mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 23:26:39 +07:00
82dcabad75
It is currently hard-coded in the mon_client that mdsmap and monmap subs are continuous, while osdmap sub is always "onetime". To better handle full clusters/pools in the osd_client, we need to be able to issue continuous osdmap subs. Revamp subs code to allow us to specify for each sub whether it should be continuous or not. Although not strictly required for the above, switch to SUBSCRIBE2 protocol while at it, eliminating the ambiguity between a request for "every map since X" and a request for "just the latest" when we don't have a map yet (i.e. have epoch 0). SUBSCRIBE2 feature bit is now required - it's been supported since pre-argonaut (2010). Move "got mdsmap" call to the end of ceph_mdsc_handle_map() - calling in before we validate the epoch and successfully install the new map can mess up mon_client sub state. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
#ifndef _FS_CEPH_MON_CLIENT_H
|
|
#define _FS_CEPH_MON_CLIENT_H
|
|
|
|
#include <linux/completion.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/rbtree.h>
|
|
|
|
#include <linux/ceph/messenger.h>
|
|
|
|
struct ceph_client;
|
|
struct ceph_mount_args;
|
|
struct ceph_auth_client;
|
|
|
|
/*
|
|
* The monitor map enumerates the set of all monitors.
|
|
*/
|
|
struct ceph_monmap {
|
|
struct ceph_fsid fsid;
|
|
u32 epoch;
|
|
u32 num_mon;
|
|
struct ceph_entity_inst mon_inst[0];
|
|
};
|
|
|
|
struct ceph_mon_client;
|
|
struct ceph_mon_generic_request;
|
|
|
|
|
|
/*
|
|
* Generic mechanism for resending monitor requests.
|
|
*/
|
|
typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc,
|
|
int newmon);
|
|
|
|
/* a pending monitor request */
|
|
struct ceph_mon_request {
|
|
struct ceph_mon_client *monc;
|
|
struct delayed_work delayed_work;
|
|
unsigned long delay;
|
|
ceph_monc_request_func_t do_request;
|
|
};
|
|
|
|
/*
|
|
* ceph_mon_generic_request is being used for the statfs and
|
|
* mon_get_version requests which are being done a bit differently
|
|
* because we need to get data back to the caller
|
|
*/
|
|
struct ceph_mon_generic_request {
|
|
struct kref kref;
|
|
u64 tid;
|
|
struct rb_node node;
|
|
int result;
|
|
void *buf;
|
|
struct completion completion;
|
|
struct ceph_msg *request; /* original request */
|
|
struct ceph_msg *reply; /* and reply */
|
|
};
|
|
|
|
struct ceph_mon_client {
|
|
struct ceph_client *client;
|
|
struct ceph_monmap *monmap;
|
|
|
|
struct mutex mutex;
|
|
struct delayed_work delayed_work;
|
|
|
|
struct ceph_auth_client *auth;
|
|
struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack;
|
|
int pending_auth;
|
|
|
|
bool hunting;
|
|
int cur_mon; /* last monitor i contacted */
|
|
unsigned long sub_renew_after;
|
|
unsigned long sub_renew_sent;
|
|
struct ceph_connection con;
|
|
|
|
/* pending generic requests */
|
|
struct rb_root generic_request_tree;
|
|
int num_generic_requests;
|
|
u64 last_tid;
|
|
|
|
/* subs, indexed with CEPH_SUB_* */
|
|
struct {
|
|
struct ceph_mon_subscribe_item item;
|
|
bool want;
|
|
u32 have; /* epoch */
|
|
} subs[3];
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
struct dentry *debugfs_file;
|
|
#endif
|
|
};
|
|
|
|
extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end);
|
|
extern int ceph_monmap_contains(struct ceph_monmap *m,
|
|
struct ceph_entity_addr *addr);
|
|
|
|
extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl);
|
|
extern void ceph_monc_stop(struct ceph_mon_client *monc);
|
|
|
|
enum {
|
|
CEPH_SUB_MDSMAP = 0,
|
|
CEPH_SUB_MONMAP,
|
|
CEPH_SUB_OSDMAP,
|
|
};
|
|
|
|
extern const char *ceph_sub_str[];
|
|
|
|
/*
|
|
* The model here is to indicate that we need a new map of at least
|
|
* epoch @epoch, and also call in when we receive a map. We will
|
|
* periodically rerequest the map from the monitor cluster until we
|
|
* get what we want.
|
|
*/
|
|
bool ceph_monc_want_map(struct ceph_mon_client *monc, int sub, u32 epoch,
|
|
bool continuous);
|
|
void ceph_monc_got_map(struct ceph_mon_client *monc, int sub, u32 epoch);
|
|
|
|
extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
|
|
extern int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch,
|
|
unsigned long timeout);
|
|
|
|
extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
|
|
struct ceph_statfs *buf);
|
|
|
|
extern int ceph_monc_do_get_version(struct ceph_mon_client *monc,
|
|
const char *what, u64 *newest);
|
|
|
|
extern int ceph_monc_open_session(struct ceph_mon_client *monc);
|
|
|
|
extern int ceph_monc_validate_auth(struct ceph_mon_client *monc);
|
|
|
|
#endif
|