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  *
  31  * lustre/osd/osd_lproc.c
  32  *
  33  * Author: Mikhail Pershin <tappro@sun.com>
  34  */
  35
  36 #define DEBUG_SUBSYSTEM S_OSD
  37
  38 #include <lprocfs_status.h>
  39
  40 #include "osd_internal.h"
  41
  42 #ifdef CONFIG_PROC_FS
  43
  44 void osd_brw_stats_update(struct osd_device *osd, struct osd_iobuf *iobuf)
  45 {
  46         struct brw_stats *s = &osd->od_brw_stats;
  47         sector_t         *last_block = NULL;
  48         struct page     **pages = iobuf->dr_pages;
  49         struct page      *last_page = NULL;
  50         unsigned long     discont_pages = 0;
  51         unsigned long     discont_blocks = 0;
  52         sector_t         *blocks = iobuf->dr_blocks;
  53         int               i, nr_pages = iobuf->dr_npages;
  54         int               blocks_per_page;
  55         int               rw = iobuf->dr_rw;
  56
  57         if (unlikely(nr_pages == 0))
  58                 return;
  59
  60         blocks_per_page = PAGE_SIZE >> osd_sb(osd)->s_blocksize_bits;
  61
  62         lprocfs_oh_tally_log2(&s->hist[BRW_R_PAGES+rw], nr_pages);
  63
  64         while (nr_pages-- > 0) {
  65                 if (last_page && (*pages)->index != (last_page->index + 1))
  66                         discont_pages++;
  67                 last_page = *pages;
  68                 pages++;
  69                 for (i = 0; i < blocks_per_page; i++) {
  70                         if (last_block && *blocks != (*last_block + 1))
  71                                 discont_blocks++;
  72                         last_block = blocks++;
  73                 }
  74         }
  75
  76         lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_PAGES+rw], discont_pages);
  77         lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_BLOCKS+rw], discont_blocks);
  78 }
  79
  80 static void display_brw_stats(struct seq_file *seq, char *name, char *units,
  81         struct obd_histogram *read, struct obd_histogram *write, int scale)
  82 {
  83         unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
  84         int i;
  85
  86         seq_printf(seq, "\n%26s read      |     write\n", " ");
  87         seq_printf(seq, "%-22s %-5s %% cum %% |  %-11s %% cum %%\n",
  88                    name, units, units);
  89
  90         read_tot = lprocfs_oh_sum(read);
  91         write_tot = lprocfs_oh_sum(write);
  92         for (i = 0; i < OBD_HIST_MAX; i++) {
  93                 r = read->oh_buckets[i];
  94                 w = write->oh_buckets[i];
  95                 read_cum += r;
  96                 write_cum += w;
  97                 if (read_cum == 0 && write_cum == 0)
  98                         continue;
  99
 100                 if (!scale)
 101                         seq_printf(seq, "%u", i);
 102                 else if (i < 10)
 103                         seq_printf(seq, "%u", scale << i);
 104                 else if (i < 20)
 105                         seq_printf(seq, "%uK", scale << (i-10));
 106                 else
 107                         seq_printf(seq, "%uM", scale << (i-20));
 108
 109                 seq_printf(seq, ":\t\t%10lu %3u %3u   | %4lu %3u %3u\n",
 110                            r, pct(r, read_tot), pct(read_cum, read_tot),
 111                            w, pct(w, write_tot), pct(write_cum, write_tot));
 112
 113                 if (read_cum == read_tot && write_cum == write_tot)
 114                         break;
 115         }
 116 }
 117
 118 static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
 119 {
 120         struct timespec64 now;
 121
 122         /* this sampling races with updates */
 123         ktime_get_real_ts64(&now);
 124
 125         seq_printf(seq, "snapshot_time:         %lld.%09ld (secs.nsecs)\n",
 126                    (s64)now.tv_sec, now.tv_nsec);
 127
 128         display_brw_stats(seq, "pages per bulk r/w", "rpcs",
 129                           &brw_stats->hist[BRW_R_PAGES],
 130                           &brw_stats->hist[BRW_W_PAGES], 1);
 131
 132         display_brw_stats(seq, "discontiguous pages", "rpcs",
 133                           &brw_stats->hist[BRW_R_DISCONT_PAGES],
 134                           &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
