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 ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
 234                            char *buf)
 235 {
 236         return sprintf(buf, "ldiskfs\n");
 237 }
 238 LUSTRE_RO_ATTR(fstype);
 239
 240 static ssize_t mntdev_show(struct kobject *kobj, struct attribute *attr,
 241                            char *buf)
 242 {
 243         struct dt_device *dt = container_of(kobj, struct dt_device,
 244                                             dd_kobj);
 245         struct osd_device *osd = osd_dt_dev(dt);
 246
 247         LASSERT(osd);
 248         if (unlikely(!osd->od_mnt))
 249                 return -EINPROGRESS;
 250
 251         return sprintf(buf, "%s\n", osd->od_mntdev);
 252 }
 253 LUSTRE_RO_ATTR(mntdev);
 254
 255 static ssize_t read_cache_enable_show(struct kobject *kobj,
 256                                       struct attribute *attr,
 257                                       char *buf)
 258 {
 259         struct dt_device *dt = container_of(kobj, struct dt_device,
 260                                             dd_kobj);
 261         struct osd_device *osd = osd_dt_dev(dt);
 262
 263         LASSERT(osd);
 264         if (unlikely(!osd->od_mnt))
 265                 return -EINPROGRESS;
 266
 267         return sprintf(buf, "%u\n", osd->od_read_cache);
 268 }
 269
 270 static ssize_t read_cache_enable_store(struct kobject *kobj,
 271                                        struct attribute *attr,
 272                                        const char *buffer, size_t count)
 273 {
 274         struct dt_device *dt = container_of(kobj, struct dt_device,
 275                                             dd_kobj);
 276         struct osd_device *osd = osd_dt_dev(dt);
 277         bool val;
 278         int rc;
 279
 280         LASSERT(osd);
 281         if (unlikely(!osd->od_mnt))
 282                 return -EINPROGRESS;
 283
 284         rc = kstrtobool(buffer, &val);
 285         if (rc)
 286                 return rc;
 287
 288         osd->od_read_cache = val;
 289         return count;
 290 }
 291 LUSTRE_RW_ATTR(read_cache_enable);
 292
 293 static ssize_t writethrough_cache_enable_show(struct kobject *kobj,
 294                                               struct attribute *attr,
 295                                               char *buf)
 296 {
 297         struct dt_device *dt = container_of(kobj, struct dt_device,
 298                                             dd_kobj);
 299         struct osd_device *osd = osd_dt_dev(dt);
 300
 301         LASSERT(osd);
 302         if (unlikely(!osd->od_mnt))
 303                 return -EINPROGRESS;
 304
 305         return sprintf(buf, "%u\n", osd->od_writethrough_cache);
 306 }
 307
 308 static ssize_t writethrough_cache_enable_store(struct kobject *kobj,
 309                                                struct attribute *attr,
 310                                                const char *buffer,
 311                                                size_t count)
 312 {
 313         struct dt_device *dt = container_of(kobj, struct dt_device,
 314                                             dd_kobj);
 315         struct osd_device *osd = osd_dt_dev(dt);
 316         bool val;
 317         int rc;
 318
 319         LASSERT(osd);
 320         if (unlikely(!osd->od_mnt))
 321                 return -EINPROGRESS;
 322
 323         rc = kstrtobool(buffer, &val);
 324         if (rc)
 325                 return rc;
 326
 327         osd->od_writethrough_cache = val;
 328         return count;
 329 }
 330 LUSTRE_RW_ATTR(writethrough_cache_enable);
 331
 332 ssize_t force_sync_store(struct kobject *kobj, struct attribute *attr,
 333                          const char *buffer, size_t count)
 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         struct lu_env env;
 339         int rc;
 340
 341         LASSERT(osd);
 342         if (unlikely(!osd->od_mnt))
 343                 return -EINPROGRESS;
 344
 345         rc = lu_env_init(&env, LCT_LOCAL);
 346         if (rc)
 347                 return rc;
 348
 349         rc = dt_sync(&env, dt);
 350         lu_env_fini(&env);
 351
 352         return rc == 0 ? count : rc;
 353 }
 354 LUSTRE_WO_ATTR(force_sync);
 355
 356 static ssize_t nonrotational_show(struct kobject *kobj, struct attribute *attr,
 357                                   char *buf)
 358 {
 359         struct dt_device *dt = container_of(kobj, struct dt_device,
 360                                             dd_kobj);
