<html><body><p><font size="4">Hi folks, </font><br><br><font size="4">I'm running some test scenarios with an ocf_heartbeat_iscsi pacemaker resource, </font><br><font size="4">using the following XIV multipath'ed configuration: </font><br><br><font size="4">I created a single XIV iscsi host definition containing all the pacemaker host (cluster node) 'Initiator's:</font><br><br><font size="4">XIV 7812475>>host_list_ports host=pacemaker_iscsi</font><br><font size="4">Host Type Port Name </font><br><font size="4">pacemaker_iscsi iSCSI iqn.2005-03.org.open-iscsi:6539c3daf095 </font><br><font size="4">pacemaker_iscsi iSCSI iqn.2005-03.org.open-iscsi:11d639c0976c </font><br><font size="4">pacemaker_iscsi iSCSI iqn.1994-05.com.redhat:74ca24d6476 </font><br><font size="4">pacemaker_iscsi iSCSI iqn.1994-05.com.redhat:ea17bebd09a </font><br><font size="4">pacemaker_iscsi iSCSI iqn.1994-05.com.redhat:b852a67852c </font><br><br><font size="4">Here is the XIV Target IP:port / IQN info:</font><br><br><font size="4">10.20.92.108:3260 </font><br><font size="4">Target: iqn.2005-10.com.xivstorage:012475 </font><br><br><font size="4">10.20.92.109:3260</font><br><font size="4">Target: iqn.2005-10.com.xivstorage:012475 </font><br><br><font size="4">I mapped a single 17Gb Lun to the XIV host: 20017380030BB110F</font><br><br><br><font size="4">From ocf_heartbeat_iscsi man page, it didn't seem obvious to me how I might specify multiple</font><br><font size="4">IP Portals (i.e. both the .108 and .109 IPs) to a single ocf_heartbeat_iscsi resource. So, </font><br><font size="4">I went ahead and configured my resource using just the .108 IP path, as follows:</font><br><br><font size="4">Using the above XIV definitions, I created a single iscsi pacemaker resource using only one of the two IP</font><br><font size="4">paths to the XIV LUN: </font><br><br><font size="4">[root@zs95kj VD]# pcs resource show iscsi_r4</font><br><br><font size="4"> Resource: iscsi_r4 (class=ocf provider=heartbeat type=iscsi)</font><br><font size="4"> Attributes: portal=10.20.92.108:3260 target=iqn.2005-10.com.xivstorage:012475</font><br><font size="4"> Operations: start interval=0s timeout=120 (iscsi_r4-start-interval-0s)</font><br><font size="4"> stop interval=0s timeout=120 (iscsi_r4-stop-interval-0s)</font><br><font size="4"> monitor interval=120 timeout=30 (iscsi_r4-monitor-interval-120)</font><br><br><font size="4">I'm looking for suggestions as to how I should configure my iscsi resource(s) such that I have both paths (.108 and .109)</font><br><font size="4">to the LUN available to my application? Do I need to create a second iscsi resource for the .109 path, and colocate</font><br><font size="4">them so that they move about the cluster together? </font><br><br><font size="4">As an aside, I have run into situations where the second IP (.109) comes online to where my iscsi_r4 resource is running (how or why,</font><br><font size="4">I'm not sure), which introduces problems because iscsi_r4 only manages the .108 connection. </font><br><br><font size="4">Thanks in advance... </font><br><br>Scott Greenlese ... KVM on System Z - Solutions Test, IBM Poughkeepsie, N.Y.<br> INTERNET: swgreenl@us.ibm.com <br> <br><BR>
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