1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * bcache sysfs interfaces 4 * 5 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com> 6 * Copyright 2012 Google, Inc. 7 */ 8 9 #ifndef NO_BCACHEFS_SYSFS 10 11 #include "bcachefs.h" 12 #include "alloc_background.h" 13 #include "alloc_foreground.h" 14 #include "sysfs.h" 15 #include "btree_cache.h" 16 #include "btree_io.h" 17 #include "btree_iter.h" 18 #include "btree_key_cache.h" 19 #include "btree_update.h" 20 #include "btree_update_interior.h" 21 #include "btree_gc.h" 22 #include "buckets.h" 23 #include "clock.h" 24 #include "compress.h" 25 #include "disk_accounting.h" 26 #include "disk_groups.h" 27 #include "ec.h" 28 #include "inode.h" 29 #include "journal.h" 30 #include "journal_reclaim.h" 31 #include "keylist.h" 32 #include "move.h" 33 #include "movinggc.h" 34 #include "nocow_locking.h" 35 #include "opts.h" 36 #include "rebalance.h" 37 #include "replicas.h" 38 #include "super-io.h" 39 #include "tests.h" 40 41 #include <linux/blkdev.h> 42 #include <linux/sort.h> 43 #include <linux/sched/clock.h> 44 45 #include "util.h" 46 47 #define SYSFS_OPS(type) \ 48 const struct sysfs_ops type ## _sysfs_ops = { \ 49 .show = type ## _show, \ 50 .store = type ## _store \ 51 } 52 53 #define SHOW(fn) \ 54 static ssize_t fn ## _to_text(struct printbuf *, \ 55 struct kobject *, struct attribute *); \ 56 \ 57 static ssize_t fn ## _show(struct kobject *kobj, struct attribute *attr,\ 58 char *buf) \ 59 { \ 60 struct printbuf out = PRINTBUF; \ 61 ssize_t ret = fn ## _to_text(&out, kobj, attr); \ 62 \ 63 if (out.pos && out.buf[out.pos - 1] != '\n') \ 64 prt_newline(&out); \ 65 \ 66 if (!ret && out.allocation_failure) \ 67 ret = -ENOMEM; \ 68 \ 69 if (!ret) { \ 70 ret = min_t(size_t, out.pos, PAGE_SIZE - 1); \ 71 memcpy(buf, out.buf, ret); \ 72 } \ 73 printbuf_exit(&out); \ 74 return bch2_err_class(ret); \ 75 } \ 76 \ 77 static ssize_t fn ## _to_text(struct printbuf *out, struct kobject *kobj,\ 78 struct attribute *attr) 79 80 #define STORE(fn) \ 81 static ssize_t fn ## _store_inner(struct kobject *, struct attribute *,\ 82 const char *, size_t); \ 83 \ 84 static ssize_t fn ## _store(struct kobject *kobj, struct attribute *attr,\ 85 const char *buf, size_t size) \ 86 { \ 87 return bch2_err_class(fn##_store_inner(kobj, attr, buf, size)); \ 88 } \ 89 \ 90 static ssize_t fn ## _store_inner(struct kobject *kobj, struct attribute *attr,\ 91 const char *buf, size_t size) 92 93 #define __sysfs_attribute(_name, _mode) \ 94 static struct attribute sysfs_##_name = \ 95 { .name = #_name, .mode = _mode } 96 97 #define write_attribute(n) __sysfs_attribute(n, 0200) 98 #define read_attribute(n) __sysfs_attribute(n, 0444) 99 #define rw_attribute(n) __sysfs_attribute(n, 0644) 100 101 #define sysfs_printf(file, fmt, ...) \ 102 do { \ 103 if (attr == &sysfs_ ## file) \ 104 prt_printf(out, fmt "\n", __VA_ARGS__); \ 105 } while (0) 106 107 #define sysfs_print(file, var) \ 108 do { \ 109 if (attr == &sysfs_ ## file) \ 110 snprint(out, var); \ 111 } while (0) 112 113 #define sysfs_hprint(file, val) \ 114 do { \ 115 if (attr == &sysfs_ ## file) \ 116 prt_human_readable_s64(out, val); \ 117 } while (0) 118 119 #define sysfs_strtoul(file, var) \ 120 do { \ 121 if (attr == &sysfs_ ## file) \ 122 return strtoul_safe(buf, var) ?: (ssize_t) size; \ 123 } while (0) 124 125 #define sysfs_strtoul_clamp(file, var, min, max) \ 126 do { \ 127 if (attr == &sysfs_ ## file) \ 128 return strtoul_safe_clamp(buf, var, min, max) \ 129 ?: (ssize_t) size; \ 130 } while (0) 131 132 #define strtoul_or_return(cp) \ 133 ({ \ 134 unsigned long _v; \ 135 int _r = kstrtoul(cp, 10, &_v); \ 136 if (_r) \ 137 return _r; \ 138 _v; \ 139 }) 140 141 write_attribute(trigger_gc); 142 write_attribute(trigger_discards); 143 write_attribute(trigger_invalidates); 144 write_attribute(trigger_journal_flush); 145 write_attribute(trigger_journal_writes); 146 write_attribute(trigger_btree_cache_shrink); 147 write_attribute(trigger_btree_key_cache_shrink); 148 write_attribute(trigger_freelist_wakeup); 149 read_attribute(gc_gens_pos); 150 151 read_attribute(uuid); 152 read_attribute(minor); 153 read_attribute(flags); 154 read_attribute(bucket_size); 155 read_attribute(first_bucket); 156 read_attribute(nbuckets); 157 rw_attribute(durability); 158 read_attribute(io_done); 159 read_attribute(io_errors); 160 write_attribute(io_errors_reset); 161 162 read_attribute(io_latency_read); 163 read_attribute(io_latency_write); 164 read_attribute(io_latency_stats_read); 165 read_attribute(io_latency_stats_write); 166 read_attribute(congested); 167 168 read_attribute(btree_write_stats); 169 170 read_attribute(btree_cache_size); 171 read_attribute(compression_stats); 172 read_attribute(journal_debug); 173 read_attribute(btree_cache); 174 read_attribute(btree_key_cache); 175 read_attribute(btree_reserve_cache); 176 read_attribute(stripes_heap); 177 read_attribute(open_buckets); 178 read_attribute(open_buckets_partial); 179 read_attribute(write_points); 180 read_attribute(nocow_lock_table); 181 182 #ifdef BCH_WRITE_REF_DEBUG 183 read_attribute(write_refs); 184 185 static const char * const bch2_write_refs[] = { 186 #define x(n) #n, 187 BCH_WRITE_REFS() 188 #undef x 189 NULL 190 }; 191 192 static void bch2_write_refs_to_text(struct printbuf *out, struct bch_fs *c) 193 { 194 bch2_printbuf_tabstop_push(out, 24); 195 196 for (unsigned i = 0; i < ARRAY_SIZE(c->writes); i++) 197 prt_printf(out, "%s\t%li\n", bch2_write_refs[i], atomic_long_read(&c->writes[i])); 198 } 199 #endif 200 201 read_attribute(internal_uuid); 202 read_attribute(disk_groups); 203 204 read_attribute(has_data); 205 read_attribute(alloc_debug); 206 read_attribute(usage_base); 207 208 #define x(t, n, ...) read_attribute(t); 209 BCH_PERSISTENT_COUNTERS() 210 #undef x 211 212 rw_attribute(discard); 213 read_attribute(state); 214 rw_attribute(label); 215 216 read_attribute(copy_gc_wait); 217 218 sysfs_pd_controller_attribute(rebalance); 219 read_attribute(rebalance_status); 220 221 read_attribute(new_stripes); 222 223 read_attribute(io_timers_read); 224 read_attribute(io_timers_write); 225 226 read_attribute(moving_ctxts); 227 228 #ifdef CONFIG_BCACHEFS_TESTS 229 write_attribute(perf_test); 230 #endif /* CONFIG_BCACHEFS_TESTS */ 231 232 #define x(_name) \ 233 static struct attribute sysfs_time_stat_##_name = \ 234 { .name = #_name, .mode = 0644 }; 235 BCH_TIME_STATS() 236 #undef x 237 238 static size_t bch2_btree_cache_size(struct bch_fs *c) 239 { 240 struct