Hi Junxiao,
If tcp connections take a long time to establish, and hr_unsteady_iterations
still may change to 0, then o2hb thread will exit by error.
What about wait the connection?
--- a/fs/ocfs2/cluster/heartbeat.c 2016-03-29 20:22:03.066400592 +0800
+++ a/fs/ocfs2/cluster/heartbeat.c 2016-03-29 20:20:55.494065519 +0800
@@ -1054,7 +1054,7 @@ bail:
}
if (atomic_read(®->hr_steady_iterations) != 0) {
- if (atomic_dec_and_test(®->hr_unsteady_iterations)) {
+ if (!membership_change &&
atomic_dec_and_test(®->hr_unsteady_iterations)) {
printk(KERN_NOTICE "o2hb: Unable to stabilize "
"heartbeart on region %s (%s)\n",
config_item_name(®->hr_item),
Thanks
Changkuo
发件人: [email protected]
[mailto:[email protected]] 代表 Junxiao Bi
发送时间: 2015年11月19日 16:08
收件人: [email protected]
抄送: [email protected]
主题: [Ocfs2-devel] [PATCH] o2hb: increase unsteady iterations
When run multiple xattr test of ocfs2-test on a three-nodes cluster, mount
failed sometimes with the following message.
o2hb: Unable to stabilize heartbeart on region D18B775E758D4D80837E8CF3D086AD4A
(xvdb)
Stabilize heartbeat depends on the timing order to mount ocfs2 from cluster
nodes and how fast the tcp connections are established. So increase unsteady
interations to leave more time for it.
Signed-off-by: Junxiao Bi <[email protected]>
---
fs/ocfs2/cluster/heartbeat.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index
709fbbd..a3cc6d2 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -1780,8 +1780,8 @@ static ssize_t o2hb_region_dev_store(struct config_item
*item,
}
++live_threshold;
atomic_set(®->hr_steady_iterations, live_threshold);
- /* unsteady_iterations is double the steady_iterations */
- atomic_set(®->hr_unsteady_iterations, (live_threshold << 1));
+ /* unsteady_iterations is triple the steady_iterations */
+ atomic_set(®->hr_unsteady_iterations, (live_threshold * 3));
hb_task = kthread_run(o2hb_thread, reg, "o2hb-%s",
reg->hr_item.ci_name);
--
1.7.9.5
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