mirror of https://gitee.com/openkylin/linux.git
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
#ifndef _FS_CEPH_OSDMAP_H
|
|
#define _FS_CEPH_OSDMAP_H
|
|
|
|
#include <linux/rbtree.h>
|
|
#include "types.h"
|
|
#include "ceph_fs.h"
|
|
#include "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_pool_info {
|
|
struct rb_node node;
|
|
int id;
|
|
struct ceph_pg_pool v;
|
|
int pg_num_mask, pgp_num_mask, lpg_num_mask, lpgp_num_mask;
|
|
};
|
|
|
|
struct ceph_pg_mapping {
|
|
struct rb_node node;
|
|
struct ceph_pg pgid;
|
|
int len;
|
|
int osds[];
|
|
};
|
|
|
|
struct ceph_osdmap {
|
|
struct ceph_fsid fsid;
|
|
u32 epoch;
|
|
u32 mkfs_epoch;
|
|
struct ceph_timespec created, modified;
|
|
|
|
u32 flags; /* CEPH_OSDMAP_* */
|
|
|
|
u32 max_osd; /* size of osd_state, _offload, _addr arrays */
|
|
u8 *osd_state; /* CEPH_OSD_* */
|
|
u32 *osd_weight; /* 0 = failed, 0x10000 = 100% normal */
|
|
struct ceph_entity_addr *osd_addr;
|
|
|
|
struct rb_root pg_temp;
|
|
struct rb_root pg_pools;
|
|
u32 pool_max;
|
|
|
|
/* the CRUSH map specifies the mapping of placement groups to
|
|
* the list of osds that store+replicate them. */
|
|
struct crush_map *crush;
|
|
};
|
|
|
|
/*
|
|
* file layout helpers
|
|
*/
|
|
#define ceph_file_layout_su(l) ((__s32)le32_to_cpu((l).fl_stripe_unit))
|
|
#define ceph_file_layout_stripe_count(l) \
|
|
((__s32)le32_to_cpu((l).fl_stripe_count))
|
|
#define ceph_file_layout_object_size(l) ((__s32)le32_to_cpu((l).fl_object_size))
|
|
#define ceph_file_layout_cas_hash(l) ((__s32)le32_to_cpu((l).fl_cas_hash))
|
|
#define ceph_file_layout_object_su(l) \
|
|
((__s32)le32_to_cpu((l).fl_object_stripe_unit))
|
|
#define ceph_file_layout_pg_preferred(l) \
|
|
((__s32)le32_to_cpu((l).fl_pg_preferred))
|
|
#define ceph_file_layout_pg_pool(l) \
|
|
((__s32)le32_to_cpu((l).fl_pg_pool))
|
|
|
|
static inline unsigned ceph_file_layout_stripe_width(struct ceph_file_layout *l)
|
|
{
|
|
return le32_to_cpu(l->fl_stripe_unit) *
|
|
le32_to_cpu(l->fl_stripe_count);
|
|
}
|
|
|
|
/* "period" == bytes before i start on a new set of objects */
|
|
static inline unsigned ceph_file_layout_period(struct ceph_file_layout *l)
|
|
{
|
|
return le32_to_cpu(l->fl_object_size) *
|
|
le32_to_cpu(l->fl_stripe_count);
|
|
}
|
|
|
|
|
|
static inline int ceph_osd_is_up(struct ceph_osdmap *map, int osd)
|
|
{
|
|
return (osd < map->max_osd) && (map->osd_state[osd] & CEPH_OSD_UP);
|
|
}
|
|
|
|
static inline bool ceph_osdmap_flag(struct ceph_osdmap *map, int flag)
|
|
{
|
|
return map && (map->flags & flag);
|
|
}
|
|
|
|
extern char *ceph_osdmap_state_str(char *str, int len, int state);
|
|
|
|
static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map,
|
|
int osd)
|
|
{
|
|
if (osd >= map->max_osd)
|
|
return NULL;
|
|
return &map->osd_addr[osd];
|
|
}
|
|
|
|
extern struct ceph_osdmap *osdmap_decode(void **p, void *end);
|
|
extern struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
|
|
struct ceph_osdmap *map,
|
|
struct ceph_messenger *msgr);
|
|
extern void ceph_osdmap_destroy(struct ceph_osdmap *map);
|
|
|
|
/* calculate mapping of a file extent to an object */
|
|
extern void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
|
|
u64 off, u64 *plen,
|
|
u64 *bno, u64 *oxoff, u64 *oxlen);
|
|
|
|
/* calculate mapping of object to a placement group */
|
|
extern int ceph_calc_object_layout(struct ceph_object_layout *ol,
|
|
const char *oid,
|
|
struct ceph_file_layout *fl,
|
|
struct ceph_osdmap *osdmap);
|
|
extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap,
|
|
struct ceph_pg pgid);
|
|
|
|
#endif
|