osdmap.h | Explore in Territory

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_OSDMAP_H
#define _FS_CEPH_OSDMAP_H

#include <linux/rbtree.h>
#include <linux/ceph/types.h>
#include <linux/ceph/decode.h>
#include <linux/crush/crush.h>

/*
 * The osd map describes the current membership of the osd cluster and
 * specifies the mapping of objects to placement groups and placement
 * groups to (sets of) osds.  That is, it completely specifies the
 * (desired) distribution of all data objects in the system at some
 * point in time.
 *
 * Each map version is identified by an epoch, which increases monotonically.
 *
 * The map can be updated either via an incremental map (diff) describing
 * the change between two successive epochs, or as a fully encoded map.
 */
struct ceph_pg { … };

#define CEPH_SPG_NOSHARD …

struct ceph_spg { … };

int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs);
int ceph_spg_compare(const struct ceph_spg *lhs, const struct ceph_spg *rhs);

#define CEPH_POOL_FLAG_HASHPSPOOL …
#define CEPH_POOL_FLAG_FULL …
#define CEPH_POOL_FLAG_FULL_QUOTA …
#define CEPH_POOL_FLAG_NEARFULL …

struct ceph_pg_pool_info { … };

static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
{ … }

struct ceph_object_locator { … };

static inline void ceph_oloc_init(struct ceph_object_locator *oloc)
{ … }

static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc)
{ … }

void ceph_oloc_copy(struct ceph_object_locator *dest,
		    const struct ceph_object_locator *src);
void ceph_oloc_destroy(struct ceph_object_locator *oloc);

/*
 * 51-char inline_name is long enough for all cephfs and all but one
 * rbd requests: <imgname> in "<imgname>.rbd"/"rbd_id.<imgname>" can be
 * arbitrarily long (~PAGE_SIZE).  It's done once during rbd map; all
 * other rbd requests fit into inline_name.
 *
 * Makes ceph_object_id 64 bytes on 64-bit.
 */
#define CEPH_OID_INLINE_LEN …

/*
 * Both inline and external buffers have space for a NUL-terminator,
 * which is carried around.  It's not required though - RADOS object
 * names don't have to be NUL-terminated and may contain NULs.
 */
struct ceph_object_id { … };

#define __CEPH_OID_INITIALIZER(oid) …

#define CEPH_DEFINE_OID_ONSTACK(oid) …

static inline void ceph_oid_init(struct ceph_object_id *oid)
{ … }

static inline bool ceph_oid_empty(const struct ceph_object_id *oid)
{ … }

void ceph_oid_copy(struct ceph_object_id *dest,
		   const struct ceph_object_id *src);
__printf(2, 3)
void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...);
__printf(3, 4)
int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp,
		     const char *fmt, ...);
void ceph_oid_destroy(struct ceph_object_id *oid);

struct workspace_manager { … };

struct ceph_pg_mapping { … };

struct ceph_osdmap { … };

static inline bool ceph_osd_exists(struct ceph_osdmap *map, int osd)
{ … }

static inline bool ceph_osd_is_up(struct ceph_osdmap *map, int osd)
{ … }

static inline bool ceph_osd_is_down(struct ceph_osdmap *map, int osd)
{ … }

char *ceph_osdmap_state_str(char *str, int len, u32 state);
extern u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd);

static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map,
						     int osd)
{ … }

#define CEPH_PGID_ENCODING_LEN …

static inline int ceph_decode_pgid(void **p, void *end, struct ceph_pg *pgid)
{ … }

struct ceph_osdmap *ceph_osdmap_alloc(void);
struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end, bool msgr2);
struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, bool msgr2,
					     struct ceph_osdmap *map);
extern void ceph_osdmap_destroy(struct ceph_osdmap *map);

struct ceph_osds { … };

static inline void ceph_osds_init(struct ceph_osds *set)
{ … }

void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src);

bool ceph_pg_is_split(const struct ceph_pg *pgid, u32 old_pg_num,
		      u32 new_pg_num);
bool ceph_is_new_interval(const struct ceph_osds *old_acting,
			  const struct ceph_osds *new_acting,
			  const struct ceph_osds *old_up,
			  const struct ceph_osds *new_up,
			  int old_size,
			  int new_size,
			  int old_min_size,
			  int new_min_size,
			  u32 old_pg_num,
			  u32 new_pg_num,
			  bool old_sort_bitwise,
			  bool new_sort_bitwise,
			  bool old_recovery_deletes,
			  bool new_recovery_deletes,
			  const struct ceph_pg *pgid);
bool ceph_osds_changed(const struct ceph_osds *old_acting,
		       const struct ceph_osds *new_acting,
		       bool any_change);

void __ceph_object_locator_to_pg(struct ceph_pg_pool_info *pi,
				 const struct ceph_object_id *oid,
				 const struct ceph_object_locator *oloc,
				 struct ceph_pg *raw_pgid);
int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap,
			      const struct ceph_object_id *oid,
			      const struct ceph_object_locator *oloc,
			      struct ceph_pg *raw_pgid);

void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap,
			       struct ceph_pg_pool_info *pi,
			       const struct ceph_pg *raw_pgid,
			       struct ceph_osds *up,
			       struct ceph_osds *acting);
bool ceph_pg_to_primary_shard(struct ceph_osdmap *osdmap,
			      struct ceph_pg_pool_info *pi,
			      const struct ceph_pg *raw_pgid,
			      struct ceph_spg *spgid);
int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap,
			      const struct ceph_pg *raw_pgid);

struct crush_loc { … };

struct crush_loc_node { … };

int ceph_parse_crush_location(char *crush_location, struct rb_root *locs);
int ceph_compare_crush_locs(struct rb_root *locs1, struct rb_root *locs2);
void ceph_clear_crush_locs(struct rb_root *locs);

int ceph_get_crush_locality(struct ceph_osdmap *osdmap, int id,
			    struct rb_root *locs);

extern struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map,
						    u64 id);
extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id);
extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name);
u64 ceph_pg_pool_flags(struct ceph_osdmap *map, u64 id);

#endif
linux/include/linux/ceph/osdmap.h
