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 1.6.2.3 2003/03/11 22:31:32 trhodes Exp $ 27.\" $DragonFly: src/usr.sbin/rpc.umntall/rpc.umntall.8,v 1.3 2003/11/09 07:11:02 dillon Exp $ 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.Op Fl f 43.Sh DESCRIPTION 44The 45.Nm 46utility is proposed in the 47.Tn NFS 48RPC specification; see 49.Rs 50.%T "NFS Version 3 Protocol Specification" 51.%O "RFC 1813, Appendix I" 52.Re 53It uses remote procedure calls to remove mount entries from 54.Pa /var/db/mountdtab 55on the remote NFS server. 56It is called automatically 57without any parameters during startup and shutdown of 58the system. 59This ensures that 60.Xr showmount 8 61does not display old and expired entries. 62The 63.Nm 64utility 65is only needed on client side, where 66.Xr mount_nfs 8 67adds a mount entry with the current date to 68.Pa /var/db/mounttab , 69and 70.Xr umount 8 71removes the entry again. 72The 73.Nm 74utility 75cares about all remaining entries in this table which result from crashes 76or unproper shutdowns. 77.Pp 78The options are as follows: 79.Bl -tag -width indentxxx 80.It Fl e Ar expire 81All entries which are not actually mounted or older than 82.Ar expire 83(seconds) are removed from 84.Pa /var/db/mounttab . 85This may be the case 86for DNS changes or long out of service periods. 87Default expire time 88is 86400 seconds (one day). 89.It Fl h Ar host 90Only remove the specific hostname. 91Send a UMNTALL RPC to the NFS server. 92.It Fl k 93Keep entries for existing NFS file systems. 94Compare the NFS file systems from 95the mounttab against the kernel mountlist and do not send the RPC to 96existing mount entries. 97Useful during startup of the system. 98It may be 99possible that there are already mounted NFS file systems, so calling 100RPC UMOUNT isn't a good idea. 101This is the case if the user has rebooted 102to 'single user mode' and starts up the system again. 103.It Fl p Ar path 104Only remove the specific mount-path. 105Send a UMOUNT RPC to the NFS server. 106This option implies the 107.Fl host 108option. 109.It Fl v 110Verbose, additional information is printed for each processed mounttab 111entry. 112.It Fl f 113Fast mode. The resolver timeout is reduced to 4 seconds and the 114pmap_getport() timeout is reduced from 60 seconds to 3. This option 115is used when 116.Nm 117is used in the boot sequence to facilitate booting. 118.El 119.Sh FILES 120.Bl -tag -width /var/db/mounttab -compact 121.It Pa /var/db/mounttab 122mounted nfs-file systems 123.El 124.Sh HISTORY 125The 126.Nm 127utility first appeared in 128.Fx 4.0 . 129.Sh SEE ALSO 130.Xr mountd 8 , 131.Xr mount_nfs 8 , 132.Xr umount 8 133.Sh AUTHORS 134.An Martin Blapp Aq mb@imp.ch 135