 135
 136         display_brw_stats(seq, "discontiguous blocks", "rpcs",
 137                           &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
 138                           &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
 139
 140         display_brw_stats(seq, "disk fragmented I/Os", "ios",
 141                           &brw_stats->hist[BRW_R_DIO_FRAGS],
 142                           &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
 143
 144         display_brw_stats(seq, "disk I/Os in flight", "ios",
 145                           &brw_stats->hist[BRW_R_RPC_HIST],
 146                           &brw_stats->hist[BRW_W_RPC_HIST], 0);
 147
 148         display_brw_stats(seq, "I/O time (1/1000s)", "ios",
 149                           &brw_stats->hist[BRW_R_IO_TIME],
 150                           &brw_stats->hist[BRW_W_IO_TIME], 1);
 151
 152         display_brw_stats(seq, "disk I/O size", "ios",
 153                           &brw_stats->hist[BRW_R_DISK_IOSIZE],
 154                           &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
 155 }
 156
 157 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
 158 {
 159         struct osd_device *osd = seq->private;
 160
 161         brw_stats_show(seq, &osd->od_brw_stats);
 162
 163         return 0;
 164 }
 165
 166 static ssize_t osd_brw_stats_seq_write(struct file *file,
 167                                        const char __user *buf,
 168                                        size_t len, loff_t *off)
 169 {
 170         struct seq_file *seq = file->private_data;
 171         struct osd_device *osd = seq->private;
 172         int i;
 173
 174         for (i = 0; i < BRW_LAST; i++)
 175                 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
 176
 177         return len;
 178 }
 179
 180 LPROC_SEQ_FOPS(osd_brw_stats);
 181
 182 static int osd_stats_init(struct osd_device *osd)
 183 {
 184         int i, result;
 185         ENTRY;
 186
 187         for (i = 0; i < BRW_LAST; i++)
 188                 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
 189
 190         osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
 191         if (osd->od_stats != NULL) {
 192                 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
 193                                                 osd->od_stats);
 194                 if (result)
 195                         GOTO(out, result);
 196
 197                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
 198                                      LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
 199                                      "get_page", "usec");
 200                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
 201                                      LPROCFS_CNTR_AVGMINMAX,
 202                                      "get_page_failures", "num");
 203                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
 204                                      LPROCFS_CNTR_AVGMINMAX,
 205                                      "cache_access", "pages");
 206                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
 207                                      LPROCFS_CNTR_AVGMINMAX,
 208                                      "cache_hit", "pages");
 209                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
 210                                      LPROCFS_CNTR_AVGMINMAX,
 211                                      "cache_miss", "pages");
 212 #if OSD_THANDLE_STATS
 213                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
 214                                      LPROCFS_CNTR_AVGMINMAX,
 215                                      "thandle starting", "usec");
 216                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
 217                                      LPROCFS_CNTR_AVGMINMAX,
 218                                      "thandle open", "usec");
 219                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
 220                                      LPROCFS_CNTR_AVGMINMAX,
 221                                      "thandle closing", "usec");
 222 #endif
 223                 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