btree_cache *bc = &c->btree_cache; 241 size_t ret = 0; 242 struct btree *b; 243 244 mutex_lock(&bc->lock); 245 list_for_each_entry(b, &bc->live[0].list, list) 246 ret += btree_buf_bytes(b); 247 list_for_each_entry(b, &bc->live[1].list, list) 248 ret += btree_buf_bytes(b); 249 list_for_each_entry(b, &bc->freeable, list) 250 ret += btree_buf_bytes(b); 251 mutex_unlock(&bc->lock); 252 return ret; 253 } 254 255 static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c) 256 { 257 prt_str(out, "type"); 258 printbuf_tabstop_push(out, 12); 259 printbuf_tabstop_push(out, 16); 260 printbuf_tabstop_push(out, 16); 261 printbuf_tabstop_push(out, 24); 262 prt_printf(out, "type\tcompressed\runcompressed\raverage extent size\r\n"); 263 264 for (unsigned i = 1; i < BCH_COMPRESSION_TYPE_NR; i++) { 265 struct disk_accounting_pos a = { 266 .type = BCH_DISK_ACCOUNTING_compression, 267 .compression.type = i, 268 }; 269 struct bpos p = disk_accounting_pos_to_bpos(&a); 270 u64 v[3]; 271 bch2_accounting_mem_read(c, p, v, ARRAY_SIZE(v)); 272 273 u64 nr_extents = v[0]; 274 u64 sectors_uncompressed = v[1]; 275 u64 sectors_compressed = v[2]; 276 277 bch2_prt_compression_type(out, i); 278 prt_tab(out); 279 280 prt_human_readable_u64(out, sectors_compressed << 9); 281 prt_tab_rjust(out); 282 283 prt_human_readable_u64(out, sectors_uncompressed << 9); 284 prt_tab_rjust(out); 285 286 prt_human_readable_u64(out, nr_extents 287 ? div64_u64(sectors_uncompressed << 9, nr_extents) 288 : 0); 289 prt_tab_rjust(out); 290 prt_newline(out); 291 } 292 293 return 0; 294 } 295 296 static void bch2_gc_gens_pos_to_text(struct printbuf *out, struct bch_fs *c) 297 { 298 bch2_btree_id_to_text(out, c->gc_gens_btree); 299 prt_printf(out, ": "); 300 bch2_bpos_to_text(out, c->gc_gens_pos); 301 prt_printf(out, "\n"); 302 } 303 304 static void bch2_fs_usage_base_to_text(struct printbuf *out, struct bch_fs *c) 305 { 306 struct bch_fs_usage_base b = {}; 307 308 acc_u64s_percpu(&b.hidden, &c->usage->hidden, sizeof(b) / sizeof(u64)); 309 310 prt_printf(out, "hidden:\t\t%llu\n", b.hidden); 311 prt_printf(out, "btree:\t\t%llu\n", b.btree); 312 prt_printf(out, "data:\t\t%llu\n", b.data); 313 prt_printf(out, "cached:\t%llu\n", b.cached); 314 prt_printf(out, "reserved:\t\t%llu\n", b.reserved); 315 prt_printf(out, "nr_inodes:\t%llu\n", b.nr_inodes); 316 } 317 318 SHOW(bch2_fs) 319 { 320 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj); 321 322 sysfs_print(minor, c->minor); 323 sysfs_printf(internal_uuid, "%pU", c->sb.uuid.b); 324 325 if (attr == &sysfs_flags) 326 prt_bitflags(out, bch2_fs_flag_strs, c->flags); 327 328 sysfs_hprint(btree_cache_size, bch2_btree_cache_size(c)); 329 330 if (attr == &sysfs_btree_write_stats) 331 bch2_btree_write_stats_to_text(out, c); 332 333 if (attr == &sysfs_gc_gens_pos) 334 bch2_gc_gens_pos_to_text(out, c); 335 336 sysfs_pd_controller_show(rebalance, &c->rebalance.pd); /* XXX */ 337 338 if (attr == &sysfs_copy_gc_wait) 339 bch2_copygc_wait_to_text(out, c); 340 341 if (attr == &sysfs_rebalance_status) 342 bch2_rebalance_status_to_text(out, c); 343 344 /* Debugging: */ 345 346 if (attr == &sysfs_journal_debug) 347 bch2_journal_debug_to_text(out, &c->journal); 348 349 if (attr == &sysfs_btree_cache) 350 