1 #ifndef _FS_CEPH_MDSMAP_H
2 #define _FS_CEPH_MDSMAP_H
7 * mds map - describe servers in the mds cluster.
9 * we limit fields to those the client actually xcares about
11 struct ceph_mds_info {
13 struct ceph_entity_addr addr;
15 int num_export_targets;
20 u32 m_epoch, m_client_epoch, m_last_failure;
22 u32 m_session_timeout; /* seconds */
23 u32 m_session_autoclose; /* seconds */
25 u32 m_max_mds; /* size of m_addr, m_state arrays */
26 struct ceph_mds_info *m_info;
28 /* which object pools file data can be stored in */
29 int m_num_data_pg_pools;
34 static inline struct ceph_entity_addr *
35 ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w)
37 if (w >= m->m_max_mds)
39 return &m->m_info[w].addr;
42 static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
45 if (w >= m->m_max_mds)
46 return CEPH_MDS_STATE_DNE;
47 return m->m_info[w].state;
50 extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
51 extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end);
52 extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);