1994-05-26 06:35:07 +00:00
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.\" Copyright (c) 1980, 1991, 1993
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.\" Regents of the University of California.
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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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.\" 3. All advertising materials mentioning features or use of this software
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1998-06-15 06:58:13 +00:00
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.\" must display the following acknowledgment:
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1994-05-26 06:35:07 +00:00
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. 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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1997-03-11 12:09:50 +00:00
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.\" @(#)dump.8 8.3 (Berkeley) 5/1/95
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1999-08-28 00:22:10 +00:00
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.\" $FreeBSD$
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1994-05-26 06:35:07 +00:00
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.\"
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2002-03-01 20:54:23 +00:00
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.Dd March 1, 2002
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1994-05-26 06:35:07 +00:00
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.Dt DUMP 8
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2001-07-10 11:04:34 +00:00
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.Os
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1994-05-26 06:35:07 +00:00
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.Sh NAME
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2000-01-10 12:18:10 +00:00
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.Nm dump ,
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.Nm rdump
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2002-08-21 18:11:48 +00:00
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.Nd file system backup
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1994-05-26 06:35:07 +00:00
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.Sh SYNOPSIS
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2000-11-20 16:52:27 +00:00
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.Nm
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2002-12-03 18:21:09 +00:00
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.Op Fl 0123456789ackLnSu
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1997-03-11 12:09:50 +00:00
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.Op Fl B Ar records
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.Op Fl b Ar blocksize
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2003-01-13 19:42:41 +00:00
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.Op Fl C Ar cachesize
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2003-02-23 01:50:07 +00:00
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.Op Fl D Ar dumpdates
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1997-03-11 12:09:50 +00:00
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.Op Fl d Ar density
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.Op Fl f Ar file
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.Op Fl h Ar level
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.Op Fl s Ar feet
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.Op Fl T Ar date
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2002-08-26 18:16:39 +00:00
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.Ar filesystem
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2000-11-20 16:52:27 +00:00
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.Nm
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2002-04-17 02:10:33 +00:00
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.Fl W | Fl w
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.Pp
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.Nm rdump
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is an alternate name for
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.Nm .
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1997-03-11 12:09:50 +00:00
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.Pp
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2000-12-18 15:16:24 +00:00
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.in \" XXX
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1997-03-11 12:09:50 +00:00
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(The
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.Bx 4.3
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option syntax is implemented for backward compatibility, but
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is not documented here.)
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1994-05-26 06:35:07 +00:00
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.Sh DESCRIPTION
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2002-07-06 19:34:18 +00:00
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The
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.Nm
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utility examines files
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2002-08-21 18:11:48 +00:00
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on a file system
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1994-05-26 06:35:07 +00:00
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and determines which files
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2000-03-01 11:27:47 +00:00
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need to be backed up.
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These files
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1994-05-26 06:35:07 +00:00
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are copied to the given disk, tape or other
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storage medium for safe keeping (see the
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1997-03-11 12:09:50 +00:00
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.Fl f
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1994-05-26 06:35:07 +00:00
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option below for doing remote backups).
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A dump that is larger than the output medium is broken into
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multiple volumes.
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On most media the size is determined by writing until an
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2003-02-23 01:50:07 +00:00
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end-of-media indication is returned.
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This can be enforced
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1997-02-01 23:44:19 +00:00
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by using the
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1997-03-15 06:23:57 +00:00
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.Fl a
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1997-02-01 23:44:19 +00:00
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option.
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.Pp
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1994-05-26 06:35:07 +00:00
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On media that cannot reliably return an end-of-media indication
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(such as some cartridge tape drives)
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each volume is of a fixed size;
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the actual size is determined by the tape size and density and/or
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2002-04-17 02:10:33 +00:00
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.Fl B
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options.
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1994-05-26 06:35:07 +00:00
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By default, the same output file name is used for each volume
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after prompting the operator to change media.
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.Pp
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2002-08-21 18:11:48 +00:00
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The file system to be dumped is specified by the argument
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2002-08-27 00:49:27 +00:00
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.Ar filesystem
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2002-04-17 02:10:33 +00:00
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as either its device-special file or its mount point
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2002-05-29 16:19:26 +00:00
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(if that is in a standard entry in
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.Pa /etc/fstab ) .
