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

Start errors
Start errors can occur when the path to the XP RAID Manager binaries has not been set in the PATH
environment variable. If a user configuration file is not found in the correct directory location, XP
Cluster Extension returns a local error.
A start error occurs if the APPLICATION name tag value in the XP Cluster Extension resource
configuration file does not match the service name (RHCS) or the App value of XP Cluster Extension
resource (SLE HA).
XP Cluster Extension returns a local error if it does not find the XP Cluster Extension resource
configuration file for in the correct directory location (RHCS and SLE HA).
Failover error handling
XP Cluster Extension automatically fails over application services if the system the application service
is running on becomes unavailable. This also means that if a problem with the XP disk array state
occurs, an application service startup process will be stopped. The behavior of XP Cluster Extension
is highly configurable.
Depending on the customer setting, XP Cluster Extension is used to prevent application services from
starting automatically under the wrong conditions. Therefore, XP Cluster Extension will return local,
data center-wide, or even cluster-wide errors to prevent accidental access to the XP disk array disk
set.
XP Cluster Extension provides the following error return codes for failover operations:
Prohibits an application service startup on the local system. This can be
caused by the inability of XP Cluster Extension to enable disk access, or
misconfiguration of the disk array environment.
local error
Prohibits an application service startup on any system in the local data
center. This error is returned if the disk state indicates that it makes no
sense to allow any other system connected to the same disk array to ac-
cess the disks.
data center error
A global error is returned if the configuration or the disk state does not
allow an automatic application service startup process. In such cases,
manual intervention is required.
global error
When XP Cluster Extension is integrated, an error message string and integer value are displayed.
For the CLI, a return code is displayed. For more information, see “CLI commands” on page 113.
HACMP-specific error handling
XP Cluster Extension related messages are logged by HACMP to the following locations:
• /usr/adm/cluster.log
This is the general HACMP log file, which gives an overview of all events processed and whether
they were successful or unsuccessful.
• /tmp/hacmp.out
This is a detailed HACMP log file containing process logs of all event scripts. The output of XP
Cluster Extension can also be found in this file.
Troubleshooting150