bch2_btree_cache_to_text(out, &c->btree_cache); 351 352 if (attr == &sysfs_btree_key_cache) 353 bch2_btree_key_cache_to_text(out, &c->btree_key_cache); 354 355 if (attr == &sysfs_btree_reserve_cache) 356 bch2_btree_reserve_cache_to_text(out, c); 357 358 if (attr == &sysfs_stripes_heap) 359 bch2_stripes_heap_to_text(out, c); 360 361 if (attr == &sysfs_open_buckets) 362 bch2_open_buckets_to_text(out, c, NULL); 363 364 if (attr == &sysfs_open_buckets_partial) 365 bch2_open_buckets_partial_to_text(out, c); 366 367 if (attr == &sysfs_write_points) 368 bch2_write_points_to_text(out, c); 369 370 if (attr == &sysfs_compression_stats) 371 bch2_compression_stats_to_text(out, c); 372 373 if (attr == &sysfs_new_stripes) 374 bch2_new_stripes_to_text(out, c); 375 376 if (attr == &sysfs_io_timers_read) 377 bch2_io_timers_to_text(out, &c->io_clock[READ]); 378 379 if (attr == &sysfs_io_timers_write) 380 bch2_io_timers_to_text(out, &c->io_clock[WRITE]); 381 382 if (attr == &sysfs_moving_ctxts) 383 bch2_fs_moving_ctxts_to_text(out, c); 384 385 #ifdef BCH_WRITE_REF_DEBUG 386 if (attr == &sysfs_write_refs) 387 bch2_write_refs_to_text(out, c); 388 #endif 389 390 if (attr == &sysfs_nocow_lock_table) 391 bch2_nocow_locks_to_text(out, &c->nocow_locks); 392 393 if (attr == &sysfs_disk_groups) 394 bch2_disk_groups_to_text(out, c); 395 396 if (attr == &sysfs_alloc_debug) 397 bch2_fs_alloc_debug_to_text(out, c); 398 399 if (attr == &sysfs_usage_base) 400 bch2_fs_usage_base_to_text(out, c); 401 402 return 0; 403 } 404 405 STORE(bch2_fs) 406 { 407 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj); 408 409 sysfs_pd_controller_store(rebalance, &c->rebalance.pd); 410 411 /* Debugging: */ 412 413 if (!test_bit(BCH_FS_started, &c->flags)) 414 return -EPERM; 415 416 /* Debugging: */ 417 418 if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs)) 419 return -EROFS; 420 421 if (attr == &sysfs_trigger_btree_cache_shrink) { 422 struct btree_cache *bc = &c->btree_cache; 423 struct shrink_control sc; 424 425 sc.gfp_mask = GFP_KERNEL; 426 sc.nr_to_scan = strtoul_or_return(buf); 427 bc->live[0].shrink->scan_objects(bc->live[0].shrink, &sc); 428 } 429 430 if (attr == &sysfs_trigger_btree_key_cache_shrink) { 431 struct shrink_control sc; 432 433 sc.gfp_mask = GFP_KERNEL; 434 sc.nr_to_scan = strtoul_or_return(buf); 435 c->btree_key_cache.shrink->scan_objects(c->btree_key_cache.shrink, &sc); 436 } 437 438 if (attr == &sysfs_trigger_gc) 439 bch2_gc_gens(c); 440 441 if (attr == &sysfs_trigger_discards) 442 bch2_do_discards(c); 443 444 if (attr == &sysfs_trigger_invalidates) 445 bch2_do_invalidates(c); 446 447 if (attr == &sysfs_trigger_journal_flush) { 448 bch2_journal_flush_all_pins(&c->journal); 449 bch2_journal_meta(&c->journal); 450 } 451 452 if (attr == &sysfs_trigger_journal_writes) 453 bch2_journal_do_writes(&c->journal); 454 455 if (attr == &sysfs_trigger_freelist_wakeup) 456 closure_wake_up(&c->freelist_wait); 457 458 #ifdef CONFIG_BCACHEFS_TESTS 459 if (attr == &sysfs_perf_test) { 460 char *tmp = kstrdup(buf, GFP_KERNEL), *p = tmp; 461 char *test = strsep(&p, " \t\n"); 462 char *nr_str = strsep(&p, " \t\n"); 463 char *threads_str = strsep(&p, " \t\n"); 464 unsigned threads; 465 u64 nr; 466 int ret = -EINVAL; 467 468 if (threads_str && 469 !