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 rw_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(accounting); 207 read_attribute(usage_base); 208 209 #define x(t, n, ...) read_attribute(t); 210 BCH_PERSISTENT_COUNTERS() 211 #undef x 212 213 rw_attribute(discard); 214 rw_attribute(label); 215 216 rw_attribute(copy_gc_enabled); 217 read_attribute(copy_gc_wait); 218 219 rw_attribute(rebalance_enabled); 220 sysfs_pd_controller_attribute(rebalance); 221 read_attribute(rebalance_status); 222 223 read_attribute(new_stripes); 224 225 read_attribute(io_timers_read); 226 read_attribute(io_timers_write); 227 228 read_attribute(moving_ctxts); 229 230 #ifdef CONFIG_BCACHEFS_TESTS 231 write_attribute(perf_test); 232 #endif /* CONFIG_BCACHEFS_TESTS */ 233 234 #define x(_name) \ 235 static struct attribute sysfs_time_stat_##_name = \ 236 { .name = #_name, .mode = 0644 }; 237 BCH_TIME_STATS() 238 #undef x 239 240 static struct attribute sysfs_state_rw = { 241 .name = "state", 242 .mode = 0444, 243 }; 244 245 static size_t bch2_btree_cache_size(struct bch_fs *c) 246 { 247 struct btree_cache *bc = &c->btree_cache; 248 size_t ret = 0; 249 struct btree *b; 250 251 mutex_lock(&bc->lock); 252 list_for_each_entry(b, &bc->live[0].list, list) 253 ret += btree_buf_bytes(b); 254 list_for_each_entry(b, &bc->live[1].list, list) 255 ret += btree_buf_bytes(b); 256 list_for_each_entry(b, &bc->freeable, list) 257 ret += btree_buf_bytes(b); 258 mutex_unlock(&bc->lock); 259 return ret; 260 } 261 262 static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c) 263 { 264 prt_str(out, "type"); 265 printbuf_tabstop_push(out, 12); 266 printbuf_tabstop_push(out, 16); 267 printbuf_tabstop_push(out, 16); 268 printbuf_tabstop_push(out, 24); 269 prt_printf(out, "type\tcompressed\runcompressed\raverage extent size\r\n"); 270 271 for (unsigned i = 1; i < BCH_COMPRESSION_TYPE_NR; i++) { 272 struct disk_accounting_pos a = { 273 .type = BCH_DISK_ACCOUNTING_compression, 274 .compression.type = i, 275 }; 276 struct bpos p = disk_accounting_pos_to_bpos(&a); 277 u64 v[3]; 278 bch2_accounting_mem_read(c, p, v, ARRAY_SIZE(v)); 279 280 u64 nr_extents = v[0]; 281 u64 sectors_uncompressed = v[1]; 282 u64 sectors_compressed = v[2]; 283 284 bch2_prt_compression_type(out, i); 285 prt_tab(out); 286 287 prt_human_readable_u64(out, sectors_compressed << 9); 288 prt_tab_rjust(out); 289 290 prt_human_readable_u64(out, sectors_uncompressed << 9); 291 prt_tab_rjust(out); 292 293 prt_human_readable_u64(out, nr_extents 294 ? div64_u64(sectors_uncompressed << 9, nr_extents) 295 : 0); 296 prt_tab_rjust(out); 297 prt_newline(out); 298 } 299 300 return 0; 301 } 302 303 static void bch2_gc_gens_pos_to_text(struct printbuf *out, struct bch_fs *c) 304 { 305 prt_printf(out, "%s: ", bch2_btree_id_str(c->gc_gens_btree)); 306 bch2_bpos_to_text(out, c->gc_gens_pos); 307 prt_printf(out, "\n"); 308 } 309 310 static void bch2_fs_usage_base_to_text(struct