NFS Mount Options

Beyond mounting a le system via NFS on a remote host, a number of different options may be
specied at the time of the mount that can make it easier to use. These options can be used with
manual mount commands, /etc/fstab settings, and autofs, and other mounting methods.
The following options are the most popular for NFS mounts:
. hard or soft . species whether the program using a le via an NFS connection should stop
and wait (hard) for the server to come back online if the host serving the exported le system is
unavailable, or if it should report an error (soft).
If you specify hard, you will not be able to terminate the process waiting for the NFS communication
to resume unless you also specify the intr option.
If you specify soft, you can set an additional timeo=
option, where
the number of seconds to pass before the error is reported.
. intr. allows NFS requests to be interrupted if the server goes down or cannot be reached.
. nolock . is occasionally required when connecting to older NFS server. To require locking, use
the lock option.
. noexec . does not permit the execution of binaries on the mounted le system. This is useful if
your Red Hat Linux system is mounting a non-Linux le system via NFS that contains binaries that
will not execute on your machine.
. nosuid. does not allow set-user-identier or set-group-identier bits to take effect.
. rsize=8192 and wsize=8192.may speed up NFS communication for reads (rsize) and writes
(wsize) by setting a larger data block size, in bytes, to be transferred at one time. Be careful when
changing these values; some older Linux kernels and network cards may not work well with larger
block sizes.
. nfsvers=2 or nfsvers=3. specify which version of the NFS protocol to use.
Many more options are listed on the mount man page, including options for mounting non-NFS le

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