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91f1b9fdd2
Sometimes we see IO errors due to O_DIRECT alignment issues - having an option to use buffered IO will be helpful. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
521 lines
17 KiB
C
521 lines
17 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_OPTS_H
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#define _BCACHEFS_OPTS_H
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#include <linux/bug.h>
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#include <linux/log2.h>
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#include <linux/string.h>
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#include <linux/sysfs.h>
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#include "bcachefs_format.h"
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extern const char * const bch2_metadata_versions[];
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extern const char * const bch2_error_actions[];
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extern const char * const bch2_sb_features[];
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extern const char * const bch2_sb_compat[];
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extern const char * const bch2_btree_ids[];
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extern const char * const bch2_csum_types[];
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extern const char * const bch2_csum_opts[];
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extern const char * const bch2_compression_types[];
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extern const char * const bch2_compression_opts[];
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extern const char * const bch2_str_hash_types[];
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extern const char * const bch2_str_hash_opts[];
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extern const char * const bch2_data_types[];
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extern const char * const bch2_member_states[];
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extern const char * const bch2_jset_entry_types[];
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extern const char * const bch2_fs_usage_types[];
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extern const char * const bch2_d_types[];
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static inline const char *bch2_d_type_str(unsigned d_type)
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{
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return (d_type < BCH_DT_MAX ? bch2_d_types[d_type] : NULL) ?: "(bad d_type)";
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}
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/*
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* Mount options; we also store defaults in the superblock.
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*
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* Also exposed via sysfs: if an option is writeable, and it's also stored in
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* the superblock, changing it via sysfs (currently? might change this) also
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* updates the superblock.
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*
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* We store options as signed integers, where -1 means undefined. This means we
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* can pass the mount options to bch2_fs_alloc() as a whole struct, and then only
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* apply the options from that struct that are defined.
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*/
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/* dummy option, for options that aren't stored in the superblock */
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u64 BCH2_NO_SB_OPT(const struct bch_sb *);
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void SET_BCH2_NO_SB_OPT(struct bch_sb *, u64);
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/* When can be set: */
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enum opt_flags {
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OPT_FS = (1 << 0), /* Filesystem option */
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OPT_DEVICE = (1 << 1), /* Device option */
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OPT_INODE = (1 << 2), /* Inode option */
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OPT_FORMAT = (1 << 3), /* May be specified at format time */
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OPT_MOUNT = (1 << 4), /* May be specified at mount time */
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OPT_RUNTIME = (1 << 5), /* May be specified at runtime */
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OPT_HUMAN_READABLE = (1 << 6),
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OPT_MUST_BE_POW_2 = (1 << 7), /* Must be power of 2 */
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OPT_SB_FIELD_SECTORS = (1 << 8),/* Superblock field is >> 9 of actual value */
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OPT_SB_FIELD_ILOG2 = (1 << 9), /* Superblock field is ilog2 of actual value */
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};
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enum opt_type {
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BCH_OPT_BOOL,
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BCH_OPT_UINT,
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BCH_OPT_STR,
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BCH_OPT_FN,
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};
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/**
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* x(name, shortopt, type, in mem type, mode, sb_opt)
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*
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* @name - name of mount option, sysfs attribute, and struct bch_opts
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* member
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*
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* @mode - when opt may be set
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*
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* @sb_option - name of corresponding superblock option
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*
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* @type - one of OPT_BOOL, OPT_UINT, OPT_STR
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*/
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/*
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* XXX: add fields for
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* - default value
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* - helptext
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*/
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#ifdef __KERNEL__
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#define RATELIMIT_ERRORS_DEFAULT true
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#else
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#define RATELIMIT_ERRORS_DEFAULT false
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#endif
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#define BCH_OPTS() \
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x(block_size, u16, \
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OPT_FS|OPT_FORMAT| \
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OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \
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OPT_UINT(512, 1U << 16), \
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BCH_SB_BLOCK_SIZE, 8, \
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"size", NULL) \
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x(btree_node_size, u32, \
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OPT_FS|OPT_FORMAT| \
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OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS, \
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OPT_UINT(512, 1U << 20), \
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BCH_SB_BTREE_NODE_SIZE, 512, \
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"size", "Btree node size, default 256k") \
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x(errors, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_STR(bch2_error_actions), \
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BCH_SB_ERROR_ACTION, BCH_ON_ERROR_ro, \
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NULL, "Action to take on filesystem error") \
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x(metadata_replicas, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_UINT(1, BCH_REPLICAS_MAX), \
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BCH_SB_META_REPLICAS_WANT, 1, \
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"#", "Number of metadata replicas") \
