1 // SPDX-License-Identifier: GPL-2.0
3 * bcache sysfs interfaces
5 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
6 * Copyright 2012 Google, Inc.
9 #ifndef NO_BCACHEFS_SYSFS
12 #include "alloc_background.h"
13 #include "alloc_foreground.h"
15 #include "btree_cache.h"
17 #include "btree_iter.h"
18 #include "btree_key_cache.h"
19 #include "btree_update.h"
20 #include "btree_update_interior.h"
24 #include "disk_groups.h"
31 #include "nocow_locking.h"
33 #include "rebalance.h"
38 #include <linux/blkdev.h>
39 #include <linux/sort.h>
40 #include <linux/sched/clock.h>
44 #define SYSFS_OPS(type) \
45 const struct sysfs_ops type ## _sysfs_ops = { \
46 .show = type ## _show, \
47 .store = type ## _store \
51 static ssize_t fn ## _to_text(struct printbuf *, \
52 struct kobject *, struct attribute *); \
54 static ssize_t fn ## _show(struct kobject *kobj, struct attribute *attr,\
57 struct printbuf out = PRINTBUF; \
58 ssize_t ret = fn ## _to_text(&out, kobj, attr); \
60 if (out.pos && out.buf[out.pos - 1] != '\n') \
63 if (!ret && out.allocation_failure) \
67 ret = min_t(size_t, out.pos, PAGE_SIZE - 1); \
68 memcpy(buf, out.buf, ret); \
70 printbuf_exit(&out); \
71 return bch2_err_class(ret); \
74 static ssize_t fn ## _to_text(struct printbuf *out, struct kobject *kobj,\
75 struct attribute *attr)
78 static ssize_t fn ## _store_inner(struct kobject *, struct attribute *,\
79 const char *, size_t); \
81 static ssize_t fn ## _store(struct kobject *kobj, struct attribute *attr,\
82 const char *buf, size_t size) \
84 return bch2_err_class(fn##_store_inner(kobj, attr, buf, size)); \
87 static ssize_t fn ## _store_inner(struct kobject *kobj, struct attribute *attr,\
88 const char *buf, size_t size)
90 #define __sysfs_attribute(_name, _mode) \
91 static struct attribute sysfs_##_name = \
92 { .name = #_name, .mode = _mode }
94 #define write_attribute(n) __sysfs_attribute(n, 0200)
95 #define read_attribute(n) __sysfs_attribute(n, 0444)
96 #define rw_attribute(n) __sysfs_attribute(n, 0644)
98 #define sysfs_printf(file, fmt, ...) \
100 if (attr == &sysfs_ ## file) \
101 prt_printf(out, fmt "\n", __VA_ARGS__); \
104 #define sysfs_print(file, var) \
106 if (attr == &sysfs_ ## file) \
110 #define sysfs_hprint(file, val) \
112 if (attr == &sysfs_ ## file) \
113 prt_human_readable_s64(out, val); \
116 #define sysfs_strtoul(file, var) \
118 if (attr == &sysfs_ ## file) \
119 return strtoul_safe(buf, var) ?: (ssize_t) size; \
122 #define sysfs_strtoul_clamp(file, var, min, max) \
124 if (attr == &sysfs_ ## file) \
125 return strtoul_safe_clamp(buf, var, min, max) \
129 #define strtoul_or_return(cp) \
132 int _r = kstrtoul(cp, 10, &_v); \
138 write_attribute(trigger_gc
);
139 write_attribute(trigger_discards
);
140 write_attribute(trigger_invalidates
);
141 write_attribute(prune_cache
);
142 write_attribute(btree_wakeup
);
143 rw_attribute(btree_gc_periodic
);
144 rw_attribute(gc_gens_pos
);
146 read_attribute(uuid
);
147 read_attribute(minor
);
148 read_attribute(bucket_size