(ret = kstrtouint(threads_str, 10, &threads)) && 470 !(ret = bch2_strtoull_h(nr_str, &nr))) 471 ret = bch2_btree_perf_test(c, test, nr, threads); 472 kfree(tmp); 473 474 if (ret) 475 size = ret; 476 } 477 #endif 478 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs); 479 return size; 480 } 481 SYSFS_OPS(bch2_fs); 482 483 struct attribute *bch2_fs_files[] = { 484 &sysfs_minor, 485 &sysfs_btree_cache_size, 486 &sysfs_btree_write_stats, 487 488 &sysfs_rebalance_status, 489 490 &sysfs_compression_stats, 491 492 #ifdef CONFIG_BCACHEFS_TESTS 493 &sysfs_perf_test, 494 #endif 495 NULL 496 }; 497 498 /* counters dir */ 499 500 SHOW(bch2_fs_counters) 501 { 502 struct bch_fs *c = container_of(kobj, struct bch_fs, counters_kobj); 503 u64 counter = 0; 504 u64 counter_since_mount = 0; 505 506 printbuf_tabstop_push(out, 32); 507 508 #define x(t, n, f, ...) \ 509 if (attr == &sysfs_##t) { \ 510 counter = percpu_u64_get(&c->counters[BCH_COUNTER_##t]);\ 511 counter_since_mount = counter - c->counters_on_mount[BCH_COUNTER_##t];\ 512 if (f & TYPE_SECTORS) { \ 513 counter <<= 9; \ 514 counter_since_mount <<= 9; \ 515 } \ 516 \ 517 prt_printf(out, "since mount:\t"); \ 518 (f & TYPE_COUNTER) ? prt_u64(out, counter_since_mount) :\ 519 prt_human_readable_u64(out, counter_since_mount); \ 520 prt_newline(out); \ 521 \ 522 prt_printf(out, "since filesystem creation:\t"); \ 523 (f & TYPE_COUNTER) ? prt_u64(out, counter) : \ 524 prt_human_readable_u64(out, counter); \ 525 prt_newline(out); \ 526 } 527 BCH_PERSISTENT_COUNTERS() 528 #undef x 529 return 0; 530 } 531 532 STORE(bch2_fs_counters) { 533 return 0; 534 } 535 536 SYSFS_OPS(bch2_fs_counters); 537 538 struct attribute *bch2_fs_counters_files[] = { 539 #define x(t, ...) \ 540 &sysfs_##t, 541 BCH_PERSISTENT_COUNTERS() 542 #undef x 543 NULL 544 }; 545 /* internal dir - just a wrapper */ 546 547 SHOW(bch2_fs_internal) 548 { 549 struct bch_fs *c = container_of(kobj, struct bch_fs, internal); 550 551 return bch2_fs_to_text(out, &c->kobj, attr); 552 } 553 554 STORE(bch2_fs_internal) 555 { 556 struct bch_fs *c = container_of(kobj, struct bch_fs, internal); 557 558 return bch2_fs_store(&c->kobj, attr, buf, size); 559 } 560 SYSFS_OPS(bch2_fs_internal); 561 562 struct attribute *bch2_fs_internal_files[] = { 563 &sysfs_flags, 564 &sysfs_journal_debug, 565 &sysfs_btree_cache, 566 &sysfs_btree_key_cache, 567 &sysfs_btree_reserve_cache, 568 &sysfs_new_stripes, 569 &sysfs_stripes_heap, 570 &sysfs_open_buckets, 571 &sysfs_open_buckets_partial, 572 &sysfs_write_points, 573 #ifdef BCH_WRITE_REF_DEBUG 574 &sysfs_write_refs, 575 #endif 576 &sysfs_nocow_lock_table, 577 &sysfs_io_timers_read, 578 &sysfs_io_timers_write, 579 580 &sysfs_trigger_gc, 581 &sysfs_trigger_discards, 582 &sysfs_trigger_invalidates, 583 &sysfs_trigger_journal_flush, 584 &sysfs_trigger_journal_writes, 585 &sysfs_trigger_btree_cache_shrink, 586 &sysfs_trigger_btree_key_cache_shrink, 587 &sysfs_trigger_freelist_wakeup, 588 589 &sysfs_gc_gens_pos, 590 591 &sysfs_copy_gc_wait, 592 593 sysfs_pd_controller_files(rebalance), 594 595 &sysfs_moving_ctxts, 596 597 &sysfs_internal_uuid, 598 599 &sysfs_disk_groups, 600 &sysfs_alloc_debug, 601 &sysfs_usage_base, 602 NULL 603 }; 604 605 /* options */ 