Edit File: mdsmap.h
#ifndef _FS_CEPH_MDSMAP_H #define _FS_CEPH_MDSMAP_H #include <linux/bug.h> #include <linux/ceph/types.h> /* * 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; u32 m_max_mds; /* size of m_addr, m_state arrays */ int m_num_mds; 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->m_num_mds) 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->m_num_mds) return CEPH_MDS_STATE_DNE; return m->m_info[w].state; } static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w) { if (w >= 0 && w < m->m_num_mds) return m->m_info[w].laggy; return false; } extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m); extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end); extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m); extern bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m); #endif