Signed-off-by: Chuck Lever <[email protected]>
---
utils/mount/nfs.man | 106 +++++++++++++++++++++++++++------------------------
1 files changed, 57 insertions(+), 49 deletions(-)
diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man
index 6af39bd..06bd3be 100644
--- a/utils/mount/nfs.man
+++ b/utils/mount/nfs.man
@@ -11,60 +11,68 @@ file systems
.SH SYNOPSIS
.I /etc/fstab
.SH DESCRIPTION
-The
-.I fstab
-file contains information about which filesystems
-to mount where and with what options.
-For NFS mounts, it contains the server name and
-exported server directory to mount from,
-the local directory that is the mount point,
-and the NFS specific options that control
-the way the filesystem is mounted.
+NFS is an Internet Standard protocol
+invented by Sun Microsystems in the 1980s
+to share files between systems residing
+on a local area network.
+The Linux NFS client supports three versions
+of the NFS protocol:
+NFS version 2 [RFC1094],
+NFS version 3 [RFC1813],
+and NFS version 4 [RFC3530].
.P
-Three different versions of the NFS protocol are
-supported by the Linux NFS client:
-NFS version 2, NFS version 3, and NFS version 4.
-To mount via NFS version 2, use the
-.BR nfs
-file system type and specify
-.BR nfsvers=2 .
-To mount via NFS version 3, use the
-.BR nfs
-file system type and specify
-.BR nfsvers=3 .
-Version 3 is the default protocol version for the
-.BR nfs
-file system type when
-.BR nfsvers=
-is not specified on the mount command and both client and server
-support it.
-To mount via NFS version 4, use the
-.BR nfs4
-file system type.
The
-.BR nfsvers=
-keyword is not supported for the
-.BR nfs4
-file system type.
+.BR mount (8)
+command attaches a file system to the system's
+name space hierarchy at a given mount point.
+The
+.I /etc/fstab
+file describes how
+.BR mount (8)
+should assemble a system's file name hierarchy
+from various independent file systems,
+including remote NFS shares.
+Each line in the
+.I /etc/fstab
+file describes a single file system, its mount point,
+and a set of default mount options for that mount point.
.P
-These file system types share similar mount options;
-the differences are listed below.
+For NFS file system mounts, a line in the
+.I /etc/fstab
+file specifies the server name,
+the path name of the exported server directory to mount,
+the local directory that is the mount point,
+the type of file system that is being mounted,
+and a list of mount options that control
+the way the filesystem is mounted and
+how the NFS client behaves when accessing
+files on this mount point.
+The fifth and sixth fields on each line are not used
+by NFS, thus conventionally each contain the digit zero.
.P
-Here is an example from an \fI/etc/fstab\fP file for an NFSv3 mount
-over TCP.
-.sp
-.nf
-.ta 2.5i +0.75i +0.75i +1.0i
-server:/usr/local/pub /pub nfs rsize=32768,wsize=32768,timeo=14,intr
-.fi
+.SP
+.NF
+.TA 2.5i +0.75i +0.75i +1.0i
+server:path /mountpoint fstype option,option,... 0 0
+.FI
.P
-Here is an example for an NFSv4 mount over TCP using Kerberos
-5 mutual authentication.
-.sp
-.nf
-.ta 2.5i +0.75i +0.75i +1.0i
-server:/usr/local/pub /pub nfs4 proto=tcp,sec=krb5,hard,intr
-.fi
+The server's hostname and the export pathname
+are separated by a colon,
+the mount options are separated by commas,
+and the remaining fields are separated by blanks or tabs.
+The server's hostname can be an unqualified hostname,
+a fully qualified domain name,
+or a dotted quad IPv4 address.
+The
+.I fstype
+field contains either "nfs" for version 2 or version 3 NFS mounts,
+or "nfs4" for NFS version 4 mounts.
+The
+.B nfs
+and
+.B nfs4
+file system types share similar mount options,
+which are described below.
.DT
.SS Options for the nfs file system type
.TP 1.5i
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