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x(data_replicas, u8, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_UINT(1, BCH_REPLICAS_MAX), \
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BCH_SB_DATA_REPLICAS_WANT, 1, \
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"#", "Number of data replicas") \
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x(metadata_replicas_required, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_UINT(1, BCH_REPLICAS_MAX), \
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BCH_SB_META_REPLICAS_REQ, 1, \
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"#", NULL) \
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x(data_replicas_required, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_UINT(1, BCH_REPLICAS_MAX), \
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BCH_SB_DATA_REPLICAS_REQ, 1, \
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"#", NULL) \
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x(encoded_extent_max, u32, \
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OPT_FS|OPT_FORMAT| \
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OPT_HUMAN_READABLE|OPT_MUST_BE_POW_2|OPT_SB_FIELD_SECTORS|OPT_SB_FIELD_ILOG2,\
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OPT_UINT(4096, 2U << 20), \
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BCH_SB_ENCODED_EXTENT_MAX_BITS, 64 << 10, \
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"size", "Maximum size of checksummed/compressed extents")\
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x(metadata_checksum, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_STR(bch2_csum_opts), \
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BCH_SB_META_CSUM_TYPE, BCH_CSUM_OPT_crc32c, \
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NULL, NULL) \
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x(data_checksum, u8, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_STR(bch2_csum_opts), \
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BCH_SB_DATA_CSUM_TYPE, BCH_CSUM_OPT_crc32c, \
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NULL, NULL) \
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x(compression, u8, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_STR(bch2_compression_opts), \
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BCH_SB_COMPRESSION_TYPE, BCH_COMPRESSION_OPT_none, \
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NULL, NULL) \
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x(background_compression, u8, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_STR(bch2_compression_opts), \
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BCH_SB_BACKGROUND_COMPRESSION_TYPE,BCH_COMPRESSION_OPT_none, \
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NULL, NULL) \
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x(str_hash, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_STR(bch2_str_hash_opts), \
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BCH_SB_STR_HASH_TYPE, BCH_STR_HASH_OPT_siphash, \
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NULL, "Hash function for directory entries and xattrs")\
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x(metadata_target, u16, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_FN(bch2_opt_target), \
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BCH_SB_METADATA_TARGET, 0, \
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"(target)", "Device or label for metadata writes") \
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x(foreground_target, u16, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_FN(bch2_opt_target), \
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BCH_SB_FOREGROUND_TARGET, 0, \
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"(target)", "Device or label for foreground writes") \
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x(background_target, u16, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_FN(bch2_opt_target), \
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BCH_SB_BACKGROUND_TARGET, 0, \
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"(target)", "Device or label to move data to in the background")\
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x(promote_target, u16, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_FN(bch2_opt_target), \
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BCH_SB_PROMOTE_TARGET, 0, \
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"(target)", "Device or label to promote data to on read") \
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x(erasure_code, u16, \
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OPT_FS|OPT_INODE|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH_SB_ERASURE_CODE, false, \
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NULL, "Enable erasure coding (DO NOT USE YET)") \
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x(inodes_32bit, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH_SB_INODE_32BIT, true, \
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NULL, "Constrain inode numbers to 32 bits") \
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x(shard_inode_numbers, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH_SB_SHARD_INUMS, true, \
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NULL, "Shard new inode numbers by CPU id") \
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x(inodes_use_key_cache, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH_SB_INODES_USE_KEY_CACHE, true, \
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NULL, "Use the btree key cache for the inodes btree") \
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x(btree_node_mem_ptr_optimization, u8, \
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OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, true, \
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NULL, "Stash pointer to in memory btree node in btree ptr")\
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x(gc_reserve_percent, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_UINT(5, 21), \
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BCH_SB_GC_RESERVE, 8, \
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"%", "Percentage of disk space to reserve for copygc")\
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x(gc_reserve_bytes, u64, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME| \
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OPT_HUMAN_READABLE|OPT_SB_FIELD_SECTORS, \
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OPT_UINT(0, U64_MAX), \
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BCH_SB_GC_RESERVE_BYTES, 0, \
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"%", "Amount of disk space to reserve for copygc\n" \
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"Takes precedence over gc_reserve_percent if set")\
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x(root_reserve_percent, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_UINT(0, 100), \
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BCH_SB_ROOT_RESERVE, 0, \
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"%", "Percentage of disk space to reserve for superuser")\
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x(wide_macs, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH_SB_128_BIT_MACS, false, \
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NULL, "Store full 128 bits of cryptographic MACs, instead of 80")\
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x(inline_data, u8, \
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OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, true, \
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NULL, "Enable inline data extents") \
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x(acl, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH_SB_POSIX_ACL, true, \
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NULL, "Enable POSIX acls") \
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x(usrquota, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH_SB_USRQUOTA, false, \
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NULL, "Enable user quotas") \
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x(grpquota, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH_SB_GRPQUOTA, false, \
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NULL, "Enable group quotas") \
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x(prjquota, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH_SB_PRJQUOTA, false, \
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NULL, "Enable project quotas") \
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x(degraded, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Allow mounting in degraded mode") \
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x(very_degraded, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Allow mounting in when data will be missing") \
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x(discard, u8, \
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OPT_FS|OPT_MOUNT|OPT_DEVICE, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, true, \