);
149 read_attribute(first_bucket
);
150 read_attribute(nbuckets
);
151 rw_attribute(durability
);
152 read_attribute(io_done
);
153 read_attribute(io_errors
);
154 write_attribute(io_errors_reset
);
156 read_attribute(io_latency_read
);
157 read_attribute(io_latency_write
);
158 read_attribute(io_latency_stats_read
);
159 read_attribute(io_latency_stats_write
);
160 read_attribute(congested
);
162 read_attribute(btree_write_stats
);
164 read_attribute(btree_cache_size
);
165 read_attribute(compression_stats
);
166 read_attribute(journal_debug
);
167 read_attribute(btree_updates
);
168 read_attribute(btree_cache
);
169 read_attribute(btree_key_cache
);
170 read_attribute(stripes_heap
);
171 read_attribute(open_buckets
);
172 read_attribute(open_buckets_partial
);
173 read_attribute(write_points
);
174 read_attribute(nocow_lock_table
);
176 #ifdef BCH_WRITE_REF_DEBUG
177 read_attribute(write_refs
);
179 static const char * const bch2_write_refs
[] = {
186 static void bch2_write_refs_to_text(struct printbuf
*out
, struct bch_fs
*c
)
188 bch2_printbuf_tabstop_push(out
, 24);
190 for (unsigned i
= 0; i
< ARRAY_SIZE(c
->writes
); i
++) {
191 prt_str(out
, bch2_write_refs
[i
]);
193 prt_printf(out
, "%li", atomic_long_read(&c
->writes
[i
]));
199 read_attribute(internal_uuid
);
200 read_attribute(disk_groups
);
202 read_attribute(has_data
);
203 read_attribute(alloc_debug
);
205 #define x(t, n, ...) read_attribute(t);
206 BCH_PERSISTENT_COUNTERS()
209 rw_attribute(discard
);
212 rw_attribute(copy_gc_enabled
);
213 read_attribute(copy_gc_wait
);
215 rw_attribute(rebalance_enabled
);
216 sysfs_pd_controller_attribute(rebalance
);
217 read_attribute(rebalance_status
);
218 rw_attribute(promote_whole_extents
);
220 read_attribute(new_stripes
);
222 read_attribute(io_timers_read
);
223 read_attribute(io_timers_write
);
225 read_attribute(moving_ctxts
);
227 #ifdef CONFIG_BCACHEFS_TESTS
228 write_attribute(perf_test
);
229 #endif /* CONFIG_BCACHEFS_TESTS */
232 static struct attribute sysfs_time_stat_##_name = \
233 { .name = #_name, .mode = 0444 };
237 static struct attribute sysfs_state_rw
= {
242 static size_t bch2_btree_cache_size(struct bch_fs
*c
)
247 mutex_lock(&c
->btree_cache
.lock
);
248 list_for_each_entry(b
, &c
->btree_cache
.live
, list
)
249 ret
+= btree_bytes(c
);
251 mutex_unlock(&c
->btree_cache
.lock
);
255 static int bch2_compression_stats_to_text(struct printbuf
*out
, struct bch_fs
*c
)
257 struct btree_trans
*trans
;
258 struct btree_iter iter
;
261 u64 nr_uncompressed_extents
= 0,
262 nr_compressed_extents
= 0,
263 nr_incompressible_extents
= 0,
264 uncompressed_sectors
= 0,
265 incompressible_sectors
= 0,
266 compressed_sectors_compressed
= 0,
267 compressed_sectors_uncompressed
= 0;
270 if (!test_bit(BCH_FS_STARTED
, &c
->flags
))
273 trans
= bch2_trans_get(c
);
275 for (id
= 0; id
< BTREE_ID_NR
; id
++) {
276 if (!btree_type_has_ptrs(id
))
279 for_each_btree_key(trans
, iter
, id
, POS_MIN
,
280 BTREE_ITER_ALL_SNAPSHOTS
