Overview
This article shows which OS versions support NFSv4. NFSv4 is enabled by default, but the target/staging hosts require additional configuration changes before it can be used.
Redhat/SLES: "NFSv4 Only - Enabling Recover Lost Locks" section under Linux/Redhat/CentOs.
AIX: IBM AIX article.
| OS version | NSFv4 support |
|---|---|
| RHEL 6.3 or later | Supported |
| SLES 11.4 or later | Supported |
| AIX 7.1, 7.2 | Supported |
If these target host configurations are not set, the engine will choose NFSv3. The provided reason (e.g., "OS not supported") that is shown for choosing NFSv3 over NFSv4 can be observed under the Status tab of the selected VDB in the Delphix Engine GUI. Additional information is provided in this tab for datasets and current values.
Dataset Status Tab NFS Reasons
| NFS Reason | Notes |
|---|---|
| Default | NFSv4 is used by default. |
| Old RedHat | NFSv3 is used for versions of RedHat older than 6.3. |
| Unsupported OS | NFSv3 is used for HP-UX and Solaris. |
| DNFS | dNFS is in use and does not support NFSv4. |
| Tunable Override | The nfs.version tunable is set to force NFSv3. |
| Configuration Override | Appears with default operation, implies that a configuration parameter has changed. |
| No Recover Lost Locks | The required Linux NFS client 'recover_lost_locks' setting is not enabled. |
| Unsupported Data Platform | NFSv3 is used with AppData. |
| Incomplete v4 Config | nfsrgyd daemon is not running or reverse DNS lookup is missing. |