115 lines
3.6 KiB
Groff
115 lines
3.6 KiB
Groff
.\"
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.\" Copyright (c) 1999 Martin Blapp
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd November 17, 1999
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.Dt RPC.UMNTALL 8
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.Os
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.Sh NAME
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.Nm rpc.umntall
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.Nd notify NFS servers about unmounted NFS filesystems
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.Sh SYNOPSIS
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.Nm rpc.umntall
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.Op Fl e Ar expire
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.Op Fl h Ar host
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.Op Fl k
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.Op Fl p Ar remotepath
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.Op Fl v
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.Sh DESCRIPTION
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.Nm
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is as command as proposed in the
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.Tn NFS
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RPC specification; see
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.Rs
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.%T "NFS Version 3 Protocol Specification"
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.%O "RFC 1813, Appendix I"
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.Re
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It uses remote procedure calls to remove mount entries from
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.Pa /var/db/mountdtab
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on the remote NFS server. It is called automatically
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without any parameters during startup and shutdown of
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the system. This ensures that
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.Xr showmount 8
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does not display old and expired entries. The
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.Nm
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command
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is only needed on client side, where
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.Xr mount_nfs 8
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adds a mount entry with the current date to
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.Pa /var/db/mounttab ,
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and
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.Xr umount 8
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removes the entry again. The
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.Nm
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command
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cares about all remaining entries in this table which result from crashes
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or unproper shutdowns.
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.Pp
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The options are as follows:
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.Bl -tag -width indentxxx
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.It Fl e Ar expire
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All entries which are not actually mounted or older than
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.Ar expire
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(seconds) are removed from
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.Pa /var/db/mounttab .
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This may be the case
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for DNS changes or long out of service periods. Default expire time
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is 172800 seconds (2 days).
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.It Fl h Ar host
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Only remove the specific hostname. Send a UMNTALL RPC to the NFS server.
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.It Fl k
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Keep entries for existing NFS filesystems. Compare the NFS filesystems from
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the mounttab against the kernel mountlist and do not send the RPC to
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existing mount entries. Useful during startup of the system. It may be
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possible that there are already mounted NFS filesystems, so calling
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RPC UMOUNT isn't a good idea. This is the case if the user has rebooted
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to 'single user mode' and starts up the system again.
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.It Fl p Ar path
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Only remove the specific mount-path. Send a UMOUNT RPC to the NFS server.
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This option implies the
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.Fl host
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option.
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.It Fl v
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Verbose, additional information is printed for each processed mounttab
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entry.
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.El
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.Sh FILES
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.Bl -tag -width /var/db/mounttab -compact
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.It Pa /var/db/mounttab
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mounted nfs-filesystems
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.El
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Fx 4.0 .
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.Sh SEE ALSO
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.Xr mount_nfs 8 ,
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.Xr mountd 8 ,
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.Xr umount 8
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.Sh AUTHORS
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.An Martin Blapp Aq mb@imp.ch
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