Configuring for a single NFS environment
Use this configuration to export all the local directories from a single virtual IP address. In this configuration, the NFS resource is part of a failover service group and there is only one NFS related service group in the entire clustered environment. This configuration supports lock recovery and also handles potential NFS ACK storms. This configuration also supports NFSv4.
Creating the NFS exports service group
This service group contains the Share and IP resources for exports. The PathName attribute's value for the Share resource must be on shared storage and it must be visible to all nodes in the cluster.
To create the NFS exports service group
- Create an NFS resource inside the service group.
Note: |
You must set NFSLockFailover to 1 for NFSRestart resource if you intend to use NFSv4. |
- If you configure the backing store for the NFS exports using VxVM, create DiskGroup and Mount resources for the mount point that you want to export.
If you configure the backing store for the NFS exports using LVM, configure the LVMVolumeGroup resource and Mount resource for the mount point that you want to export.
Refer to Storage agents chapter in the Cluster Server Bundled Agents Reference Guide for details.
- Create an NFSRestart resource. Set the Lower attribute of this NFSRestart resource to 1. Ensure that NFSRes attribute points to the NFS resource that is on the system.
For NFS lock recovery, make sure that the NFSLockFailover attribute and the LocksPathName attribute have appropriate values. The NFSRestart resource depends on the Mount and NFS resources that you have configured for this service group.
Note: |
The NFSRestart resource gets rid of preonline and postoffline triggers for NFS. |
- Create a Share resource. Set the PathName to the mount point that you want to export. In case of multiple shares, create multiple Share resources with different values for their PathName attributes. All the Share resources configured in the service group should have dependency on the NFSRestart resource with a value of 1 for the Lower attribute.
- Create an IP resource. The value of the Address attribute for this IP resource is used to mount the NFS exports on the client systems. Make the IP resource depend on the Share resources that are configured in the service group.
- Create a DNS resource if you want NFS lock recovery. The DNS resource depends on the IP resource. Refer to the sample configuration on how to configure the DNS resource.
- Create an NFSRestart resource. Set the NFSRes attribute to the NFS resource (nfs) that is configured on the system. Set the Lower attribute of this NFSRestart resource to 0. Make the NFSRestart resource depend on the IP resource or the DNS resource (if you want to use NFS lock recovery.)
Note: |
Ensure that all attributes except the Lower attribute are identical for the two NFSRestart resources. |
