Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Chapter 3, Administering Dynamic Multipathing (DMP)
Administering DMP Using vxdmpadm
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The interval attribute specifies how often the restore daemon examines the paths. For
example, after stopping the restore daemon, the polling interval can be set to 400 seconds
using the following command:
# vxdmpadm start restore interval=400
Note The default interval is 300 seconds. Decreasing this interval can adversely affect
system performance.
To change the interval or policy, you must first stop the restore daemon, and then
restart it with new attributes.
See the vxdmpadm(1M) manual page for more information about DMP restore policies.
Stopping the DMP Restore Daemon
Use the following command to stop the DMP restore daemon:
# vxdmpadm stop restore
Note Automatic path failback stops if the restore daemon is stopped.
Displaying the Status of the DMP Restore Daemon
Use the following command to display the status of the automatic path restoration
daemon, its polling interval, and the policy that it uses to check the condition of paths:
# vxdmpadm stat restored
This produces output such as the following:
The number of daemons running : 1
The interval of daemon: 300
The policy of daemon: check_disabled
Displaying Information About the DMP Error Daemons
To display the number of error daemons that are running, use the following command:
# vxdmpadm stat errord