opts.h (991ba0211290884df42f9506499aba7e933a2bb8) opts.h (8244f3209b5b49a6bde9921d7825af9f57161b23)
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_OPTS_H
3#define _BCACHEFS_OPTS_H
4
5#include <linux/bug.h>
6#include <linux/log2.h>
7#include <linux/string.h>
8#include <linux/sysfs.h>

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39 * can pass the mount options to bch2_fs_alloc() as a whole struct, and then only
40 * apply the options from that struct that are defined.
41 */
42
43/* dummy option, for options that aren't stored in the superblock */
44LE64_BITMASK(NO_SB_OPT, struct bch_sb, flags[0], 0, 0);
45
46/* When can be set: */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_OPTS_H
3#define _BCACHEFS_OPTS_H
4
5#include <linux/bug.h>
6#include <linux/log2.h>
7#include <linux/string.h>
8#include <linux/sysfs.h>

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39 * can pass the mount options to bch2_fs_alloc() as a whole struct, and then only
40 * apply the options from that struct that are defined.
41 */
42
43/* dummy option, for options that aren't stored in the superblock */
44LE64_BITMASK(NO_SB_OPT, struct bch_sb, flags[0], 0, 0);
45
46/* When can be set: */
47enum opt_mode {
47enum opt_flags {
48 OPT_FS = (1 << 0), /* Filesystem option */
49 OPT_DEVICE = (1 << 1), /* Device option */
50 OPT_INODE = (1 << 2), /* Inode option */
51 OPT_FORMAT = (1 << 3), /* May be specified at format time */
52 OPT_MOUNT = (1 << 4), /* May be specified at mount time */
53 OPT_RUNTIME = (1 << 5), /* May be specified at runtime */
48 OPT_FS = (1 << 0), /* Filesystem option */
49 OPT_DEVICE = (1 << 1), /* Device option */
50 OPT_INODE = (1 << 2), /* Inode option */
51 OPT_FORMAT = (1 << 3), /* May be specified at format time */
52 OPT_MOUNT = (1 << 4), /* May be specified at mount time */
53 OPT_RUNTIME = (1 << 5), /* May be specified at runtime */
54 OPT_HUMAN_READABLE = (1 << 6),
55 OPT_MUST_BE_POW_2 = (1 << 7), /* Must be power of 2 */
56 OPT_SB_FIELD_SECTORS = (1 << 8),/* Superblock field is >> 9 of actual value */
57 OPT_SB_FIELD_ILOG2 = (1 << 9), /* Superblock field is ilog2 of actual value */
54};
55
56enum opt_type {
57 BCH_OPT_BOOL,
58 BCH_OPT_UINT,
58};
59
60enum opt_type {
61 BCH_OPT_BOOL,
62 BCH_OPT_UINT,
59 BCH_OPT_SECTORS,
60 BCH_OPT_STR,
61 BCH_OPT_FN,
62};
63
64/**
65 * x(name, shortopt, type, in mem type, mode, sb_opt)
66 *
67 * @name - name of mount option, sysfs attribute, and struct bch_opts

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83#ifdef __KERNEL__
84#define RATELIMIT_ERRORS_DEFAULT true
85#else
86#define RATELIMIT_ERRORS_DEFAULT false
87#endif
88
89#define BCH_OPTS() \
90 x(block_size, u16, \
63 BCH_OPT_STR,
64 BCH_OPT_FN,
65};
66
67/**
68 * x(name, shortopt, type, in mem type, mode, sb_opt)
69 *
70 * @name - name of mount option, sysfs attribute, and struct bch_opts

