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 *bs = &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(&bs->bs_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(&bs->bs_hist[BRW_R_DISCONT_PAGES+rw], discont_pages);
  77         lprocfs_oh_tally(&bs->bs_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         /* this sampling races with updates */
 121         lprocfs_stats_header(seq, ktime_get(), brw_stats->bs_init, 25, ":", 1);
 122
 123         display_brw_stats(seq, "pages per bulk r/w", "rpcs",
 124                           &brw_stats->bs_hist[BRW_R_PAGES],
 125                           &brw_stats->bs_hist[BRW_W_PAGES], 1);
 126
 127         display_brw_stats(seq, "discontiguous pages", "rpcs",
 128                           &brw_stats->bs_hist[BRW_R_DISCONT_PAGES],
 129                           &brw_stats->bs_hist[BRW_W_DISCONT_PAGES], 0);
 130
 131         display_brw_stats(seq, "discontiguous blocks", "rpcs",
 132                           &brw_stats->bs_hist[BRW_R_DISCONT_BLOCKS],
 133                           &brw_stats->bs_hist[BRW_W_DISCONT_BLOCKS], 0);
 134
 135         display_brw_stats(seq, "disk fragmented I/Os", "ios",
 136                           &brw_stats->bs_hist[BRW_R_DIO_FRAGS],
 137                           &brw_stats->bs_hist[BRW_W_DIO_FRAGS], 0);
 138
 139         display_brw_stats(seq, "disk I/Os in flight", "ios",
 140                           &brw_stats->bs_hist[BRW_R_RPC_HIST],
 141                           &brw_stats->bs_hist[BRW_W_RPC_HIST], 0);
 142
 143         display_brw_stats(seq, "I/O time (1/1000s)", "ios",
 144                           &brw_stats->bs_hist[BRW_R_IO_TIME],
 145                           &brw_stats->bs_hist[BRW_W_IO_TIME], 1);
 146
 147         display_brw_stats(seq, "disk I/O size", "ios",
 148                           &brw_stats->bs_hist[BRW_R_DISK_IOSIZE],
 149                           &brw_stats->bs_hist[BRW_W_DISK_IOSIZE], 1);
 150 }
 151
 152 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
 153 {
 154         struct osd_device *osd = seq->private;
 155
 156         brw_stats_show(seq, &osd->od_brw_stats);
 157
 158         return 0;
 159 }
 160
 161 static ssize_t osd_brw_stats_seq_write(struct file *file,
 162                                        const char __user *buf,
 163                                        size_t len, loff_t *off)
 164 {
 165         struct seq_file *seq = file->private_data;
 166         struct osd_device *osd = seq->private;
 167         int i;
 168
 169         for (i = 0; i < BRW_LAST; i++)
 170                 lprocfs_oh_clear(&osd->od_brw_stats.bs_hist[i]);
 171         osd->od_brw_stats.bs_init = ktime_get();
 172
 173         return len;
 174 }
 175
 176 LPROC_SEQ_FOPS(osd_brw_stats);
 177
 178 static int osd_stats_init(struct osd_device *osd)
 179 {
 180         int i, result;
 181
 182         ENTRY;
 183         osd->od_brw_stats.bs_init = ktime_get();
 184
 185         for (i = 0; i < BRW_LAST; i++)
 186                 spin_lock_init(&osd->od_brw_stats.bs_hist[i].oh_lock);
 187
 188         osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
 189         if (osd->od_stats != NULL) {
 190                 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
 191                                                 osd->od_stats);
 192                 if (result)
 193                         GOTO(out, result);
 194
 195                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
 196                                      LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
 197                                      "get_page", "usec");
 198                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
 199                                      LPROCFS_CNTR_AVGMINMAX,
 200                                      "get_page_failures", "num");
 201                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
 202                                      LPROCFS_CNTR_AVGMINMAX,
 203                                      "cache_access", "pages");
 204                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
 205                                      LPROCFS_CNTR_AVGMINMAX,
 206                                      "cache_hit", "pages");
 207                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
 208                                      LPROCFS_CNTR_AVGMINMAX,
 209                                      "cache_miss", "pages");
 210 #if OSD_THANDLE_STATS
 211                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
 212                                      LPROCFS_CNTR_AVGMINMAX,
 213                                      "thandle starting", "usec");
 214                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
 215                                      LPROCFS_CNTR_AVGMINMAX,
 216                                      "thandle open", "usec");
 217                 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
 218                                      LPROCFS_CNTR_AVGMINMAX,
 219                                      "thandle closing", "usec");
 220 #endif
 221                 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
 222                                             0644, &osd_brw_stats_fops, osd);
 223         } else
 224                 result = -ENOMEM;
 225
 226 out:
 227         RETURN(result);
 228 }
 229
 230 static ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
 231                            char *buf)
 232 {
 233         return sprintf(buf, "ldiskfs\n");
 234 }
 235 LUSTRE_RO_ATTR(fstype);
 236
 237 static ssize_t mntdev_show(struct kobject *kobj, struct attribute *attr,
 238                            char *buf)
 239 {
 240         struct dt_device *dt = container_of(kobj, struct dt_device,
 241                                             dd_kobj);
 242         struct osd_device *osd = osd_dt_dev(dt);
 243
 244         LASSERT(osd);
 245         if (unlikely(!osd->od_mnt))
 246                 return -EINPROGRESS;
 247
 248         return sprintf(buf, "%s\n", osd->od_mntdev);
 249 }
 250 LUSTRE_RO_ATTR(mntdev);
 251
 252 static ssize_t read_cache_enable_show(struct kobject *kobj,
 253                                       struct attribute *attr,
 254                                       char *buf)
 255 {
 256         struct dt_device *dt = container_of(kobj, struct dt_device,
 257                                             dd_kobj);
 258         struct osd_device *osd = osd_dt_dev(dt);
 259
 260         LASSERT(osd);
 261         if (unlikely(!osd->od_mnt))
 262                 return -EINPROGRESS;
 263
 264         return sprintf(buf, "%u\n", osd->od_read_cache);
 265 }
 266
 267 static ssize_t read_cache_enable_store(struct kobject *kobj,
 268                                        struct attribute *attr,
 269                                        const char *buffer, size_t count)
 270 {
 271         struct dt_device *dt = container_of(kobj, struct dt_device,
 272                                             dd_kobj);
 273         struct osd_device *osd = osd_dt_dev(dt);
 274         bool val;
 275         int rc;
 276
 277         LASSERT(osd);
 278         if (unlikely(!osd->od_mnt))
 279                 return -EINPROGRESS;
 280
 281         rc = kstrtobool(buffer, &val);
 282         if (rc)
 283                 return rc;
 284
 285         osd->od_read_cache = !!val;
 286         return count;
 287 }
 288 LUSTRE_RW_ATTR(read_cache_enable);
 289
 290 static ssize_t writethrough_cache_enable_show(struct kobject *kobj,
 291                                               struct attribute *attr,
 292                                               char *buf)
 293 {
 294         struct dt_device *dt = container_of(kobj, struct dt_device,
 295                                             dd_kobj);
 296         struct osd_device *osd = osd_dt_dev(dt);
 297
 298         LASSERT(osd);
 299         if (unlikely(!osd->od_mnt))
 300                 return -EINPROGRESS;
 301
 302         return sprintf(buf, "%u\n", osd->od_writethrough_cache);
 303 }
 304
 305 static ssize_t writethrough_cache_enable_store(struct kobject *kobj,
 306                                                struct attribute *attr,
 307                                                const char *buffer,
 308                                                size_t count)
 309 {
 310         struct dt_device *dt = container_of(kobj, struct dt_device,
 311                                             dd_kobj);
 312         struct osd_device *osd = osd_dt_dev(dt);
 313         bool val;
 314         int rc;
 315
 316         LASSERT(osd);
 317         if (unlikely(!osd->od_mnt))
 318                 return -EINPROGRESS;
 319
 320         rc = kstrtobool(buffer, &val);
 321         if (rc)
