VERITAS Volume Manager 4.1 Administrator's Guide

Administering Cluster Functionality
Administering VxVM in Cluster Environments
Chapter 10380
Upgrading the Cluster Protocol Version
NOTE The cluster protocol version can only be updated on the master node.
After all the nodes in the cluster have been updated with a new cluster
protocol, you can upgrade the entire cluster using the following
command on the master node:
# vxdctl upgrade
Recovering Volumes in Shared Disk Groups
NOTE Volumes can only be recovered on the master node.
The vxrecover utility is used to recover plexes and volumes after disk
replacement. When a node leaves a cluster, it can leave some mirrors in
an inconsistent state. The vxrecover utility can be used to recover such
volumes. The -c option to vxrecover causes it to recover all volumes in
shared disk groups. The vxconfigd daemon automatically calls the
vxrecover utility with the -c option when necessary.
NOTE While the vxrecover utility is active, there can be some degradation in
system performance.
Obtaining Cluster Performance Statistics
The vxstat utility returns statistics for specified objects. In a cluster
environment, vxstat gathers statistics from all of the nodes in the
cluster. The statistics give the total usage, by all nodes, for the requested
objects. If a local object is specified, its local usage is returned.
You can optionally specify a subset of nodes using the following form of
the command:
# vxstat -g diskgroup -n node[,node...]