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86#ifdef __KERNEL__
87#define RATELIMIT_ERRORS_DEFAULT true
88#else
89#define RATELIMIT_ERRORS_DEFAULT false
90#endif
91
92#define BCH_OPTS() \
93 x(block_size, u16, \
91 OPT_FS|OPT_FORMAT, \
92 OPT_SECTORS(1, 128), \
94 OPT_FS|OPT_FORMAT| \
95 OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \
96 OPT_UINT(512, 1U << 16), \
93 BCH_SB_BLOCK_SIZE, 8, \
94 "size", NULL) \
97 BCH_SB_BLOCK_SIZE, 8, \
98 "size", NULL) \
95 x(btree_node_size, u16, \
96 OPT_FS|OPT_FORMAT, \
97 OPT_SECTORS(1, 512), \
99 x(btree_node_size, u32, \
100 OPT_FS|OPT_FORMAT| \
101 OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \
102 OPT_UINT(512, 1U << 20), \
98 BCH_SB_BTREE_NODE_SIZE, 512, \
99 "size", "Btree node size, default 256k") \
100 x(errors, u8, \
101 OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
102 OPT_STR(bch2_error_actions), \
103 BCH_SB_ERROR_ACTION, BCH_ON_ERROR_ro, \
104 NULL, "Action to take on filesystem error") \
105 x(metadata_replicas, u8, \

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193 NO_SB_OPT, true, \
194 NULL, "Stash pointer to in memory btree node in btree ptr")\
195 x(gc_reserve_percent, u8, \
196 OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
197 OPT_UINT(5, 21), \
198 BCH_SB_GC_RESERVE, 8, \
199 "%", "Percentage of disk space to reserve for copygc")\
200 x(gc_reserve_bytes, u64, \
103 BCH_SB_BTREE_NODE_SIZE, 512, \
104 "size", "Btree node size, default 256k") \
105 x(errors, u8, \
106 OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
107 OPT_STR(bch2_error_actions), \
108 BCH_SB_ERROR_ACTION, BCH_ON_ERROR_ro, \
109 NULL, "Action to take on filesystem error") \
110 x(metadata_replicas, u8, \

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198 NO_SB_OPT, true, \
199 NULL, "Stash pointer to in memory btree node in btree ptr")\
200 x(gc_reserve_percent, u8, \
201 OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
202 OPT_UINT(5, 21), \
203 BCH_SB_GC_RESERVE, 8, \
204 "%", "Percentage of disk space to reserve for copygc")\
205 x(gc_reserve_bytes, u64, \
201 OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
202 OPT_SECTORS(0, U64_MAX), \
206 OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME| \
207 OPT_HUMAN_READABLE|OPT_SB_FIELD_SECTORS, \
208 OPT_UINT(0, U64_MAX), \
203 BCH_SB_GC_RESERVE_BYTES, 0, \
204 "%", "Amount of disk space to reserve for copygc\n" \
205 "Takes precedence over gc_reserve_percent if set")\
206 x(root_reserve_percent, u8, \
207 OPT_FS|OPT_FORMAT|OPT_MOUNT, \
208 OPT_UINT(0, 100), \
209 BCH_SB_ROOT_RESERVE, 0, \
210 "%", "Percentage of disk space to reserve for superuser")\

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355 x(no_data_io, u8, \
356 OPT_MOUNT, \
357 OPT_BOOL(), \
358 NO_SB_OPT, false, \
359 NULL, "Skip submit_bio() for data reads and writes, " \
360 "for performance testing purposes") \
361 x(fs_size, u64, \
362 OPT_DEVICE, \
209 BCH_SB_GC_RESERVE_BYTES, 0, \
210 "%", "Amount of disk space to reserve for copygc\n" \
211 "Takes precedence over gc_reserve_percent if set")\
212 x(root_reserve_percent, u8, \
213 OPT_FS|OPT_FORMAT|OPT_MOUNT, \
214 OPT_UINT(0, 100), \
215 BCH_SB_ROOT_RESERVE, 0, \
216 "%", "Percentage of disk space to reserve for superuser")\

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361 x(no_data_io, u8, \
362 OPT_MOUNT, \
363 OPT_BOOL(), \
364 NO_SB_OPT, false, \
365 NULL, "Skip submit_bio() for data reads and writes, " \
366 "for performance testing purposes") \
367 x(fs_size, u64, \
368 OPT_DEVICE, \
363 OPT_SECTORS(0, S64_MAX), \
369 OPT_UINT(0, S64_MAX), \
364 NO_SB_OPT, 0, \
365 "size", "Size of filesystem on device") \
366 x(bucket, u32, \
367 OPT_DEVICE, \
370 NO_SB_OPT, 0, \
371 "size", "Size of filesystem on device") \
372 x(bucket, u32, \
373 OPT_DEVICE, \
368 OPT_SECTORS(0, S64_MAX), \
374 OPT_UINT(0, S64_MAX), \
369 NO_SB_OPT, 0, \
370 "size", "Size of filesystem on device") \
371 x(durability, u8, \
372 OPT_DEVICE, \
373 OPT_UINT(0, BCH_REPLICAS_MAX), \
374 NO_SB_OPT, 1, \
375 "n", "Data written to this device will be considered\n"\
376 "to have already been replicated n times")