 322                 return rc;
 323
 324         osd->od_writethrough_cache = !!val;
 325         return count;
 326 }
 327 LUSTRE_RW_ATTR(writethrough_cache_enable);
 328
 329 static ssize_t fallocate_zero_blocks_show(struct kobject *kobj,
 330                                           struct attribute *attr,
 331                                           char *buf)
 332 {
 333         struct dt_device *dt = container_of(kobj, struct dt_device,
 334                                             dd_kobj);
 335         struct osd_device *osd = osd_dt_dev(dt);
 336
 337         LASSERT(osd);
 338         if (unlikely(!osd->od_mnt))
 339                 return -EINPROGRESS;
 340
 341         return scnprintf(buf, PAGE_SIZE, "%d\n", osd->od_fallocate_zero_blocks);
 342 }
 343
 344 /*
 345  * Set how fallocate() interacts with the backing filesystem:
 346  * -1: fallocate is disabled and returns -EOPNOTSUPP
 347  *  0: fallocate allocates unwritten extents (like ext4)
 348  *  1: fallocate zeroes allocated extents on disk
 349  */
 350 static ssize_t fallocate_zero_blocks_store(struct kobject *kobj,
 351                                            struct attribute *attr,
 352                                            const char *buffer, size_t count)
 353 {
 354         struct dt_device *dt = container_of(kobj, struct dt_device,
 355                                             dd_kobj);
 356         struct osd_device *osd = osd_dt_dev(dt);
 357         long val;
 358         int rc;
 359
 360         LASSERT(osd);
 361         if (unlikely(!osd->od_mnt))
 362                 return -EINPROGRESS;
 363
 364         rc = kstrtol(buffer, 0, &val);
 365         if (rc)
 366                 return rc;
 367
 368         if (val < -1 || val > 1)
 369                 return -EINVAL;
 370
 371         osd->od_fallocate_zero_blocks = val;
 372         return count;
 373 }
 374 LUSTRE_RW_ATTR(fallocate_zero_blocks);
 375
 376 ssize_t force_sync_store(struct kobject *kobj, struct attribute *attr,
 377                          const char *buffer, size_t count)
 378 {
 379         struct dt_device *dt = container_of(kobj, struct dt_device,
 380                                             dd_kobj);
 381         struct osd_device *osd = osd_dt_dev(dt);
 382         struct lu_env env;
 383         int rc;
 384
 385         LASSERT(osd);
 386         if (unlikely(!osd->od_mnt))
 387                 return -EINPROGRESS;
 388
 389         rc = lu_env_init(&env, LCT_LOCAL);
 390         if (rc)
 391                 return rc;
 392
 393         rc = dt_sync(&env, dt);
 394         lu_env_fini(&env);
 395
 396         return rc == 0 ? count : rc;
 397 }
 398 LUSTRE_WO_ATTR(force_sync);
 399
 400 static ssize_t nonrotational_show(struct kobject *kobj, struct attribute *attr,
 401                                   char *buf)
 402 {
 403         struct dt_device *dt = container_of(kobj, struct dt_device,
 404                                             dd_kobj);
 405         struct osd_device *osd = osd_dt_dev(dt);
 406
 407         LASSERT(osd);
 408         if (unlikely(!osd->od_mnt))
 409                 return -EINPROGRESS;
 410
 411         return sprintf(buf, "%u\n", osd->od_nonrotational);
 412 }
 413
 414 static ssize_t nonrotational_store(struct kobject *kobj,
 415                                    struct attribute *attr, const char *buffer,
 416                                    size_t count)
 417 {
 418         struct dt_device *dt = container_of(kobj, struct dt_device,
 419                                             dd_kobj);
 420         struct osd_device *osd = osd_dt_dev(dt);
 421         bool val;
 422         int rc;
 423
 424         LASSERT(osd);
 425         if (unlikely(!osd->od_mnt))
 426                 return -EINPROGRESS;
 427
 428         rc = kstrtobool(buffer, &val);
 429         if (rc)
 430                 return rc;
 431
 432         osd->od_nonrotational = val;
 433         return count;
 434 }
 435 LUSTRE_RW_ATTR(nonrotational);
 436
 437 static ssize_t pdo_show(struct kobject *kobj, struct attribute *attr,
 438                         char *buf)
 439 {
 440         return sprintf(buf, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 441 }
 442
 443 static ssize_t pdo_store(struct kobject *kobj, struct attribute *attr,
 444                          const char *buffer, size_t count)
 445 {
 446         bool pdo;
 447         int rc;
 448
