%llu (bad OI mappings/minute)\n",
 457                    dev->od_full_scrub_threshold_rate);
 458         return 0;
 459 }
 460
 461 static ssize_t
 462 ldiskfs_osd_full_scrub_threshold_rate_seq_write(struct file *file,
 463                                                 const char __user *buffer,
 464                                                 size_t count, loff_t *off)
 465 {
 466         struct seq_file *m = file->private_data;
 467         struct dt_device *dt = m->private;
 468         struct osd_device *dev = osd_dt_dev(dt);
 469         u64 val;
 470         int rc;
 471
 472         LASSERT(dev != NULL);
 473         if (unlikely(dev->od_mnt == NULL))
 474                 return -EINPROGRESS;
 475
 476         rc = kstrtoull_from_user(buffer, count, 0, &val);
 477         if (rc != 0)
 478                 return rc;
 479
 480         dev->od_full_scrub_threshold_rate = val;
 481         return count;
 482 }
 483 LPROC_SEQ_FOPS(ldiskfs_osd_full_scrub_threshold_rate);
 484
 485 static int
 486 ldiskfs_osd_track_declares_assert_seq_show(struct seq_file *m, void *data)
 487 {
 488         seq_printf(m, "%d\n", ldiskfs_track_declares_assert);
 489         return 0;
 490 }
 491
 492 static ssize_t
 493 ldiskfs_osd_track_declares_assert_seq_write(struct file *file,
 494                                                 const char __user *buffer,
 495                                                 size_t count, loff_t *off)
 496 {
 497         bool track_declares_assert;
 498         int rc;
 499
 500         rc = kstrtobool_from_user(buffer, count, &track_declares_assert);
 501         if (rc)
 502                 return rc;
 503
 504         ldiskfs_track_declares_assert = track_declares_assert;
 505
 506         return count;
 507 }
 508 LPROC_SEQ_FOPS(ldiskfs_osd_track_declares_assert);
 509
 510 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 511 {
 512         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 513
 514         LASSERT(dev != NULL);
 515         if (unlikely(dev->od_mnt == NULL))
 516                 return -EINPROGRESS;
 517
 518         osd_scrub_dump(m, dev);
 519         return 0;
 520 }
 521 LPROC_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 522
 523 static int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 524 {
 525         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 526
 527         LASSERT(osd != NULL);
 528         if (unlikely(osd->od_mnt == NULL))
 529                 return -EINPROGRESS;
 530
 531         seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
 532         return 0;
 533 }
 534
 535 static ssize_t
 536 ldiskfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
 537                                 size_t count, loff_t *off)
 538 {
 539         struct seq_file *m = file->private_data;
 540         struct dt_device *dt = m->private;
 541         struct osd_device *osd = osd_dt_dev(dt);
 542         s64 val;
 543         int rc;
 544
 545         LASSERT(osd != NULL);
 546         if (unlikely(osd->od_mnt == NULL))
 547                 return -EINPROGRESS;
 548
 549         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 550         if (rc)
 551                 return rc;
 552         if (val < 0)
 553                 return -ERANGE;
 554
 555         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 556                                          OSD_MAX_CACHE_SIZE : val;
 557         return count;
 558 }
 559 LPROC_SEQ_FOPS(ldiskfs_osd_readcache);
 560
 561 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 52, 0)
 562 static int ldiskfs_osd_index_in_idif_seq_show(struct seq_file *m, void *data)
 563 {
 564         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 565
 566         LASSERT(dev != NULL);
 567         if (unlikely(dev->od_mnt == NULL))
 568                 return -EINPROGRESS;
 569
 570         seq_printf(m, "%d\n", (int)(dev->od_index_in_idif));
 571         return 0;
 572 }
 573
 574 static ssize_t
 575 ldiskfs_osd_index_in_idif_seq_write(struct file *file,
 576                                     const char __user *buffer,
 577                                     size_t count, loff_t *off)
 578 {
 579         struct lu_env env;
 580         struct seq_file *m = file->private_data;
 581         struct dt_device *dt = m->private;
 582         struct osd_device *dev = osd_dt_dev(dt);
 583         struct lu_target *tgt;
 584         bool val;
 585         int rc;
 586
 587         LASSERT(dev != NULL);
 588         if (unlikely(dev->od_mnt == NULL))
 589                 return -EINPROGRESS;
 590
 591         rc = kstrtobool_from_user(buffer, count, &val);
 592         if (rc != 0)
 593                 return rc;
 594
 595         if (dev->od_index_in_idif) {
 596                 if (val)
 597                         return count;
 598
 599                 LCONSOLE_WARN("%s: OST-index in IDIF has been enabled, "
 600                               "it cannot be reverted back.\n", osd_name(dev));
 601                 return -EPERM;
 602         }
 603
 604         if (!val)
 605                 return count;
 606
 607         rc = lu_env_init(&env, LCT_DT_THREAD);
 608         if (rc != 0)
 609                 return rc;
 610
 611         tgt = dev->od_dt_dev.dd_lu_dev.ld_site->ls_tgt;
 612         tgt->lut_lsd.lsd_feature_rocompat |= OBD_ROCOMPAT_IDX_IN_IDIF;
 613         rc = tgt_server_data_update(&env, tgt, 1);
 614         lu_env_fini(&env);
 615         if (rc < 0)
 616                 return rc;
 617
 618         LCONSOLE_INFO("%s: enable OST-index in IDIF successfully, "
 619                       "it cannot be reverted back.\n", osd_name(dev));
 620
 621         dev->od_index_in_idif = 1;
 622         return count;
 623 }
 624 LPROC_SEQ_FOPS(ldiskfs_osd_index_in_idif);
 625
 626 int osd_register_proc_index_in_idif(struct osd_device *osd)
 627 {
