71 lines
1.6 KiB
C
Executable file
71 lines
1.6 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#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
|