| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _BCACHEFS_OPTS_H |
| #define _BCACHEFS_OPTS_H |
| |
| #include <linux/bug.h> |
| #include <linux/log2.h> |
| #include <linux/string.h> |
| #include <linux/sysfs.h> |
| #include "bcachefs_format.h" |
| |
| struct bch_fs; |
| |
| extern const char * const bch2_error_actions[]; |
| extern const char * const bch2_fsck_fix_opts[]; |
| extern const char * const bch2_version_upgrade_opts[]; |
| extern const char * const bch2_sb_features[]; |
| extern const char * const bch2_sb_compat[]; |
| extern const char * const __bch2_btree_ids[]; |
| extern const char * const bch2_csum_opts[]; |
| extern const char * const bch2_compression_opts[]; |
| extern const char * const bch2_str_hash_types[]; |
| extern const char * const bch2_str_hash_opts[]; |
| extern const char * const __bch2_data_types[]; |
| extern const char * const bch2_member_states[]; |
| extern const char * const bch2_d_types[]; |
| |
| void bch2_prt_jset_entry_type(struct printbuf *, enum bch_jset_entry_type); |
| void bch2_prt_fs_usage_type(struct printbuf *, enum bch_fs_usage_type); |
| void bch2_prt_data_type(struct printbuf *, enum bch_data_type); |
| void bch2_prt_csum_type(struct printbuf *, enum bch_csum_type); |
| void bch2_prt_compression_type(struct printbuf *, enum bch_compression_type); |
| |
| static inline const char *bch2_d_type_str(unsigned d_type) |
| { |
| return (d_type < BCH_DT_MAX ? bch2_d_types[d_type] : NULL) ?: "(bad d_type)"; |
| } |
| |
| /* |
| * Mount options; we also store defaults in the superblock. |
| * |
| * Also exposed via sysfs: if an option is writeable, and it's also stored in |
| * the superblock, changing it via sysfs (currently? might change this) also |
| * updates the superblock. |
| * |
| * We store options as signed integers, where -1 means undefined. This means we |
| * can pass the mount options to bch2_fs_alloc() as a whole struct, and then only |
| * apply the options from that struct that are defined. |
| */ |
| |
| /* dummy option, for options that aren't stored in the superblock */ |
| u64 BCH2_NO_SB_OPT(const struct bch_sb *); |
| void SET_BCH2_NO_SB_OPT(struct bch_sb *, u64); |
| |
| /* When can be set: */ |
| enum opt_flags { |
| OPT_FS = (1 << 0), /* Filesystem option */ |
| OPT_DEVICE = (1 << 1), /* Device option */ |
| OPT_INODE = (1 << 2), /* Inode option */ |
| OPT_FORMAT = (1 << 3), /* May be specified at format time */ |
| OPT_MOUNT = (1 << 4), /* May be specified at mount time */ |
| OPT_RUNTIME = (1 << 5), /* May be specified at runtime */ |
| OPT_HUMAN_READABLE = (1 << 6), |
| OPT_MUST_BE_POW_2 = (1 << 7), /* Must be power of 2 */ |
| OPT_SB_FIELD_SECTORS = (1 << 8),/* Superblock field is >> 9 of actual value */ |
| OPT_SB_FIELD_ILOG2 = (1 << 9), /* Superblock field is ilog2 of actual value */ |
| OPT_HIDDEN = (1 << 10), |
| }; |
| |
| enum opt_type { |
| BCH_OPT_BOOL, |
| BCH_OPT_UINT, |
| BCH_OPT_STR, |
| BCH_OPT_FN, |
| }; |
| |
| struct bch_opt_fn { |
| int (*parse)(struct bch_fs *, const char *, u64 *, struct printbuf *); |
| void (*to_text)(struct printbuf *, struct bch_fs *, struct bch_sb *, u64); |
| int (*validate)(u64, struct printbuf *); |
| }; |
| |
| /** |
| * x(name, shortopt, type, in mem type, mode, sb_opt) |
| * |
| * @name - name of mount option, sysfs attribute, and struct bch_opts |
| * member |
| * |
| * @mode - when opt may be set |
| * |
| * @sb_option - name of corresponding superblock option |
| * |
| * @type - one of OPT_BOOL, OPT_UINT, OPT_STR |
| */ |
| |
| /* |
| * XXX: add fields for |
| * - default value |
| * - helptext |
| */ |
| |
| #ifdef __KERNEL__ |
| #define RATELIMIT_ERRORS_DEFAULT true |
| #else |
| #define RATELIMIT_ERRORS_DEFAULT false |
| #endif |
| |
| #ifdef CONFIG_BCACHEFS_DEBUG |
| #define BCACHEFS_VERBOSE_DEFAULT true |
| #else |
| #define BCACHEFS_VERBOSE_DEFAULT false |
| #endif |
| |