printbuf *out, struct bch_fs *c) 311 { 312 struct bch_fs_usage_base b = {}; 313 314 acc_u64s_percpu(&b.hidden, &c->usage->hidden, sizeof(b) / sizeof(u64)); 315 316 prt_printf(out, "hidden:\t\t%llu\n", b.hidden); 317 prt_printf(out, "btree:\t\t%llu\n", b.btree); 318 prt_printf(out, "data:\t\t%llu\n", b.data); 319 prt_printf(out, "cached:\t%llu\n", b.cached); 320 prt_printf(out, "reserved:\t\t%llu\n", b.reserved); 321 prt_printf(out, "nr_inodes:\t%llu\n", b.nr_inodes); 322 } 323 324 SHOW(bch2_fs) 325 { 326 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj); 327 328 sysfs_print(minor, c->minor); 329 sysfs_printf(internal_uuid, "%pU", c->sb.uuid.b); 330 331 if (attr == &sysfs_flags) 332 prt_bitflags(out, bch2_fs_flag_strs, c->flags); 333 334 sysfs_hprint(btree_cache_size, bch2_btree_cache_size(c)); 335 336 if (attr == &sysfs_btree_write_stats) 337 bch2_btree_write_stats_to_text(out, c); 338 339 if (attr == &sysfs_gc_gens_pos) 340 bch2_gc_gens_pos_to_text(out, c); 341 342 sysfs_printf(copy_gc_enabled, "%i", c->copy_gc_enabled); 343 344 sysfs_printf(rebalance_enabled, "%i", c->rebalance.enabled); 345 sysfs_pd_controller_show(rebalance, &c->rebalance.pd); /* XXX */ 346 347 if (attr == &sysfs_copy_gc_wait) 348 bch2_copygc_wait_to_text(out, c); 349 350 if (attr == &sysfs_rebalance_status) 351 bch2_rebalance_status_to_text(out, c); 352 353 /* Debugging: */ 354 355 if (attr == &sysfs_journal_debug) 356 bch2_journal_debug_to_text(out, &c->journal); 357 358 if (attr == &sysfs_btree_cache) 359 bch2_btree_cache_to_text(out, &c->btree_cache); 360 361 if (attr == &sysfs_btree_key_cache) 362 bch2_btree_key_cache_to_text(out, &c->btree_key_cache); 363 364 if (attr == &sysfs_btree_reserve_cache) 365 bch2_btree_reserve_cache_to_text(out, c); 366 367 if (attr == &sysfs_stripes_heap) 368 bch2_stripes_heap_to_text(out, c); 369 370 if (attr == &sysfs_open_buckets) 371 bch2_open_buckets_to_text(out, c, NULL); 372 373 if (attr == &sysfs_open_buckets_partial) 374 bch2_open_buckets_partial_to_text(out, c); 375 376 if (attr == &sysfs_write_points) 377 bch2_write_points_to_text(out, c); 378 379 if (attr == &sysfs_compression_stats) 380 bch2_compression_stats_to_text(out, c); 381 382 if (attr == &sysfs_new_stripes) 383 bch2_new_stripes_to_text(out, c); 384 385 if (attr == &sysfs_io_timers_read) 386 bch2_io_timers_to_text(out, &c->io_clock[READ]); 387 388 if (attr == &sysfs_io_timers_write) 389 bch2_io_timers_to_text(out, &c->io_clock[WRITE]); 390 391 if (attr == &sysfs_moving_ctxts) 392 bch2_fs_moving_ctxts_to_text(out, c); 393 394 #ifdef BCH_WRITE_REF_DEBUG 395 if (attr == &sysfs_write_refs) 396 bch2_write_refs_to_text(out, c); 397 #endif 398 399 if (attr == &sysfs_nocow_lock_table) 400 bch2_nocow_locks_to_text(out, &c->nocow_locks); 401 402 if (attr == &sysfs_disk_groups) 403 bch2_disk_groups_to_text(out, c); 404 405 if (attr == &sysfs_alloc_debug) 406 bch2_fs_alloc_debug_to_text(out, c); 407 408 if (attr == &sysfs_accounting) 409 bch2_fs_accounting_to_text(out, c); 410 411 if (attr == &sysfs_usage_base) 412 bch2_fs_usage_base_to_text(out, c); 413 414 return 0; 415 } 416 417 STORE(bch2_fs) 418 { 419 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj); 420 421 if (attr == &sysfs_copy_gc_enabled) { 422 ssize_t ret = strtoul_safe(buf, c->copy_gc_enabled) 423 ?: (ssize_t) size; 424 425 if (c->copygc_thread) 426 wake_up_process(c->copygc_thread); 427 return ret; 428 } 429 430 if (attr == &sysfs_rebalance_enabled) { 431 ssize_t ret = strtoul_safe(buf, c->rebalance.enabled) 432 ?: (ssize_t) size; 433 434 rebalance_wakeup(c); 435 return ret; 436 } 437 438 sysfs_pd_controller_store(rebalance, &c->rebalance.pd); 439 440 /* Debugging: */ 441 442 if (!test_bit(BCH_FS_started, &c->flags)) 443 return -EPERM; 444 445 /* Debugging: */ 446 447 if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs)) 448 return -EROFS; 449 450 if (attr == &sysfs_trigger_btree_cache_shrink) { 451 struct btree_cache *bc = &c->btree_cache; 452 struct shrink_control sc; 453 454 sc.gfp_mask = GFP_KERNEL; 455 sc.nr_to_scan = strtoul_or_return(buf); 456 bc->live[0].shrink->scan_objects(bc->live[0].shrink, &sc); 457 } 458 459 if (attr == &sysfs_trigger_btree_key_cache_shrink) { 460 struct shrink_control sc; 461 462 sc.gfp_mask = GFP_KERNEL; 463 sc.nr_to_scan = strtoul_or_return(buf); 464 c->btree_key_cache.shrink->scan_objects(c->btree_key_cache.shrink, &sc); 465 } 466 467 if (attr == &sysfs_trigger_gc) 468 bch2_gc_gens(c); 469 470 if (attr == &sysfs_trigger_discards) 471 bch2_do_discards(c); 472 473 if (attr == &sysfs_trigger_invalidates) 474 bch2_do_invalidates(c); 475 476 if (attr == &sysfs_trigger_journal_flush) { 477 bch2_journal_flush_all_pins(&c->journal); 478 bch2_journal_meta(&c->journal); 479 } 480 481 if (attr == &sysfs_trigger_journal_writes) 482 bch2_journal_do_writes(&c->journal); 483 484 if (attr == &sysfs_trigger_freelist_wakeup) 485 closure_wake_up(&c->freelist_wait); 486 487 #ifdef CONFIG_BCACHEFS_TESTS 488 if (attr == &sysfs_perf_test) { 489 char *tmp = kstrdup(buf, GFP_KERNEL), *p = tmp; 490 char *test = strsep(&p, " \t\n"); 491 char *nr_str = strsep(&p, " \t\n"); 492 char *threads_str = strsep(&p, " \t\n"); 493 unsigned threads; 494 u64 nr; 495 int ret = -EINVAL; 496 497 if (threads_str && 498 !(ret = kstrtouint(threads_str, 10, &threads)) && 499 !(ret = bch2_strtoull_h(nr_str, &nr))) 500 ret = bch2_btree_perf_test(c, test, nr, threads); 501 kfree(tmp); 502 503 if (ret) 504 size = ret; 505 } 506 #endif 507 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs); 508 return size; 509 } 510 SYSFS_OPS(bch2_fs); 511 512 struct attribute *bch2_fs_files[] = { 513 &sysfs_minor, 514 &sysfs_btree_cache_size, 515 &sysfs_btree_write_stats, 516 517 &sysfs_rebalance_status, 518 519 &sysfs_compression_stats, 520 521 #ifdef CONFIG_BCACHEFS_TESTS 522 &sysfs_perf_test, 523 #endif 524 NULL 525 }; 526 527 /* counters dir */ 528 529 SHOW(bch2_fs_counters) 530 { 531 struct bch_fs *c = container_of(kobj, struct bch_fs, counters_kobj); 532 u64 counter = 0; 533 u64 counter_since_mount = 0; 534 535 printbuf_tabstop_push(out, 32); 536 537 #define x(t, ...) \ 538 if (attr == &sysfs_##t) { \ 539 counter = percpu_u64_get(&c->counters[BCH_COUNTER_##t]);\ 540 counter_since_mount = counter - c->counters_on_mount[BCH_COUNTER_##t];\ 541 prt_printf(out, "since mount:\t"); \ 542 prt_human_readable_u64(out, counter_since_mount); \ 543 prt_newline(out); \ 544 \ 545 prt_printf(out, "since filesystem creation:\t"); \ 546 prt_human_readable_u64(out, counter); \ 547 prt_newline(out); \ 548 } 549 BCH_PERSISTENT_COUNTERS() 550 #undef x 551 return 0; 552 } 553 554 STORE(bch2_fs_counters) { 555 return 0; 556 } 557 558 SYSFS_OPS(bch2_fs_counters); 559 560 struct attribute *bch2_fs_counters_files[] = { 561 #define x(t, ...) \ 562 &sysfs_##t, 563 BCH_PERSISTENT_COUNTERS() 564 #undef x 565 NULL 566 }; 567 /* internal dir - just a wrapper */ 568 569 SHOW(bch2_fs_internal) 570 { 571 struct bch_fs *c = container_of(kobj, struct bch_fs, internal); 572 573 return bch2_fs_to_text(out, &c->kobj, attr); 574 } 575 576 STORE(bch2_fs_internal) 577 { 578 struct bch_fs *c = container_of(kobj, struct bch_fs, internal); 579 580 return bch2_fs_store(&c->kobj, attr, buf, size); 581 } 582 SYSFS_OPS(bch2_fs_internal); 583 584 struct attribute *bch2_fs_internal_files[] = { 585 &sysfs_flags, 586 &sysfs_journal_debug, 587 &sysfs_btree_cache, 588 &sysfs_btree_key_cache, 589 &sysfs_btree_reserve_cache, 590 &sysfs_new_stripes, 591 &sysfs_stripes_heap, 592 &sysfs_open_buckets, 593 &sysfs_open_buckets_partial, 594 &sysfs_write_points, 595 #ifdef BCH_WRITE_REF_DEBUG 596 &sysfs_write_refs, 597 #endif 598 &sysfs_nocow_lock_table, 599 &sysfs_io_timers_read, 600 &sysfs_io_timers_write, 601 602 &sysfs_trigger_gc, 603 &sysfs_trigger_discards, 604 &sysfs_trigger_invalidates, 605 &sysfs_trigger_journal_flush, 606 &sysfs_trigger_journal_writes, 607 &sysfs_trigger_btree_cache_shrink, 608 &sysfs_trigger_btree_key_cache_shrink, 609 &sysfs_trigger_freelist_wakeup, 610 611 &sysfs_gc_gens_pos, 612 613 &sysfs_copy_gc_enabled, 614 &sysfs_copy_gc_wait, 615 616 &sysfs_rebalance_enabled, 617 sysfs_pd_controller_files(rebalance), 618 619 &sysfs_moving_ctxts, 620 621 &sysfs_internal_uuid, 622 623 &sysfs_disk_groups, 624 &sysfs_alloc_debug, 625 &sysfs_accounting, 626 &sysfs_usage_base, 627 NULL 628 }; 629 630 /* options */ 631 632 SHOW(bch2_fs_opts_dir) 633 { 634 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir); 635 const struct bch_option *opt = container_of(attr, struct bch_option, attr); 636 int id = opt - bch2_opt_table; 637 u64 v = bch2_opt_get_by_id(&c->opts, id); 638 639 bch2_opt_to_text(out, c, c->disk_sb.sb, opt, v, OPT_SHOW_FULL_LIST); 640 prt_char(out, '\n'); 641 642 return 0; 643 } 644 645 STORE(bch2_fs_opts_dir) 646 { 647 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir); 648 const struct bch_option *opt = container_of(attr, struct bch_option, attr); 649 int ret, id = opt - bch2_opt_table; 650 char *tmp; 651 u64 v; 652 653 /* 654 * We don't need to take c->writes for correctness, but it eliminates an 655 * unsightly error message in the dmesg log when we're RO: 656 */ 657 if (unlikely(!