Hi David,
I confirmed that this problem was solved with your patch.
Thanks.
(12.11.29 01:06), David Vossel wrote:
----- Original Message -----
From: "Kazunori INOUE" <inouek...@intellilink.co.jp>
To: "pacemaker@oss" <pacemaker@oss.clusterlabs.org>
Cc: shimaza...@intellilink.co.jp
Sent: Wednesday, November 28, 2012 2:54:56 AM
Subject: [Pacemaker] crm_mon -W crash
Hi,
I try to handle SNMP trap with crm_mon.
However, crm_mon crashes with SIGSEGV at the time of fencing.
[environment]
- Red Hat Enterprise Linux Server release 6.3 (Santiago)
- ClusterLabs/pacemaker 9c13d14640(Nov 27, 2012)
- corosync 92e0f9c7bb(Nov 07, 2012)
[root@dev1 ~]$ pacemakerd -F
Pacemaker 1.1.8 (Build: 9c13d14)
Supporting: generated-manpages agent-manpages ascii-docs
publican-docs ncurses libqb-logging libqb-ipc lha-fencing
corosync-native snmp
[root@dev1 ~]$ rpm -qi net-snmp-libs
Name : net-snmp-libs Relocations: (not
relocatable)
Version : 5.5 Vendor: Red Hat,
Inc.
Release : 41.el6 Build Date: Fri May 18
19:20:24 2012
Install Date: Mon Jul 2 14:15:53 2012 Build Host:
x86-003.build.bos.redhat.com
-snip-
[test case]
1. set only STONITH resources and perform crm_mon with -W option.
[root@dev1 ~]$ crm_mon -S 192.168.133.148 -W
Last updated: Wed Nov 28 11:44:46 2012
Last change: Wed Nov 28 11:44:35 2012 via cibadmin on dev1
Stack: corosync
Current DC: dev1 (2506467520) - partition with quorum
Version: 1.1.8-9c13d14
2 Nodes configured, unknown expected votes
2 Resources configured.
Online: [ dev1 dev2 ]
prmStonith1 (stonith:external/libvirt): Started dev2
prmStonith2 (stonith:external/libvirt): Started dev1
2. fence the dev2.
[root@dev1 ~]$ crm node fence dev2
Do you really want to shoot dev2? y
3. then, crm_mon crashed.
[root@dev1 ~]$ crm_mon -S 192.168.133.148 -W
Last updated: Wed Nov 28 11:45:32 2012
Last change: Wed Nov 28 11:44:35 2012 via cibadmin on dev1
Stack: corosync
Current DC: dev1 (2506467520) - partition WITHOUT quorum
Version: 1.1.8-9c13d14
2 Nodes configured, unknown expected votes
2 Resources configured.
Node dev2 (2472913088): UNCLEAN (offline)
Online: [ dev1 ]
prmStonith1 (stonith:external/libvirt): Started dev2
prmStonith2 (stonith:external/libvirt): Started dev1
Segmentation fault (core dumped)
[root@dev1 ~]$
GDB shows this:
[root@dev1 ~]$ gdb `which crm_mon` core.28326
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-56.el6)
-snip-
Core was generated by `crm_mon -S 192.168.133.148 -W'.
Program terminated with signal 11, Segmentation fault.
#0 0x0000003f808805a1 in __strlen_sse2 () from /lib64/libc.so.6
-snip-
(gdb) bt
#0 0x0000003f808805a1 in __strlen_sse2 () from /lib64/libc.so.6
#1 0x0000003f81c39481 in snmp_add_var () from
/usr/lib64/libnetsnmp.so.20
#2 0x00000000004099ba in send_snmp_trap (node=0x24408a0 "dev2",
rsc=0x0, task=0x245c850 "st_notify_fence", target_rc=0, rc=0,
status=0, desc=0x2462b80 "Operation st_notify_fence requested by
dev1 for peer dev2: OK
(ref=c520e07b-907f-48b9-a216-4786289b61da)") at crm_mon.c:1716
#3 0x000000000040af6b in mon_st_callback (st=0x2409520,
e=0x243aa30) at crm_mon.c:2241
#4 0x00007fc23639598d in stonith_send_notification
(data=0x2408390, user_data=0x7fff159e1410) at st_client.c:1960
#5 0x000000364263688c in g_list_foreach () from
/lib64/libglib-2.0.so.0
#6 0x00007fc236396638 in stonith_dispatch_internal
(buffer=0x2429a08 "<notify t=\"st_notify\"
subt=\"st_notify_fence\" st_op=\"st_notify_fence\"
st_rc=\"0\"><st_calldata><st_notify_fence state=\"2\" st_rc=\"0\"
st_target=\"dev2\" st_device_action=\"reboot\"
st_delegate=\"dev1\" st_remote"..., length=387,
userdata=0x2409520) at st_client.c:2128
#7 0x00007fc235d03391 in mainloop_gio_callback (gio=0x2433fe0,
condition=G_IO_IN, data=0x240a2e0) at mainloop.c:565
#8 0x0000003642638f0e in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#9 0x000000364263c938 in ?? () from /lib64/libglib-2.0.so.0
#10 0x000000364263cd55 in g_main_loop_run () from
/lib64/libglib-2.0.so.0
#11 0x0000000000404e23 in main (argc=4, argv=0x7fff159e1778) at
crm_mon.c:590
(gdb)
Looking at the back trace, this might fix it.
diff --git a/tools/crm_mon.c b/tools/crm_mon.c
index 2e2ca16..5c2e687 100644
--- a/tools/crm_mon.c
+++ b/tools/crm_mon.c
@@ -1713,7 +1713,9 @@ send_snmp_trap(const char *node, const char *rsc, const
char *task, int target_r
}
/* Add extries to the trap */
- add_snmp_field(trap_pdu, snmp_crm_oid_rsc, rsc);
+ if (rsc) {
+ add_snmp_field(trap_pdu, snmp_crm_oid_rsc, rsc);
+ }
add_snmp_field(trap_pdu, snmp_crm_oid_node, node);
add_snmp_field(trap_pdu, snmp_crm_oid_task, task);
add_snmp_field(trap_pdu, snmp_crm_oid_desc, desc);
Is this a known issue?
Best Regards,
Kazunori INOUE
_______________________________________________
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http://oss.clusterlabs.org/mailman/listinfo/pacemaker
Project Home: http://www.clusterlabs.org
Getting started:
http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org
_______________________________________________
Pacemaker mailing list: Pacemaker@oss.clusterlabs.org
http://oss.clusterlabs.org/mailman/listinfo/pacemaker
Project Home: http://www.clusterlabs.org
Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org
_______________________________________________
Pacemaker mailing list: Pacemaker@oss.clusterlabs.org
http://oss.clusterlabs.org/mailman/listinfo/pacemaker
Project Home: http://www.clusterlabs.org
Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org