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2002-04-17 02:10:33 +00:00
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.Pp
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1994-05-26 06:35:07 +00:00
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The following options are supported by
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2000-11-20 16:52:27 +00:00
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.Nm :
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1997-03-11 12:09:50 +00:00
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.Bl -tag -width Ds
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2003-02-23 01:50:07 +00:00
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.It Fl 0-9
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1994-05-26 06:35:07 +00:00
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Dump levels.
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A level 0, full backup,
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2002-08-21 18:11:48 +00:00
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guarantees the entire file system is copied
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1994-05-26 06:35:07 +00:00
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(but see also the
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1997-03-11 12:09:50 +00:00
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.Fl h
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1994-05-26 06:35:07 +00:00
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option below).
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A level number above 0,
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incremental backup,
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tells dump to
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copy all files new or modified since the
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1997-10-19 09:43:08 +00:00
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last dump of any lower level.
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1998-01-03 20:26:15 +00:00
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The default level is 0.
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1997-03-11 12:09:50 +00:00
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.It Fl a
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1997-02-01 23:44:19 +00:00
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.Dq auto-size .
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Bypass all tape length considerations, and enforce writing
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2003-02-23 01:50:07 +00:00
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until an end-of-media indication is returned.
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This fits best for most modern tape drives.
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Use of this option is particularly
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1997-02-01 23:44:19 +00:00
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recommended when appending to an existing tape, or using a tape
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drive with hardware compression (where you can never be sure about
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the compression ratio).
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2001-07-15 14:00:19 +00:00
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.It Fl B Ar records
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2002-04-17 02:10:33 +00:00
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The number of kilobytes per output volume, except that if it is
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not an integer multiple of the output block size,
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the command uses the next smaller such multiple.
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2001-07-15 14:00:19 +00:00
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This option overrides the calculation of tape size
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based on length and density.
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1997-03-11 12:09:50 +00:00
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.It Fl b Ar blocksize
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2002-04-17 02:10:33 +00:00
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The number of kilobytes per output block, except that if it is
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2003-02-23 01:50:07 +00:00
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larger than 64, the command uses 64.
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(See the
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.Sx BUGS
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section.)
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2002-04-17 02:10:33 +00:00
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The default block size is 10.
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2003-02-23 01:50:07 +00:00
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.It Fl C Ar cachesize
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Specify the cache size in megabytes.
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This will greatly improve performance
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at the cost of
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.Nm
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possibly not noticing changes in the file system between passes.
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It is
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recommended that you always use this option when dumping a snapshot.
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Beware that
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.Nm
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forks, and the actual memory use may be larger than the specified cache
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size.
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The recommended cache size is between 8 and 32 (megabytes).
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1997-03-11 12:09:50 +00:00
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.It Fl c
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1997-02-01 23:44:19 +00:00
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Change the defaults for use with a cartridge tape drive, with a density
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of 8000 bpi, and a length of 1700 feet.
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2001-07-09 03:06:56 +00:00
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.It Fl D Ar dumpdates
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2001-07-10 09:34:55 +00:00
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Specify an alternate path to the
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.Pa dumpdates
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file.
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2001-07-09 03:06:56 +00:00
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The default is
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.Pa /etc/dumpdates .
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1997-03-11 12:09:50 +00:00
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.It Fl d Ar density
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Set tape density to
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.Ar density .
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The default is 1600BPI.
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.It Fl f Ar file
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1994-05-26 06:35:07 +00:00
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Write the backup to
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.Ar file ;
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.Ar file
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may be a special device file
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like
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2001-03-09 13:06:53 +00:00
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.Pa /dev/sa0
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1994-05-26 06:35:07 +00:00
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(a tape drive),
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2000-05-07 09:27:53 +00:00
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.Pa /dev/fd1
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1995-11-18 18:00:43 +00:00
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(a floppy disk drive),
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1994-05-26 06:35:07 +00:00
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an ordinary file,
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or
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2002-12-23 16:04:51 +00:00
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.Sq Fl
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1994-05-26 06:35:07 +00:00
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(the standard output).