 361         struct osd_device *osd = osd_dt_dev(dt);
 362
 363         LASSERT(osd);
 364         if (unlikely(!osd->od_mnt))
 365                 return -EINPROGRESS;
 366
 367         return sprintf(buf, "%u\n", osd->od_nonrotational);
 368 }
 369
 370 static ssize_t nonrotational_store(struct kobject *kobj,
 371                                    struct attribute *attr, const char *buffer,
 372                                    size_t count)
 373 {
 374         struct dt_device *dt = container_of(kobj, struct dt_device,
 375                                             dd_kobj);
 376         struct osd_device *osd = osd_dt_dev(dt);
 377         bool val;
 378         int rc;
 379
 380         LASSERT(osd);
 381         if (unlikely(!osd->od_mnt))
 382                 return -EINPROGRESS;
 383
 384         rc = kstrtobool(buffer, &val);
 385         if (rc)
 386                 return rc;
 387
 388         osd->od_nonrotational = val;
 389         return count;
 390 }
 391 LUSTRE_RW_ATTR(nonrotational);
 392
 393 static ssize_t pdo_show(struct kobject *kobj, struct attribute *attr,
 394                         char *buf)
 395 {
 396         return sprintf(buf, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
 397 }
 398
 399 static ssize_t pdo_store(struct kobject *kobj, struct attribute *attr,
 400                          const char *buffer, size_t count)
 401 {
 402         bool pdo;
 403         int rc;
 404
 405         rc = kstrtobool(buffer, &pdo);
 406         if (rc != 0)
 407                 return rc;
 408
 409         ldiskfs_pdo = pdo;
 410
 411         return count;
 412 }
 413 LUSTRE_RW_ATTR(pdo);
 414
 415 static ssize_t auto_scrub_show(struct kobject *kobj, struct attribute *attr,
 416                                char *buf)
 417 {
 418         struct dt_device *dt = container_of(kobj, struct dt_device,
 419                                             dd_kobj);
 420         struct osd_device *dev = osd_dt_dev(dt);
 421
 422         LASSERT(dev);
 423         if (unlikely(!dev->od_mnt))
 424                 return -EINPROGRESS;
 425
 426         return sprintf(buf, "%lld\n", dev->od_auto_scrub_interval);
 427 }
 428
 429 static ssize_t auto_scrub_store(struct kobject *kobj, struct attribute *attr,
 430                                 const char *buffer, size_t count)
 431 {
 432         struct dt_device *dt = container_of(kobj, struct dt_device,
 433                                             dd_kobj);
 434         struct osd_device *dev = osd_dt_dev(dt);
 435         s64 val;
 436         int rc;
 437
 438         LASSERT(dev);
 439         if (unlikely(!dev->od_mnt))
 440                 return -EINPROGRESS;
 441
 442         rc = kstrtoll(buffer, 0, &val);
 443         if (rc)
 444                 return rc;
 445
 446         dev->od_auto_scrub_interval = val;
 447         return count;
 448 }
 449 LUSTRE_RW_ATTR(auto_scrub);
 450
 451 static ssize_t full_scrub_ratio_show(struct kobject *kobj,
 452                                      struct attribute *attr,
 453                                      char *buf)
 454 {
 455         struct dt_device *dt = container_of(kobj, struct dt_device,
 456                                             dd_kobj);
 457         struct osd_device *dev = osd_dt_dev(dt);
 458
 459         LASSERT(dev);
 460         if (unlikely(!dev->od_mnt))
 461                 return -EINPROGRESS;
 462
 463         return sprintf(buf, "%llu\n", dev->od_full_scrub_ratio);
 464 }
 465
 466 static ssize_t full_scrub_ratio_store(struct kobject *kobj,
 467                                       struct attribute *attr,
 468                                       const char *buffer, size_t count)
 469 {
 470         struct dt_device *dt = container_of(kobj, struct dt_device,
 471                                             dd_kobj);
 472         struct osd_device *dev = osd_dt_dev(dt);
 473         s64 val;
 474         int rc;
 475
 476         LASSERT(dev);
 477         if (unlikely(!dev->od_mnt))
 478                 return -EINPROGRESS;
 479
 480         rc = kstrtoll(buffer, 0, &val);
 481         if (rc)
 482                 return rc;
 483
 484         if (val < 0)
 485                 return -EINVAL;
 486
 487         dev->od_full_scrub_ratio = val;
 488         return count;
 489 }
 490 LUSTRE_RW_ATTR(full_scrub_ratio);
 491
 492 static ssize_t full_scrub_threshold_rate_show(struct kobject *kobj,
 493                                               struct attribute *attr,
 494                                               char *buf)
 495 {
