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author | Sunil Mushran <sunil.mushran@oracle.com> | 2010-10-07 14:31:06 -0700 |
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committer | Sunil Mushran <sunil.mushran@oracle.com> | 2010-10-07 14:31:06 -0700 |
commit | b3c85c4cdf77154acc940dd0f14d1fb99cbbaf75 (patch) | |
tree | c88f7d311ba46650691768dffc90362db9129338 /fs/ocfs2/cluster | |
parent | b1365d0bd14b912cceb424cbeed9fe939a9038e3 (diff) | |
download | op-kernel-dev-b3c85c4cdf77154acc940dd0f14d1fb99cbbaf75.zip op-kernel-dev-b3c85c4cdf77154acc940dd0f14d1fb99cbbaf75.tar.gz |
ocfs2/cluster: Get all heartbeat regions
Export function in o2hb to get a list of heartbeat regions. It also adds an
upper limit to the length of the heartbeat region name.
o2hb_global_heartbeat_active() currently disables global heartbeat. It will
be enabled in a later patch after all the code is added.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Diffstat (limited to 'fs/ocfs2/cluster')
-rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 34 | ||||
-rw-r--r-- | fs/ocfs2/cluster/heartbeat.h | 4 |
2 files changed, 38 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 4d36459..3415e58 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -1623,6 +1623,9 @@ static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *g if (reg == NULL) return ERR_PTR(-ENOMEM); + if (strlen(name) > O2HB_MAX_REGION_NAME_LEN) + return ERR_PTR(-ENAMETOOLONG); + config_item_init_type_name(®->hr_item, name, &o2hb_region_type); spin_lock(&o2hb_live_lock); @@ -2035,3 +2038,34 @@ void o2hb_stop_all_regions(void) spin_unlock(&o2hb_live_lock); } EXPORT_SYMBOL_GPL(o2hb_stop_all_regions); + +int o2hb_get_all_regions(char *region_uuids, u8 max_regions) +{ + struct o2hb_region *reg; + int numregs = 0; + char *p; + + spin_lock(&o2hb_live_lock); + + p = region_uuids; + list_for_each_entry(reg, &o2hb_all_regions, hr_all_item) { + mlog(0, "Region: %s\n", config_item_name(®->hr_item)); + if (numregs < max_regions) { + memcpy(p, config_item_name(®->hr_item), + O2HB_MAX_REGION_NAME_LEN); + p += O2HB_MAX_REGION_NAME_LEN; + } + numregs++; + } + + spin_unlock(&o2hb_live_lock); + + return numregs; +} +EXPORT_SYMBOL_GPL(o2hb_get_all_regions); + +int o2hb_global_heartbeat_active(void) +{ + return 0; +} +EXPORT_SYMBOL(o2hb_global_heartbeat_active); diff --git a/fs/ocfs2/cluster/heartbeat.h b/fs/ocfs2/cluster/heartbeat.h index 2f16492..00ad8e8 100644 --- a/fs/ocfs2/cluster/heartbeat.h +++ b/fs/ocfs2/cluster/heartbeat.h @@ -31,6 +31,8 @@ #define O2HB_REGION_TIMEOUT_MS 2000 +#define O2HB_MAX_REGION_NAME_LEN 32 + /* number of changes to be seen as live */ #define O2HB_LIVE_THRESHOLD 2 /* number of equal samples to be seen as dead */ @@ -81,5 +83,7 @@ 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); +int o2hb_get_all_regions(char *region_uuids, u8 numregions); +int o2hb_global_heartbeat_active(void); #endif /* O2CLUSTER_HEARTBEAT_H */ |