 628         struct proc_dir_entry *proc;
 629
 630         proc = proc_create_data("index_in_idif", 0, osd->od_proc_entry,
 631                                 &ldiskfs_osd_index_in_idif_fops,
 632                                 &osd->od_dt_dev);
 633         if (proc == NULL)
 634                 return -ENOMEM;
 635
 636         return 0;
 637 }
 638 #endif
 639
 640 static int ldiskfs_osd_index_backup_seq_show(struct seq_file *m, void *data)
 641 {
 642         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 643
 644         LASSERT(dev != NULL);
 645         if (unlikely(dev->od_mnt == NULL))
 646                 return -EINPROGRESS;
 647
 648         seq_printf(m, "%d\n", dev->od_index_backup_policy);
 649         return 0;
 650 }
 651
 652 static ssize_t ldiskfs_osd_index_backup_seq_write(struct file *file,
 653                                                   const char __user *buffer,
 654                                                   size_t count, loff_t *off)
 655 {
 656         struct seq_file *m = file->private_data;
 657         struct dt_device *dt = m->private;
 658         struct osd_device *dev = osd_dt_dev(dt);
 659         int val;
 660         int rc;
 661
 662         LASSERT(dev != NULL);
 663         if (unlikely(dev->od_mnt == NULL))
 664                 return -EINPROGRESS;
 665
 666         rc = kstrtoint_from_user(buffer, count, 0, &val);
 667         if (rc)
 668                 return rc;
 669
 670         dev->od_index_backup_policy = val;
 671         return count;
 672 }
 673 LPROC_SEQ_FOPS(ldiskfs_osd_index_backup);
 674
 675 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_blksize);
 676 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytestotal);
 677 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesfree);
 678 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesavail);
 679 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filestotal);
 680 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filesfree);
 681
 682 struct lprocfs_vars lprocfs_osd_obd_vars[] = {
 683         { .name =       "blocksize",
 684           .fops =       &ldiskfs_dt_blksize_fops        },
 685         { .name =       "kbytestotal",
 686           .fops =       &ldiskfs_dt_kbytestotal_fops    },
 687         { .name =       "kbytesfree",
 688           .fops =       &ldiskfs_dt_kbytesfree_fops     },
 689         { .name =       "kbytesavail",
 690           .fops =       &ldiskfs_dt_kbytesavail_fops    },
 691         { .name =       "filestotal",
 692           .fops =       &ldiskfs_dt_filestotal_fops     },
 693         { .name =       "filesfree",
 694           .fops =       &ldiskfs_dt_filesfree_fops      },
 695         { .name =       "fstype",
 696           .fops =       &ldiskfs_osd_fstype_fops        },
 697         { .name =       "mntdev",
 698           .fops =       &ldiskfs_osd_mntdev_fops        },
 699         { .name =       "force_sync",
 700           .fops =       &ldiskfs_osd_force_sync_fops    },
 701         { .name =       "pdo",
 702           .fops =       &ldiskfs_osd_pdo_fops           },
 703         { .name =       "auto_scrub",
 704           .fops =       &ldiskfs_osd_auto_scrub_fops    },
 705         { .name =       "full_scrub_ratio",
 706           .fops =       &ldiskfs_osd_full_scrub_ratio_fops      },
 707         { .name =       "full_scrub_threshold_rate",
 708           .fops =       &ldiskfs_osd_full_scrub_threshold_rate_fops     },
 709         { .name =       "oi_scrub",
 710           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 711         { .name =       "read_cache_enable",
 712           .fops =       &ldiskfs_osd_cache_fops         },
 713         { .name =       "writethrough_cache_enable",
 714           .fops =       &ldiskfs_osd_wcache_fops        },
 715         { .name =       "readcache_max_filesize",
 716           .fops =       &ldiskfs_osd_readcache_fops     },
 717         { .name =       "index_backup",
 718           .fops =       &ldiskfs_osd_index_backup_fops  },
 719         { NULL }
 720 };
 721
 722 struct lprocfs_vars lprocfs_osd_module_vars[] = {
 723         { .name =       "track_declares_assert",
 724           .fops =       &ldiskfs_osd_track_declares_assert_fops         },
 725         { NULL }
 726 };
 727
 728
 729 int osd_procfs_init(struct osd_device *osd, const char *name)
 730 {
 731         struct obd_type *type;
 732         int             rc;
 733         ENTRY;
 734
 735         if (osd->od_proc_entry)
 736                 RETURN(0);
 737
 738         /* at the moment there is no linkage between lu_type
 739          * and obd_type, so we lookup obd_type this way */
 740         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 741
 742         LASSERT(name != NULL);
 743         LASSERT(type != NULL);
 744
 745         /* Find the type procroot and add the proc entry for this device */
 746         osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
 747                                               lprocfs_osd_obd_vars,
 748                                               &osd->od_dt_dev);
 749         if (IS_ERR(osd->od_proc_entry)) {
 750                 rc = PTR_ERR(osd->od_proc_entry);
 751                 CERROR("Error %d setting up lprocfs for %s\n",
 752                        rc, name);
 753                 osd->od_proc_entry = NULL;
 754                 GOTO(out, rc);
 755         }
 756
 757         rc = osd_stats_init(osd);
 758
 759         EXIT;
 760 out:
 761         if (rc)
 762                 osd_procfs_fini(osd);
 763         return rc;
 764 }
 765
 766 int osd_procfs_fini(struct osd_device *osd)
 767 {
 768         if (osd->od_stats)
 769                 lprocfs_free_stats(&osd->od_stats);
 770
 771         if (osd->od_proc_entry)
 772                 lprocfs_remove(&osd->od_proc_entry);
 773         RETURN(0);
 774 }
 775 #endif