 449         rc = kstrtobool(buffer, &pdo);
 450         if (rc != 0)
 451                 return rc;
 452
 453         ldiskfs_pdo = pdo;
 454
 455         return count;
 456 }
 457 LUSTRE_RW_ATTR(pdo);
 458
 459 static ssize_t auto_scrub_show(struct kobject *kobj, struct attribute *attr,
 460                                char *buf)
 461 {
 462         struct dt_device *dt = container_of(kobj, struct dt_device,
 463                                             dd_kobj);
 464         struct osd_device *dev = osd_dt_dev(dt);
 465
 466         LASSERT(dev);
 467         if (unlikely(!dev->od_mnt))
 468                 return -EINPROGRESS;
 469
 470         return scnprintf(buf, PAGE_SIZE, "%lld\n",
 471                          dev->od_scrub.os_scrub.os_auto_scrub_interval);
 472 }
 473
 474 static ssize_t auto_scrub_store(struct kobject *kobj, struct attribute *attr,
 475                                 const char *buffer, size_t count)
 476 {
 477         struct dt_device *dt = container_of(kobj, struct dt_device,
 478                                             dd_kobj);
 479         struct osd_device *dev = osd_dt_dev(dt);
 480         s64 val;
 481         int rc;
 482
 483         LASSERT(dev);
 484         if (unlikely(!dev->od_mnt))
 485                 return -EINPROGRESS;
 486
 487         rc = kstrtoll(buffer, 0, &val);
 488         if (rc)
 489                 return rc;
 490
 491         dev->od_scrub.os_scrub.os_auto_scrub_interval = val;
 492         return count;
 493 }
 494 LUSTRE_RW_ATTR(auto_scrub);
 495
 496 static ssize_t full_scrub_ratio_show(struct kobject *kobj,
 497                                      struct attribute *attr,
 498                                      char *buf)
 499 {
 500         struct dt_device *dt = container_of(kobj, struct dt_device,
 501                                             dd_kobj);
 502         struct osd_device *dev = osd_dt_dev(dt);
 503
 504         LASSERT(dev);
 505         if (unlikely(!dev->od_mnt))
 506                 return -EINPROGRESS;
 507
 508         return sprintf(buf, "%llu\n", dev->od_full_scrub_ratio);
 509 }
 510
 511 static ssize_t full_scrub_ratio_store(struct kobject *kobj,
 512                                       struct attribute *attr,
 513                                       const char *buffer, size_t count)
 514 {
 515         struct dt_device *dt = container_of(kobj, struct dt_device,
 516                                             dd_kobj);
 517         struct osd_device *dev = osd_dt_dev(dt);
 518         s64 val;
 519         int rc;
 520
 521         LASSERT(dev);
 522         if (unlikely(!dev->od_mnt))
 523                 return -EINPROGRESS;
 524
 525         rc = kstrtoll(buffer, 0, &val);
 526         if (rc)
 527                 return rc;
 528
 529         if (val < 0)
 530                 return -EINVAL;
 531
 532         dev->od_full_scrub_ratio = val;
 533         return count;
 534 }
 535 LUSTRE_RW_ATTR(full_scrub_ratio);
 536
 537 static ssize_t full_scrub_threshold_rate_show(struct kobject *kobj,
 538                                               struct attribute *attr,
 539                                               char *buf)
 540 {
 541         struct dt_device *dt = container_of(kobj, struct dt_device,
 542                                             dd_kobj);
 543         struct osd_device *dev = osd_dt_dev(dt);
 544
 545         LASSERT(dev);
 546         if (unlikely(!dev->od_mnt))
 547                 return -EINPROGRESS;
 548
 549         return sprintf(buf, "%llu (bad OI mappings/minute)\n",
 550                        dev->od_full_scrub_threshold_rate);
 551 }
 552
 553 static ssize_t full_scrub_threshold_rate_store(struct kobject *kobj,
 554                                                struct attribute *attr,
 555                                                const char *buffer, size_t count)
 556 {
 557         struct dt_device *dt = container_of(kobj, struct dt_device,
 558                                             dd_kobj);
 559         struct osd_device *dev = osd_dt_dev(dt);
 560         u64 val;
 561         int rc;
 562
 563         LASSERT(dev);
 564         if (unlikely(!dev->od_mnt))
 565                 return -EINPROGRESS;
 566
 567         rc = kstrtoull(buffer, 0, &val);
 568         if (rc != 0)
 569                 return rc;
 570
 571         dev->od_full_scrub_threshold_rate = val;
 572         return count;