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Multiple file names may be given as a single argument separated by commas.
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Each file will be used for one dump volume in the order listed;
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if the dump requires more volumes than the number of names given,
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the last file name will used for all remaining volumes after prompting
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for media changes.
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If the name of the file is of the form
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.Dq host:file ,
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or
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.Dq user@host:file ,
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1998-06-15 06:58:13 +00:00
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.Nm
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1994-05-26 06:35:07 +00:00
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writes to the named file on the remote host using
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.Xr rmt 8 .
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1995-11-18 18:00:43 +00:00
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The default path name of the remote
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.Xr rmt 8
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program is
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1996-12-29 11:48:45 +00:00
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.\" rmt path, is the path on the remote host
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.Pa /etc/rmt ;
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1995-11-18 18:00:43 +00:00
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this can be overridden by the environment variable
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.Ev RMT .
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2001-07-15 14:00:19 +00:00
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.It Fl h Ar level
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Honor the user
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.Dq nodump
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flag
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.Pq Dv UF_NODUMP
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only for dumps at or above the given
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.Ar level .
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The default honor level is 1,
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so that incremental backups omit such files
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but full backups retain them.
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2002-12-03 18:21:09 +00:00
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.It Fl L
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This option is to notify
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.Nm
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2002-12-12 17:26:04 +00:00
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that it is dumping a live file system.
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2002-12-03 18:21:09 +00:00
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To obtain a consistent dump image,
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.Nm
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2002-12-12 17:26:04 +00:00
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takes a snapshot of the file system and
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2002-12-03 18:21:09 +00:00
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then does a dump of the snapshot.
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The snapshot is removed when the dump is complete.
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1997-03-11 12:09:50 +00:00
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.It Fl n
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1994-05-26 06:35:07 +00:00
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Whenever
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1998-06-15 06:58:13 +00:00
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.Nm
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1994-05-26 06:35:07 +00:00
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requires operator attention,
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notify all operators in the group
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.Dq operator
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by means similar to a
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.Xr wall 1 .
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2003-02-23 01:50:07 +00:00
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.It Fl S
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Display an estimate of the backup size and the number of
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tapes required, and exit without actually performing the dump.
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1997-03-11 12:09:50 +00:00
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.It Fl s Ar feet
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1994-05-26 06:35:07 +00:00
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Attempt to calculate the amount of tape needed
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at a particular density.
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If this amount is exceeded,
|
1998-06-15 06:58:13 +00:00
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.Nm
|
1994-05-26 06:35:07 +00:00
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prompts for a new tape.
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It is recommended to be a bit conservative on this option.
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The default tape length is 2300 feet.
|
1997-03-11 12:09:50 +00:00
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.It Fl T Ar date
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Use the specified date as the starting time for the dump
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instead of the time determined from looking in
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2001-07-10 09:34:55 +00:00
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the
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.Pa dumpdates
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file.
|
1997-03-11 12:09:50 +00:00
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The format of date is the same as that of
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.Xr ctime 3 .
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This option is useful for automated dump scripts that wish to
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dump over a specific period of time.
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The
|
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.Fl T
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option is mutually exclusive from the
|
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.Fl u
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option.
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.It Fl u
|
2001-07-10 09:34:55 +00:00
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Update the
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.Pa dumpdates
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file
|
1994-05-26 06:35:07 +00:00
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after a successful dump.
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The format of
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2001-07-10 09:34:55 +00:00
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the
|
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.Pa dumpdates
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file
|
1994-05-26 06:35:07 +00:00
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is readable by people, consisting of one
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|
free format record per line:
|
2002-08-21 18:11:48 +00:00
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|
|
file system name,
|
1994-05-26 06:35:07 +00:00
|
|
|
increment level
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|
and
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|
.Xr ctime 3
|
2001-07-15 07:53:42 +00:00
|
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|
format dump date.
|
2002-08-21 18:11:48 +00:00
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|
|
There may be only one entry per file system at each level.
