a7f6a5fb4b
Disk based heartbeat. Configured and started from userspace, the kernel component handles I/O submission and event generation via callback mechanism. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
|
*
|
|
* heartbeat.h
|
|
*
|
|
* Function prototypes
|
|
*
|
|
* Copyright (C) 2004 Oracle. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef O2CLUSTER_HEARTBEAT_H
|
|
#define O2CLUSTER_HEARTBEAT_H
|
|
|
|
#include "ocfs2_heartbeat.h"
|
|
|
|
#define O2HB_REGION_TIMEOUT_MS 2000
|
|
|
|
/* number of changes to be seen as live */
|
|
#define O2HB_LIVE_THRESHOLD 2
|
|
/* number of equal samples to be seen as dead */
|
|
extern unsigned int o2hb_dead_threshold;
|
|
#define O2HB_DEFAULT_DEAD_THRESHOLD 7
|
|
/* Otherwise MAX_WRITE_TIMEOUT will be zero... */
|
|
#define O2HB_MIN_DEAD_THRESHOLD 2
|
|
#define O2HB_MAX_WRITE_TIMEOUT_MS (O2HB_REGION_TIMEOUT_MS * (o2hb_dead_threshold - 1))
|
|
|
|
#define O2HB_CB_MAGIC 0x51d1e4ec
|
|
|
|
/* callback stuff */
|
|
enum o2hb_callback_type {
|
|
O2HB_NODE_DOWN_CB = 0,
|
|
O2HB_NODE_UP_CB,
|
|
O2HB_NUM_CB
|
|
};
|
|
|
|
struct o2nm_node;
|
|
typedef void (o2hb_cb_func)(struct o2nm_node *, int, void *);
|
|
|
|
struct o2hb_callback_func {
|
|
u32 hc_magic;
|
|
struct list_head hc_item;
|
|
o2hb_cb_func *hc_func;
|
|
void *hc_data;
|
|
int hc_priority;
|
|
enum o2hb_callback_type hc_type;
|
|
};
|
|
|
|
struct config_group *o2hb_alloc_hb_set(void);
|
|
void o2hb_free_hb_set(struct config_group *group);
|
|
|
|
void o2hb_setup_callback(struct o2hb_callback_func *hc,
|
|
enum o2hb_callback_type type,
|
|
o2hb_cb_func *func,
|
|
void *data,
|
|
int priority);
|
|
int o2hb_register_callback(struct o2hb_callback_func *hc);
|
|
int o2hb_unregister_callback(struct o2hb_callback_func *hc);
|
|
void o2hb_fill_node_map(unsigned long *map,
|
|
unsigned bytes);
|
|
void o2hb_init(void);
|
|
int o2hb_check_node_heartbeating(u8 node_num);
|
|
int o2hb_check_node_heartbeating_from_callback(u8 node_num);
|
|
int o2hb_check_local_node_heartbeating(void);
|
|
void o2hb_stop_all_regions(void);
|
|
|
|
#endif /* O2CLUSTER_HEARTBEAT_H */
|