 496         struct dt_device *dt = container_of(kobj, struct dt_device,
 497                                             dd_kobj);
 498         struct osd_device *dev = osd_dt_dev(dt);
 499
 500         LASSERT(dev);
 501         if (unlikely(!dev->od_mnt))
 502                 return -EINPROGRESS;
 503
 504         return sprintf(buf, "%llu (bad OI mappings/minute)\n",
 505                        dev->od_full_scrub_threshold_rate);
 506 }
 507
 508 static ssize_t full_scrub_threshold_rate_store(struct kobject *kobj,
 509                                                struct attribute *attr,
 510                                                const char *buffer, size_t count)
 511 {
 512         struct dt_device *dt = container_of(kobj, struct dt_device,
 513                                             dd_kobj);
 514         struct osd_device *dev = osd_dt_dev(dt);
 515         u64 val;
 516         int rc;
 517
 518         LASSERT(dev);
 519         if (unlikely(!dev->od_mnt))
 520                 return -EINPROGRESS;
 521
 522         rc = kstrtoull(buffer, 0, &val);
 523         if (rc != 0)
 524                 return rc;
 525
 526         dev->od_full_scrub_threshold_rate = val;
 527         return count;
 528 }
 529 LUSTRE_RW_ATTR(full_scrub_threshold_rate);
 530
 531 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 532 {
 533         struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
 534
 535         LASSERT(dev != NULL);
 536         if (unlikely(dev->od_mnt == NULL))
 537                 return -EINPROGRESS;
 538
 539         osd_scrub_dump(m, dev);
 540         return 0;
 541 }
 542
 543 LDEBUGFS_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
 544
 545 static int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
 546 {
 547         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 548
 549         LASSERT(osd != NULL);
 550         if (unlikely(osd->od_mnt == NULL))
 551                 return -EINPROGRESS;
 552
 553         seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
 554         return 0;
 555 }
 556
 557 static ssize_t
 558 ldiskfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
 559                                 size_t count, loff_t *off)
 560 {
 561         struct seq_file *m = file->private_data;
 562         struct dt_device *dt = m->private;
 563         struct osd_device *osd = osd_dt_dev(dt);
 564         char kernbuf[22] = "";
 565         u64 val;
 566         int rc;
 567
 568         LASSERT(osd != NULL);
 569         if (unlikely(osd->od_mnt == NULL))
 570                 return -EINPROGRESS;
 571
 572         if (count >= sizeof(kernbuf))
 573                 return -EINVAL;
 574
 575         if (copy_from_user(kernbuf, buffer, count))
 576                 return -EFAULT;
 577         kernbuf[count] = 0;
 578
 579         rc = sysfs_memparse(kernbuf, count, &val, "B");
 580         if (rc < 0)
 581                 return rc;
 582
 583         osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
 584                                          OSD_MAX_CACHE_SIZE : val;
 585         return count;
 586 }
 587
 588 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_readcache);
 589
 590 static int ldiskfs_osd_readcache_max_io_seq_show(struct seq_file *m, void *data)
 591 {
 592         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 593
 594         LASSERT(osd != NULL);
 595         if (unlikely(osd->od_mnt == NULL))
 596                 return -EINPROGRESS;
 597
 598         seq_printf(m, "%lu\n", osd->od_readcache_max_iosize >> 20);
 599         return 0;
 600 }
 601
 602 static ssize_t
 603 ldiskfs_osd_readcache_max_io_seq_write(struct file *file,
 604                                        const char __user *buffer,
 605                                        size_t count, loff_t *off)
 606 {
 607         struct seq_file *m = file->private_data;
 608         struct dt_device *dt = m->private;
 609         struct osd_device *osd = osd_dt_dev(dt);
 610         char kernbuf[22] = "";
 611         u64 val;
 612         int rc;
 613
 614         LASSERT(osd != NULL);
 615         if (unlikely(osd->od_mnt == NULL))
 616                 return -EINPROGRESS;
 617
 618         if (count >= sizeof(kernbuf))
 619                 return -EINVAL;
 620
 621         if (copy_from_user(kernbuf, buffer, count))
 622                 return -EFAULT;
 623         kernbuf[count] = 0;
 624
 625         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 626         if (rc < 0)
 627                 return rc;
