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