VERITAS Volume Manager 3.1 Administrator's Guide

Cluster Functionality
Cluster-related Volume Manager Utilities and Daemons
Chapter 7318
Cluster-related Volume Manager Utilities and
Daemons
The following utilities and/or daemons have been created or modified for
use with the Volume Manager in a cluster environment:
• “vxclustd Daemon”
• “vxconfigd Daemon”
• “vxdctl Utility”
• “vxdg Utility”
• “vxdisk Utility”
• “vxdmpadm Utility”
• “vxrecover Utility”
• “vxstat Utility”
The following sections contain information about how each of these
utilities is used in a cluster environment. For further details on any of
these utilities, see their manual pages.
NOTE Most Volume Manager commands require superuser privileges.
vxclustd Daemon
The vxclustd daemon is the Volume Manager cluster reconfiguration
daemon. The vxclustd daemon provides communication between the
cluster manager and VxVM and initiates cluster reconfigurations. Every
node currently in the cluster runs an instance of the vxclustd daemon.
Whenever cluster membership changes, the cluster manager notifies the
vxclustd daemon, which then initiates a reconfiguration within VxVM.
The vxclustd daemon is started up by the cluster manager when the
node initially attempts to join the cluster. The vxclustd daemon first
registers with the cluster manager and obtains the following information
from the cluster manager: