Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Troubleshooting Your Cluster
Solving Problems
Chapter 8346
control script cannot be trusted to perform cleanup actions correctly, thus
the script is terminated and the package administrator is given the
opportunity to assess what cleanup steps must be taken.
If you want the package to switch automatically in the event of a control
script timeout, set the NODE_FAIL_FAST_ENABLED parameter to YES. (If
you are using Serviceguard Manager, set Package Failfast to
Enabled.) In this case, Serviceguard will cause a TOC on the node where
the control script timed out. This effectively cleans up any side effects of
the package's run or halt attempt. In this case the package will be
automatically restarted on any available alternate node for which it is
configured.
Problems with VxVM Disk Groups
This section describes some approaches to solving problems that may
occur with VxVM disk groups in a cluster environment. For most
problems, it is helpful to use the vxdg list command to display the disk
groups currently imported on a specific node. Also, you should consult
the package control script log files for messages associated with
importing and deporting disk groups on particular nodes.
Force Import and Deport After Node Failure
After certain failures, packages configured with VxVM disk groups will
fail to start, and the following error will be seen in the package log file:
vxdg: Error dg_01 may still be imported on ftsys9
ERROR: Function check_dg failed
This can happen if a package is running on a node which then fails
before the package control script can deport the disk group. In these
cases, the host name of the node that had failed is still written on the
disk group header.
When the package starts up on another node in the cluster, a series of
messages is printed as in the following example (the hostname of the
failed system is ftsys9, and the disk group is dg_01):
check_dg: Error dg_01 may still be imported on ftsys9
To correct this situation, logon to ftsys9 and
execute the following command:
vxdg deport dg_01