, k
, ret
) {
281 struct bkey_ptrs_c ptrs
= bch2_bkey_ptrs_c(k
);
282 const union bch_extent_entry
*entry
;
283 struct extent_ptr_decoded p
;
284 bool compressed
= false, uncompressed
= false, incompressible
= false;
286 bkey_for_each_ptr_decode(k
.k
, ptrs
, p
, entry
) {
287 switch (p
.crc
.compression_type
) {
288 case BCH_COMPRESSION_TYPE_none
:
290 uncompressed_sectors
+= k
.k
->size
;
292 case BCH_COMPRESSION_TYPE_incompressible
:
293 incompressible
= true;
294 incompressible_sectors
+= k
.k
->size
;
297 compressed_sectors_compressed
+=
298 p
.crc
.compressed_size
;
299 compressed_sectors_uncompressed
+=
300 p
.crc
.uncompressed_size
;
307 nr_incompressible_extents
++;
308 else if (uncompressed
)
309 nr_uncompressed_extents
++;
311 nr_compressed_extents
++;
313 bch2_trans_iter_exit(trans
, &iter
);
316 bch2_trans_put(trans
);
321 prt_printf(out
, "uncompressed:\n");
322 prt_printf(out
, " nr extents: %llu\n", nr_uncompressed_extents
);
323 prt_printf(out
, " size: ");
324 prt_human_readable_u64(out
, uncompressed_sectors
<< 9);
325 prt_printf(out
, "\n");
327 prt_printf(out
, "compressed:\n");
328 prt_printf(out
, " nr extents: %llu\n", nr_compressed_extents
);
329 prt_printf(out
, " compressed size: ");
330 prt_human_readable_u64(out
, compressed_sectors_compressed
<< 9);
331 prt_printf(out
, "\n");
332 prt_printf(out
, " uncompressed size: ");
333 prt_human_readable_u64(out
, compressed_sectors_uncompressed
<< 9);
334 prt_printf(out
, "\n");
336 prt_printf(out
, "incompressible:\n");
337 prt_printf(out
, " nr extents: %llu\n", nr_incompressible_extents
);
338 prt_printf(out
, " size: ");
339 prt_human_readable_u64(out
, incompressible_sectors
<< 9);
340 prt_printf(out
, "\n");
344 static void bch2_gc_gens_pos_to_text(struct printbuf
*out
, struct bch_fs
*c
)
346 prt_printf(out
, "%s: ", bch2_btree_id_str(c
->gc_gens_btree
));
347 bch2_bpos_to_text(out
, c
->gc_gens_pos
);
348 prt_printf(out
, "\n");
351 static void bch2_btree_wakeup_all(struct bch_fs
*c
)
353 struct btree_trans
*trans
;
355 seqmutex_lock(&c
->btree_trans_lock
);
356 list_for_each_entry(trans
, &c
->btree_trans_list
, list
) {
357 struct btree_bkey_cached_common
*b
= READ_ONCE(trans
->locking
);
360 six_lock_wakeup_all(&b
->lock
);
363 seqmutex_unlock(&c
->btree_trans_lock
);
368 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, kobj
);
370 sysfs_print(minor
, c
->minor
);
371 sysfs_printf(internal_uuid
, "%pU", c
->sb
.uuid
.b
);
373 sysfs_hprint(btree_cache_size
, bch2_btree_cache_size(c
));
375 if (attr
== &sysfs_btree_write_stats
)
376 bch2_btree_write_stats_to_text(out
, c
);
378 sysfs_printf(btree_gc_periodic
, "%u", (int) c
->btree_gc_periodic
);
380 if (attr
== &sysfs_gc_gens_pos
)
381 bch2_gc_gens_pos_to_text(out
, c
);
383 sysfs_printf(copy_gc_enabled
, "%i", c
->copy_gc_enabled
);
385 sysfs_printf(rebalance_enabled
, "%i", c
->rebalance
.enabled
);
386 sysfs_pd_controller_show(rebalance
, &c
->rebalance
.pd
); /* XXX */
388 if (attr
== &sysfs_copy_gc_wait