 573 }
 574 LUSTRE_RW_ATTR(full_scrub_threshold_rate);
 575
 576 static ssize_t extent_bytes_allocation_show(struct kobject *kobj,
 577                                             struct attribute *attr, char *buf)
 578 {
 579         struct dt_device *dt = container_of(kobj, struct dt_device,
 580                                             dd_kobj);
 581         struct osd_device *dev = osd_dt_dev(dt);
 582         int i;
 583         unsigned int min = (unsigned int)(~0), cur;
 584
 585         for_each_online_cpu(i) {
 586                 cur = *per_cpu_ptr(dev->od_extent_bytes_percpu, i);
 587                 if (cur < min)
 588                         min = cur;
 589         }
 590         return snprintf(buf, PAGE_SIZE, "%u\n", min);
 591 }
 592 LUSTRE_RO_ATTR(extent_bytes_allocation);
 593
 594 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 595 {
 596         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 597
 598         LASSERT(dev != NULL);
 599         if (unlikely(dev->od_mnt == NULL))
 600                 return -EINPROGRESS;
 601
 602         osd_scrub_dump(m, dev);
 603         return 0;
 604 }
 605
 606 LDEBUGFS_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 607
 608 static int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 609 {
 610         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 611
 612         LASSERT(osd != NULL);
 613         if (unlikely(osd->od_mnt == NULL))
 614                 return -EINPROGRESS;
 615
 616         seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
 617         return 0;
 618 }
 619
 620 static ssize_t
 621 ldiskfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
 622                                 size_t count, loff_t *off)
 623 {
 624         struct seq_file *m = file->private_data;
 625         struct dt_device *dt = m->private;
 626         struct osd_device *osd = osd_dt_dev(dt);
 627         char kernbuf[22] = "";
 628         u64 val;
 629         int rc;
 630
 631         LASSERT(osd != NULL);
 632         if (unlikely(osd->od_mnt == NULL))
 633                 return -EINPROGRESS;
 634
 635         if (count >= sizeof(kernbuf))
 636                 return -EINVAL;
 637
 638         if (copy_from_user(kernbuf, buffer, count))
 639                 return -EFAULT;
 640         kernbuf[count] = 0;
 641
 642         rc = sysfs_memparse(kernbuf, count, &val, "B");
 643         if (rc < 0)
 644                 return rc;
 645
 646         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 647                                          OSD_MAX_CACHE_SIZE : val;
 648         return count;
 649 }
 650
 651 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_readcache);
 652
 653 static int ldiskfs_osd_readcache_max_io_seq_show(struct seq_file *m, void *data)
 654 {
 655         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 656
 657         LASSERT(osd != NULL);
 658         if (unlikely(osd->od_mnt == NULL))
 659                 return -EINPROGRESS;
 660
 661         seq_printf(m, "%lu\n", osd->od_readcache_max_iosize >> 20);
 662         return 0;
 663 }
 664
 665 static ssize_t
 666 ldiskfs_osd_readcache_max_io_seq_write(struct file *file,
 667                                        const char __user *buffer,
 668                                        size_t count, loff_t *off)
 669 {
 670         struct seq_file *m = file->private_data;
 671         struct dt_device *dt = m->private;
 672         struct osd_device *osd = osd_dt_dev(dt);
 673         char kernbuf[22] = "";
 674         u64 val;
 675         int rc;
 676
 677         LASSERT(osd != NULL);
 678         if (unlikely(osd->od_mnt == NULL))
 679                 return -EINPROGRESS;
 680
 681         if (count >= sizeof(kernbuf))
 682                 return -EINVAL;
 683
 684         if (copy_from_user(kernbuf, buffer, count))
 685                 return -EFAULT;
 686         kernbuf[count] = 0;
 687
 688         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 689         if (rc < 0)
 690                 return rc;
 691
 692         if (val > PTLRPC_MAX_BRW_SIZE)
 693                 return -ERANGE;
 694         osd->od_readcache_max_iosize = val;
 695         return count;
 696 }
 697
 698 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_readcache_max_io);
 699
 700 static int ldiskfs_osd_writethrough_max_io_seq_show(struct seq_file *m,
