blob: 1f2171dd01bfa34a404eef00113646bdcb978980 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/bug.h>
#include <linux/ceph/types.h>
struct ceph_mds_client;
* mds map - describe servers in the mds cluster.
* we limit fields to those the client actually xcares about
struct ceph_mds_info {
u64 global_id;
struct ceph_entity_addr addr;
s32 state;
int num_export_targets;
bool laggy;
u32 *export_targets;
struct ceph_mdsmap {
u32 m_epoch, m_client_epoch, m_last_failure;
u32 m_root;
u32 m_session_timeout; /* seconds */
u32 m_session_autoclose; /* seconds */
u64 m_max_file_size;
* maximum size for xattrs blob.
* Zeroed by default to force the usage of the (sync) SETXATTR Op.
u64 m_max_xattr_size;
u32 m_max_mds; /* expected up:active mds number */
u32 m_num_active_mds; /* actual up:active mds number */
u32 possible_max_rank; /* possible max rank index */
struct ceph_mds_info *m_info;
/* which object pools file data can be stored in */
int m_num_data_pg_pools;
u64 *m_data_pg_pools;
u64 m_cas_pg_pool;
bool m_enabled;
bool m_damaged;
int m_num_laggy;
static inline struct ceph_entity_addr *
ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w)
if (w >= m->possible_max_rank)
return NULL;
return &m->m_info[w].addr;
static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
BUG_ON(w < 0);
if (w >= m->possible_max_rank)
return m->m_info[w].state;
static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w)
if (w >= 0 && w < m->possible_max_rank)
return m->m_info[w].laggy;
return false;
extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
struct ceph_mdsmap *ceph_mdsmap_decode(struct ceph_mds_client *mdsc, void **p,
void *end, bool msgr2);
extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);
extern bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m);