HP StorageWorks XP Cluster Extension Software Administrator Guide (T1656-96035, April 2010)

This is a general VCS engine log file, which gives an overview of all cluster-related activities and
whether they were successful or unsuccessful.
• VCS 1.3.0 or later:
/var/VRTSvcs/log/ClusterExtensionXP_A.log
• VCS 1.1.2:
/var/VRTSvcs/log/ClusterExtensionXP.log_A
This XP Cluster Extension agent log file of VCS shows agent-related error information. The XP Cluster
Extension log file is named clxvcs.log.
Start errors
VCS will fail the resource and disable the service group on the local system if it the clxpcf file is
not present. If the program is in a very early state of processing, this operation might fail, and XP
Cluster Extension will not show the service group in the error message. However, VCS will fail the
resource.
Failover errors
XP Cluster Extension's integration with VCS disables service groups on the local system if a configuration
error occurs. In this case, XP Cluster Extension will return a local error.
The service group is disabled in the data center if the XP disk array status indicates the problem
experienced locally cannot be solved on another system connected to the same XP disk array. All
systems specified in the DC_A_Hosts object or DC_B_Hosts object are disabled to bring the service
group online.
This could be also the case if the ApplicationStartup object has been set to FASTFAILBACK.
If an XP disk array state has been discovered (which does not allow bringing the service group online
on any system in the cluster), a cluster error is reported and all systems are disabled to bring the
service group online. Such state could be a SMLP state on both primary and secondary disks, a
suspended (PSUS/SSUS) state on either site, or a state mismatch in the device group for this service
group. None of the scenarios allows automatic recovery because XP Cluster Extension cannot determine
which copy of the data is the most current. In these cases, a storage or cluster administrator must
investigate what happened to the environment.
CAUTION:
HP does not recommend that you enable the service group again and try to bring the prior failed
service group online without investigating the problem. When a failed XP Cluster Extension resource
occurs, check the status of the XP disk pair on each copy, and decide whether it is safe to continue.
Examples
Figure 12 on page 156 and Figure 13 on page 156 show examples of an incompatible XP disk pair
state shown in the VCS Cluster Manager Log Desk window.
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