|
2001-07-10 09:34:55 +00:00
|
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The
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.Pa dumpdates
|
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file
|
1994-05-26 06:35:07 +00:00
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may be edited to change any of the fields,
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if necessary.
|
2001-07-10 09:34:55 +00:00
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The default path for the
|
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.Pa dumpdates
|
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file is
|
2001-07-09 03:06:56 +00:00
|
|
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.Pa /etc/dumpdates ,
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but the
|
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.Fl D
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|
option may be used to change it.
|
1997-03-11 12:09:50 +00:00
|
|
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.It Fl W
|
2002-08-21 18:11:48 +00:00
|
|
|
Tell the operator what file systems need to be dumped.
|
1994-05-26 06:35:07 +00:00
|
|
|
This information is gleaned from the files
|
2001-07-10 09:34:55 +00:00
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|
|
.Pa dumpdates
|
1994-05-26 06:35:07 +00:00
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and
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.Pa /etc/fstab .
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The
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1997-03-11 12:09:50 +00:00
|
|
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.Fl W
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1994-05-26 06:35:07 +00:00
|
|
|
option causes
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
2002-08-21 18:11:48 +00:00
|
|
|
to print out, for each file system in
|
2001-07-10 09:34:55 +00:00
|
|
|
the
|
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|
.Pa dumpdates
|
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file
|
1994-05-26 06:35:07 +00:00
|
|
|
the most recent dump date and level,
|
2002-08-21 18:11:48 +00:00
|
|
|
and highlights those file systems that should be dumped.
|
1994-05-26 06:35:07 +00:00
|
|
|
If the
|
1997-03-11 12:09:50 +00:00
|
|
|
.Fl W
|
1994-05-26 06:35:07 +00:00
|
|
|
option is set, all other options are ignored, and
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
exits immediately.
|
1997-03-11 12:09:50 +00:00
|
|
|
.It Fl w
|
2003-02-23 01:50:07 +00:00
|
|
|
Is like
|
|
|
|
.Fl W ,
|
|
|
|
but prints only those file systems which need to be dumped.
|
1994-05-26 06:35:07 +00:00
|
|
|
.El
|
|
|
|
.Pp
|
2002-02-10 22:14:09 +00:00
|
|
|
Directories and regular files which have their
|
2001-03-03 11:35:50 +00:00
|
|
|
.Dq nodump
|
|
|
|
flag
|
|
|
|
.Pq Dv UF_NODUMP
|
2002-02-10 22:14:09 +00:00
|
|
|
set will be omitted along with everything under such directories,
|
|
|
|
subject to the
|
|
|
|
.Fl h
|
|
|
|
option.
|
2001-03-03 11:35:50 +00:00
|
|
|
.Pp
|
2002-07-06 19:34:18 +00:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility requires operator intervention on these conditions:
|
1994-05-26 06:35:07 +00:00
|
|
|
end of tape,
|
|
|
|
end of dump,
|
|
|
|
tape write error,
|
|
|
|
tape open error or
|
|
|
|
disk read error (if there are more than a threshold of 32).
|
|
|
|
In addition to alerting all operators implied by the
|
1997-03-11 12:09:50 +00:00
|
|
|
.Fl n
|
1994-05-26 06:35:07 +00:00
|
|
|
key,
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
interacts with the operator on
|
|
|
|
.Em dump's
|
|
|
|
control terminal at times when
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
can no longer proceed,
|
|
|
|
or if something is grossly wrong.
|
|
|
|
All questions
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
poses
|
|
|
|
.Em must
|
|
|
|
be answered by typing
|
|
|
|
.Dq yes
|
|
|
|
or
|
|
|
|
.Dq no ,
|
|
|
|
appropriately.
|
|
|
|
.Pp
|
|
|
|
Since making a dump involves a lot of time and effort for full dumps,
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
checkpoints itself at the start of each tape volume.
|
|
|
|
If writing that volume fails for some reason,
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
will,
|
|
|
|
with operator permission,
|
|
|
|
restart itself from the checkpoint
|
|
|
|
after the old tape has been rewound and removed,
|
|
|
|
and a new tape has been mounted.