| #define BCH_FIX_ERRORS_OPTS() \ |
| x(exit, 0) \ |
| x(yes, 1) \ |
| x(no, 2) \ |
| x(ask, 3) |
| |
| enum fsck_err_opts { |
| #define x(t, n) FSCK_FIX_##t, |
| BCH_FIX_ERRORS_OPTS() |
| #undef x |
| }; |
| |
| #define BCH_OPTS() \ |
| x(block_size, u16, \ |
| OPT_FS|OPT_FORMAT| \ |
| OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \ |
| OPT_UINT(512, 1U << 16), \ |
| BCH_SB_BLOCK_SIZE, 8, \ |
| "size", NULL) \ |
| x(btree_node_size, u32, \ |
| OPT_FS|OPT_FORMAT| \ |
| OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \ |
| OPT_UINT(512, 1U << 20), \ |
| BCH_SB_BTREE_NODE_SIZE, 512, \ |
| "size", "Btree node size, default 256k") \ |
| x(errors, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_STR(bch2_error_actions), \ |
| BCH_SB_ERROR_ACTION, BCH_ON_ERROR_fix_safe, \ |
| NULL, "Action to take on filesystem error") \ |
| x(metadata_replicas, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(1, BCH_REPLICAS_MAX), \ |
| BCH_SB_META_REPLICAS_WANT, 1, \ |
| "#", "Number of metadata replicas") \ |
| x(data_replicas, u8, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(1, BCH_REPLICAS_MAX), \ |
| BCH_SB_DATA_REPLICAS_WANT, 1, \ |
| "#", "Number of data replicas") \ |
| x(metadata_replicas_required, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_UINT(1, BCH_REPLICAS_MAX), \ |
| BCH_SB_META_REPLICAS_REQ, 1, \ |
| "#", NULL) \ |
| x(data_replicas_required, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_UINT(1, BCH_REPLICAS_MAX), \ |
| BCH_SB_DATA_REPLICAS_REQ, 1, \ |
| "#", NULL) \ |
| x(encoded_extent_max, u32, \ |
| OPT_FS|OPT_FORMAT| \ |
| OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS|OPT_SB_FIELD_ILOG2,\ |
| OPT_UINT(4096, 2U << 20), \ |
| BCH_SB_ENCODED_EXTENT_MAX_BITS, 64 << 10, \ |
| "size", "Maximum size of checksummed/compressed extents")\ |
| x(metadata_checksum, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_STR(bch2_csum_opts), \ |
| BCH_SB_META_CSUM_TYPE, BCH_CSUM_OPT_crc32c, \ |
| NULL, NULL) \ |
| x(data_checksum, u8, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_STR(bch2_csum_opts), \ |
| BCH_SB_DATA_CSUM_TYPE, BCH_CSUM_OPT_crc32c, \ |
| NULL, NULL) \ |
| x(compression, u8, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_FN(bch2_opt_compression), \ |
| BCH_SB_COMPRESSION_TYPE, BCH_COMPRESSION_OPT_none, \ |
| NULL, NULL) \ |
| x(background_compression, u8, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_FN(bch2_opt_compression), \ |
| BCH_SB_BACKGROUND_COMPRESSION_TYPE,BCH_COMPRESSION_OPT_none, \ |
| NULL, NULL) \ |
| x(str_hash, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_STR(bch2_str_hash_opts), \ |
| BCH_SB_STR_HASH_TYPE, BCH_STR_HASH_OPT_siphash, \ |
| NULL, "Hash function for directory entries and xattrs")\ |
| x(metadata_target, u16, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_FN(bch2_opt_target), \ |
| BCH_SB_METADATA_TARGET, 0, \ |
| "(target)", "Device or label for metadata writes") \ |
| x(foreground_target, u16, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_FN(bch2_opt_target), \ |
| BCH_SB_FOREGROUND_TARGET, 0, \ |
| "(target)", "Device or label for foreground writes") \ |
| x(background_target, u16, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_FN(bch2_opt_target), \ |
| BCH_SB_BACKGROUND_TARGET, 0, \ |
| "(target)", "Device or label to move data to in the background")\ |
| x(promote_target, u16, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_FN(bch2_opt_target), \ |
| BCH_SB_PROMOTE_TARGET, 0, \ |
| "(target)", "Device or label to promote data to on read") \ |
| x(erasure_code, u16, \ |
| OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH_SB_ERASURE_CODE, false, \ |
| NULL, "Enable erasure coding (DO NOT USE YET)") \ |
| x(inodes_32bit, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH_SB_INODE_32BIT, true, \ |
| NULL, "Constrain inode numbers to 32 bits") \ |