 701                                                     void *data)
 702 {
 703         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 704
 705         LASSERT(osd != NULL);
 706         if (unlikely(osd->od_mnt == NULL))
 707                 return -EINPROGRESS;
 708
 709         seq_printf(m, "%lu\n", osd->od_writethrough_max_iosize >> 20);
 710         return 0;
 711 }
 712
 713 static ssize_t
 714 ldiskfs_osd_writethrough_max_io_seq_write(struct file *file,
 715                                        const char __user *buffer,
 716                                        size_t count, loff_t *off)
 717 {
 718         struct seq_file *m = file->private_data;
 719         struct dt_device *dt = m->private;
 720         struct osd_device *osd = osd_dt_dev(dt);
 721         char kernbuf[22] = "";
 722         u64 val;
 723         int rc;
 724
 725         LASSERT(osd != NULL);
 726         if (unlikely(osd->od_mnt == NULL))
 727                 return -EINPROGRESS;
 728
 729         if (count >= sizeof(kernbuf))
 730                 return -EINVAL;
 731
 732         if (copy_from_user(kernbuf, buffer, count))
 733                 return -EFAULT;
 734         kernbuf[count] = 0;
 735
 736         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 737         if (rc < 0)
 738                 return rc;
 739
 740         if (val > PTLRPC_MAX_BRW_SIZE)
 741                 return -ERANGE;
 742         osd->od_writethrough_max_iosize = val;
 743         return count;
 744 }
 745
 746 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_writethrough_max_io);
 747
 748 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 52, 0)
 749 static ssize_t index_in_idif_show(struct kobject *kobj, struct attribute *attr,
 750                                   char *buf)
 751 {
 752         struct dt_device *dt = container_of(kobj, struct dt_device,
 753                                             dd_kobj);
 754         struct osd_device *dev = osd_dt_dev(dt);
 755
 756         LASSERT(dev);
 757         if (unlikely(!dev->od_mnt))
 758                 return -EINPROGRESS;
 759
 760         return sprintf(buf, "%d\n", (int)(dev->od_index_in_idif));
 761 }
 762
 763 static ssize_t index_in_idif_store(struct kobject *kobj,
 764                                    struct attribute *attr,
 765                                    const char *buffer, size_t count)
 766 {
 767         struct dt_device *dt = container_of(kobj, struct dt_device,
 768                                             dd_kobj);
 769         struct osd_device *dev = osd_dt_dev(dt);
 770         struct lu_target *tgt;
 771         struct lu_env env;
 772         bool val;
 773         int rc;
 774
 775         LASSERT(dev);
 776         if (unlikely(!dev->od_mnt))
 777                 return -EINPROGRESS;
 778
 779         rc = kstrtobool(buffer, &val);
 780         if (rc)
 781                 return rc;
 782
 783         if (dev->od_index_in_idif) {
 784                 if (val)
 785                         return count;
 786
 787                 LCONSOLE_WARN("%s: OST-index in IDIF has been enabled, "
 788                               "it cannot be reverted back.\n", osd_name(dev));
 789                 return -EPERM;
 790         }
 791
 792         if (!val)
 793                 return count;
 794
 795         rc = lu_env_init(&env, LCT_DT_THREAD);
 796         if (rc)
 797                 return rc;
 798
 799         tgt = dev->od_dt_dev.dd_lu_dev.ld_site->ls_tgt;
 800         tgt->lut_lsd.lsd_feature_rocompat |= OBD_ROCOMPAT_IDX_IN_IDIF;
 801         rc = tgt_server_data_update(&env, tgt, 1);
 802         lu_env_fini(&env);
 803         if (rc < 0)
 804                 return rc;
 805
 806         LCONSOLE_INFO("%s: enable OST-index in IDIF successfully, "
 807                       "it cannot be reverted back.\n", osd_name(dev));
 808
 809         dev->od_index_in_idif = 1;
 810         return count;
 811 }
 812 LUSTRE_RW_ATTR(index_in_idif);
 813
 814 int osd_register_proc_index_in_idif(struct osd_device *osd)
 815 {
 816         struct dt_device *dt = &osd->od_dt_dev;
 817
 818         return sysfs_create_file(&dt->dd_kobj, &lustre_attr_index_in_idif.attr);
 819 }
 820 #endif
 821
 822 static ssize_t index_backup_show(struct kobject *kobj, struct attribute *attr,
 823                                  char *buf)
 824 {
 825         struct dt_device *dt = container_of(kobj, struct dt_device,
