1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * Register ourselves with the heartbaet service, keep our node maps
7 * up to date, and fire off recovery when needed.
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public
22 * License along with this program; if not, write to the
23 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 021110-1307, USA.
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <linux/highmem.h>
31 #include <linux/kmod.h>
33 #define MLOG_MASK_PREFIX ML_SUPER
34 #include <cluster/masklog.h>
39 #include "heartbeat.h"
43 #include "buffer_head_io.h"
45 static inline void __ocfs2_node_map_set_bit(struct ocfs2_node_map *map,
47 static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map,
50 /* special case -1 for now
51 * TODO: should *really* make sure the calling func never passes -1!! */
52 static void ocfs2_node_map_init(struct ocfs2_node_map *map)
54 map->num_nodes = OCFS2_NODE_MAP_MAX_NODES;
55 memset(map->map, 0, BITS_TO_LONGS(OCFS2_NODE_MAP_MAX_NODES) *
56 sizeof(unsigned long));
59 void ocfs2_init_node_maps(struct ocfs2_super *osb)
61 spin_lock_init(&osb->node_map_lock);
62 ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs);
65 void ocfs2_do_node_down(int node_num, void *data)
67 struct ocfs2_super *osb = data;
69 BUG_ON(osb->node_num == node_num);
71 mlog(0, "ocfs2: node down event for %d\n", node_num);
75 * No cluster connection means we're not even ready to
76 * participate yet. We check the slots after the cluster
77 * comes up, so we will notice the node death then. We
78 * can safely ignore it here.
83 ocfs2_recovery_thread(osb, node_num);
86 void ocfs2_stop_heartbeat(struct ocfs2_super *osb)
89 char *argv[5], *envp[3];
91 if (ocfs2_mount_local(osb))
95 /* This can happen if we don't get far enough in mount... */
96 mlog(0, "No UUID with which to stop heartbeat!\n\n");
100 argv[0] = (char *)o2nm_get_hb_ctl_path();
103 argv[3] = osb->uuid_str;
106 mlog(0, "Run: %s %s %s %s\n", argv[0], argv[1], argv[2], argv[3]);
108 /* minimal command environment taken from cpu_run_sbin_hotplug */
110 envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
113 ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC);
118 static inline void __ocfs2_node_map_set_bit(struct ocfs2_node_map *map,
121 set_bit(bit, map->map);
124 void ocfs2_node_map_set_bit(struct ocfs2_super *osb,
125 struct ocfs2_node_map *map,
130 BUG_ON(bit >= map->num_nodes);
131 spin_lock(&osb->node_map_lock);
132 __ocfs2_node_map_set_bit(map, bit);
133 spin_unlock(&osb->node_map_lock);
136 static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map,
139 clear_bit(bit, map->map);
142 void ocfs2_node_map_clear_bit(struct ocfs2_super *osb,
143 struct ocfs2_node_map *map,
148 BUG_ON(bit >= map->num_nodes);
149 spin_lock(&osb->node_map_lock);
150 __ocfs2_node_map_clear_bit(map, bit);
151 spin_unlock(&osb->node_map_lock);
154 int ocfs2_node_map_test_bit(struct ocfs2_super *osb,
155 struct ocfs2_node_map *map,
159 if (bit >= map->num_nodes) {
160 mlog(ML_ERROR, "bit=%d map->num_nodes=%d\n", bit, map->num_nodes);
163 spin_lock(&osb->node_map_lock);
164 ret = test_bit(bit, map->map);
165 spin_unlock(&osb->node_map_lock);