| x(shard_inode_numbers, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH_SB_SHARD_INUMS, true, \ |
| NULL, "Shard new inode numbers by CPU id") \ |
| x(inodes_use_key_cache, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH_SB_INODES_USE_KEY_CACHE, true, \ |
| NULL, "Use the btree key cache for the inodes btree") \ |
| x(btree_node_mem_ptr_optimization, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, true, \ |
| NULL, "Stash pointer to in memory btree node in btree ptr")\ |
| x(gc_reserve_percent, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(5, 21), \ |
| BCH_SB_GC_RESERVE, 8, \ |
| "%", "Percentage of disk space to reserve for copygc")\ |
| x(gc_reserve_bytes, u64, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME| \ |
| OPT_HUMAN_READABLE|OPT_SB_FIELD_SECTORS, \ |
| OPT_UINT(0, U64_MAX), \ |
| BCH_SB_GC_RESERVE_BYTES, 0, \ |
| "%", "Amount of disk space to reserve for copygc\n" \ |
| "Takes precedence over gc_reserve_percent if set")\ |
| x(root_reserve_percent, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_UINT(0, 100), \ |
| BCH_SB_ROOT_RESERVE, 0, \ |
| "%", "Percentage of disk space to reserve for superuser")\ |
| x(wide_macs, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH_SB_128_BIT_MACS, false, \ |
| NULL, "Store full 128 bits of cryptographic MACs, instead of 80")\ |
| x(inline_data, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, true, \ |
| NULL, "Enable inline data extents") \ |
| x(acl, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH_SB_POSIX_ACL, true, \ |
| NULL, "Enable POSIX acls") \ |
| x(usrquota, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH_SB_USRQUOTA, false, \ |
| NULL, "Enable user quotas") \ |
| x(grpquota, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH_SB_GRPQUOTA, false, \ |
| NULL, "Enable group quotas") \ |
| x(prjquota, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH_SB_PRJQUOTA, false, \ |
| NULL, "Enable project quotas") \ |
| x(degraded, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Allow mounting in degraded mode") \ |
| x(very_degraded, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Allow mounting in when data will be missing") \ |
| x(no_splitbrain_check, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Don't kick drives out when splitbrain detected")\ |
| x(discard, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_DEVICE, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, true, \ |
| NULL, "Enable discard/TRIM support") \ |
| x(verbose, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, BCACHEFS_VERBOSE_DEFAULT, \ |
| NULL, "Extra debugging information during mount/recovery")\ |
| x(journal_flush_delay, u32, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(1, U32_MAX), \ |
| BCH_SB_JOURNAL_FLUSH_DELAY, 1000, \ |
| NULL, "Delay in milliseconds before automatic journal commits")\ |
| x(journal_flush_disabled, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH_SB_JOURNAL_FLUSH_DISABLED,false, \ |
| NULL, "Disable journal flush on sync/fsync\n" \ |
| "If enabled, writes can be lost, but only since the\n"\ |
| "last journal write (default 1 second)") \ |
| x(journal_reclaim_delay, u32, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(0, U32_MAX), \ |
| BCH_SB_JOURNAL_RECLAIM_DELAY, 100, \ |
| NULL, "Delay in milliseconds before automatic journal reclaim")\ |
| x(move_bytes_in_flight, u32, \ |
| OPT_HUMAN_READABLE|OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(1024, U32_MAX), \ |
| BCH2_NO_SB_OPT, 1U << 20, \ |
| NULL, "Maximum Amount of IO to keep in flight by the move path")\ |
| x(move_ios_in_flight, u32, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_UINT(1, 1024), \ |
| BCH2_NO_SB_OPT, 32, \ |
| NULL, "Maximum number of IOs to keep in flight by the move path")\ |
| x(fsck, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Run fsck on mount") \ |