 826                                             dd_kobj);
 827         struct osd_device *dev = osd_dt_dev(dt);
 828
 829         LASSERT(dev);
 830         if (unlikely(!dev->od_mnt))
 831                 return -EINPROGRESS;
 832
 833         return sprintf(buf, "%d\n", dev->od_index_backup_policy);
 834 }
 835
 836 ssize_t index_backup_store(struct kobject *kobj, struct attribute *attr,
 837                            const char *buffer, size_t count)
 838 {
 839         struct dt_device *dt = container_of(kobj, struct dt_device,
 840                                            dd_kobj);
 841         struct osd_device *dev = osd_dt_dev(dt);
 842         int val;
 843         int rc;
 844
 845         LASSERT(dev);
 846         if (unlikely(!dev->od_mnt))
 847                 return -EINPROGRESS;
 848
 849         rc = kstrtoint(buffer, 0, &val);
 850         if (rc)
 851                 return rc;
 852
 853         dev->od_index_backup_policy = val;
 854         return count;
 855 }
 856 LUSTRE_RW_ATTR(index_backup);
 857
 858 struct ldebugfs_vars ldebugfs_osd_obd_vars[] = {
 859         { .name =       "oi_scrub",
 860           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 861         { .name =       "readcache_max_filesize",
 862           .fops =       &ldiskfs_osd_readcache_fops     },
 863         { .name =       "readcache_max_io_mb",
 864           .fops =       &ldiskfs_osd_readcache_max_io_fops      },
 865         { .name =       "writethrough_max_io_mb",
 866           .fops =       &ldiskfs_osd_writethrough_max_io_fops   },
 867         { NULL }
 868 };
 869
 870 static struct attribute *ldiskfs_attrs[] = {
 871         &lustre_attr_read_cache_enable.attr,
 872         &lustre_attr_writethrough_cache_enable.attr,
 873         &lustre_attr_fstype.attr,
 874         &lustre_attr_mntdev.attr,
 875         &lustre_attr_fallocate_zero_blocks.attr,
 876         &lustre_attr_force_sync.attr,
 877         &lustre_attr_nonrotational.attr,
 878         &lustre_attr_index_backup.attr,
 879         &lustre_attr_auto_scrub.attr,
 880         &lustre_attr_pdo.attr,
 881         &lustre_attr_full_scrub_ratio.attr,
 882         &lustre_attr_full_scrub_threshold_rate.attr,
 883         &lustre_attr_extent_bytes_allocation.attr,
 884         NULL,
 885 };
 886
 887 int osd_procfs_init(struct osd_device *osd, const char *name)
 888 {
 889         struct obd_type *type;
 890         int rc;
 891
 892         ENTRY;
 893
 894         /* at the moment there is no linkage between lu_type
 895          * and obd_type, so we lookup obd_type this way
 896          */
 897         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 898
 899         LASSERT(name);
 900         LASSERT(type);
 901
 902         CDEBUG(D_CONFIG, "%s: register osd-ldiskfs tunable parameters\n", name);
 903
 904         /* put reference taken by class_search_type */
 905         kobject_put(&type->typ_kobj);
 906
 907         osd->od_dt_dev.dd_ktype.default_attrs = ldiskfs_attrs;
 908         rc = dt_tunables_init(&osd->od_dt_dev, type, name,
 909                               ldebugfs_osd_obd_vars);
 910         if (rc) {
 911                 CERROR("%s: cannot setup sysfs / debugfs entry: %d\n",
 912                        name, rc);
 913                 GOTO(out, rc);
 914         }
 915
 916         if (osd->od_proc_entry)
 917                 RETURN(0);
 918
 919         /* Find the type procroot and add the proc entry for this device */
 920         osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
 921                                               NULL, &osd->od_dt_dev);
 922         if (IS_ERR(osd->od_proc_entry)) {
 923                 rc = PTR_ERR(osd->od_proc_entry);
 924                 CERROR("Error %d setting up lprocfs for %s\n",
 925                        rc, name);
 926                 osd->od_proc_entry = NULL;
 927                 GOTO(out, rc);
 928         }
 929
 930         rc = osd_stats_init(osd);
 931
 932         EXIT;
 933 out:
 934         if (rc)
 935                 osd_procfs_fini(osd);
 936         return rc;
 937 }
 938
 939 int osd_procfs_fini(struct osd_device *osd)
 940 {
 941         if (osd->od_stats)
 942                 lprocfs_free_stats(&osd->od_stats);
 943
 944         if (osd->od_proc_entry)
 945                 lprocfs_remove(&osd->od_proc_entry);
 946
 947         return dt_tunables_fini(&osd->od_dt_dev);
 948 }
 949 #endif