X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Finclude%2Flustre%2Flustreapi.h;h=d2a36087284500b7c6d30f4d3a5bd4fc04b790db;hp=dc21d1a1db8facf2a03a16080f11c22aad1490dd;hb=89e43812da871bb560f3c50a0c36713ea7788e0a;hpb=1390c68c28c3f260fb96658d9559e31969f0e98a diff --git a/lustre/include/lustre/lustreapi.h b/lustre/include/lustre/lustreapi.h index dc21d1a..d2a3608 100644 --- a/lustre/include/lustre/lustreapi.h +++ b/lustre/include/lustre/lustreapi.h @@ -23,7 +23,7 @@ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2016, Intel Corporation. + * Copyright (c) 2011, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -40,14 +40,27 @@ #include #include -#include +#include + +#if defined(__cplusplus) +extern "C" { +#endif #ifndef LL_MAXQUOTAS #define LL_MAXQUOTAS 3 #endif -extern bool liblustreapi_initialized; +#ifndef ARRAY_SIZE +#define ARRAY_SIZE(a) ((sizeof(a)) / (sizeof((a)[0]))) +#endif +#define lustre_fid struct lu_fid + +/* Currently external applications can access this but in the + * future this will no longer be exposed for the user. Instead + * if you want to know if the library is initialized just call + * llapi_liblustreapi_initialized() which is now available. */ +extern bool liblustreapi_initialized; typedef void (*llapi_cb_t)(char *obd_type_name, char *obd_name, char *obd_uuid, void *args); @@ -67,6 +80,10 @@ enum llapi_message_level { typedef void (*llapi_log_callback_t)(enum llapi_message_level level, int err, const char *fmt, va_list ap); +static inline bool llapi_liblustreapi_initialized(void) +{ + return liblustreapi_initialized; +} /* the bottom three bits reserved for llapi_message_level */ #define LLAPI_MSG_MASK 0x00000007 @@ -83,10 +100,11 @@ static inline const char *llapi_msg_level2str(enum llapi_message_level level) return levels[level]; } -extern void llapi_msg_set_level(int level); + +void llapi_msg_set_level(int level); int llapi_msg_get_level(void); -extern llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb); -extern llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb); +llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb); +llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb); void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...) __attribute__((__format__(__printf__, 3, 4))); @@ -106,53 +124,64 @@ struct llapi_stripe_param { __u32 lsp_osts[0]; }; -extern int llapi_file_open_param(const char *name, int flags, mode_t mode, - const struct llapi_stripe_param *param); -extern int llapi_file_create(const char *name, unsigned long long stripe_size, - int stripe_offset, int stripe_count, - int stripe_pattern); -extern int llapi_file_open(const char *name, int flags, int mode, - unsigned long long stripe_size, int stripe_offset, - int stripe_count, int stripe_pattern); -extern int llapi_file_create_pool(const char *name, - unsigned long long stripe_size, - int stripe_offset, int stripe_count, - int stripe_pattern, char *pool_name); -extern int llapi_file_open_pool(const char *name, int flags, int mode, - unsigned long long stripe_size, - int stripe_offset, int stripe_count, - int stripe_pattern, char *pool_name); -extern int llapi_poollist(const char *name); -extern int llapi_get_poollist(const char *name, char **poollist, int list_size, - char *buffer, int buffer_size); -extern int llapi_get_poolmembers(const char *poolname, char **members, - int list_size, char *buffer, int buffer_size); -extern int llapi_file_get_stripe(const char *path, struct lov_user_md *lum); -extern int llapi_file_lookup(int dirfd, const char *name); - -#define VERBOSE_COUNT 0x1 -#define VERBOSE_SIZE 0x2 -#define VERBOSE_OFFSET 0x4 -#define VERBOSE_POOL 0x8 -#define VERBOSE_DETAIL 0x10 -#define VERBOSE_OBJID 0x20 -#define VERBOSE_GENERATION 0x40 -#define VERBOSE_MDTINDEX 0x80 -#define VERBOSE_LAYOUT 0x100 -#define VERBOSE_COMP_COUNT 0x200 -#define VERBOSE_COMP_FLAGS 0x400 -#define VERBOSE_COMP_START 0x800 -#define VERBOSE_COMP_END 0x1000 -#define VERBOSE_COMP_ID 0x2000 -#define VERBOSE_DFID 0x4000 -#define VERBOSE_HASH_TYPE 0x8000 -#define VERBOSE_DEFAULT (VERBOSE_COUNT | VERBOSE_SIZE | \ - VERBOSE_OFFSET | VERBOSE_POOL | \ - VERBOSE_OBJID | VERBOSE_GENERATION | \ - VERBOSE_LAYOUT | VERBOSE_HASH_TYPE | \ - VERBOSE_COMP_COUNT | VERBOSE_COMP_FLAGS | \ - VERBOSE_COMP_START | VERBOSE_COMP_END | \ - VERBOSE_COMP_ID) +#define lsp_tgts lsp_osts + +int llapi_file_open_param(const char *name, int flags, mode_t mode, + const struct llapi_stripe_param *param); +int llapi_file_create(const char *name, unsigned long long stripe_size, + int stripe_offset, int stripe_count, int stripe_pattern); +int llapi_file_open(const char *name, int flags, int mode, + unsigned long long stripe_size, int stripe_offset, + int stripe_count, int stripe_pattern); +int llapi_file_create_pool(const char *name, unsigned long long stripe_size, + int stripe_offset, int stripe_count, + int stripe_pattern, char *pool_name); +int llapi_file_open_pool(const char *name, int flags, int mode, + unsigned long long stripe_size, int stripe_offset, + int stripe_count, int stripe_pattern, char *pool_name); +int llapi_poollist(const char *name); +int llapi_get_poollist(const char *name, char **poollist, int list_size, + char *buffer, int buffer_size); +int llapi_get_poolmembers(const char *poolname, char **members, int list_size, + char *buffer, int buffer_size); +int llapi_file_get_stripe(const char *path, struct lov_user_md *lum); +int llapi_file_lookup(int dirfd, const char *name); +void llapi_set_command_name(const char *cmd); +void llapi_clear_command_name(void); + +enum llapi_layout_verbose { + VERBOSE_STRIPE_COUNT = 0x1, + VERBOSE_STRIPE_SIZE = 0x2, + VERBOSE_STRIPE_OFFSET = 0x4, + VERBOSE_POOL = 0x8, + VERBOSE_DETAIL = 0x10, + VERBOSE_OBJID = 0x20, + VERBOSE_GENERATION = 0x40, + VERBOSE_MDTINDEX = 0x80, + VERBOSE_PATTERN = 0x100, + VERBOSE_COMP_COUNT = 0x200, + VERBOSE_COMP_FLAGS = 0x400, + VERBOSE_COMP_START = 0x800, + VERBOSE_COMP_END = 0x1000, + VERBOSE_COMP_ID = 0x2000, + VERBOSE_DFID = 0x4000, + VERBOSE_HASH_TYPE = 0x8000, + VERBOSE_MIRROR_COUNT = 0x10000, + VERBOSE_MIRROR_ID = 0x20000, + VERBOSE_DEFAULT = VERBOSE_STRIPE_COUNT | VERBOSE_STRIPE_SIZE | + VERBOSE_STRIPE_OFFSET | VERBOSE_POOL | + VERBOSE_OBJID | VERBOSE_GENERATION | + VERBOSE_PATTERN | VERBOSE_HASH_TYPE | + VERBOSE_COMP_COUNT | VERBOSE_COMP_FLAGS | + VERBOSE_COMP_START | VERBOSE_COMP_END | + VERBOSE_COMP_ID | VERBOSE_MIRROR_COUNT | + VERBOSE_MIRROR_ID +}; +/* Compatibility with original names */ +#define VERBOSE_SIZE VERBOSE_STRIPE_SIZE +#define VERBOSE_COUNT VERBOSE_STRIPE_COUNT +#define VERBOSE_OFFSET VERBOSE_STRIPE_OFFSET +#define VERBOSE_LAYOUT VERBOSE_PATTERN struct find_param { unsigned int fp_max_depth; @@ -175,7 +204,11 @@ struct find_param { fp_comp_start_sign:2, fp_comp_end_sign:2, fp_comp_count_sign:2, - fp_mdt_count_sign:2; + fp_mirror_count_sign:2, + fp_mirror_index_sign:2, + fp_mirror_id_sign:2, + fp_mdt_count_sign:2, + fp_blocks_sign:2; unsigned long long fp_size; unsigned long long fp_size_units; @@ -210,20 +243,29 @@ struct find_param { fp_exclude_projid:1, fp_check_comp_count:1, fp_exclude_comp_count:1, + fp_check_mirror_count:1, + fp_exclude_mirror_count:1, fp_check_comp_flags:1, - fp_exclude_comp_flags:1, + fp_check_mirror_state:1, fp_check_comp_start:1, fp_exclude_comp_start:1, fp_check_comp_end:1, fp_exclude_comp_end:1, fp_check_comp_id:1, fp_exclude_comp_id:1, + fp_check_mirror_id:1, + fp_exclude_mirror_id:1, + fp_check_mirror_index:1, + fp_exclude_mirror_index:1, fp_check_mdt_count:1, fp_exclude_mdt_count:1, fp_check_hash_type:1, - fp_exclude_hash_type:1; + fp_exclude_hash_type:1, + fp_yaml:1, /* output layout in YAML */ + fp_check_blocks:1, + fp_exclude_blocks:1; - int fp_verbose; + enum llapi_layout_verbose fp_verbose; int fp_quiet; /* regular expression */ @@ -256,14 +298,22 @@ struct find_param { __u32 fp_layout; __u32 fp_comp_count; + __u32 fp_mirror_count; __u32 fp_comp_flags; + __u32 fp_comp_neg_flags; + __u16 fp_mirror_state; + __u16 fp_mirror_neg_state; __u32 fp_comp_id; + __u16 fp_mirror_id; + __u16 fp_mirror_index; unsigned long long fp_comp_start; unsigned long long fp_comp_start_units; unsigned long long fp_comp_end; unsigned long long fp_comp_end_units; unsigned long long fp_mdt_count; unsigned fp_projid; + unsigned long long fp_blocks; + unsigned long long fp_blocks_units; /* In-process