)
389 bch2_copygc_wait_to_text(out
, c
);
391 if (attr
== &sysfs_rebalance_status
)
392 bch2_rebalance_status_to_text(out
, c
);
394 sysfs_print(promote_whole_extents
, c
->promote_whole_extents
);
398 if (attr
== &sysfs_journal_debug
)
399 bch2_journal_debug_to_text(out
, &c
->journal
);
401 if (attr
== &sysfs_btree_updates
)
402 bch2_btree_updates_to_text(out
, c
);
404 if (attr
== &sysfs_btree_cache
)
405 bch2_btree_cache_to_text(out
, c
);
407 if (attr
== &sysfs_btree_key_cache
)
408 bch2_btree_key_cache_to_text(out
, &c
->btree_key_cache
);
410 if (attr
== &sysfs_stripes_heap
)
411 bch2_stripes_heap_to_text(out
, c
);
413 if (attr
== &sysfs_open_buckets
)
414 bch2_open_buckets_to_text(out
, c
);
416 if (attr
== &sysfs_open_buckets_partial
)
417 bch2_open_buckets_partial_to_text(out
, c
);
419 if (attr
== &sysfs_write_points
)
420 bch2_write_points_to_text(out
, c
);
422 if (attr
== &sysfs_compression_stats
)
423 bch2_compression_stats_to_text(out
, c
);
425 if (attr
== &sysfs_new_stripes
)
426 bch2_new_stripes_to_text(out
, c
);
428 if (attr
== &sysfs_io_timers_read
)
429 bch2_io_timers_to_text(out
, &c
->io_clock
[READ
]);
431 if (attr
== &sysfs_io_timers_write
)
432 bch2_io_timers_to_text(out
, &c
->io_clock
[WRITE
]);
434 if (attr
== &sysfs_moving_ctxts
)
435 bch2_fs_moving_ctxts_to_text(out
, c
);
437 #ifdef BCH_WRITE_REF_DEBUG
438 if (attr
== &sysfs_write_refs
)
439 bch2_write_refs_to_text(out
, c
);
442 if (attr
== &sysfs_nocow_lock_table
)
443 bch2_nocow_locks_to_text(out
, &c
->nocow_locks
);
445 if (attr
== &sysfs_disk_groups
)
446 bch2_disk_groups_to_text(out
, c
);
453 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, kobj
);
455 if (attr
== &sysfs_btree_gc_periodic
) {
456 ssize_t ret
= strtoul_safe(buf
, c
->btree_gc_periodic
)
459 wake_up_process(c
->gc_thread
);
463 if (attr
== &sysfs_copy_gc_enabled
) {
464 ssize_t ret
= strtoul_safe(buf
, c
->copy_gc_enabled
)
467 if (c
->copygc_thread
)
468 wake_up_process(c
->copygc_thread
);
472 if (attr
== &sysfs_rebalance_enabled
) {
473 ssize_t ret
= strtoul_safe(buf
, c
->rebalance
.enabled
)
480 sysfs_pd_controller_store(rebalance
, &c
->rebalance
.pd
);
482 sysfs_strtoul(promote_whole_extents
, c
->promote_whole_extents
);
486 if (!test_bit(BCH_FS_STARTED
, &c
->flags
))
491 if (!test_bit(BCH_FS_RW
, &c
->flags
))
494 if (attr
== &sysfs_prune_cache
) {
495 struct shrink_control sc
;
497 sc
.gfp_mask
= GFP_KERNEL
;
498 sc
.nr_to_scan
= strtoul_or_return(buf
);
499 c
->btree_cache
.shrink
->scan_objects(c
->btree_cache
.shrink
, &sc
);
502 if (attr
== &sysfs_btree_wakeup
)
503 bch2_btree_wakeup_all(c
);
505 if (attr
== &sysfs_trigger_gc
) {
507 * Full gc is currently incompatible with btree key cache:
510 down_read(&c
->state_lock
);
511 bch2_gc(c
, false, false);
512 up_read(&c
->state_lock
);
518 if (attr
== &sysfs_trigger_discards
)
521 if (attr
== &sysfs_trigger_invalidates
)
522 bch2_do_invalidates(c
);
524 #ifdef CONFIG_BCACHEFS_TESTS
525 if (attr
== &sysfs_perf_test