 224                                             0644, &osd_brw_stats_fops, osd);
 225         } else
 226                 result = -ENOMEM;
 227
 228 out:
 229         RETURN(result);
 230 }
 231
 232 static ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
 233                            char *buf)
 234 {
 235         return sprintf(buf, "ldiskfs\n");
 236 }
 237 LUSTRE_RO_ATTR(fstype);
 238
 239 static ssize_t mntdev_show(struct kobject *kobj, struct attribute *attr,
 240                            char *buf)
 241 {
 242         struct dt_device *dt = container_of(kobj, struct dt_device,
 243                                             dd_kobj);
 244         struct osd_device *osd = osd_dt_dev(dt);
 245
 246         LASSERT(osd);
 247         if (unlikely(!osd->od_mnt))
 248                 return -EINPROGRESS;
 249
 250         return sprintf(buf, "%s\n", osd->od_mntdev);
 251 }
 252 LUSTRE_RO_ATTR(mntdev);
 253
 254 static ssize_t read_cache_enable_show(struct kobject *kobj,
 255                                       struct attribute *attr,
 256                                       char *buf)
 257 {
 258         struct dt_device *dt = container_of(kobj, struct dt_device,
 259                                             dd_kobj);
 260         struct osd_device *osd = osd_dt_dev(dt);
 261
 262         LASSERT(osd);
 263         if (unlikely(!osd->od_mnt))
 264                 return -EINPROGRESS;
 265
 266         return sprintf(buf, "%u\n", osd->od_read_cache);
 267 }
 268
 269 static ssize_t read_cache_enable_store(struct kobject *kobj,
 270                                        struct attribute *attr,
 271                                        const char *buffer, size_t count)
 272 {
 273         struct dt_device *dt = container_of(kobj, struct dt_device,
 274                                             dd_kobj);
 275         struct osd_device *osd = osd_dt_dev(dt);
 276         bool val;
 277         int rc;
 278
 279         LASSERT(osd);
 280         if (unlikely(!osd->od_mnt))
 281                 return -EINPROGRESS;
 282
 283         rc = kstrtobool(buffer, &val);
 284         if (rc)
 285                 return rc;
 286
 287         osd->od_read_cache = !!val;
 288         return count;
 289 }
 290 LUSTRE_RW_ATTR(read_cache_enable);
 291
 292 static ssize_t writethrough_cache_enable_show(struct kobject *kobj,
 293                                               struct attribute *attr,
 294                                               char *buf)
 295 {
 296         struct dt_device *dt = container_of(kobj, struct dt_device,
 297                                             dd_kobj);
 298         struct osd_device *osd = osd_dt_dev(dt);
 299
 300         LASSERT(osd);
 301         if (unlikely(!osd->od_mnt))
 302                 return -EINPROGRESS;
 303
 304         return sprintf(buf, "%u\n", osd->od_writethrough_cache);
 305 }
 306
 307 static ssize_t writethrough_cache_enable_store(struct kobject *kobj,
 308                                                struct attribute *attr,
 309                                                const char *buffer,
 310                                                size_t count)
 311 {
 312         struct dt_device *dt = container_of(kobj, struct dt_device,
 313                                             dd_kobj);
 314         struct osd_device *osd = osd_dt_dev(dt);
 315         bool val;
 316         int rc;
 317
 318         LASSERT(osd);
 319         if (unlikely(!osd->od_mnt))
 320                 return -EINPROGRESS;
 321
 322         rc = kstrtobool(buffer, &val);
 323         if (rc)
 324                 return rc;
 325
 326         osd->od_writethrough_cache = !!val;
 327         return count;
 328 }
 329 LUSTRE_RW_ATTR(writethrough_cache_enable);
 330
 331 static ssize_t fallocate_zero_blocks_show(struct kobject *kobj,
 332                                           struct attribute *attr,
 333                                           char *buf)
 334 {
 335         struct dt_device *dt = container_of(kobj, struct dt_device,
 336                                             dd_kobj);
 337         struct osd_device *osd = osd_dt_dev(dt);
 338
 339         LASSERT(osd);
 340         if (unlikely(!osd->od_mnt))
 341                 return -EINPROGRESS;