parameters. */ unsigned long fp_got_uuids:1, @@ -272,104 +322,112 @@ struct find_param { unsigned int fp_hash_type; }; -extern int llapi_ostlist(char *path, struct find_param *param); -extern int llapi_uuid_match(char *real_uuid, char *search_uuid); -extern int llapi_getstripe(char *path, struct find_param *param); -extern int llapi_find(char *path, struct find_param *param); - -extern int llapi_file_fget_mdtidx(int fd, int *mdtidx); -extern int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset, - int stripe_count, int stripe_pattern, - const char *pool_name); -extern int llapi_dir_create_pool(const char *name, int flags, int stripe_offset, - int stripe_count, int stripe_pattern, - const char *poolname); +int llapi_ostlist(char *path, struct find_param *param); +int llapi_uuid_match(char *real_uuid, char *search_uuid); +int llapi_getstripe(char *path, struct find_param *param); +int llapi_find(char *path, struct find_param *param); + +int llapi_file_fget_mdtidx(int fd, int *mdtidx); +int llapi_dir_set_default_lmv(const char *name, + const struct llapi_stripe_param *param); +int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset, + int stripe_count, int stripe_pattern, + const char *pool_name); +int llapi_dir_create(const char *name, mode_t mode, + const struct llapi_stripe_param *param); +int llapi_dir_create_pool(const char *name, int flags, int stripe_offset, + int stripe_count, int stripe_pattern, + const char *poolname); int llapi_direntry_remove(char *dname); int llapi_obd_fstatfs(int fd, __u32 type, __u32 index, struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf); -extern int llapi_obd_statfs(char *path, __u32 type, __u32 index, - struct obd_statfs *stat_buf, - struct obd_uuid *uuid_buf); -extern int llapi_ping(char *obd_type, char *obd_name); -extern int llapi_target_check(int num_types, char **obd_types, char *dir); -extern int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid); -extern int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lmv_uuid); -extern int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_uuid); -extern int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count); -extern int llapi_lmv_get_uuids(int fd, struct obd_uuid *uuidp, int *mdt_count); -extern int llapi_is_lustre_mnttype(const char *type); -extern int llapi_search_ost(char *fsname, char *poolname, char *ostname); -extern int llapi_get_obd_count(char *mnt, int *count, int is_mdt); -extern int llapi_parse_size(const char *optarg, unsigned long long *size, - unsigned long long *size_units, int bytes_spec); -extern int llapi_search_mounts(const char *pathname, int index, - char *mntdir, char *fsname); -extern int llapi_search_fsname(const char *pathname, char *fsname); -extern int llapi_getname(const char *path, char *buf, size_t size); -extern int llapi_search_fileset(const char *pathname, char *fileset); - -extern int llapi_search_rootpath(char *pathname, const char *fsname); -extern int llapi_nodemap_exists(const char *name); -extern int llapi_migrate_mdt(char *path, struct find_param *param); -extern int llapi_mv(char *path, struct find_param *param); +int llapi_obd_statfs(char *path, __u32 type, __u32 index, + struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf); +int llapi_ping(char *obd_type, char *obd_name); +int llapi_target_check(int num_types, char **obd_types, char *dir); +int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid); +int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lmv_uuid); +int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_uuid); +int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count); +int llapi_lmv_get_uuids(int fd, struct obd_uuid *uuidp, int *mdt_count); +int llapi_is_lustre_mnttype(const char *type); +int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt); +int llapi_search_ost(char *fsname, char *poolname, char *ostname); +int llapi_get_obd_count(char *mnt, int *count, int is_mdt); +int llapi_parse_size(const char *optarg, unsigned long long *size, + unsigned long long *size_units, int bytes_spec); +int llapi_search_mounts(const char *pathname, int index, char *mntdir, + char *fsname); +int