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NULL, "Enable discard/TRIM support") \
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x(verbose, u8, \
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OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Extra debugging information during mount/recovery")\
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x(journal_flush_delay, u32, \
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OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_UINT(1, U32_MAX), \
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BCH_SB_JOURNAL_FLUSH_DELAY, 1000, \
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NULL, "Delay in milliseconds before automatic journal commits")\
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x(journal_flush_disabled, u8, \
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OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH_SB_JOURNAL_FLUSH_DISABLED,false, \
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NULL, "Disable journal flush on sync/fsync\n" \
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"If enabled, writes can be lost, but only since the\n"\
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"last journal write (default 1 second)") \
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x(journal_reclaim_delay, u32, \
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OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_UINT(0, U32_MAX), \
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BCH_SB_JOURNAL_RECLAIM_DELAY, 100, \
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NULL, "Delay in milliseconds before automatic journal reclaim")\
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x(move_bytes_in_flight, u32, \
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OPT_HUMAN_READABLE|OPT_FS|OPT_MOUNT|OPT_RUNTIME, \
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OPT_UINT(1024, U32_MAX), \
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BCH2_NO_SB_OPT, 1U << 20, \
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NULL, "Amount of IO in flight to keep in flight by the move path")\
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x(fsck, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Run fsck on mount") \
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x(fix_errors, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Fix errors during fsck without asking") \
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x(ratelimit_errors, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, RATELIMIT_ERRORS_DEFAULT, \
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NULL, "Ratelimit error messages during fsck") \
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x(nochanges, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Super read only mode - no writes at all will be issued,\n"\
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"even if we have to replay the journal") \
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x(norecovery, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Don't replay the journal") \
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x(keep_journal, u8, \
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0, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Don't free journal entries/keys after startup")\
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x(read_entire_journal, u8, \
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0, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Read all journal entries, not just dirty ones")\
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x(read_journal_only, u8, \
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0, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Only read the journal, skip the rest of recovery")\
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x(journal_transaction_names, u8, \
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OPT_FS|OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
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OPT_BOOL(), \
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BCH_SB_JOURNAL_TRANSACTION_NAMES, true, \
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NULL, "Log transaction function names in journal") \
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x(noexcl, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Don't open device in exclusive mode") \
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x(direct_io, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, true, \
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NULL, "Use O_DIRECT (userspace only)") \
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x(sb, u64, \
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OPT_MOUNT, \
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OPT_UINT(0, S64_MAX), \
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BCH2_NO_SB_OPT, BCH_SB_SECTOR, \
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"offset", "Sector offset of superblock") \
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x(read_only, u8, \
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OPT_FS, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, NULL) \
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x(nostart, u8, \
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0, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Don\'t start filesystem, only open devices") \
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x(reconstruct_alloc, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Reconstruct alloc btree") \
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x(version_upgrade, u8, \
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OPT_FS|OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Set superblock to latest version,\n" \
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"allowing any new features to be used") \
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x(buckets_nouse, u8, \
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0, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Allocate the buckets_nouse bitmap") \
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x(project, u8, \
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OPT_INODE, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, NULL) \
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x(no_data_io, u8, \
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OPT_MOUNT, \
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OPT_BOOL(), \
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BCH2_NO_SB_OPT, false, \
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NULL, "Skip submit_bio() for data reads and writes, " \
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"for performance testing purposes") \
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x(fs_size, u64, \
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OPT_DEVICE, \
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OPT_UINT(0, S64_MAX), \
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BCH2_NO_SB_OPT, 0, \
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"size", "Size of filesystem on device") \
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x(bucket, u32, \
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OPT_DEVICE, \
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OPT_UINT(0, S64_MAX), \
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BCH2_NO_SB_OPT, 0, \
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"size", "Size of filesystem on device") \
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x(durability, u8, \
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OPT_DEVICE, \
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OPT_UINT(0, BCH_REPLICAS_MAX), \
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BCH2_NO_SB_OPT, 1, \
|
|
"n", "Data written to this device will be considered\n"\
|
|
"to have already been replicated n times")
|
|
|
|
struct bch_opts {
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|
#define x(_name, _bits, ...) unsigned _name##_defined:1;
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|
BCH_OPTS()
|
|
#undef x
|
|
|
|
#define x(_name, _bits, ...) _bits _name;
|
|
BCH_OPTS()
|
|
#undef x
|
|
};
|
|
|
|
static const 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;
|
|
int (*parse)(struct bch_fs *, const char *, u64 *);
|
|
void (*to_text)(struct printbuf *, struct bch_fs *, struct bch_sb *, u64);
|
|
|
|
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_mount_opts(struct bch_fs *, struct bch_opts *, char *);
|
|
|
|
/* inode opts: */
|
|
|
|
struct bch_io_opts {
|
|
#define x(_name, _bits) unsigned _name##_defined:1;
|
|
BCH_INODE_OPTS()
|
|
#undef x
|
|
|
|
#define x(_name, _bits) u##_bits _name;
|
|
BCH_INODE_OPTS()
|
|
#undef x
|
|
};
|
|
|
|
struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts);
|
|
struct bch_opts bch2_inode_opts_to_opts(struct bch_io_opts);
|
|
void bch2_io_opts_apply(struct bch_io_opts *, struct bch_io_opts);
|
|
bool bch2_opt_is_inode_opt(enum bch_opt_id);
|
|
|
|
#endif /* _BCACHEFS_OPTS_H */
|