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs))) 658 return -EROFS; 659 660 tmp = kstrdup(buf, GFP_KERNEL); 661 if (!tmp) { 662 ret = -ENOMEM; 663 goto err; 664 } 665 666 ret = bch2_opt_parse(c, opt, strim(tmp), &v, NULL); 667 kfree(tmp); 668 669 if (ret < 0) 670 goto err; 671 672 ret = bch2_opt_check_may_set(c, id, v); 673 if (ret < 0) 674 goto err; 675 676 bch2_opt_set_sb(c, NULL, opt, v); 677 bch2_opt_set_by_id(&c->opts, id, v); 678 679 if (v && 680 (id == Opt_background_target || 681 id == Opt_background_compression || 682 (id == Opt_compression && !c->opts.background_compression))) 683 bch2_set_rebalance_needs_scan(c, 0); 684 685 ret = size; 686 err: 687 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs); 688 return ret; 689 } 690 SYSFS_OPS(bch2_fs_opts_dir); 691 692 struct attribute *bch2_fs_opts_dir_files[] = { NULL }; 693 694 int bch2_opts_create_sysfs_files(struct kobject *kobj) 695 { 696 const struct bch_option *i; 697 int ret; 698 699 for (i = bch2_opt_table; 700 i < bch2_opt_table + bch2_opts_nr; 701 i++) { 702 if (!(i->flags & OPT_FS)) 703 continue; 704 705 ret = sysfs_create_file(kobj, &i->attr); 706 if (ret) 707 return ret; 708 } 709 710 return 0; 711 } 712 713 /* time stats */ 714 715 SHOW(bch2_fs_time_stats) 716 { 717 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats); 718 719 #define x(name) \ 720 if (attr == &sysfs_time_stat_##name) \ 721 bch2_time_stats_to_text(out, &c->times[BCH_TIME_##name]); 722 BCH_TIME_STATS() 723 #undef x 724 725 return 0; 726 } 727 728 STORE(bch2_fs_time_stats) 729 { 730 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats); 731 732 #define x(name) \ 733 if (attr == &sysfs_time_stat_##name) \ 734 bch2_time_stats_reset(&c->times[BCH_TIME_##name]); 735 BCH_TIME_STATS() 736 #undef x 737 return size; 738 } 739 SYSFS_OPS(bch2_fs_time_stats); 740 741 struct attribute *bch2_fs_time_stats_files[] = { 742 #define x(name) \ 743 &sysfs_time_stat_##name, 744 BCH_TIME_STATS() 745 #undef x 746 NULL 747 }; 748 749 static const char * const bch2_rw[] = { 750 "read", 751 "write", 752 NULL 753 }; 754 755 static void dev_io_done_to_text(struct printbuf *out, struct bch_dev *ca) 756 { 757 int rw, i; 758 759 for (rw = 0; rw < 2; rw++) { 760 prt_printf(out, "%s:\n", bch2_rw[rw]); 761 762 for (i = 1; i < BCH_DATA_NR; i++) 763 prt_printf(out, "%-12s:%12llu\n", 764 bch2_data_type_str(i), 765 percpu_u64_get(&ca->io_done->sectors[rw][i]) << 9); 766 } 767 } 768 769 SHOW(bch2_dev) 770 { 771 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj); 772 struct bch_fs *c = ca->fs; 773 774 