llapi_search_fsname(const char *pathname, char *fsname); +int llapi_getname(const char *path, char *buf, size_t size); +int llapi_search_fileset(const char *pathname, char *fileset); + +int llapi_search_rootpath(char *pathname, const char *fsname); +int llapi_nodemap_exists(const char *name); +int llapi_migrate_mdt(char *path, struct find_param *param); +int llapi_mv(char *path, struct find_param *param); struct mntent; + #define HAVE_LLAPI_IS_LUSTRE_MNT -extern int llapi_is_lustre_mnt(struct mntent *mnt); -extern int llapi_quotactl(char *mnt, struct if_quotactl *qctl); -extern int llapi_target_iterate(int type_num, char **obd_type, void *args, - llapi_cb_t cb); -extern int llapi_get_connect_flags(const char *mnt, __u64 *flags); -extern int llapi_cp(int argc, char *argv[]); -extern int llapi_ls(int argc, char *argv[]); -extern int llapi_fid2path(const char *device, const char *fidstr, char *path, - int pathlen, long long *recno, int *linkno); -extern int llapi_path2fid(const char *path, lustre_fid *fid); -extern int llapi_get_mdt_index_by_fid(int fd, const lustre_fid *fid, - int *mdt_index); -extern int llapi_fd2fid(const int fd, lustre_fid *fid); +int llapi_is_lustre_mnt(struct mntent *mnt); +int llapi_quotactl(char *mnt, struct if_quotactl *qctl); +int llapi_target_iterate(int type_num, char **obd_type, void *args, + llapi_cb_t cb); +int llapi_get_connect_flags(const char *mnt, __u64 *flags); +int llapi_cp(int argc, char *argv[]); +int llapi_ls(int argc, char *argv[]); +int llapi_fid2path(const char *device, const char *fidstr, char *path, + int pathlen, long long *recno, int *linkno); +int llapi_path2fid(const char *path, struct lu_fid *fid); +int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid, + int *mdt_index); +int llapi_fd2fid(int fd, struct lu_fid *fid); /* get FID of parent dir + the related name of entry in this parent dir */ -extern int llapi_path2parent(const char *path, unsigned int linkno, - lustre_fid *parent_fid, char *name, - size_t name_size); -extern int llapi_fd2parent(int fd, unsigned int linkno, - lustre_fid *parent_fid, char *name, - size_t name_size); -extern int llapi_chomp_string(char *buf); -extern int llapi_open_by_fid(const char *dir, const lustre_fid *fid, - int open_flags); - -extern int llapi_get_version_string(char *version, unsigned int version_size); +int llapi_path2parent(const char *path, unsigned int linkno, + struct lu_fid *parent_fid, char *name, size_t name_size); +int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid, + char *name, size_t name_size); +int llapi_chomp_string(char *buf); +int llapi_open_by_fid(const char *dir, const struct lu_fid *fid, + int open_flags); +int llapi_get_version_string(char *version, unsigned int version_size); /* llapi_get_version() is deprecated, use llapi_get_version_string() instead */ -extern int llapi_get_version(char *buffer, int buffer_size, char **version) +int llapi_get_version(char *buffer, int buffer_size, char **version) __attribute__((deprecated)); -extern int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags); -extern int llapi_hsm_state_get_fd(int fd, struct hsm_user_state *hus); -extern int llapi_hsm_state_get(const char *path, struct hsm_user_state *hus); -extern int llapi_hsm_state_set_fd(int fd, __u64 setmask, __u64 clearmask, - __u32 archive_id); -extern int llapi_hsm_state_set(const char *path, __u64 setmask, __u64 clearmask, - __u32 archive_id); -extern int llapi_hsm_register_event_fifo(const char *path); -extern int llapi_hsm_unregister_event_fifo(const char *path); -extern void llapi_hsm_log_error(enum llapi_message_level level, int _rc, - const char *fmt, va_list args); - -extern int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize); -extern int llapi_create_volatile_idx(char *directory, int idx, int mode); -static inline int llapi_create_volatile(char *directory, int mode) +int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags); +int llapi_file_flush(int fd); +extern int llapi_get_ost_layout_version(int fd, __u32 *layout_version); +int llapi_hsm_state_get_fd(int fd, struct hsm_user_state *hus); +int llapi_hsm_state_get(const char *path, struct hsm_user_state *hus); +int llapi_hsm_state_set_fd(int fd, __u64 setmask, __u64 clearmask, + __u32 archive_id); +int llapi_hsm_state_set(const char *path, __u64 setmask, __u64 clearmask, + __u32 archive_id); +int llapi_hsm_register_event_fifo(const char *path); +int llapi_hsm_unregister_event_fifo(const char *path); +void llapi_hsm_log_error(enum llapi_message_level level, int _rc, + const char *fmt, va_list args); + +int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize); +int llapi_create_volatile_idx(const char *directory, int mdt_idx, + int open_flags); +int llapi_create_volatile_param(const char *directory, int mdt_idx, + int open_flags, mode_t mode, + const struct llapi_stripe_param *stripe_param); + +static inline int llapi_create_volatile(char *directory, int open_flags) { - return llapi_create_volatile_idx(directory, -1, mode); + return llapi_create_volatile_idx(directory, -1, open_flags); } -extern int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2, - int gid, __u64 flags); -extern int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, - __u64 flags); -extern int llapi_swap_layouts(const char *path1, const char *path2, - __u64 dv1, __u64 dv2, __u64 flags); +int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2, + int gid, __u64 flags); +int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags); +int llapi_swap_layouts(const char *path1, const char *path2, __u64 dv1, + __u64 dv2, __u64 flags); /* Changelog interface. priv is private state, managed internally by these * functions */ @@ -379,15 +437,17 @@ extern int llapi_swap_layouts(const char *path1, const char *path2, * converted to extended format in the lustre api to ease changelog analysis. */ #define HAVE_CHANGELOG_EXTEND_REC 1 -extern int llapi_changelog_start(void **priv, enum changelog_send_flag flags, - const char *mdtname, long long startrec); -extern int llapi_changelog_fini(void **priv); -extern int llapi_changelog_recv(void *priv, struct changelog_rec **rech); -extern int llapi_changelog_free(struct changelog_rec **rech); -extern int llapi_changelog_get_fd(void *priv); +int llapi_changelog_start(void **priv, enum changelog_send_flag flags, + const char *mdtname, long long startrec); +int llapi_changelog_fini(void **priv); +int llapi_changelog_recv(void *priv, struct changelog_rec **rech); +int llapi_changelog_free(struct changelog_rec **rech); +int llapi_changelog_get_fd(void *priv); /* Allow records up to endrec to be destroyed; requires registered id. */ -extern int llapi_changelog_clear(const char *mdtname, const char *idstr, - long long endrec); +int llapi_changelog_clear(const char *mdtname, const char *idstr, + long long endrec); +extern int llapi_changelog_set_xflags(void *priv, + enum changelog_send_extra_flag extra_flags); /* HSM copytool interface. * priv is private state, managed internally by these functions @@ -395,52 +455,51 @@ extern int llapi_changelog_clear(const char *mdtname, const char *idstr, struct hsm_copytool_private; struct hsm_copyaction_private; -extern int llapi_hsm_copytool_register(struct hsm_copytool_private **priv, - const char *mnt, int archive_count, - int *archives, int rfd_flags); -extern int llapi_hsm_copytool_unregister(struct hsm_copytool_private **priv); -extern int llapi_hsm_copytool_get_fd(struct hsm_copytool_private *ct); -extern int llapi_hsm_copytool_recv(struct hsm_copytool_private *priv, - struct hsm_action_list **hal, int *msgsize); -extern int llapi_hsm_action_begin(struct hsm_copyaction_private **phcp, - const struct hsm_copytool_private *ct, - const struct hsm_action_item *hai, - int restore_mdt_index, int restore_open_flags, - bool is_error); -extern int llapi_hsm_action_end(struct hsm_copyaction_private **phcp, - const struct hsm_extent *he, - int hp_flags, int errval); -extern int llapi_hsm_action_progress(struct hsm_copyaction_private *hcp, - const struct hsm_extent *he, __u64 total, - int hp_flags); -extern int llapi_hsm_action_get_dfid(const struct hsm_copyaction_private *hcp, - lustre_fid *fid); -extern int llapi_hsm_action_get_fd(const struct hsm_copyaction_private *hcp); -extern int llapi_hsm_import(const char *dst, int archive, const struct stat *st, - unsigned long long stripe_size, int stripe_offset, - int stripe_count, int stripe_pattern, - char *pool_name, lustre_fid *newfid); +int llapi_hsm_copytool_register(struct hsm_copytool_private **priv, + const char *mnt, int archive_count, + int *archives, int rfd_flags); +int llapi_hsm_copytool_unregister(struct hsm_copytool_private **priv); +int llapi_hsm_copytool_get_fd(struct hsm_copytool_private *ct); +int llapi_hsm_copytool_recv(struct hsm_copytool_private *priv, + struct hsm_action_list **hal, int *msgsize); +int llapi_hsm_action_begin(struct hsm_copyaction_private **phcp, + const struct hsm_copytool_private *ct, + const struct hsm_action_item *hai, + int restore_mdt_index, int restore_open_flags, + bool is_error); +int llapi_hsm_action_end(struct hsm_copyaction_private **phcp, + const struct hsm_extent *he, int hp_flags, int errval); +int llapi_hsm_action_progress(struct hsm_copyaction_private *hcp, + const struct hsm_extent *he, __u64 total, + int hp_flags); +int llapi_hsm_action_get_dfid(const struct hsm_copyaction_private *hcp, + struct lu_fid *fid); +int llapi_hsm_action_get_fd(const struct hsm_copyaction_private *hcp); +int llapi_hsm_import(const char *dst, int archive, const struct stat *st, + unsigned long long stripe_size, int stripe_offset, + int stripe_count, int stripe_pattern, char *pool_name, + struct lu_fid *newfid); /* HSM user interface */ -extern struct hsm_user_request *llapi_hsm_user_request_alloc(int itemcount, - int data_len); -extern int llapi_hsm_request(const char *path, - const struct hsm_user_request *request); -extern int llapi_hsm_current_action(const char *path, - struct hsm_current_action *hca); +struct hsm_user_request *llapi_hsm_user_request_alloc(int itemcount, + int data_len); +int llapi_hsm_request(const char *path, const struct hsm_user_request *request); +int llapi_hsm_current_action(const char *path, struct hsm_current_action *hca); /* JSON handling */ -extern int llapi_json_init_list(struct llapi_json_item_list **item_list); -extern int llapi_json_destroy_list(struct llapi_json_item_list **item_list); -extern int llapi_json_add_item(struct llapi_json_item_list **item_list, - char *key, __u32 type, void *val); -extern int llapi_json_write_list(struct llapi_json_item_list **item_list, - FILE *fp); +int llapi_json_init_list(struct llapi_json_item_list **item_list); +int llapi_json_destroy_list(struct llapi_json_item_list **item_list); +int llapi_json_add_item(struct llapi_json_item_list **item_list, char *key, + __u32 type, void *val); +int llapi_json_write_list(struct llapi_json_item_list **item_list, FILE *fp); /* File lease */ -extern int llapi_lease_get(int fd, int mode); -extern int llapi_lease_check(int fd); -extern int llapi_lease_put(int fd); +int llapi_lease_acquire(int fd, enum ll_lease_mode mode); +int llapi_lease_release(int fd); +int llapi_lease_set(int fd, const struct ll_ioc_lease *data); +int llapi_lease_check(int fd); +int llapi_lease_get(int fd, int mode); /* obsoleted */ +int llapi_lease_put(int fd); /* obsoleted */ /* Group lock */ int llapi_group_lock(int fd, int gid); @@ -453,9 +512,33 @@ int llapi_ladvise(int fd, unsigned long long flags, int num_advise, /* llapi_layout user interface */ +/** + * An array element storing component info to be resynced during mirror + * resynchronization. + */ +struct llapi_resync_comp { + uint64_t lrc_start; + uint64_t lrc_end; + uint32_t lrc_mirror_id; + uint32_t lrc_id; /* component id */ + bool lrc_synced; +}; + /** Opaque data type abstracting the layout of a Lustre file. */ struct llapi_layout; +int llapi_mirror_truncate(int fd, unsigned int id, off_t length); +ssize_t llapi_mirror_write(int fd, unsigned int id, const void *buf, + size_t count, off_t pos); +uint32_t llapi_mirror_find(struct llapi_layout *layout, + uint64_t file_start, uint64_t file_end, + uint64_t *endp); +int llapi_mirror_find_stale(struct llapi_layout *layout, + struct llapi_resync_comp *comp, size_t comp_size, + __u16 *mirror_ids, int ids_nr); +int llapi_mirror_resync_many(int fd, struct llapi_layout *layout, + struct llapi_resync_comp *comp_array, + int comp_size, uint64_t start, uint64_t end); /* * Flags to control