449287a2a5
Used extensively on my network over the past month. Reviewed by: pfg, brooks Suggested by: pfg Obtained from: ftp://ftp.am-utils.org/pub/am-utils/ MFC after: 6 weeks Relnotes: yes Differential Revision: D8405
217 lines
6.0 KiB
Groff
217 lines
6.0 KiB
Groff
.\"
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.\" Copyright (c) 1997-2014 Erez Zadok
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.\" Copyright (c) 1990 Jan-Simon Pendry
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.\" Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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.\" Copyright (c) 1990 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Jan-Simon Pendry at Imperial College, London.
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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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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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.\"
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.\" File: am-utils/fixmount/fixmount.8
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.\" $FreeBSD$
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.\"
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.Dd February 26, 2016
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.Dt FIXMOUNT 8
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.Os
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.Sh NAME
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.Nm fixmount
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.Nd fix remote mount entries
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.Sh SYNOPSIS
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.Nm
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.Op Fl adervq
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.Op Fl h Ar name
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.Ar host ...
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.Sh DESCRIPTION
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.Bf -symbolic
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This command is obsolete.
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Users are advised to use
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.Xr autofs 5
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instead.
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.Ef
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.Pp
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The
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.Nm
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utility
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is a variant of
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.Xr showmount 8
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that can delete bogus mount entries in remote
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.Xr mountd 8
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daemons.
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The actions specified by the options are performed for each
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.Ar host
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in turn.
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.Sh OPTIONS
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.Bl -tag -width indent
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.It Fl a , d , e
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These options work as in
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.Xr showmount 8
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except that only entries pertaining to the local host are printed.
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.It Fl r
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Removes those remote mount entries on
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.Ar host
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that do not correspond to current mounts, i.e., which are left-over
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from a crash or are the result of improper mount protocol.
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The actuality of mounts is verified using the entries in
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.Pa /etc/mtab .
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.It Fl v
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Verify remote mounts.
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Similar to
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.Fl r
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except that only a notification message is printed for each bogus entry
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found.
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The remote mount table is not changed.
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.It Fl A
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Issues a command to the remote mountd declaring that
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.Em all
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of its file systems have been unmounted.
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This should be used with caution, as it removes all
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remote mount entries pertaining to the local system, whether or not any
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file systems are still mounted locally.
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.It Fl q
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Be quiet.
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Suppresses error messages due to timeouts and
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.Dq Li "Program not registered" ,
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i.e., due to remote hosts not supporting RPC or not running
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.Xr mountd 8 .
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.It Fl h Ar name
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Pretend the local hostname is
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.Ar name .
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This is useful after the local hostname has been changed and rmtab entries
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using the old name remain on a remote machine.
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Unfortunately, most mountd's will not be able to successfully handle removal
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of such entries, so this option is useful in combination with
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.Fl v
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only.
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.Pp
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This option also saves time as comparisons of remotely recorded and local
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hostnames by address are avoided.
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.El
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.Sh FILES
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.Bl -tag -width ".Pa /etc/rmtab"
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.It Pa /etc/mtab
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List of current mounts.
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.It Pa /etc/rmtab
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Backup file for remote mount entries on
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.Tn NFS
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server.
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.El
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.Sh SEE ALSO
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.Xr mtab 5 ,
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.Xr rmtab 5 ,
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.Xr mountd 8 ,
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.Xr showmount 8
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.Pp
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.Dq am-utils
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.Xr info 1
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entry.
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.Rs
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.%A Erez Zadok
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.%B "Linux NFS and Automounter Administration"
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.%O ISBN 0-7821-2739-8
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.%I Sybex
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.%D 2001
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.Re
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.Pp
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.Pa http://www.am-utils.org/
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.Rs
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.%T Amd \- The 4.4 BSD Automounter
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.Re
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.Sh HISTORY
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The
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.Nm
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utility appeared in
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.Fx 3.0 .
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.Sh AUTHORS
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.An Jan-Simon Pendry Aq jsp@doc.ic.ac.uk ,
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Department of Computing, Imperial College, London, UK.
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.Pp
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.An Erez Zadok Aq ezk@cs.columbia.edu ,
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Department of Computer Science, Columbia University, New York, USA.
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.Pp
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.An Other authors and contributors to
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.Nm am-utils
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are listed in the
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.Pa AUTHORS
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file distributed with
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.Nm am-utils .
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.Sh AUTHORS
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.An Andreas Stolcke Aq stolcke@icsi.berkeley.edu
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.Pp
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.An Erez Zadok Aq ezk@cs.sunysb.edu ,
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Computer Science Department, Stony Brook University, Stony Brook, New York, USA.
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.Pp
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Other authors and contributors to am-utils are listed in the
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.Pa AUTHORS
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file distributed with am-utils.
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.Sh BUGS
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No attempt is made to verify the information in
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.Pa /etc/mtab
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itself.
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.Pp
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Since swap file mounts are not recorded in
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.Pa /etc/mtab ,
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a heuristic specific to SunOS is used to determine whether such a mount
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is actual (replacing the string
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.Dq Li swap
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with
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.Dq Li root
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and verifying the resulting path).
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.Pp
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Symbolic links on the server will cause the path in the remote entry to differ
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from the one in
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.Pa /etc/mtab .
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To catch those cases, a file system is also deemed mounted if its
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.Em local
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mount point is identical to the remote entry.
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I.e., on a SunOS diskless client,
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.Pa server:/export/share/sunos.4.1.1
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is actually
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.Pa /usr/share .
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Since the local mount point is
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.Pa /usr/share
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as well this will be handled correctly.
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.Pp
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There is no way to clear a stale entry in a remote
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.Xr mountd 8
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after the
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local hostname (or whatever reverse name resolution returns for it)
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has been changed.
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To take care of these cases,
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the remote
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.Pa /etc/rmtab
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file has to be edited and
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.Xr mountd 8
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restarted.
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.Pp
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The RPC timeouts for
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.Xr mountd 8
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calls can only be changed by recompiling.
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The defaults are 2 seconds for client handle creation and 5 seconds for
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RPC calls.
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