606 607 SHOW(bch2_fs_opts_dir) 608 { 609 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir); 610 const struct bch_option *opt = container_of(attr, struct bch_option, attr); 611 int id = opt - bch2_opt_table; 612 u64 v = bch2_opt_get_by_id(&c->opts, id); 613 614 bch2_opt_to_text(out, c, c->disk_sb.sb, opt, v, OPT_SHOW_FULL_LIST); 615 prt_char(out, '\n'); 616 617 return 0; 618 } 619 620 STORE(bch2_fs_opts_dir) 621 { 622 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir); 623 const struct bch_option *opt = container_of(attr, struct bch_option, attr); 624 int ret, id = opt - bch2_opt_table; 625 char *tmp; 626 u64 v; 627 628 /* 629 * We don't need to take c->writes for correctness, but it eliminates an 630 * unsightly error message in the dmesg log when we're RO: 631 */ 632 if (unlikely(!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs))) 633 return -EROFS; 634 635 tmp = kstrdup(buf, GFP_KERNEL); 636 if (!tmp) { 637 ret = -ENOMEM; 638 goto err; 639 } 640 641 ret = bch2_opt_parse(c, opt, strim(tmp), &v, NULL); 642 kfree(tmp); 643 644 if (ret < 0) 645 goto err; 646 647 ret = bch2_opt_check_may_set(c, id, v); 648 if (ret < 0) 649 goto err; 650 651 bch2_opt_set_sb(c, NULL, opt, v); 652 bch2_opt_set_by_id(&c->opts, id, v); 653 654 if (v && 655 (id == Opt_background_target || 656 id == Opt_background_compression || 657 (id == Opt_compression && !c->opts.background_compression))) 658 bch2_set_rebalance_needs_scan(c, 0); 659 660 if (v && id == Opt_rebalance_enabled) 661 rebalance_wakeup(c); 662 663 if (v && id == Opt_copygc_enabled && 664 c->copygc_thread) 665 wake_up_process(c->copygc_thread); 666 667 ret = size; 668 err: 669 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs); 670 return ret; 671 } 672 SYSFS_OPS(bch2_fs_opts_dir); 673 674 struct attribute *bch2_fs_opts_dir_files[] = { NULL }; 675 676 int bch2_opts_create_sysfs_files(struct kobject *kobj) 677 { 678 const struct bch_option *i; 679 int ret; 680 681 for (i = bch2_opt_table; 682 i < bch2_opt_table + bch2_opts_nr; 683 i++) { 684 if (!(i->flags & OPT_FS)) 685 continue; 686 687 ret = sysfs_create_file(kobj, &i->attr); 688 if (ret) 689 return ret; 690 } 691 692 return 0; 693 } 694 695 /* time stats */ 696 697 SHOW(bch2_fs_time_stats) 698 { 699 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats); 700 701 #define x(name) \ 702 if (attr == &sysfs_time_stat_##name) \ 703 bch2_time_stats_to_text(out, &c->times[BCH_TIME_##name]); 704 BCH_TIME_STATS() 705 #undef x 706 707 return 0; 708 } 709 710 STORE(bch2_fs_time_stats) 711 { 712 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats); 713 714 #define x(name) \ 715 if (attr == &sysfs_time_stat_##name) \ 716 bch2_time_stats_reset(&c->times[BCH_TIME_##name]); 717 BCH_TIME_STATS() 718 #undef x 719 return size; 720 } 721 SYSFS_OPS(bch2_fs_time_stats); 722 723 struct attribute *bch2_fs_time_stats_files[] = { 724 #define x(name) \ 725 &sysfs_time_stat_##name, 726 BCH_TIME_STATS() 727 #undef x 728 NULL 729 }; 730 731 static const char * const bch2_rw[] = { 732 "read", 733 "write", 734 NULL 735 }; 736 737 static void dev_io_done_to_text(struct printbuf *out, struct bch_dev *ca) 738 { 739 int rw, i; 740 741 for (rw = 0; rw < 2; rw++) { 742 prt_printf(out, "%s:\n", bch2_rw[rw]); 