) {
526 char *tmp
= kstrdup(buf
, GFP_KERNEL
), *p
= tmp
;
527 char *test
= strsep(&p
, " \t\n");
528 char *nr_str
= strsep(&p
, " \t\n");
529 char *threads_str
= strsep(&p
, " \t\n");
535 !(ret
= kstrtouint(threads_str
, 10, &threads
)) &&
536 !(ret
= bch2_strtoull_h(nr_str
, &nr
)))
537 ret
= bch2_btree_perf_test(c
, test
, nr
, threads
);
548 struct attribute
*bch2_fs_files
[] = {
550 &sysfs_btree_cache_size
,
551 &sysfs_btree_write_stats
,
553 &sysfs_promote_whole_extents
,
555 &sysfs_compression_stats
,
557 #ifdef CONFIG_BCACHEFS_TESTS
565 SHOW(bch2_fs_counters
)
567 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, counters_kobj
);
569 u64 counter_since_mount
= 0;
571 printbuf_tabstop_push(out
, 32);
574 if (attr == &sysfs_##t) { \
575 counter = percpu_u64_get(&c->counters[BCH_COUNTER_##t]);\
576 counter_since_mount = counter - c->counters_on_mount[BCH_COUNTER_##t];\
577 prt_printf(out, "since mount:"); \
579 prt_human_readable_u64(out, counter_since_mount); \
582 prt_printf(out, "since filesystem creation:"); \
584 prt_human_readable_u64(out, counter); \
587 BCH_PERSISTENT_COUNTERS()
592 STORE(bch2_fs_counters
) {
596 SYSFS_OPS(bch2_fs_counters
);
598 struct attribute
*bch2_fs_counters_files
[] = {
601 BCH_PERSISTENT_COUNTERS()
605 /* internal dir - just a wrapper */
607 SHOW(bch2_fs_internal
)
609 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, internal
);
611 return bch2_fs_to_text(out
, &c
->kobj
, attr
);
614 STORE(bch2_fs_internal
)
616 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, internal
);
618 return bch2_fs_store(&c
->kobj
, attr
, buf
, size
);
620 SYSFS_OPS(bch2_fs_internal
);
622 struct attribute
*bch2_fs_internal_files
[] = {
623 &sysfs_journal_debug
,
624 &sysfs_btree_updates
,
626 &sysfs_btree_key_cache
,
630 &sysfs_open_buckets_partial
,
632 #ifdef BCH_WRITE_REF_DEBUG
635 &sysfs_nocow_lock_table
,
636 &sysfs_io_timers_read
,
637 &sysfs_io_timers_write
,
640 &sysfs_trigger_discards
,
641 &sysfs_trigger_invalidates
,
647 &sysfs_copy_gc_enabled
,
650 &sysfs_rebalance_enabled
,
651 &sysfs_rebalance_status
,
652 sysfs_pd_controller_files(rebalance
),
656 &sysfs_internal_uuid
,
664 SHOW(bch2_fs_opts_dir
)
666 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, opts_dir
);
667 const struct bch_option
*opt
= container_of(attr
, struct bch_option
, attr
);
668 int id
= opt
- bch2_opt_table
;
669 u64 v
= bch2_opt_get_by_id(&c
->opts
, id
);
671 bch2_opt_to_text(out
, c
, c
->disk_sb
.sb
, opt
, v
, OPT_SHOW_FULL_LIST
);
677 STORE(bch2_fs_opts_dir
)
679 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, opts_dir
);
680 const struct bch_option
*opt
= container_of(attr
, struct bch_option
, attr
);
681 int ret
, id
= opt
- bch2_opt_table
;
686 * We don't need to take c->writes for correctness, but it eliminates an
687 * unsightly error message in the dmesg log when we're RO:
689 if (unlikely(!bch2_write_ref_tryget(c
, BCH_WRITE_REF_sysfs
)))
692 tmp
= kstrdup(buf
, GFP_KERNEL
);
698 ret
= bch2_opt_parse(c
