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.\" 26.\" $FreeBSD: src/usr.sbin/rpc.umntall/rpc.umntall.8,v 1.12 2005/02/13 22:25:32 ru Exp $ 27.\" 28.Dd November 17, 1999 29.Dt RPC.UMNTALL 8 30.Os 31.Sh NAME 32.Nm rpc.umntall 33.Nd notify NFS servers about unmounted NFS file systems 34.Sh SYNOPSIS 35.Nm 36.Op Fl e Ar expire 37.Op Fl h Ar host 38.Op Fl k 39.Op Fl p Ar remotepath 40.Op Fl v 41.Sh DESCRIPTION 42The 43.Nm 44utility is proposed in the 45.Tn NFS 46RPC specification; see 47.Rs 48.%T "NFS Version 3 Protocol Specification" 49.%O "RFC 1813, Appendix I" 50.Re 51It uses remote procedure calls to remove mount entries from 52.Pa /var/db/mountdtab 53on the remote NFS server. 54It is called automatically 55without any parameters during startup and shutdown of 56the system. 57This ensures that 58.Xr showmount 8 59does not display old and expired entries. 60The 61.Nm 62utility 63is only needed on client side, where 64.Xr mount_nfs 8 65adds a mount entry with the current date to 66.Pa /var/db/mounttab , 67and 68.Xr umount 8 69removes the entry again. 70The 71.Nm 72utility 73cares about all remaining entries in this table which result from crashes 74or unproper shutdowns. 75.Pp 76The options are as follows: 77.Bl -tag -width indentxxx 78.It Fl e Ar expire 79All entries which are not actually mounted or older than 80.Ar expire 81(seconds) are removed from 82.Pa /var/db/mounttab . 83This may be the case 84for DNS changes or long out of service periods. 85Default expire time 86is 86400 seconds (one day). 87.It Fl h Ar host 88Only remove the specific hostname. 89Send a UMNTALL RPC to the NFS server. 90.It Fl k 91Keep entries for existing NFS file systems. 92Compare the NFS file systems from 93the mounttab against the kernel mountlist and do not send the RPC to 94existing mount entries. 95Useful during startup of the system. 96It may be 97possible that there are already mounted NFS file systems, so calling 98RPC UMOUNT is not a good idea. 99This is the case if the user has rebooted 100to 'single user mode' and starts up the system again. 101.It Fl p Ar path 102Only remove the specific mount-path. 103Send a UMOUNT RPC to the NFS server. 104This option implies the 105.Fl host 106option. 107.It Fl v 108Verbose, additional information is printed for each processed mounttab 109entry. 110.El 111.Sh FILES 112.Bl -tag -width /var/db/mounttab -compact 113.It Pa /var/db/mounttab 114mounted nfs-file systems 115.El 116.Sh SEE ALSO 117.Xr mountd 8 , 118.Xr mount_nfs 8 , 119.Xr umount 8 120.Sh HISTORY 121The 122.Nm 123utility first appeared in 124.Fx 4.0 . 125.Sh AUTHORS 126.An Martin Blapp Aq Mt mb@imp.ch 127