 628
 629         if (val > PTLRPC_MAX_BRW_SIZE)
 630                 return -ERANGE;
 631         osd->od_readcache_max_iosize = val;
 632         return count;
 633 }
 634
 635 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_readcache_max_io);
 636
 637 static int ldiskfs_osd_writethrough_max_io_seq_show(struct seq_file *m,
 638                                                     void *data)
 639 {
 640         struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
 641
 642         LASSERT(osd != NULL);
 643         if (unlikely(osd->od_mnt == NULL))
 644                 return -EINPROGRESS;
 645
 646         seq_printf(m, "%lu\n", osd->od_writethrough_max_iosize >> 20);
 647         return 0;
 648 }
 649
 650 static ssize_t
 651 ldiskfs_osd_writethrough_max_io_seq_write(struct file *file,
 652                                        const char __user *buffer,
 653                                        size_t count, loff_t *off)
 654 {
 655         struct seq_file *m = file->private_data;
 656         struct dt_device *dt = m->private;
 657         struct osd_device *osd = osd_dt_dev(dt);
 658         char kernbuf[22] = "";
 659         u64 val;
 660         int rc;
 661
 662         LASSERT(osd != NULL);
 663         if (unlikely(osd->od_mnt == NULL))
 664                 return -EINPROGRESS;
 665
 666         if (count >= sizeof(kernbuf))
 667                 return -EINVAL;
 668
 669         if (copy_from_user(kernbuf, buffer, count))
 670                 return -EFAULT;
 671         kernbuf[count] = 0;
 672
 673         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 674         if (rc < 0)
 675                 return rc;
 676
 677         if (val > PTLRPC_MAX_BRW_SIZE)
 678                 return -ERANGE;
 679         osd->od_writethrough_max_iosize = val;
 680         return count;
 681 }
 682
 683 LDEBUGFS_SEQ_FOPS(ldiskfs_osd_writethrough_max_io);
 684
 685 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 52, 0)
 686 static ssize_t index_in_idif_show(struct kobject *kobj, struct attribute *attr,
 687                                   char *buf)
 688 {
 689         struct dt_device *dt = container_of(kobj, struct dt_device,
 690                                             dd_kobj);
 691         struct osd_device *dev = osd_dt_dev(dt);
 692
 693         LASSERT(dev);
 694         if (unlikely(!dev->od_mnt))
 695                 return -EINPROGRESS;
 696
 697         return sprintf(buf, "%d\n", (int)(dev->od_index_in_idif));
 698 }
 699
 700 static ssize_t index_in_idif_store(struct kobject *kobj,
 701                                    struct attribute *attr,
 702                                    const char *buffer, size_t count)
 703 {
 704         struct dt_device *dt = container_of(kobj, struct dt_device,
 705                                             dd_kobj);
 706         struct osd_device *dev = osd_dt_dev(dt);
 707         struct lu_target *tgt;
 708         struct lu_env env;
 709         bool val;
 710         int rc;
 711
 712         LASSERT(dev);
 713         if (unlikely(!dev->od_mnt))
 714                 return -EINPROGRESS;
 715
 716         rc = kstrtobool(buffer, &val);
 717         if (rc)
 718                 return rc;
 719
 720         if (dev->od_index_in_idif) {
 721                 if (val)
 722                         return count;
 723
 724                 LCONSOLE_WARN("%s: OST-index in IDIF has been enabled, "
 725                               "it cannot be reverted back.\n", osd_name(dev));
 726                 return -EPERM;
 727         }
 728
 729         if (!val)
 730                 return count;
 731
 732         rc = lu_env_init(&env, LCT_DT_THREAD);
 733         if (rc)
 734                 return rc;
 735
 736         tgt = dev->od_dt_dev.dd_lu_dev.ld_site->ls_tgt;
 737         tgt->lut_lsd.lsd_feature_rocompat |= OBD_ROCOMPAT_IDX_IN_IDIF;
 738         rc = tgt_server_data_update(&env, tgt, 1);
 739         lu_env_fini(&env);
 740         if (rc < 0)
 741                 return rc;
 742
 743         LCONSOLE_INFO("%s: enable OST-index in IDIF successfully, "
 744                       "it cannot be reverted back.\n", osd_name(dev));
 745
 746         dev->od_index_in_idif = 1;
 747         return count;
 748 }
 749 LUSTRE_RW_ATTR(index_in_idif);
 750
 751 int osd_register_proc_index_in_idif(struct osd_device *osd)
 752 {
 753         struct dt_device *dt = &osd->od_dt_dev;
 754
 755         return sysfs_create_file(&dt->dd_kobj, &lustre_attr_index_in_idif.attr);
 756 }
 757 #endif
