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/* 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;
/*
* maximum size for xattrs blob.
* Zeroed by default to force the usage of the (sync) SETXATTR Op.
*/
u64 m_max_xattr_size;
u32 m_max_mds; /* expected up:active mds number */
u32 m_num_active_mds; /* actual up:active mds number */
u32 possible_max_rank; /* possible max rank index */
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->possible_max_rank)
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->possible_max_rank)
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->possible_max_rank)
return m->m_info[w].laggy;
return false;
}
extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end, bool msgr2);
extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);
extern bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m);
#endif
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| auth.h | File | 6.59 KB | 0644 |
|
| buffer.h | File | 833 B | 0644 |
|
| ceph_debug.h | File | 907 B | 0644 |
|
| ceph_features.h | File | 8.68 KB | 0644 |
|
| ceph_frag.h | File | 1.97 KB | 0644 |
|
| ceph_fs.h | File | 28.16 KB | 0644 |
|
| ceph_hash.h | File | 472 B | 0644 |
|
| cls_lock_client.h | File | 1.72 KB | 0644 |
|
| debugfs.h | File | 362 B | 0644 |
|
| decode.h | File | 9.93 KB | 0644 |
|
| libceph.h | File | 10.28 KB | 0644 |
|
| mdsmap.h | File | 1.86 KB | 0644 |
|
| messenger.h | File | 19.31 KB | 0644 |
|
| mon_client.h | File | 3.82 KB | 0644 |
|
| msgpool.h | File | 811 B | 0644 |
|
| msgr.h | File | 7.16 KB | 0644 |
|
| osd_client.h | File | 18.26 KB | 0644 |
|
| osdmap.h | File | 9.06 KB | 0644 |
|
| pagelist.h | File | 1.92 KB | 0644 |
|
| rados.h | File | 18.85 KB | 0644 |
|
| string_table.h | File | 1.3 KB | 0644 |
|
| striper.h | File | 1.74 KB | 0644 |
|
| types.h | File | 558 B | 0644 |
|