| x(fsck_memory_usage_percent, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_UINT(20, 70), \ |
| BCH2_NO_SB_OPT, 50, \ |
| NULL, "Maximum percentage of system ram fsck is allowed to pin")\ |
| x(fix_errors, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_FN(bch2_opt_fix_errors), \ |
| BCH2_NO_SB_OPT, FSCK_FIX_exit, \ |
| NULL, "Fix errors during fsck without asking") \ |
| x(ratelimit_errors, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, RATELIMIT_ERRORS_DEFAULT, \ |
| NULL, "Ratelimit error messages during fsck") \ |
| x(nochanges, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Super read only mode - no writes at all will be issued,\n"\ |
| "even if we have to replay the journal") \ |
| x(norecovery, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Exit recovery immediately prior to journal replay")\ |
| x(recovery_pass_last, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_STR_NOLIMIT(bch2_recovery_passes), \ |
| BCH2_NO_SB_OPT, 0, \ |
| NULL, "Exit recovery after specified pass") \ |
| x(retain_recovery_info, u8, \ |
| 0, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Don't free journal entries/keys, scanned btree nodes after startup")\ |
| x(read_entire_journal, u8, \ |
| 0, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Read all journal entries, not just dirty ones")\ |
| x(read_journal_only, u8, \ |
| 0, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Only read the journal, skip the rest of recovery")\ |
| x(journal_transaction_names, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH_SB_JOURNAL_TRANSACTION_NAMES, true, \ |
| NULL, "Log transaction function names in journal") \ |
| x(noexcl, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Don't open device in exclusive mode") \ |
| x(direct_io, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, true, \ |
| NULL, "Use O_DIRECT (userspace only)") \ |
| x(sb, u64, \ |
| OPT_MOUNT, \ |
| OPT_UINT(0, S64_MAX), \ |
| BCH2_NO_SB_OPT, BCH_SB_SECTOR, \ |
| "offset", "Sector offset of superblock") \ |
| x(read_only, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_HIDDEN, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, NULL) \ |
| x(nostart, u8, \ |
| 0, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Don\'t start filesystem, only open devices") \ |
| x(reconstruct_alloc, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Reconstruct alloc btree") \ |
| x(version_upgrade, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_STR(bch2_version_upgrade_opts), \ |
| BCH_SB_VERSION_UPGRADE, BCH_VERSION_UPGRADE_compatible, \ |
| NULL, "Set superblock to latest version,\n" \ |
| "allowing any new features to be used") \ |
| x(stdio, u64, \ |
| 0, \ |
| OPT_UINT(0, S64_MAX), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Pointer to a struct stdio_redirect") \ |
| x(project, u8, \ |
| OPT_INODE, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, NULL) \ |
| x(nocow, u8, \ |
| OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME|OPT_INODE, \ |
| OPT_BOOL(), \ |
| BCH_SB_NOCOW, false, \ |
| NULL, "Nocow mode: Writes will be done in place when possible.\n"\ |
| "Snapshots and reflink will still caused writes to be COW\n"\ |
| "Implicitly disables data checksumming, compression and encryption")\ |
| x(nocow_enabled, u8, \ |
| OPT_FS|OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, true, \ |
| NULL, "Enable nocow mode: enables runtime locking in\n"\ |
| "data move path needed if nocow will ever be in use\n")\ |
| x(no_data_io, u8, \ |
| OPT_MOUNT, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, false, \ |
| NULL, "Skip submit_bio() for data reads and writes, " \ |
| "for performance testing purposes") \ |
| x(fs_size, u64, \ |
| OPT_DEVICE, \ |
| OPT_UINT(0, S64_MAX), \ |
| BCH2_NO_SB_OPT, 0, \ |
| "size", "Size of filesystem on device") \ |
| x(bucket, u32, \ |
| OPT_DEVICE, \ |
| OPT_UINT(0, S64_MAX), \ |
