[Linux-cluster] Failover not happening when SAN connectivity failed

Kukkala Prasad kprasad at cordys.com
Fri Feb 5 04:40:14 UTC 2010

Hi Charles,

Here is the configuration details.

<?xml version="1.0"?>
<cluster alias="mysqlha" config_version="80" name="mysqlha">
        <fence_daemon post_fail_delay="0" post_join_delay="3"/>
                <clusternode name="srv-int-rs4.ourdomain.com" nodeid="1" votes="1">
                                <method name="1">
                                        <device name="vb4-rs4"/>
                <clusternode name="srv-int-rs5.ourdomain.com" nodeid="2" votes="1">
                                <method name="1">
                                        <device name="vb2-rs5"/>
                <clusternode name="srv-int-rs6.ourdomain.com" nodeid="3" votes="1">
                                <method name="1">
                                        <device name="perf10-rs6"/>
                <fencedevice agent="fence_ilo" hostname="ilo-int-vb4" login="admin" name="vb4-rs4" passwd="*****"/>
                <fencedevice agent="fence_ilo" hostname="ilo-int-vb2" login="admin" name="vb2-rs5" passwd="*****"/>
                <fencedevice agent="fence_ilo" hostname="ilo-int-perf10" login="admin" name="perf10-rs6" passwd="*****"/>
                        <failoverdomain name="faiodom1" ordered="0" restricted="1">
                                <failoverdomainnode name="srv-int-rs4.ourdomain.com" priority="1"/>
                                <failoverdomainnode name="srv-int-rs5.ourdomain.com" priority="1"/>
                        <lvm lv_name="SANLogVol01" name="SAN Volume" vg_name="SANVolGroup01"/>
                        <fs device="/dev/SANVolGroup01/SANLogVol01" force_fsck="0" force_unmount="0" fsid="4190" fstype="ext3" mountpoint="/mysqldb" name="sanvolume" options="" self_fence="0"/>
                        <ip address="" monitor_link="1"/>
                        <mysql config_file="/etc/my.cnf" listen_address="" mysql_options="" name="mysql" shutdown_wait="5"/>
                <service autostart="1" domain="faiodom1" name="mysql-service" recovery="relocate">
                        <lvm ref="SAN Volume"/>
                        <fs ref="sanvolume"/>
                        <ip ref=""/>
                        <mysql ref="mysql"/>


-----Original Message-----
From: linux-cluster-bounces at redhat.com [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Charles Riley
Sent: Thursday, February 04, 2010 8:59 PM
To: linux clustering
Subject: Re: [Linux-cluster] Failover not happening when SAN connectivity failed

<Null pointer error>
(you don't really expect someone to help you with no information regarding your configuration, do you?)


Charles Riley
eRAD, Inc.

----- Original Message -----
From: "Kukkala Prasad" <kprasad at cordys.com>
To: linux-cluster at redhat.com
Sent: Thursday, February 4, 2010 5:42:35 AM GMT -05:00 US/Canada Eastern
Subject: [Linux-cluster] Failover not happening when SAN connectivity failed

Hi All, 

We have a cluster setup with Redhat Cluster Suite on RHEL5 OS. 

SAN is one of the resource configured in the cluster. 

We observed that if the SAN connectivity is lost on a given node then resources are not getting failovered to second node. How to resolve this problem? 



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