, opt
, strim(tmp
), &v
, NULL
);
704 ret
= bch2_opt_check_may_set(c
, id
, v
);
708 bch2_opt_set_sb(c
, opt
, v
);
709 bch2_opt_set_by_id(&c
->opts
, id
, v
);
711 if ((id
== Opt_background_target
||
712 id
== Opt_background_compression
) && v
)
713 bch2_set_rebalance_needs_scan(c
, 0);
717 bch2_write_ref_put(c
, BCH_WRITE_REF_sysfs
);
720 SYSFS_OPS(bch2_fs_opts_dir
);
722 struct attribute
*bch2_fs_opts_dir_files
[] = { NULL
};
724 int bch2_opts_create_sysfs_files(struct kobject
*kobj
)
726 const struct bch_option
*i
;
729 for (i
= bch2_opt_table
;
730 i
< bch2_opt_table
+ bch2_opts_nr
;
732 if (!(i
->flags
& OPT_FS
))
735 ret
= sysfs_create_file(kobj
, &i
->attr
);
745 SHOW(bch2_fs_time_stats
)
747 struct bch_fs
*c
= container_of(kobj
, struct bch_fs
, time_stats
);
750 if (attr == &sysfs_time_stat_##name) \
751 bch2_time_stats_to_text(out, &c->times[BCH_TIME_##name]);
758 STORE(bch2_fs_time_stats
)
762 SYSFS_OPS(bch2_fs_time_stats
);
764 struct attribute
*bch2_fs_time_stats_files
[] = {
766 &sysfs_time_stat_##name,
772 static void dev_alloc_debug_to_text(struct printbuf
*out
, struct bch_dev
*ca
)
774 struct bch_fs
*c
= ca
->fs
;
775 struct bch_dev_usage stats
= bch2_dev_usage_read(ca
);
776 unsigned i
, nr
[BCH_DATA_NR
];
778 memset(nr
, 0, sizeof(nr
));
780 for (i
= 0; i
< ARRAY_SIZE(c
->open_buckets
); i
++)
781 nr
[c
->open_buckets
[i
].data_type
]++;
783 printbuf_tabstop_push(out
, 8);
784 printbuf_tabstop_push(out
, 16);
785 printbuf_tabstop_push(out
, 16);
786 printbuf_tabstop_push(out
, 16);
787 printbuf_tabstop_push(out
, 16);
790 prt_str(out
, "buckets");
792 prt_str(out
, "sectors");
794 prt_str(out
, "fragmented");
798 for (i
= 0; i
< BCH_DATA_NR
; i
++) {
799 prt_str(out
, bch2_data_types
[i
]);
801 prt_u64(out
, stats
.d
[i
].buckets
);
803 prt_u64(out
, stats
.d
[i
].sectors
);
805 prt_u64(out
, stats
.d
[i
].fragmented
);
812 prt_u64(out
, stats
.buckets_ec
);
818 prt_printf(out
, "reserves:");
820 for (i
= 0; i
< BCH_WATERMARK_NR
; i
++) {
821 prt_str(out
, bch2_watermarks
[i
]);
823 prt_u64(out
, bch2_dev_buckets_reserved(ca
, i
));
830 printbuf_tabstops_reset(out
);
831 printbuf_tabstop_push(out
, 24);
833 prt_str(out
, "freelist_wait");
835 prt_str(out
, c
->freelist_wait
.list
.first
? "waiting" : "empty");
838 prt_str(out
, "open buckets allocated");
840 prt_u64(out
, OPEN_BUCKETS_COUNT
- c
->open_buckets_nr_free
);
843 prt_str(out
, "open buckets this dev");
845 prt_u64(out
, ca
->nr_open_buckets
);
848 prt_str(out
, "open buckets total");
850 prt_u64(out
, OPEN_BUCKETS_COUNT
);
853 prt_str(out
, "open_buckets_wait");
855 prt_str(out
, c
->open_buckets_wait
.list
.first
? "waiting" : "empty");
858 prt_str(out
, "open_buckets_btree");
860 prt_u64(out
, nr
[BCH_DATA_btree
]);
863 prt_str(out
, "open_buckets_user");
865 prt_u64(out
, nr
[BCH_DATA_user
]);
868 prt_str(out
, "buckets_to_invalidate");
870 prt_u64(out
, should_invalidate_buckets(ca
, stats
));
873 prt_str(out
, "btree reserve cache");
875 prt_u64(out
, c