 342
 343         return scnprintf(buf, PAGE_SIZE, "%d\n", osd->od_fallocate_zero_blocks);
 344 }
 345
 346 /*
 347  * Set how fallocate() interacts with the backing filesystem:
 348  * -1: fallocate is disabled and returns -EOPNOTSUPP
 349  *  0: fallocate allocates unwritten extents (like ext4)
 350  *  1: fallocate zeroes allocated extents on disk
 351  */
 352 static ssize_t fallocate_zero_blocks_store(struct kobject *kobj,
 353                                            struct attribute *attr,
 354                                            const char *buffer, size_t count)
 355 {
 356         struct dt_device *dt = container_of(kobj, struct dt_device,
 357                                             dd_kobj);
 358         struct osd_device *osd = osd_dt_dev(dt);
 359         long val;
 360         int rc;
 361
 362         LASSERT(osd);
 363         if (unlikely(!osd->od_mnt))
 364                 return -EINPROGRESS;
 365
 366         rc = kstrtol(buffer, 0, &val);
 367         if (rc)
 368                 return rc;
 369
 370         if (val < -1 || val > 1)
 371                 return -EINVAL;
 372
 373         osd->od_fallocate_zero_blocks = val;
 374         return count;
 375 }
 376 LUSTRE_RW_ATTR(fallocate_zero_blocks);
 377
 378 ssize_t force_sync_store(struct kobject *kobj, struct attribute *attr,
 379                          const char *buffer, size_t count)
 380 {
 381         struct dt_device *dt = container_of(kobj, struct dt_device,
 382                                             dd_kobj);
 383         struct osd_device *osd = osd_dt_dev(dt);
 384         struct lu_env env;
 385         int rc;
 386
 387         LASSERT(osd);
 388         if (unlikely(!osd->od_mnt))
 389                 return -EINPROGRESS;
 390
 391         rc = lu_env_init(&env, LCT_LOCAL);
 392         if (rc)
 393                 return rc;
 394
 395         rc = dt_sync(&env, dt);
 396         lu_env_fini(&env);
 397
 398         return rc == 0 ? count : rc;
 399 }
 400 LUSTRE_WO_ATTR(force_sync);
 401
 402 static ssize_t nonrotational_show(struct kobject *kobj, struct attribute *attr,
 403                                   char *buf)
 404 {
 405         struct dt_device *dt = container_of(kobj, struct dt_device,
 406                                             dd_kobj);
 407         struct osd_device *osd = osd_dt_dev(dt);
 408
 409         LASSERT(osd);
 410         if (unlikely(!osd->od_mnt))
 411                 return -EINPROGRESS;
 412
 413         return sprintf(buf, "%u\n", osd->od_nonrotational);
 414 }
 415
 416 static ssize_t nonrotational_store(struct kobject *kobj,
 417                                    struct attribute *attr, const char *buffer,
 418                                    size_t count)
 419 {
 420         struct dt_device *dt = container_of(kobj, struct dt_device,
 421                                             dd_kobj);
 422         struct osd_device *osd = osd_dt_dev(dt);
 423         bool val;
 424         int rc;
 425
 426         LASSERT(osd);
 427         if (unlikely(!osd->od_mnt))
 428                 return -EINPROGRESS;
 429
 430         rc = kstrtobool(buffer, &val);
 431         if (rc)
 432                 return rc;
 433
 434         osd->od_nonrotational = val;
 435         return count;
 436 }
 437 LUSTRE_RW_ATTR(nonrotational);
 438
 439 static ssize_t pdo_show(struct kobject *kobj, struct attribute *attr,
 440                         char *buf)
 441 {
 442         return sprintf(buf, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 443 }
 444
 445 static ssize_t pdo_store(struct kobject *kobj, struct attribute *attr,
 446                          const char *buffer, size_t count)
 447 {
 448         bool pdo;
 449         int rc;
 450
 451         rc = kstrtobool(buffer, &pdo);
 452         if (rc != 0)
 453                 return rc;
 454
 455         ldiskfs_pdo = pdo;
 456
 457         return count;
 458 }
 459 LUSTRE_RW_ATTR(pdo);
 460
 461 static ssize_t auto_scrub_show(struct kobject *kobj, struct attribute *attr,
 462                                char *buf)
 463 {
 464         struct dt_device *dt = container_of(kobj, struct dt_device,
 465                                             dd_kobj);
 466         struct osd_device *dev = osd_dt_dev(dt);