sysfs_printf(uuid, "%pU\n", ca->uuid.b); 775 776 sysfs_print(bucket_size, bucket_bytes(ca)); 777 sysfs_print(first_bucket, ca->mi.first_bucket); 778 sysfs_print(nbuckets, ca->mi.nbuckets); 779 sysfs_print(durability, ca->mi.durability); 780 sysfs_print(discard, ca->mi.discard); 781 782 if (attr == &sysfs_label) { 783 if (ca->mi.group) 784 bch2_disk_path_to_text(out, c, ca->mi.group - 1); 785 prt_char(out, '\n'); 786 } 787 788 if (attr == &sysfs_has_data) { 789 prt_bitflags(out, __bch2_data_types, bch2_dev_has_data(c, ca)); 790 prt_char(out, '\n'); 791 } 792 793 if (attr == &sysfs_state_rw) { 794 prt_string_option(out, bch2_member_states, ca->mi.state); 795 prt_char(out, '\n'); 796 } 797 798 if (attr == &sysfs_io_done) 799 dev_io_done_to_text(out, ca); 800 801 if (attr == &sysfs_io_errors) 802 bch2_dev_io_errors_to_text(out, ca); 803 804 sysfs_print(io_latency_read, atomic64_read(&ca->cur_latency[READ])); 805 sysfs_print(io_latency_write, atomic64_read(&ca->cur_latency[WRITE])); 806 807 if (attr == &sysfs_io_latency_stats_read) 808 bch2_time_stats_to_text(out, &ca->io_latency[READ].stats); 809 810 if (attr == &sysfs_io_latency_stats_write) 811 bch2_time_stats_to_text(out, &ca->io_latency[WRITE].stats); 812 813 sysfs_printf(congested, "%u%%", 814 clamp(atomic_read(&ca->congested), 0, CONGESTED_MAX) 815 * 100 / CONGESTED_MAX); 816 817 if (attr == &sysfs_alloc_debug) 818 bch2_dev_alloc_debug_to_text(out, ca); 819 820 if (attr == &sysfs_open_buckets) 821 bch2_open_buckets_to_text(out, c, ca); 822 823 return 0; 824 } 825 826 STORE(bch2_dev) 827 { 828 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj); 829 struct bch_fs *c = ca->fs; 830 831 if (attr == &sysfs_discard) { 832 bool v = strtoul_or_return(buf); 833 834 bch2_opt_set_sb(c, ca, bch2_opt_table + Opt_discard, v); 835 } 836 837 if (attr == &sysfs_durability) { 838 u64 v = strtoul_or_return(buf); 839 840 bch2_opt_set_sb(c, ca, bch2_opt_table + Opt_durability, v); 841 } 842 843 if (attr == &sysfs_label) { 844 char *tmp; 845 int ret; 846 847 tmp = kstrdup(buf, GFP_KERNEL); 848 if (!tmp) 849 return -ENOMEM; 850 851 ret = bch2_dev_group_set(c, ca, strim(tmp)); 852 kfree(tmp); 853 if (ret) 854 return ret; 855 } 856 857 if (attr == &sysfs_io_errors_reset) 858 bch2_dev_errors_reset(ca); 859 860 return size; 861 } 862 SYSFS_OPS(bch2_dev); 863 864 struct attribute *bch2_dev_files[] = { 865 &sysfs_uuid, 866 &sysfs_bucket_size, 867 &sysfs_first_bucket, 868 &sysfs_nbuckets, 869 &sysfs_durability, 870 871 /* settings: */ 872 &sysfs_discard, 873 &sysfs_state_rw, 874 &sysfs_label, 875 876 &sysfs_has_data, 877 &sysfs_io_done, 878 &sysfs_io_errors, 879 &sysfs_io_errors_reset, 880 881 &sysfs_io_latency_read, 882 &sysfs_io_latency_write, 883 &sysfs_io_latency_stats_read, 884 &sysfs_io_latency_stats_write, 885 &sysfs_congested, 886 887 /* debug: */ 888 &sysfs_alloc_debug, 889 &sysfs_open_buckets, 890 NULL 891 }; 892 893 #endif /* _BCACHEFS_SYSFS_H_ */ 894