|
|
|
|
.Pp
|
2002-07-06 19:34:18 +00:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility tells the operator what is going on at periodic intervals
|
2002-03-15 14:34:10 +00:00
|
|
|
(every 5 minutes, or promptly after receiving
|
|
|
|
.Dv SIGINFO ) ,
|
1994-05-26 06:35:07 +00:00
|
|
|
including usually low estimates of the number of blocks to write,
|
|
|
|
the number of tapes it will take, the time to completion, and
|
|
|
|
the time to the tape change.
|
|
|
|
The output is verbose,
|
|
|
|
so that others know that the terminal
|
|
|
|
controlling
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
is busy,
|
|
|
|
and will be for some time.
|
|
|
|
.Pp
|
|
|
|
In the event of a catastrophic disk event, the time required
|
|
|
|
to restore all the necessary backup tapes or files to disk
|
|
|
|
can be kept to a minimum by staggering the incremental dumps.
|
|
|
|
An efficient method of staggering incremental dumps
|
|
|
|
to minimize the number of tapes follows:
|
|
|
|
.Bl -bullet -offset indent
|
|
|
|
.It
|
|
|
|
Always start with a level 0 backup, for example:
|
|
|
|
.Bd -literal -offset indent
|
2001-03-09 13:06:53 +00:00
|
|
|
/sbin/dump -0u -f /dev/nsa0 /usr/src
|
1994-05-26 06:35:07 +00:00
|
|
|
.Ed
|
|
|
|
.Pp
|
|
|
|
This should be done at set intervals, say once a month or once every two months,
|
|
|
|
and on a set of fresh tapes that is saved forever.
|
|
|
|
.It
|
2002-08-21 18:11:48 +00:00
|
|
|
After a level 0, dumps of active file systems are taken on a daily basis,
|
1994-05-26 06:35:07 +00:00
|
|
|
using a modified Tower of Hanoi algorithm,
|
|
|
|
with this sequence of dump levels:
|
|
|
|
.Bd -literal -offset indent
|
|
|
|
3 2 5 4 7 6 9 8 9 9 ...
|
|
|
|
.Ed
|
|
|
|
.Pp
|
|
|
|
For the daily dumps, it should be possible to use a fixed number of tapes
|
|
|
|
for each day, used on a weekly basis.
|
|
|
|
Each week, a level 1 dump is taken, and
|
|
|
|
the daily Hanoi sequence repeats beginning with 3.
|
2002-08-21 18:11:48 +00:00
|
|
|
For weekly dumps, another fixed set of tapes per dumped file system is
|
1994-05-26 06:35:07 +00:00
|
|
|
used, also on a cyclical basis.
|
|
|
|
.El
|
|
|
|
.Pp
|
|
|
|
After several months or so, the daily and weekly tapes should get
|
|
|
|
rotated out of the dump cycle and fresh tapes brought in.
|
1995-11-18 18:00:43 +00:00
|
|
|
.Sh ENVIRONMENT
|
2003-01-10 10:59:11 +00:00
|
|
|
.Bl -tag -width ".Ev TAPE"
|
|
|
|
.It Ev TAPE
|
|
|
|
Device from which to read backup.
|
|
|
|
.It Ev RMT
|
|
|
|
Pathname of the remote
|
1995-11-18 18:00:43 +00:00
|
|
|
.Xr rmt 8
|
|
|
|
program.
