Merge branch 'vendor/SENDMAIL'
[dragonfly.git] / usr.sbin / rpc.umntall / rpc.umntall.8
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1.\"
2.\" Copyright (c) 1999 Martin Blapp
3.\" All rights reserved.
4.\"
5.\" Redistribution and use in source and binary forms, with or without
6.\" modification, are permitted provided that the following conditions
7.\" are met:
8.\" 1. Redistributions of source code must retain the above copyright
9.\" notice, this list of conditions and the following disclaimer.
10.\" 2. Redistributions in binary form must reproduce the above copyright
11.\" notice, this list of conditions and the following disclaimer in the
12.\" documentation and/or other materials provided with the distribution.
13.\"
14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24.\" SUCH DAMAGE.
25.\"
ce0e08e2 26.\" $FreeBSD: src/usr.sbin/rpc.umntall/rpc.umntall.8,v 1.12 2005/02/13 22:25:32 ru Exp $
7b5c7f28 27.\" $DragonFly: src/usr.sbin/rpc.umntall/rpc.umntall.8,v 1.6 2008/11/26 15:27:24 swildner Exp $
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28.\"
29.Dd November 17, 1999
30.Dt RPC.UMNTALL 8
31.Os
32.Sh NAME
33.Nm rpc.umntall
34.Nd notify NFS servers about unmounted NFS file systems
35.Sh SYNOPSIS
36.Nm
37.Op Fl e Ar expire
38.Op Fl h Ar host
39.Op Fl k
40.Op Fl p Ar remotepath
41.Op Fl v
42.Sh DESCRIPTION
43The
44.Nm
45utility is proposed in the
46.Tn NFS
47RPC specification; see
48.Rs
49.%T "NFS Version 3 Protocol Specification"
50.%O "RFC 1813, Appendix I"
51.Re
52It uses remote procedure calls to remove mount entries from
53.Pa /var/db/mountdtab
54on the remote NFS server.
55It is called automatically
56without any parameters during startup and shutdown of
57the system.
58This ensures that
59.Xr showmount 8
60does not display old and expired entries.
61The
62.Nm
63utility
64is only needed on client side, where
65.Xr mount_nfs 8
66adds a mount entry with the current date to
67.Pa /var/db/mounttab ,
68and
69.Xr umount 8
70removes the entry again.
71The
72.Nm
73utility
74cares about all remaining entries in this table which result from crashes
75or unproper shutdowns.
76.Pp
77The options are as follows:
78.Bl -tag -width indentxxx
79.It Fl e Ar expire
80All entries which are not actually mounted or older than
81.Ar expire
82(seconds) are removed from
83.Pa /var/db/mounttab .
84This may be the case
85for DNS changes or long out of service periods.
86Default expire time
87is 86400 seconds (one day).
88.It Fl h Ar host
89Only remove the specific hostname.
90Send a UMNTALL RPC to the NFS server.
91.It Fl k
92Keep entries for existing NFS file systems.
93Compare the NFS file systems from
94the mounttab against the kernel mountlist and do not send the RPC to
95existing mount entries.
96Useful during startup of the system.
97It may be
98possible that there are already mounted NFS file systems, so calling
ce0e08e2 99RPC UMOUNT is not a good idea.
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100This is the case if the user has rebooted
101to 'single user mode' and starts up the system again.
102.It Fl p Ar path
103Only remove the specific mount-path.
104Send a UMOUNT RPC to the NFS server.
105This option implies the
106.Fl host
107option.
108.It Fl v
109Verbose, additional information is printed for each processed mounttab
110entry.
111.El
112.Sh FILES
113.Bl -tag -width /var/db/mounttab -compact
114.It Pa /var/db/mounttab
115mounted nfs-file systems
116.El
49781055
SW
117.Sh SEE ALSO
118.Xr mountd 8 ,
119.Xr mount_nfs 8 ,
120.Xr umount 8
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121.Sh HISTORY
122The
123.Nm
124utility first appeared in
125.Fx 4.0 .
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126.Sh AUTHORS
127.An Martin Blapp Aq mb@imp.ch