projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 |