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;
21 u32 m_epoch, m_client_epoch, m_last_failure;
23 u32 m_session_timeout; /* seconds */
24 u32 m_session_autoclose; /* seconds */
26 u32 m_max_mds; /* size of m_addr, m_state arrays */
27 struct ceph_mds_info *m_info;
29 /* which object pools file data can be stored in */
30 int m_num_data_pg_pools;
35 static inline struct ceph_entity_addr *
36 ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w)
38 if (w >= m->m_max_mds)
40 return &m->m_info[w].addr;
43 static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
46 if (w >= m->m_max_mds)
47 return CEPH_MDS_STATE_DNE;
48 return m->m_info[w].state;
51 static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w)
53 if (w >= 0 && w < m->m_max_mds)
54 return m->m_info[w].laggy;
58 extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
59 extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end);
60 extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);