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2f2dc053 SW |
1 | #ifndef _FS_CEPH_MDSMAP_H |
2 | #define _FS_CEPH_MDSMAP_H | |
3 | ||
4 | #include "types.h" | |
5 | ||
6 | /* | |
7 | * mds map - describe servers in the mds cluster. | |
8 | * | |
9 | * we limit fields to those the client actually xcares about | |
10 | */ | |
11 | struct ceph_mds_info { | |
94045e11 | 12 | u64 global_id; |
2f2dc053 SW |
13 | struct ceph_entity_addr addr; |
14 | s32 state; | |
15 | int num_export_targets; | |
16 | u32 *export_targets; | |
17 | }; | |
18 | ||
19 | struct ceph_mdsmap { | |
20 | u32 m_epoch, m_client_epoch, m_last_failure; | |
21 | u32 m_root; | |
22 | u32 m_session_timeout; /* seconds */ | |
23 | u32 m_session_autoclose; /* seconds */ | |
24 | u64 m_max_file_size; | |
25 | u32 m_max_mds; /* size of m_addr, m_state arrays */ | |
26 | struct ceph_mds_info *m_info; | |
27 | ||
28 | /* which object pools file data can be stored in */ | |
29 | int m_num_data_pg_pools; | |
30 | u32 *m_data_pg_pools; | |
31 | u32 m_cas_pg_pool; | |
32 | }; | |
33 | ||
34 | static inline struct ceph_entity_addr * | |
35 | ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w) | |
36 | { | |
37 | if (w >= m->m_max_mds) | |
38 | return NULL; | |
39 | return &m->m_info[w].addr; | |
40 | } | |
41 | ||
42 | static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w) | |
43 | { | |
44 | BUG_ON(w < 0); | |
45 | if (w >= m->m_max_mds) | |
46 | return CEPH_MDS_STATE_DNE; | |
47 | return m->m_info[w].state; | |
48 | } | |
49 | ||
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); | |
53 | ||
54 | #endif |