| BCH2_NO_SB_OPT, 0, \ |
| "size", "Size of filesystem on device") \ |
| x(durability, u8, \ |
| OPT_DEVICE, \ |
| OPT_UINT(0, BCH_REPLICAS_MAX), \ |
| BCH2_NO_SB_OPT, 1, \ |
| "n", "Data written to this device will be considered\n"\ |
| "to have already been replicated n times") \ |
| x(btree_node_prefetch, u8, \ |
| OPT_FS|OPT_MOUNT|OPT_RUNTIME, \ |
| OPT_BOOL(), \ |
| BCH2_NO_SB_OPT, true, \ |
| NULL, "BTREE_ITER_prefetch casuse btree nodes to be\n"\ |
| " prefetched sequentially") |
| |
| struct bch_opts { |
| #define x(_name, _bits, ...) unsigned _name##_defined:1; |
| BCH_OPTS() |
| #undef x |
| |
| #define x(_name, _bits, ...) _bits _name; |
| BCH_OPTS() |
| #undef x |
| }; |
| |
| struct bch2_opts_parse { |
| struct bch_opts opts; |
| |
| /* to save opts that can't be parsed before the FS is opened: */ |
| struct printbuf parse_later; |
| }; |
| |
| static const __maybe_unused struct bch_opts bch2_opts_default = { |
| #define x(_name, _bits, _mode, _type, _sb_opt, _default, ...) \ |
| ._name##_defined = true, \ |
| ._name = _default, \ |
| |
| BCH_OPTS() |
| #undef x |
| }; |
| |
| #define opt_defined(_opts, _name) ((_opts)._name##_defined) |
| |
| #define opt_get(_opts, _name) \ |
| (opt_defined(_opts, _name) ? (_opts)._name : bch2_opts_default._name) |
| |
| #define opt_set(_opts, _name, _v) \ |
| do { \ |
| (_opts)._name##_defined = true; \ |
| (_opts)._name = _v; \ |
| } while (0) |
| |
| static inline struct bch_opts bch2_opts_empty(void) |
| { |
| return (struct bch_opts) { 0 }; |
| } |
| |
| void bch2_opts_apply(struct bch_opts *, struct bch_opts); |
| |
| enum bch_opt_id { |
| #define x(_name, ...) Opt_##_name, |
| BCH_OPTS() |
| #undef x |
| bch2_opts_nr |
| }; |
| |
| struct bch_fs; |
| struct printbuf; |
| |
| struct bch_option { |
| struct attribute attr; |
| u64 (*get_sb)(const struct bch_sb *); |
| void (*set_sb)(struct bch_sb *, u64); |
| enum opt_type type; |
| enum opt_flags flags; |
| u64 min, max; |
| |
| const char * const *choices; |
| |
| struct bch_opt_fn fn; |
| |
| const char *hint; |
| const char *help; |
| |
| }; |
| |
| extern const struct bch_option bch2_opt_table[]; |
| |
| bool bch2_opt_defined_by_id(const struct bch_opts *, enum bch_opt_id); |
| u64 bch2_opt_get_by_id(const struct bch_opts *, enum bch_opt_id); |
| void bch2_opt_set_by_id(struct bch_opts *, enum bch_opt_id, u64); |
| |
| u64 bch2_opt_from_sb(struct bch_sb *, enum bch_opt_id); |
| int bch2_opts_from_sb(struct bch_opts *, struct bch_sb *); |
| void __bch2_opt_set_sb(struct bch_sb *, const struct bch_option *, u64); |
| void bch2_opt_set_sb(struct bch_fs *, const struct bch_option *, u64); |
| |
| int bch2_opt_lookup(const char *); |
| int bch2_opt_validate(const struct bch_option *, u64, struct printbuf *); |
| int bch2_opt_parse(struct bch_fs *, const struct bch_option *, |
| const char *, u64 *, struct printbuf *); |
| |
| #define OPT_SHOW_FULL_LIST (1 << 0) |
| #define OPT_SHOW_MOUNT_STYLE (1 << 1) |
| |
| void bch2_opt_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *, |
| const struct bch_option *, u64, unsigned); |
| |
| int bch2_opt_check_may_set(struct bch_fs *, int, u64); |
| int bch2_opts_check_may_set(struct bch_fs *); |
| int bch2_parse_one_mount_opt(struct bch_fs *, struct bch_opts *, |
| struct printbuf *, const char *, const char *); |
| int bch2_parse_mount_opts(struct bch_fs *, struct bch_opts *, struct printbuf *, |
| char *); |
| |
| /* inode opts: */ |
| |
| struct bch_io_opts { |
| #define x(_name, _bits) u##_bits _name; |
| BCH_INODE_OPTS() |
| #undef x |
| }; |
| |
| static inline unsigned background_compression(struct bch_io_opts opts) |
| { |
| return opts.background_compression ?: opts.compression; |
| } |
| |
| struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts); |
| bool bch2_opt_is_inode_opt(enum bch_opt_id); |
| |
| #endif /* _BCACHEFS_OPTS_H */ |