 467
 468         LASSERT(dev);
 469         if (unlikely(!dev->od_mnt))
 470                 return -EINPROGRESS;
 471
 472         return sprintf(buf, "%lld\n", dev->od_auto_scrub_interval);
 473 }
 474
 475 static ssize_t auto_scrub_store(struct kobject *kobj, struct attribute *attr,
 476                                 const char *buffer, size_t count)
 477 {
 478         struct dt_device *dt = container_of(kobj, struct dt_device,
 479                                             dd_kobj);
 480         struct osd_device *dev = osd_dt_dev(dt);
 481         s64 val;
 482         int rc;
 483
 484         LASSERT(dev);
 485         if (unlikely(!dev->od_mnt))
 486                 return -EINPROGRESS;
 487
 488         rc = kstrtoll(buffer, 0, &val);
 489         if (rc)
 490                 return rc;
 491
 492         dev->od_auto_scrub_interval = val;
 493         return count;
 494 }
 495 LUSTRE_RW_ATTR(auto_scrub);
 496
 497 static ssize_t full_scrub_ratio_show(struct kobject *kobj,
 498                                      struct attribute *attr,
 499                                      char *buf)
 500 {
 501         struct dt_device *dt = container_of(kobj, struct dt_device,
 502                                             dd_kobj);
 503         struct osd_device *dev = osd_dt_dev(dt);
 504
 505         LASSERT(dev);
 506         if (unlikely(!dev->od_mnt))
 507                 return -EINPROGRESS;
 508
 509         return sprintf(buf, "%llu\n", dev->od_full_scrub_ratio);
 510 }
 511
 512 static ssize_t full_scrub_ratio_store(struct kobject *kobj,
 513                                       struct attribute *attr,
 514                                       const char *buffer, size_t count)
 515 {
 516         struct dt_device *dt = container_of(kobj, struct dt_device,
 517                                             dd_kobj);
 518         struct osd_device *dev = osd_dt_dev(dt);
 519         s64 val;
 520         int rc;
 521
 522         LASSERT(dev);
 523         if (unlikely(!dev->od_mnt))
 524                 return -EINPROGRESS;
 525
 526         rc = kstrtoll(buffer, 0, &val);
 527         if (rc)
 528                 return rc;
 529
 530         if (val < 0)
 531                 return -EINVAL;
 532
 533         dev->od_full_scrub_ratio = val;
 534         return count;
 535 }
 536 LUSTRE_RW_ATTR(full_scrub_ratio);
 537
 538 static ssize_t full_scrub_threshold_rate_show(struct kobject *kobj,
 539                                               struct attribute *attr,
 540                                               char *buf)
 541 {
 542         struct dt_device *dt = container_of(kobj, struct dt_device,
 543                                             dd_kobj);
 544         struct osd_device *dev = osd_dt_dev(dt);
 545
 546         LASSERT(dev);
 547         if (unlikely(!dev->od_mnt))
 548                 return -EINPROGRESS;
 549
 550         return sprintf(buf, "%llu (bad OI mappings/minute)\n",
 551                        dev->od_full_scrub_threshold_rate);
 552 }
 553
 554 static ssize_t full_scrub_threshold_rate_store(struct kobject *kobj,
 555                                                struct attribute *attr,
 556                                                const char *buffer, size_t count)
 557 {
 558         struct dt_device *dt = container_of(kobj, struct dt_device,
 559                                             dd_kobj);
 560         struct osd_device *dev = osd_dt_dev(dt);
 561         u64 val;
 562         int rc;
 563
 564         LASSERT(dev);
 565         if (unlikely(!dev->od_mnt))
 566                 return -EINPROGRESS;
 567
 568         rc = kstrtoull(buffer, 0, &val);
 569         if (rc != 0)
 570                 return rc;
 571
 572         dev->od_full_scrub_threshold_rate = val;
 573         return count;
 574 }
 575 LUSTRE_RW_ATTR(full_scrub_threshold_rate);
 576
 577 static ssize_t extent_bytes_allocation_show(struct kobject *kobj,
 578                                             struct attribute *attr, char *buf)
 579 {
 580         struct dt_device *dt = container_of(kobj, struct dt_device,
 581                                             dd_kobj);
 582         struct osd_device *dev = osd_dt_dev(dt);
 583         int i;