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419 bch2_opts_nr
420};
421
422struct bch_fs;
423struct printbuf;
424
425struct bch_option {
426 struct attribute attr;
375 NO_SB_OPT, 0, \
376 "size", "Size of filesystem on device") \
377 x(durability, u8, \
378 OPT_DEVICE, \
379 OPT_UINT(0, BCH_REPLICAS_MAX), \
380 NO_SB_OPT, 1, \
381 "n", "Data written to this device will be considered\n"\
382 "to have already been replicated n times")

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425 bch2_opts_nr
426};
427
428struct bch_fs;
429struct printbuf;
430
431struct bch_option {
432 struct attribute attr;
433 u64 (*get_sb)(const struct bch_sb *);
427 void (*set_sb)(struct bch_sb *, u64);
434 void (*set_sb)(struct bch_sb *, u64);
428 enum opt_mode mode;
429 enum opt_type type;
435 enum opt_type type;
436 enum opt_flags flags;
437 u64 min, max;
430
431 union {
432 struct {
438
439 union {
440 struct {
433 u64 min, max;
434 };
435 struct {
436 const char * const *choices;
437 };
438 struct {
439 int (*parse)(struct bch_fs *, const char *, u64 *);
440 void (*to_text)(struct printbuf *, struct bch_fs *, u64);
441 };

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447};
448
449extern const struct bch_option bch2_opt_table[];
450
451bool bch2_opt_defined_by_id(const struct bch_opts *, enum bch_opt_id);
452u64 bch2_opt_get_by_id(const struct bch_opts *, enum bch_opt_id);
453void bch2_opt_set_by_id(struct bch_opts *, enum bch_opt_id, u64);
454
441 };
442 struct {
443 const char * const *choices;
444 };
445 struct {
446 int (*parse)(struct bch_fs *, const char *, u64 *);
447 void (*to_text)(struct printbuf *, struct bch_fs *, u64);
448 };

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454};
455
456extern const struct bch_option bch2_opt_table[];
457
458bool bch2_opt_defined_by_id(const struct bch_opts *, enum bch_opt_id);
459u64 bch2_opt_get_by_id(const struct bch_opts *, enum bch_opt_id);
460void bch2_opt_set_by_id(struct bch_opts *, enum bch_opt_id, u64);
461
455struct bch_opts bch2_opts_from_sb(struct bch_sb *);
462int bch2_opts_from_sb(struct bch_opts *, struct bch_sb *);
463void __bch2_opt_set_sb(struct bch_sb *, const struct bch_option *, u64);
464void bch2_opt_set_sb(struct bch_fs *, const struct bch_option *, u64);
456
457int bch2_opt_lookup(const char *);
465
466int bch2_opt_lookup(const char *);
458int bch2_opt_parse(struct bch_fs *, const struct bch_option *, const char *, u64 *);
467int bch2_opt_parse(struct bch_fs *, const char *, const struct bch_option *,
468 const char *, u64 *);
459
460#define OPT_SHOW_FULL_LIST (1 << 0)
461#define OPT_SHOW_MOUNT_STYLE (1 << 1)
462
463void bch2_opt_to_text(struct printbuf *, struct bch_fs *,
464 const struct bch_option *, u64, unsigned);
465
466int bch2_opt_check_may_set(struct bch_fs *, int, u64);

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470#define OPT_SHOW_FULL_LIST (1 << 0)
471#define OPT_SHOW_MOUNT_STYLE (1 << 1)
472
473void bch2_opt_to_text(struct printbuf *, struct bch_fs *,
474 const struct bch_option *, u64, unsigned);
475
476int bch2_opt_check_may_set(struct bch_fs *, int, u64);

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