HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 Command-Line Interface reference manual (AG421-96004, March 2007)

166 4 - CONFIGURATION-MODE COMMANDS
NFS file system objects have owners and permissions and the NFS optimizer conforms
to the file system permissions model by enforcing file server and volume policies. You
must ensure that the policy is set correctly to Read-Only or Global Read-Write as
appropriate. Setting the policy to Read-Only on a non read-only file system results in
Read-Only file system (ROFS) errors.
Syntax [no] protocol nfs default volume {policy [custom | global_rw | home_dir] |root-
squash <cr>}
Parameters
Example
minna (config) # protocol nfs default volume root-squash
minna (config) #
protocol nfs enable
Enables the NFS optimizer. The NFS optimizer provides latency optimization
improvements for NFS operations primarily by prefetching data, storing it on the client
HP EFS WAN Accelerator for a short amount of time, and using it to respond to client
requests.
The no command option disables the NFS optimizer.
NFS file system objects have owners and permissions and the NFS optimizer conforms
to the file system permissions model by enforcing file server and volume policies. You
must ensure that the policy is set correctly to Read-Only or Global Read-Write as
appropriate. Setting the policy to Read-Only on a non read-only file system results in
Read-Only file system (ROFS) errors.
Syntax [no] protocol nfs enable
Parameters None
Example
minna (config) # protocol nfs enable
minna (config) #
policy [custom | global_rw | home_dir] Specifies one of the following policies:
• Custom. Enables you to turn on or off the root
squash feature for NFS volumes from this
server.
• Global Read-Write. Specifies a policy that
provides a trade-off of performance for data
consistency. All of the data can be accessed
from any client, including LAN based NFS
clients (which do not go through the HP EFS
WAN Accelerators) and clients using other
file protocols like CIFS. This option severely
restricts the optimizations that can be applied
without introducing consistency problems.
This is the default configuration.
• Home Directory. Specifies all accesses to
each directory are by a single user. This policy
allows aggressive caching of data and
metadata.
root-squash <cr> Enables root squashing.