 584         unsigned int min = (unsigned int)(~0), cur;
 585
 586         for_each_online_cpu(i) {
 587                 cur = *per_cpu_ptr(dev->od_extent_bytes_percpu, i);
 588                 if (cur < min)
 589                         min = cur;
 590         }
 591         return snprintf(buf, PAGE_SIZE, "%u\n", min);
 592 }
 593 LUSTRE_RO_ATTR(extent_bytes_allocation);
 594
 595 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 596 {
 597         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 598
 599         LASSERT(dev != NULL);
 600         if (unlikely(dev->od_mnt == NULL))
 601                 return -EINPROGRESS;
 602
 603         osd_scrub_dump(m, dev);
 604         return 0;
 605 }
 606
 607 LDEBUGFS_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 608
 609 static int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 610 {
 611         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 612
 613         LASSERT(osd != NULL);
 614         if (unlikely(osd->od_mnt == NULL))
 615                 return -EINPROGRESS;
 616
 617         seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
 618         return 0;
 619 }
 620
 621 static ssize_t
 622 ldiskfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
 623                                 size_t count, loff_t *off)
 624 {
 625         struct seq_file *m = file->private_data;
 626         struct dt_device *dt = m->private;
 627         struct osd_device *osd = osd_dt_dev(dt);
 628         char kernbuf[22] = "";
 629         u64 val;
 630         int rc;
 631
 632         LASSERT(osd != NULL);
 633         if (unlikely(osd->od_mnt == NULL))
 634                 return -EINPROGRESS;
 635
 636         if (count >= sizeof(kernbuf))
 637                 return -EINVAL;
 638
 639         if (copy_from_user(kernbuf, buffer, count))
 640                 return -EFAULT;
 641         kernbuf[count] = 0;
 642
 643         rc = sysfs_memparse(kernbuf, count, &val, "B");
 644         if (rc < 0)
 645                 return rc;
 646
 647         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 648                                          OSD_MAX_CACHE_SIZE : val;
 649         return count;
 650 }
 651
 652 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_readcache);
 653
 654 static int ldiskfs_osd_readcache_max_io_seq_show(struct seq_file *m, void *data)
 655 {
 656         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 657
 658         LASSERT(osd != NULL);
 659         if (unlikely(osd->od_mnt == NULL))
 660                 return -EINPROGRESS;
 661
 662         seq_printf(m, "%lu\n", osd->od_readcache_max_iosize >> 20);
 663         return 0;
 664 }
 665
 666 static ssize_t
 667 ldiskfs_osd_readcache_max_io_seq_write(struct file *file,
 668                                        const char __user *buffer,
 669                                        size_t count, loff_t *off)
 670 {
 671         struct seq_file *m = file->private_data;
 672         struct dt_device *dt = m->private;
 673         struct osd_device *osd = osd_dt_dev(dt);
 674         char kernbuf[22] = "";
 675         u64 val;
 676         int rc;
 677
 678         LASSERT(osd != NULL);
 679         if (unlikely(osd->od_mnt == NULL))
 680                 return -EINPROGRESS;
 681
 682         if (count >= sizeof(kernbuf))
 683                 return -EINVAL;
 684
 685         if (copy_from_user(kernbuf, buffer, count))
 686                 return -EFAULT;
 687         kernbuf[count] = 0;
 688
 689         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 690         if (rc < 0)
 691                 return rc;
 692
 693         if (val > PTLRPC_MAX_BRW_SIZE)
 694                 return -ERANGE;
 695         osd->od_readcache_max_iosize = val;
 696         return count;
 697 }
 698
 699 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_readcache_max_io);
 700
 701 static int ldiskfs_osd_writethrough_max_io_seq_show(struct seq_file *m,
 702                                                     void *data)
 703 {
 704         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 705
 706         LASSERT(osd != NULL);
 707         if (unlikely(osd->od_mnt == NULL))
 708                 return -EINPROGRESS;
 709
 710         seq_printf(m, "%lu\n", osd->od_writethrough_max_iosize >> 20);
