3.5.1 Matrix Server Administration Guide

Chapter 8: Configure MxFS-Linux 144

You can enter the DNS name or IP address for each Virtual NFS Service

directly on the dialog, or you can specify a range of virtual IP addresses to

be used for the Virtual NFS Services. To specify a range, click the button

“Automatically create range of VNFS addresses.” Then specify the range

on the dialog that appears next.

When you click OK, the IP addresses will be filled in on the “Create a

Spanning Set of Virtual NFS Services” dialog.

After specifying the DNS names or IP addresses for the Virtual NFS

Services, you can set the policy, which determines the failback action that

the Virtual NFS Services will take following a failover to a backup node.

The options are:

•

AUTOFAILBACK. This policy is intended to return the Virtual NFS

Service to its original configuration, or as close to it as possible, when

the primary node is returned to service. After the Virtual NFS Service

fails over to a backup node, Matrix Server watches the health of the

nodes that are higher in the list of servers configured for that Virtual

NFS Service. When the health of one of these nodes is equal to or greater

than the backup node where the Virtual NFS Service currently resides,

the Virtual NFS Service will automatically attempt to fail over to that

node.

•

NOFAILBACK. This policy is intended to minimize failovers. The

Virtual NFS Service remains active on the backup node, even after the

primary node is returned to service, until a “healthier” node becomes

available, at which point the Virtual NFS Service fails over to that

node. (On a “healthier” node, more of the services associated with the