how layouts are retrieved. */ @@ -482,8 +565,8 @@ struct llapi_layout *llapi_layout_get_by_fd(int fd, uint32_t flags); /** * Return a pointer to a newly-allocated opaque data type containing the - * layout for the file associated with Lustre file identifier string - * \a fidstr. The string \a path must name a path within the + * layout for the file associated with Lustre file identifier + * \a fid. The string \a path must name a path within the * filesystem that contains the file being looked up, such as the * filesystem root. The returned pointer should be freed with * llapi_layout_free() when it is no longer needed. Failure is @@ -491,9 +574,35 @@ struct llapi_layout *llapi_layout_get_by_fd(int fd, uint32_t flags); * stored in errno. */ struct llapi_layout *llapi_layout_get_by_fid(const char *path, - const lustre_fid *fid, + const struct lu_fid *fid, uint32_t flags); +enum llapi_layout_xattr_flags { + LLAPI_LXF_CHECK = 0x0001, + LLAPI_LXF_COPY = 0x0002, +}; + +/** + * Return a pointer to a newly-allocated opaque data type containing the + * layout for the file associated with extended attribute \a lov_xattr. The + * length of the extended attribute is \a lov_xattr_size. The \a lov_xattr + * should be raw xattr without being swapped, since this function will swap it + * properly. Thus, \a lov_xattr will be modified during the process. If the + * \a LLAPI_LXF_CHECK flag of \a flags is set, this function will check whether + * the objects count in lum is consistent with the stripe count in lum. This + * check only apply to regular file, so \a LLAPI_LXF_CHECK flag should be + * cleared if the xattr belongs to a directory. If the \a LLAPI_LXF_COPY flag + * of \a flags is set, this function will use a temporary buffer for byte + * swapping when necessary, leaving \a lov_xattr untouched. Otherwise, the byte + * swapping will be done to the \a lov_xattr buffer directly. The returned + * pointer should be freed with llapi_layout_free() when it is no longer + * needed. Failure is * indicated with a NULL return value and an appropriate + * error code stored in errno. + */ +struct llapi_layout *llapi_layout_get_by_xattr(void *lov_xattr, + ssize_t lov_xattr_size, + uint32_t flags); + /** * Allocate a new layout. Use this when creating a new file with * llapi_layout_file_create(). @@ -505,6 +614,19 @@ struct llapi_layout *llapi_layout_alloc(void); */ void llapi_layout_free(struct llapi_layout *layout); +/** + * llapi_layout_merge() - Merge a composite layout into another one. + * @dst_layout: Destination composite layout. + * @src_layout: Source composite layout. + * + * This function copies all of the components from @src_layout and + * appends them to @dst_layout. + * + * Return: 0 on success or -1 on failure. + */ +int llapi_layout_merge(struct llapi_layout **dst_layout, + const struct llapi_layout *src_layout); + /** Not a valid stripe size, offset, or RAID pattern. */ #define LLAPI_LAYOUT_INVALID 0x1000000000000001ULL @@ -526,7 +648,8 @@ void llapi_layout_free(struct llapi_layout *layout); * stored using RAID0. That is, data will be split evenly and without * redundancy across all OSTs in the layout. */ -#define LLAPI_LAYOUT_RAID0 0 +#define LLAPI_LAYOUT_RAID0 0ULL +#define LLAPI_LAYOUT_MDT 2ULL /** * The layout includes a specific set of OSTs on which to allocate. @@ -727,6 +850,39 @@ int llapi_layout_file_create(const char *path, int open_flags, int mode, const struct llapi_layout *layout); /** + * Set flags to the header of component layout. + */ +int llapi_layout_flags_set(struct llapi_layout *layout, uint32_t flags); +int llapi_layout_flags_get(struct llapi_layout *layout, uint32_t *flags); +const char *llapi_layout_flags_string(uint32_t flags); +const __u16 llapi_layout_string_flags(char *string); + +/** + * llapi_layout_mirror_count_get() - Get mirror count from the header of + * a layout. + * @layout: Layout to get mirror count from. + * @count: Returned mirror count value. + * + * This function gets mirror count from the header of a layout. + * + * Return: 0 on success or -1 on failure. + */ +int llapi_layout_mirror_count_get(struct llapi_layout *layout, + uint16_t *count); + +/** + * llapi_layout_mirror_count_set() - Set mirror count to the header of a layout. + * @layout: Layout to set mirror count in. + * @count: Mirror count value to be set. + * + * This function sets mirror count to the header of a layout. + * + * Return: 0 on success or -1 on failure. + */ +int llapi_layout_mirror_count_set(struct llapi_layout *layout, + uint16_t count); + +/** * Fetch the start and end offset of the current layout component. */ int llapi_layout_comp_extent_get(const struct llapi_layout *layout, @@ -736,6 +892,19 @@ int llapi_layout_comp_extent_get(const struct llapi_layout *layout, */ int llapi_layout_comp_extent_set(struct llapi_layout *layout, uint64_t start, uint64_t end); + +/* PFL component flags table */ +static const struct comp_flag_name { + enum lov_comp_md_entry_flags cfn_flag; + const char *cfn_name; +} comp_flags_table[] = { + { LCME_FL_INIT, "init" }, + { LCME_FL_STALE, "stale" }, + { LCME_FL_PREF_RW, "prefer" }, + { LCME_FL_OFFLINE, "offline" }, + { LCME_FL_NOSYNC, "nosync" }, +}; + /** * Gets the attribute flags of the current component. */ @@ -754,10 +923,18 @@ int llapi_layout_comp_flags_clear(struct llapi_layout *layout, uint32_t flags); */ int llapi_layout_comp_id_get(const struct llapi_layout *layout, uint32_t *id); /** + * Fetches the mirror ID of the current layout component. + */ +int llapi_layout_mirror_id_get(const struct llapi_layout *layout, uint32_t *id); +/** * Adds one component to the existing composite or plain layout. */ int llapi_layout_comp_add(struct llapi_layout *layout); /** + * Adds a first component of a mirror to the existing composite layout. + */ +int llapi_layout_add_first_comp(struct llapi_layout *layout); +/** * Deletes the current layout component from the composite layout. */ int llapi_layout_comp_del(struct llapi_layout *layout); @@ -766,6 +943,7 @@ enum llapi_layout_comp_use { LLAPI_LAYOUT_COMP_USE_FIRST = 1, LLAPI_LAYOUT_COMP_USE_LAST = 2, LLAPI_LAYOUT_COMP_USE_NEXT = 3, + LLAPI_LAYOUT_COMP_USE_PREV = 4, }; /** @@ -782,10 +960,9 @@ int llapi_layout_comp_use(struct llapi_layout *layout, uint32_t pos); int llapi_layout_file_comp_add(const char *path, const struct llapi_layout *layout); /** - * Delete component(s) by the specified component id (accepting lcme_id - * wildcards also) from an existing file. + * Delete component(s) by the specified component id or flags. */ -int llapi_layout_file_comp_del(const char *path, uint32_t id); +int llapi_layout_file_comp_del(const char *path, uint32_t id, uint32_t flags); /** * Change flags or other parameters of the component(s) by component ID of an * existing file. The component to be modified is specified by the @@ -793,10 +970,49 @@ int llapi_layout_file_comp_del(const char *path, uint32_t id); * attributes are passed in by @comp and @valid is used to specify which * attributes in the component are going to be changed. */ -int llapi_layout_file_comp_set(const char *path, - const struct llapi_layout *comp, - uint32_t valid); +int llapi_layout_file_comp_set(const char *path, uint32_t *ids, uint32_t *flags, + size_t count); +/** + * Check if the file layout is composite. + */ +bool llapi_layout_is_composite(struct llapi_layout *layout); + +enum { + LLAPI_LAYOUT_ITER_CONT = 0, + LLAPI_LAYOUT_ITER_STOP = 1, +}; + +/** + * Iteration callback function. + * + * \retval LLAPI_LAYOUT_ITER_CONT Iteration proceeds + * \retval LLAPI_LAYOUT_ITER_STOP Stop iteration + * \retval < 0 error code + */ +typedef int (*llapi_layout_iter_cb)(struct llapi_layout *layout, void *cbdata); + +/** + * Iterate all components in the corresponding layout + */ +int llapi_layout_comp_iterate(struct llapi_layout *layout, + llapi_layout_iter_cb cb, void *cbdata); + +/** + * FLR: mirror operation APIs + */ +int llapi_mirror_set(int fd, unsigned int id); +int llapi_mirror_clear(int fd); +ssize_t llapi_mirror_read(int fd, unsigned int id, + void *buf, size_t count, off_t pos); +ssize_t llapi_mirror_copy_many(int fd, unsigned int src, + unsigned int *dst, size_t count); +int llapi_mirror_copy(int fd, unsigned int src, unsigned int dst, + off_t pos, size_t count); /** @} llapi */ +#if defined(__cplusplus) +} +#endif + #endif