 711         return 0;
 712 }
 713
 714 static ssize_t
 715 ldiskfs_osd_writethrough_max_io_seq_write(struct file *file,
 716                                        const char __user *buffer,
 717                                        size_t count, loff_t *off)
 718 {
 719         struct seq_file *m = file->private_data;
 720         struct dt_device *dt = m->private;
 721         struct osd_device *osd = osd_dt_dev(dt);
 722         char kernbuf[22] = "";
 723         u64 val;
 724         int rc;
 725
 726         LASSERT(osd != NULL);
 727         if (unlikely(osd->od_mnt == NULL))
 728                 return -EINPROGRESS;
 729
 730         if (count >= sizeof(kernbuf))
 731                 return -EINVAL;
 732
 733         if (copy_from_user(kernbuf, buffer, count))
 734                 return -EFAULT;
 735         kernbuf[count] = 0;
 736
 737         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 738         if (rc < 0)
 739                 return rc;
 740
 741         if (val > PTLRPC_MAX_BRW_SIZE)
 742                 return -ERANGE;
 743         osd->od_writethrough_max_iosize = val;
 744         return count;
 745 }
 746
 747 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_writethrough_max_io);
 748
 749 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 52, 0)
 750 static ssize_t index_in_idif_show(struct kobject *kobj, struct attribute *attr,
 751                                   char *buf)
 752 {
 753         struct dt_device *dt = container_of(kobj, struct dt_device,
 754                                             dd_kobj);
 755         struct osd_device *dev = osd_dt_dev(dt);
 756
 757         LASSERT(dev);
 758         if (unlikely(!dev->od_mnt))
 759                 return -EINPROGRESS;
 760
 761         return sprintf(buf, "%d\n", (int)(dev->od_index_in_idif));
 762 }
 763
 764 static ssize_t index_in_idif_store(struct kobject *kobj,
 765                                    struct attribute *attr,
 766                                    const char *buffer, size_t count)
 767 {
 768         struct dt_device *dt = container_of(kobj, struct dt_device,
 769                                             dd_kobj);
 770         struct osd_device *dev = osd_dt_dev(dt);
 771         struct lu_target *tgt;
 772         struct lu_env env;
 773         bool val;
 774         int rc;
 775
 776         LASSERT(dev);
 777         if (unlikely(!dev->od_mnt))
 778                 return -EINPROGRESS;
 779
 780         rc = kstrtobool(buffer, &val);
 781         if (rc)
 782                 return rc;
 783
 784         if (dev->od_index_in_idif) {
 785                 if (val)
 786                         return count;
 787
 788                 LCONSOLE_WARN("%s: OST-index in IDIF has been enabled, "
 789                               "it cannot be reverted back.\n", osd_name(dev));
 790                 return -EPERM;
 791         }
 792
 793         if (!val)
 794                 return count;
 795
 796         rc = lu_env_init(&env, LCT_DT_THREAD);
 797         if (rc)
 798                 return rc;
 799
 800         tgt = dev->od_dt_dev.dd_lu_dev.ld_site->ls_tgt;
 801         tgt->lut_lsd.lsd_feature_rocompat |= OBD_ROCOMPAT_IDX_IN_IDIF;
 802         rc = tgt_server_data_update(&env, tgt, 1);
 803         lu_env_fini(&env);
 804         if (rc < 0)
 805                 return rc;
 806
 807         LCONSOLE_INFO("%s: enable OST-index in IDIF successfully, "
 808                       "it cannot be reverted back.\n", osd_name(dev));
 809
 810         dev->od_index_in_idif = 1;
 811         return count;
 812 }
 813 LUSTRE_RW_ATTR(index_in_idif);
 814
 815 int osd_register_proc_index_in_idif(struct osd_device *osd)
 816 {
 817         struct dt_device *dt = &osd->od_dt_dev;
 818
 819         return sysfs_create_file(&dt->dd_kobj, &lustre_attr_index_in_idif.attr);
 820 }
 821 #endif
 822
 823 static ssize_t index_backup_show(struct kobject *kobj, struct attribute *attr,
 824                                  char *buf)
 825 {
 826         struct dt_device *dt = container_of(kobj, struct dt_device,
 827                                             dd_kobj);
 828         struct osd_device *dev = osd_dt_dev(dt);
 829
 830         LASSERT(dev);
