3.1.2 MxFS-Linux Administration Guide

Chapter 2: Configure Export Groups 19

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, after a

failover 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

Virtual NFS Service will be up than on the node currently hosting the

Virtual NFS Service.)

When you click OK on the “Create a Spanning Set of Virtual NFS

Services” dialog, you will return to the Add Export Group dialog. Then

click Apply or OK to create the Export Group, or configure the advanced

options as described under “Advanced Options for Export Groups” on