 758
 759 static ssize_t index_backup_show(struct kobject *kobj, struct attribute *attr,
 760                                  char *buf)
 761 {
 762         struct dt_device *dt = container_of(kobj, struct dt_device,
 763                                             dd_kobj);
 764         struct osd_device *dev = osd_dt_dev(dt);
 765
 766         LASSERT(dev);
 767         if (unlikely(!dev->od_mnt))
 768                 return -EINPROGRESS;
 769
 770         return sprintf(buf, "%d\n", dev->od_index_backup_policy);
 771 }
 772
 773 ssize_t index_backup_store(struct kobject *kobj, struct attribute *attr,
 774                            const char *buffer, size_t count)
 775 {
 776         struct dt_device *dt = container_of(kobj, struct dt_device,
 777                                            dd_kobj);
 778         struct osd_device *dev = osd_dt_dev(dt);
 779         int val;
 780         int rc;
 781
 782         LASSERT(dev);
 783         if (unlikely(!dev->od_mnt))
 784                 return -EINPROGRESS;
 785
 786         rc = kstrtoint(buffer, 0, &val);
 787         if (rc)
 788                 return rc;
 789
 790         dev->od_index_backup_policy = val;
 791         return count;
 792 }
 793 LUSTRE_RW_ATTR(index_backup);
 794
 795 struct ldebugfs_vars ldebugfs_osd_obd_vars[] = {
 796         { .name =       "oi_scrub",
 797           .fops =       &ldiskfs_osd_oi_scrub_fops      },
 798         { .name =       "readcache_max_filesize",
 799           .fops =       &ldiskfs_osd_readcache_fops     },
 800         { .name =       "readcache_max_io_mb",
 801           .fops =       &ldiskfs_osd_readcache_max_io_fops      },
 802         { .name =       "writethrough_max_io_mb",
 803           .fops =       &ldiskfs_osd_writethrough_max_io_fops   },
 804         { NULL }
 805 };
 806
 807 static struct attribute *ldiskfs_attrs[] = {
 808         &lustre_attr_read_cache_enable.attr,
 809         &lustre_attr_writethrough_cache_enable.attr,
 810         &lustre_attr_fstype.attr,
 811         &lustre_attr_mntdev.attr,
 812         &lustre_attr_force_sync.attr,
 813         &lustre_attr_nonrotational.attr,
 814         &lustre_attr_index_backup.attr,
 815         &lustre_attr_auto_scrub.attr,
 816         &lustre_attr_pdo.attr,
 817         &lustre_attr_full_scrub_ratio.attr,
 818         &lustre_attr_full_scrub_threshold_rate.attr,
 819         NULL,
 820 };
 821
 822 int osd_procfs_init(struct osd_device *osd, const char *name)
 823 {
 824         struct obd_type *type;
 825         int rc;
 826
 827         ENTRY;
 828
 829         /* at the moment there is no linkage between lu_type
 830          * and obd_type, so we lookup obd_type this way
 831          */
 832         type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
 833
 834         LASSERT(name);
 835         LASSERT(type);
 836
 837         CDEBUG(D_CONFIG, "%s: register osd-ldiskfs tunable parameters\n", name);
 838
 839         /* put reference taken by class_search_type */
 840         kobject_put(&type->typ_kobj);
 841
 842         osd->od_dt_dev.dd_ktype.default_attrs = ldiskfs_attrs;
 843         rc = dt_tunables_init(&osd->od_dt_dev, type, name,
 844                               ldebugfs_osd_obd_vars);
 845         if (rc) {
 846                 CERROR("%s: cannot setup sysfs / debugfs entry: %d\n",
 847                        name, rc);
 848                 GOTO(out, rc);
 849         }
 850
 851         if (osd->od_proc_entry)
 852                 RETURN(0);
 853
 854         /* Find the type procroot and add the proc entry for this device */
 855         osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
 856                                               NULL, &osd->od_dt_dev);
 857         if (IS_ERR(osd->od_proc_entry)) {
 858                 rc = PTR_ERR(osd->od_proc_entry);
 859                 CERROR("Error %d setting up lprocfs for %s\n",
 860                        rc, name);
 861                 osd->od_proc_entry = NULL;
 862                 GOTO(out, rc);
 863         }
 864
 865         rc = osd_stats_init(osd);
 866
 867         EXIT;
 868 out:
 869         if (rc)
 870                 osd_procfs_fini(osd);
 871         return rc;
 872 }
 873
 874 int osd_procfs_fini(struct osd_device *osd)
 875 {
 876         if (osd->od_stats)
 877                 lprocfs_free_stats(&osd->od_stats);
 878
 879         if (osd->od_proc_entry)
 880                 lprocfs_remove(&osd->od_proc_entry);
 881
 882         return dt_tunables_fini(&osd->od_dt_dev);
 883 }
 884 #endif