743 744 for (i = 1; i < BCH_DATA_NR; i++) 745 prt_printf(out, "%-12s:%12llu\n", 746 bch2_data_type_str(i), 747 percpu_u64_get(&ca->io_done->sectors[rw][i]) << 9); 748 } 749 } 750 751 SHOW(bch2_dev) 752 { 753 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj); 754 struct bch_fs *c = ca->fs; 755 756 sysfs_printf(uuid, "%pU\n", ca->uuid.b); 757 758 sysfs_print(bucket_size, bucket_bytes(ca)); 759 sysfs_print(first_bucket, ca->mi.first_bucket); 760 sysfs_print(nbuckets, ca->mi.nbuckets); 761 sysfs_print(durability, ca->mi.durability); 762 sysfs_print(discard, ca->mi.discard); 763 764 if (attr == &sysfs_label) { 765 if (ca->mi.group) 766 bch2_disk_path_to_text(out, c, ca->mi.group - 1); 767 prt_char(out, '\n'); 768 } 769 770 if (attr == &sysfs_has_data) { 771 prt_bitflags(out, __bch2_data_types, bch2_dev_has_data(c, ca)); 772 prt_char(out, '\n'); 773 } 774 775 if (attr == &sysfs_state) { 776 prt_string_option(out, bch2_member_states, ca->mi.state); 777 prt_char(out, '\n'); 778 } 779 780 if (attr == &sysfs_io_done) 781 dev_io_done_to_text(out, ca); 782 783 if (attr == &sysfs_io_errors) 784 bch2_dev_io_errors_to_text(out, ca); 785 786 sysfs_print(io_latency_read, atomic64_read(&ca->cur_latency[READ])); 787 sysfs_print(io_latency_write, atomic64_read(&ca->cur_latency[WRITE])); 788 789 if (attr == &sysfs_io_latency_stats_read) 790 bch2_time_stats_to_text(out, &ca->io_latency[READ].stats); 791 792 if (attr == &sysfs_io_latency_stats_write) 793 bch2_time_stats_to_text(out, &ca->io_latency[WRITE].stats); 794 795 sysfs_printf(congested, "%u%%", 796 clamp(atomic_read(&ca->congested), 0, CONGESTED_MAX) 797 * 100 / CONGESTED_MAX); 798 799 if (attr == &sysfs_alloc_debug) 800 bch2_dev_alloc_debug_to_text(out, ca); 801 802 if (attr == &sysfs_open_buckets) 803 bch2_open_buckets_to_text(out, c, ca); 804 805 return 0; 806 } 807 808 STORE(bch2_dev) 809 { 810 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj); 811 struct bch_fs *c = ca->fs; 812 813 if (attr == &sysfs_discard) { 814 bool v = strtoul_or_return(buf); 815 816 bch2_opt_set_sb(c, ca, bch2_opt_table + Opt_discard, v); 817 } 818 819 if (attr == &sysfs_durability) { 820 u64 v = strtoul_or_return(buf); 821 822 bch2_opt_set_sb(c, ca, bch2_opt_table + Opt_durability, v); 823 } 824 825 if (attr == &sysfs_label) { 826 char *tmp; 827 int ret; 828 829 tmp = kstrdup(buf, GFP_KERNEL); 830 if (!tmp) 831 return -ENOMEM; 832 833 ret = bch2_dev_group_set(c, ca, strim(tmp)); 834 kfree(tmp); 835 if (ret) 836 return ret; 837 } 838 839 if (attr == &sysfs_io_errors_reset) 840 bch2_dev_errors_reset(ca); 841 842 return size; 843 } 844 SYSFS_OPS(bch2_dev); 845 846 struct attribute *bch2_dev_files[] = { 847 &sysfs_uuid, 848 &sysfs_bucket_size, 849 &sysfs_first_bucket, 850 &sysfs_nbuckets, 851 &sysfs_durability, 852 853 /* settings: */ 854 &sysfs_discard, 855 &sysfs_state, 856 &sysfs_label, 857 858 &sysfs_has_data, 859 &sysfs_io_done, 860 &sysfs_io_errors, 861 &sysfs_io_errors_reset, 862 863 &sysfs_io_latency_read, 864 &sysfs_io_latency_write, 865 &sysfs_io_latency_stats_read, 866 &sysfs_io_latency_stats_write, 867 &sysfs_congested, 868 869 /* debug: */ 870 &sysfs_alloc_debug, 871 &sysfs_open_buckets, 872 NULL 873 }; 874 875 #endif /* _BCACHEFS_SYSFS_H_ */ 876