->btree_reserve_cache_nr
);
879 static const char * const bch2_rw
[] = {
885 static void dev_io_done_to_text(struct printbuf
*out
, struct bch_dev
*ca
)
889 for (rw
= 0; rw
< 2; rw
++) {
890 prt_printf(out
, "%s:\n", bch2_rw
[rw
]);
892 for (i
= 1; i
< BCH_DATA_NR
; i
++)
893 prt_printf(out
, "%-12s:%12llu\n",
895 percpu_u64_get(&ca
->io_done
->sectors
[rw
][i
]) << 9);
901 struct bch_dev
*ca
= container_of(kobj
, struct bch_dev
, kobj
);
902 struct bch_fs
*c
= ca
->fs
;
904 sysfs_printf(uuid
, "%pU\n", ca
->uuid
.b
);
906 sysfs_print(bucket_size
, bucket_bytes(ca
));
907 sysfs_print(first_bucket
, ca
->mi
.first_bucket
);
908 sysfs_print(nbuckets
, ca
->mi
.nbuckets
);
909 sysfs_print(durability
, ca
->mi
.durability
);
910 sysfs_print(discard
, ca
->mi
.discard
);
912 if (attr
== &sysfs_label
) {
914 bch2_disk_path_to_text(out
, c
, ca
->mi
.group
- 1);
918 if (attr
== &sysfs_has_data
) {
919 prt_bitflags(out
, bch2_data_types
, bch2_dev_has_data(c
, ca
));
923 if (attr
== &sysfs_state_rw
) {
924 prt_string_option(out
, bch2_member_states
, ca
->mi
.state
);
928 if (attr
== &sysfs_io_done
)
929 dev_io_done_to_text(out
, ca
);
931 if (attr
== &sysfs_io_errors
)
932 bch2_dev_io_errors_to_text(out
, ca
);
934 sysfs_print(io_latency_read
, atomic64_read(&ca
->cur_latency
[READ
]));
935 sysfs_print(io_latency_write
, atomic64_read(&ca
->cur_latency
[WRITE
]));
937 if (attr
== &sysfs_io_latency_stats_read
)
938 bch2_time_stats_to_text(out
, &ca
->io_latency
[READ
]);
940 if (attr
== &sysfs_io_latency_stats_write
)
941 bch2_time_stats_to_text(out
, &ca
->io_latency
[WRITE
]);
943 sysfs_printf(congested
, "%u%%",
944 clamp(atomic_read(&ca
->congested
), 0, CONGESTED_MAX
)
945 * 100 / CONGESTED_MAX
);
947 if (attr
== &sysfs_alloc_debug
)
948 dev_alloc_debug_to_text(out
, ca
);
955 struct bch_dev
*ca
= container_of(kobj
, struct bch_dev
, kobj
);
956 struct bch_fs
*c
= ca
->fs
;
957 struct bch_member
*mi
;
959 if (attr
== &sysfs_discard
) {
960 bool v
= strtoul_or_return(buf
);
962 mutex_lock(&c
->sb_lock
);
963 mi
= bch2_members_v2_get_mut(c
->disk_sb
.sb
, ca
->dev_idx
);
965 if (v
!= BCH_MEMBER_DISCARD(mi
)) {
966 SET_BCH_MEMBER_DISCARD(mi
, v
);
969 mutex_unlock(&c
->sb_lock
);
972 if (attr
== &sysfs_durability
) {
973 u64 v
= strtoul_or_return(buf
);
975 mutex_lock(&c
->sb_lock
);
976 mi
= bch2_members_v2_get_mut(c
->disk_sb
.sb
, ca
->dev_idx
);
978 if (v
+ 1 != BCH_MEMBER_DURABILITY(mi
)) {
979 SET_BCH_MEMBER_DURABILITY(mi
, v
+ 1);
982 mutex_unlock(&c
->sb_lock
);
985 if (attr
== &sysfs_label
) {
989 tmp
= kstrdup(buf
, GFP_KERNEL
);
993 ret
= bch2_dev_group_set(c
, ca
, strim(tmp
));
999 if (attr
== &sysfs_io_errors_reset
)
1000 bch2_dev_errors_reset(ca
);
1004 SYSFS_OPS(bch2_dev
);
1006 struct attribute
*bch2_dev_files
[] = {
1009 &sysfs_first_bucket
,
1021 &sysfs_io_errors_reset
,
1023 &sysfs_io_latency_read
,
1024 &sysfs_io_latency_write
,
1025 &sysfs_io_latency_stats_read
,
1026 &sysfs_io_latency_stats_write
,
1034 #endif /* _BCACHEFS_SYSFS_H_ */