3.7.0 HP StorageWorks HP Scalable NAS File Serving Software administration guide - HP Scalable NAS 3.7 for Linux (AG513-96002, October 2009)

that can move between nodes, clients are again exposed to spurious error returns.
The virtualized NFSD RPC reply cache feature allows the state of the NFSD RPC reply
cache to be associated with the relevant virtualized NFS server (vhost) and transferred
together with the virtualized NFS server.
NOTE:
This feature is enabled by default on HP 4400 Scalable NAS systems.
The mxfsreplycachebasename command can be used to enable or disable
virtualized NFSD RPC reply caches.
To enable virtualized NFSD RPC reply caches, take the following steps:
1. Create a directory for the reply cache. HP recommends that the directory be
placed in the administrative filesystem (for example, _adminfs/protocols/
nfs_1/reply_cache). The administrative filesystem must be created manually
and must be mounted on all nodes. For more information, see “Create the
administrative filesystem” on page 139.
2. Enable the virtualized NFSD RPC reply cache feature, specifying the directory
that you created as the path:
/opt/hpcfs/bin/mxfsreplycachebasename --set <path>
mxfsreplycachebasename affects the entire cluster, is persistent, and takes
effect immediately.
To disable the feature, use this command:
/opt/hpcfs/bin/mxfsreplycachebasename --disable
Use the following command to show the current status of the virtualized NFSD reply
caches in the cluster (either enabled or disabled). If the feature is enabled, the
directory that will contain the cache files is also displayed.
/opt/hpcfs/bin/mxfsreplycachebasename --query
Network recommendations
To improve NFS performance, HP recommends that the network be configured as
follows:
• Use Gigabit Ethernet.
Configure FS Option for Linux198