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@ -1,4 +1,4 @@
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.\" $NetBSD: mount_nfs.8,v 1.33 2006/12/27 11:08:30 yamt Exp $
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.\" $NetBSD: mount_nfs.8,v 1.34 2006/12/27 11:27:37 wiz Exp $
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.\"
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.\" Copyright (c) 1992, 1993, 1994, 1995
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.\" The Regents of the University of California. All rights reserved.
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@ -38,30 +38,30 @@
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.Sh SYNOPSIS
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.Nm
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.Bk -words
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.Op Fl 23bcCdilpPqsTUX
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.Op Fl 23bCcdilPpqsTUX
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.Ek
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.Bk -words
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.Op Fl a Ar maxreadahead
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.Ek
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.Bk -words
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.Op Fl D Ar deadthresh
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.Ek
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.Bk -words
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.Op Fl g Ar maxgroups
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.Ek
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.Bk -words
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.Op Fl I Ar readdirsize
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.Ek
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.Bk -words
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.Op Fl L Ar leaseterm
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.Ek
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.Bk -words
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.Op Fl R Ar retrycnt
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.Ek
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.Bk -words
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.Op Fl a Ar maxreadahead
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.Ek
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.Bk -words
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.Op Fl g Ar maxgroups
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.Ek
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.Bk -words
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.Op Fl o Ar options
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.Ek
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.Bk -words
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.Op Fl R Ar retrycnt
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.Ek
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.Bk -words
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.Op Fl r Ar readsize
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.Ek
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.Bk -words
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@ -105,61 +105,6 @@ Use the
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Version 3 protocol.
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The default is to try version 3 first, and
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fall back to version 2 if the mount fails.
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.It Fl D
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Set the
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.Dq "dead server threshold"
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to the specified number of round trip timeout intervals.
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After a
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.Dq "dead server threshold"
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of retransmit timeouts,
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.Dq "not responding"
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message is printed to a tty.
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.It Fl I
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Set the readdir read size to the specified value.
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The value should normally
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be a multiple of
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.Dv DIRBLKSIZ
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that is \*[Le] the read size for the mount.
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.It Fl L
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Ignored.
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It used to be
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.Tn NQNFS
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lease term.
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.It Fl P
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Use a reserved socket port number.
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This is the default, and available
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for backwards compatibility purposes only.
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.It Fl R
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Set the retry count for doing the mount to the specified value.
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.It Fl T
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Use
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.Tn TCP
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transport instead of
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.Tn UDP .
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This is recommended for servers that are not on the same physical network as
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the client.
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Not all
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.Tn NFS
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servers, especially not old ones, support this.
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.It Fl U
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Force the mount protocol to use
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.Tn UDP
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transport, even for
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.Tn TCP
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.Tn NFS
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mounts.
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This is necessary for some old
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.Bx
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servers.
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.It Fl X
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Perform 32 \*[Lt]-\*[Gt] 64 bit directory cookie translation for version 3 mounts.
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This may be need in the case of a server using the upper 32 bits of
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version 3 directory cookies, and when you are running emulated binaries
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that access such a filesystem.
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Native
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.Nx
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binaries will never need this option.
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This option introduces some overhead.
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.It Fl a
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Set the read-ahead count to the specified value.
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This may be in the range of 0 - 4, and determines how many blocks
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@ -172,14 +117,6 @@ trying the mount in the background.
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Useful for
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.Xr fstab 5 ,
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where the filesystem mount is not critical to multiuser operation.
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.It Fl c
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For
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.Tn UDP
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mount points, do not do a
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.Xr connect 2 .
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This flag is deprecated and connectionless
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.Tn UDP
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mounts are the default.
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.It Fl C
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For
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.Tn UDP
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@ -195,6 +132,23 @@ port number 2049, or for servers with multiple network interfaces.
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In these cases if the socket is connected and the server
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replies from a different port number or a different network interface
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the client will get ICMP port unreachable and the mount will hang.
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.It Fl c
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For
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.Tn UDP
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mount points, do not do a
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.Xr connect 2 .
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This flag is deprecated and connectionless
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.Tn UDP
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mounts are the default.
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.It Fl D
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Set the
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.Dq "dead server threshold"
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to the specified number of round trip timeout intervals.
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After a
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.Dq "dead server threshold"
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of retransmit timeouts,
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.Dq "not responding"
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message is printed to a tty.
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.It Fl d
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Turn off the dynamic retransmit timeout estimator.
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This may be useful for
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@ -209,12 +163,23 @@ This should be used for mounts on old servers that cannot handle a
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group list size of 16, as specified in RFC 1057.
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Try 8, if users in a lot of groups cannot get response from the mount
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point.
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.It Fl I
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Set the readdir read size to the specified value.
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The value should normally
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be a multiple of
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.Dv DIRBLKSIZ
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that is \*[Le] the read size for the mount.
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.It Fl i
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Make the mount interruptible, which implies that file system calls that
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are delayed due to an unresponsive server will fail with
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.Er EINTR
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when a
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termination signal is posted for the process.
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.It Fl L
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Ignored.
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It used to be
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.Tn NQNFS
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lease term.
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.It Fl l
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Used with
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.Tn NFS
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@ -237,6 +202,10 @@ flag followed by a comma separated string of options.
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See the
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.Xr mount 8
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man page for possible options and their meanings.
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.It Fl P
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Use a reserved socket port number.
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This is the default, and available
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for backwards compatibility purposes only.
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.It Fl p
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Do not use a reserved port number for RPCs.
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This option is provided only to be able to mimic the old
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@ -246,6 +215,8 @@ A synonym of
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.Fl 3 .
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It used to specify
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.Tn NQNFS .
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.It Fl R
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Set the retry count for doing the mount to the specified value.
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.It Fl r
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Set the read data size to the specified value in bytes.
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It should normally be a power of 2 greater than or equal to 1024.
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@ -271,6 +242,16 @@ A soft mount, which implies that file system calls will fail
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after
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.Ar retrycnt
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round trip timeout intervals.
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.It Fl T
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Use
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.Tn TCP
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transport instead of
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.Tn UDP .
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This is recommended for servers that are not on the same physical network as
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the client.
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Not all
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.Tn NFS
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servers, especially not old ones, support this.
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.It Fl t
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Set the initial retransmit timeout to the specified value.
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May be useful for fine tuning
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@ -284,6 +265,16 @@ value if there is a low retransmit rate but long response delay observed.
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Normally, the -d option should be specified when using this option to manually
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tune the timeout
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interval.
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.It Fl U
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Force the mount protocol to use
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.Tn UDP
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transport, even for
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.Tn TCP
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.Tn NFS
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mounts.
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This is necessary for some old
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.Bx
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servers.
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.It Fl w
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Set the write data size to the specified value in bytes.
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.Pp
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@ -303,6 +294,15 @@ options should only be used as a last ditch effort at improving performance
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when mounting servers that do not support
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.Tn TCP
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mounts.
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.It Fl X
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Perform 32 \*[Lt]-\*[Gt] 64 bit directory cookie translation for version 3 mounts.
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This may be need in the case of a server using the upper 32 bits of
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version 3 directory cookies, and when you are running emulated binaries
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that access such a filesystem.
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Native
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.Nx
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binaries will never need this option.
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This option introduces some overhead.
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.It Fl x
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Set the retransmit timeout count for soft mounts to the specified value.
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.El
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