This is the mail archive of the
cluster-cvs@sourceware.org
mailing list for the cluster.
Cluster Project branch, RHEL5, updated. cmirror_1_1_15-7-gb70ad6f
- From: teigland at sourceware dot org
- To: cluster-cvs at sources dot redhat dot com, cluster-devel at redhat dot com
- Date: 11 Mar 2008 17:20:52 -0000
- Subject: Cluster Project branch, RHEL5, updated. cmirror_1_1_15-7-gb70ad6f
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "Cluster Project".
http://sources.redhat.com/git/gitweb.cgi?p=cluster.git;a=commitdiff;h=b70ad6fe5a5795a699ad208ab009a4c952e9078f
The branch, RHEL5 has been updated
via b70ad6fe5a5795a699ad208ab009a4c952e9078f (commit)
from d5e690aa185be4fcaa411f82016c59921a729e5e (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
commit b70ad6fe5a5795a699ad208ab009a4c952e9078f
Author: David Teigland <teigland@redhat.com>
Date: Tue Mar 11 12:18:23 2008 -0500
groupd: purge messages from dead nodes
bz 436984
In the fix for bug 258121, 70294dd8b717de89f2d168c0837c011648908558,
we began taking nodedown events via the groupd cpg, instead of via the per
group cpg. Messages still come in via the per group cpg. I believe that
that opened the possibility of processing a message from a node after
processing the nodedown for it.
In Nate's revolver test, we saw it happen; revolver killed nodes 1,2,3,
leaving just node 4:
1205198713 0:default confchg left 3 joined 0 total 1
1205198713 0:default confchg removed node 1 reason 3
1205198713 0:default confchg removed node 2 reason 3
1205198713 0:default confchg removed node 3 reason 3
...
1205198713 0:default mark_node_started: event not starting 12 from 2
-----------------------------------------------------------------------
Summary of changes:
group/daemon/app.c | 25 +++++++++++++++++++++++++
group/daemon/cpg.c | 1 +
group/daemon/gd_internal.h | 1 +
3 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/group/daemon/app.c b/group/daemon/app.c
index db5f88b..df17896 100644
--- a/group/daemon/app.c
+++ b/group/daemon/app.c
@@ -702,6 +702,31 @@ int queue_app_message(group_t *g, struct save_msg *save)
return 0;
}
+/* This is called when we get the nodedown for the per-group cpg; we know
+ that after the cpg nodedown we won't get any further messages. bz 436984
+ It's conceivable but unlikely that the nodedown processing (initiated by
+ the groupd cpg nodedown) could begin before the per-group cpg nodedown
+ is received where this purging occurs. If it does, then we may need to
+ add code to wait for the nodedown to happen in both the groupd cpg and the
+ per-group cpg before processing the nodedown. */
+
+void purge_node_messages(group_t *g, int nodeid)
+{
+ struct save_msg *save, *tmp;
+
+ list_for_each_entry_safe(save, tmp, &g->messages, list) {
+ if (save->nodeid != nodeid)
+ continue;
+
+ log_group(g, "purge msg from dead node %d", nodeid);
+
+ list_del(&save->list);
+ if (save->msg_long)
+ free(save->msg_long);
+ free(save);
+ }
+}
+
static void del_app_nodes(app_t *a)
{
node_t *node, *tmp;
diff --git a/group/daemon/cpg.c b/group/daemon/cpg.c
index edd593f..d5cfb8d 100644
--- a/group/daemon/cpg.c
+++ b/group/daemon/cpg.c
@@ -413,6 +413,7 @@ void process_confchg(void)
case CPG_REASON_NODEDOWN:
case CPG_REASON_PROCDOWN:
/* process_node_down(g, saved_left[i].nodeid); */
+ purge_node_messages(g, saved_left[i].nodeid);
break;
default:
log_error(g, "unknown leave reason %d node %d",
diff --git a/group/daemon/gd_internal.h b/group/daemon/gd_internal.h
index 9c0026c..691d187 100644
--- a/group/daemon/gd_internal.h
+++ b/group/daemon/gd_internal.h
@@ -263,6 +263,7 @@ void groupd_down(int nodeid);
char *msg_type(int type);
int process_app(group_t *g);
int is_our_join(event_t *ev);
+void purge_node_messages(group_t *g, int nodeid);
/* main.c */
void app_stop(app_t *a);
hooks/post-receive
--
Cluster Project