 831         if (unlikely(!dev->od_mnt))
 832                 return -EINPROGRESS;
 833
 834         return sprintf(buf, "%d\n", dev->od_index_backup_policy);
 835 }
 836
 837 ssize_t index_backup_store(struct kobject *kobj, struct attribute *attr,
 838                            const char *buffer, size_t count)
 839 {
 840         struct dt_device *dt = container_of(kobj, struct dt_device,
 841                                            dd_kobj);
 842         struct osd_device *dev = osd_dt_dev(dt);
 843         int val;
 844         int rc;
 845
 846         LASSERT(dev);
 847         if (unlikely(!dev->od_mnt))
 848                 return -EINPROGRESS;
 849
 850         rc = kstrtoint(buffer, 0, &val);
 851         if (rc)
 852                 return rc;
 853
 854         dev->od_index_backup_policy = val;
 855         return count;
 856 }
 857 LUSTRE_RW_ATTR(index_backup);
 858
 859 struct ldebugfs_vars ldebugfs_osd_obd_vars[] = {
 860         { .name =       "oi_scrub",
 861           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 862         { .name =       "readcache_max_filesize",
 863           .fops =       &ldiskfs_osd_readcache_fops     },
 864         { .name =       "readcache_max_io_mb",
 865           .fops =       &ldiskfs_osd_readcache_max_io_fops      },
 866         { .name =       "writethrough_max_io_mb",
 867           .fops =       &ldiskfs_osd_writethrough_max_io_fops   },
 868         { NULL }
 869 };
 870
 871 static struct attribute *ldiskfs_attrs[] = {
 872         &lustre_attr_read_cache_enable.attr,
 873         &lustre_attr_writethrough_cache_enable.attr,
 874         &lustre_attr_fstype.attr,
 875         &lustre_attr_mntdev.attr,
 876         &lustre_attr_fallocate_zero_blocks.attr,
 877         &lustre_attr_force_sync.attr,
 878         &lustre_attr_nonrotational.attr,
 879         &lustre_attr_index_backup.attr,
 880         &lustre_attr_auto_scrub.attr,
 881         &lustre_attr_pdo.attr,
 882         &lustre_attr_full_scrub_ratio.attr,
 883         &lustre_attr_full_scrub_threshold_rate.attr,
 884         &lustre_attr_extent_bytes_allocation.attr,
 885         NULL,
 886 };
 887
 888 int osd_procfs_init(struct osd_device *osd, const char *name)
 889 {
 890         struct obd_type *type;
 891         int rc;
 892
 893         ENTRY;
 894
 895         /* at the moment there is no linkage between lu_type
 896          * and obd_type, so we lookup obd_type this way
 897          */
 898         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 899
 900         LASSERT(name);
 901         LASSERT(type);
 902
 903         CDEBUG(D_CONFIG, "%s: register osd-ldiskfs tunable parameters\n", name);
 904
 905         /* put reference taken by class_search_type */
 906         kobject_put(&type->typ_kobj);
 907
 908         osd->od_dt_dev.dd_ktype.default_attrs = ldiskfs_attrs;
 909         rc = dt_tunables_init(&osd->od_dt_dev, type, name,
 910                               ldebugfs_osd_obd_vars);
 911         if (rc) {
 912                 CERROR("%s: cannot setup sysfs / debugfs entry: %d\n",
 913                        name, rc);
 914                 GOTO(out, rc);
 915         }
 916
 917         if (osd->od_proc_entry)
 918                 RETURN(0);
 919
 920         /* Find the type procroot and add the proc entry for this device */
 921         osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
 922                                               NULL, &osd->od_dt_dev);
 923         if (IS_ERR(osd->od_proc_entry)) {
 924                 rc = PTR_ERR(osd->od_proc_entry);
 925                 CERROR("Error %d setting up lprocfs for %s\n",
 926                        rc, name);
 927                 osd->od_proc_entry = NULL;
 928                 GOTO(out, rc);
 929         }
 930
 931         rc = osd_stats_init(osd);
 932
 933         EXIT;
 934 out:
 935         if (rc)
 936                 osd_procfs_fini(osd);
 937         return rc;
 938 }
 939
 940 int osd_procfs_fini(struct osd_device *osd)
 941 {
 942         if (osd->od_stats)
 943                 lprocfs_free_stats(&osd->od_stats);
 944
 945         if (osd->od_proc_entry)
 946                 lprocfs_remove(&osd->od_proc_entry);
 947
 948         return dt_tunables_fini(&osd->od_dt_dev);
 949 }
 950 #endif