|
2003-01-10 10:59:11 +00:00
|
|
|
.El
|
1994-05-26 06:35:07 +00:00
|
|
|
.Sh FILES
|
|
|
|
.Bl -tag -width /etc/dumpdates -compact
|
2001-03-09 13:06:53 +00:00
|
|
|
.It Pa /dev/sa0
|
1994-05-26 06:35:07 +00:00
|
|
|
default tape unit to dump to
|
|
|
|
.It Pa /etc/dumpdates
|
|
|
|
dump date records
|
2001-07-09 03:06:56 +00:00
|
|
|
(this can be changed;
|
|
|
|
see the
|
|
|
|
.Fl D
|
|
|
|
option)
|
1994-05-26 06:35:07 +00:00
|
|
|
.It Pa /etc/fstab
|
2002-08-21 18:11:48 +00:00
|
|
|
dump table: file systems and frequency
|
1994-05-26 06:35:07 +00:00
|
|
|
.It Pa /etc/group
|
|
|
|
to find group
|
|
|
|
.Em operator
|
|
|
|
.El
|
|
|
|
.Sh SEE ALSO
|
2002-02-10 22:14:09 +00:00
|
|
|
.Xr chflags 1 ,
|
1997-01-13 00:25:51 +00:00
|
|
|
.Xr fstab 5 ,
|
1994-05-26 06:35:07 +00:00
|
|
|
.Xr restore 8 ,
|
1997-01-13 00:25:51 +00:00
|
|
|
.Xr rmt 8
|
1994-05-26 06:35:07 +00:00
|
|
|
.Sh DIAGNOSTICS
|
|
|
|
Many, and verbose.
|
|
|
|
.Pp
|
|
|
|
Dump exits with zero status on success.
|
|
|
|
Startup errors are indicated with an exit code of 1;
|
|
|
|
abnormal termination is indicated with an exit code of 3.
|
|
|
|
.Sh BUGS
|
2002-08-21 18:11:48 +00:00
|
|
|
Fewer than 32 read errors on the file system are ignored.
|
1997-03-11 12:09:50 +00:00
|
|
|
.Pp
|
1994-05-26 06:35:07 +00:00
|
|
|
Each reel requires a new process, so parent processes for
|
|
|
|
reels already written just hang around until the entire tape
|
|
|
|
is written.
|
|
|
|
.Pp
|
1997-02-01 23:44:19 +00:00
|
|
|
Currently,
|
|
|
|
.Xr physio 9
|
2003-02-23 01:50:07 +00:00
|
|
|
slices all requests into chunks of 64 KB.
|
|
|
|
Therefore, it is
|
2002-04-17 02:10:33 +00:00
|
|
|
impossible to use a larger output block size, so
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1997-02-01 23:44:19 +00:00
|
|
|
will prevent this from happening.
|
1995-11-18 18:00:43 +00:00
|
|
|
.Pp
|
2002-07-06 19:34:18 +00:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility with the
|
1997-03-11 12:09:50 +00:00
|
|
|
.Fl W
|
1994-05-26 06:35:07 +00:00
|
|
|
or
|
1997-03-11 12:09:50 +00:00
|
|
|
.Fl w
|
2002-08-21 18:11:48 +00:00
|
|
|
options does not report file systems that have never been recorded
|
2001-07-10 09:34:55 +00:00
|
|
|
in the
|
|
|
|
.Pa dumpdates
|
|
|
|
file,
|
1994-05-26 06:35:07 +00:00
|
|
|
even if listed in
|
|
|
|
.Pa /etc/fstab .
|
|
|
|
.Pp
|
|
|
|
It would be nice if
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
knew about the dump sequence,
|
|
|
|
kept track of the tapes scribbled on,
|
|
|
|
told the operator which tape to mount when,
|
|
|
|
and provided more assistance
|
|
|
|
for the operator running
|
|
|
|
.Xr restore .
|
1997-02-09 20:56:34 +00:00
|
|
|
.Pp
|
2002-07-06 19:34:18 +00:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility cannot do remote backups without being run as root, due to its
|
2003-02-23 01:50:07 +00:00
|
|
|
security history.
|
|
|
|
This will be fixed in a later version of
|
2000-01-23 01:30:05 +00:00
|
|
|
.Fx .
|
1998-05-10 16:35:31 +00:00
|
|
|
Presently, it works if you set it setuid (like it used to be), but this
|
1997-02-09 20:56:34 +00:00
|
|
|
might constitute a security risk.
|
1994-05-26 06:35:07 +00:00
|
|
|
.Sh HISTORY
|
|
|
|
A
|
1998-06-15 06:58:13 +00:00
|
|
|
.Nm
|
2002-07-06 19:34:18 +00:00
|
|
|
utility appeared in
|
1996-08-23 01:06:24 +00:00
|
|
|
.At v6 .
|