1994-05-26 06:35:07 +00:00
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.\" Copyright (c) 1985, 1991, 1993
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.\" The Regents of the University of California. 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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.\" 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 12:55:19 +00:00
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.\" @(#)restore.8 8.4 (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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1997-03-11 12:55:19 +00:00
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.\"
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.Dd May 1, 1995
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1994-05-26 06:35:07 +00:00
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.Dt RESTORE 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 12:27:33 +00:00
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.Nm restore ,
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.Nm rrestore
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2002-08-21 18:11:48 +00:00
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.Nd "restore files or file systems from backups made with dump"
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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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1997-03-11 12:55:19 +00:00
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.Fl i
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2005-03-18 17:49:08 +00:00
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.Op Fl dhmNuvy
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1997-03-11 12:55:19 +00:00
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.Op Fl b Ar blocksize
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2004-04-13 02:58:06 +00:00
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.Op Fl f Ar file | Fl P Ar pipecommand
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1997-03-11 12:55:19 +00:00
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.Op Fl s Ar fileno
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2000-11-20 16:52:27 +00:00
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.Nm
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1997-03-11 12:55:19 +00:00
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.Fl R
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2005-03-18 17:49:08 +00:00
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.Op Fl dNuvy
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1997-03-11 12:55:19 +00:00
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.Op Fl b Ar blocksize
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2004-04-13 02:58:06 +00:00
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.Op Fl f Ar file | Fl P Ar pipecommand
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1997-03-11 12:55:19 +00:00
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.Op Fl s Ar fileno
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2000-11-20 16:52:27 +00:00
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.Nm
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1997-03-11 12:55:19 +00:00
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.Fl r
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2005-03-18 17:49:08 +00:00
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.Op Fl dNuvy
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1997-03-11 12:55:19 +00:00
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.Op Fl b Ar blocksize
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2004-04-13 02:58:06 +00:00
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.Op Fl f Ar file | Fl P Ar pipecommand
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1997-03-11 12:55:19 +00:00
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.Op Fl s Ar fileno
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2000-11-20 16:52:27 +00:00
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.Nm
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1997-03-11 12:55:19 +00:00
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.Fl t
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2005-03-18 17:49:08 +00:00
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.Op Fl dhNuvy
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1997-03-11 12:55:19 +00:00
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.Op Fl b Ar blocksize
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2004-04-13 02:58:06 +00:00
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.Op Fl f Ar file | Fl P Ar pipecommand
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1997-03-11 12:55:19 +00:00
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.Op Fl s Ar fileno
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2001-02-13 09:56:35 +00:00
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.Op Ar
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2000-11-20 16:52:27 +00:00
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.Nm
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1997-03-11 12:55:19 +00:00
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.Fl x
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2005-03-18 17:49:08 +00:00
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.Op Fl dhmNuvy
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1997-03-11 12:55:19 +00:00
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.Op Fl b Ar blocksize
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2004-04-13 02:58:06 +00:00
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.Op Fl f Ar file | Fl P Ar pipecommand
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1997-03-11 12:55:19 +00:00
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.Op Fl s Ar fileno
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2001-02-13 09:56:35 +00:00
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.Op Ar
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1997-03-11 12:55:19 +00:00
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.Pp
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2002-04-12 18:31:09 +00:00
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.Nm rrestore
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is an alternate name for
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.Nm .
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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 12:55:19 +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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The
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2000-11-20 16:52:27 +00:00
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.Nm
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2002-07-06 19:35:14 +00:00
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utility performs the inverse function of
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1994-05-26 06:35:07 +00:00
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.Xr dump 8 .
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2002-08-21 18:11:48 +00:00
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A full backup of a file system may be restored and
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1994-05-26 06:35:07 +00:00
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subsequent incremental backups layered on top of it.
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Single files and
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directory subtrees may be restored from full or partial
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backups.
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2002-07-06 19:35:14 +00:00
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The
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.Nm
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utility works across a network;
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1994-05-26 06:35:07 +00:00
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to do this see the
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.Fl f
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2004-04-13 02:58:06 +00:00
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and
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.Fl P
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flags described below.
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1994-05-26 06:35:07 +00:00
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Other arguments to the command are file or directory
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names specifying the files that are to be restored.
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Unless the
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1997-03-11 12:55:19 +00:00
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.Fl h
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flag is specified (see below),
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1994-05-26 06:35:07 +00:00
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the appearance of a directory name refers to
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the files and (recursively) subdirectories of that directory.
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.Pp
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1997-03-11 12:55:19 +00:00
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Exactly one of the following flags is required:
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1994-05-26 06:35:07 +00:00
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.Bl -tag -width Ds
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1997-03-11 12:55:19 +00:00
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.It Fl i
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1994-05-26 06:35:07 +00:00
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This mode allows interactive restoration of files from a dump.
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After reading in the directory information from the dump,
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2000-11-20 16:52:27 +00:00
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.Nm
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1994-05-26 06:35:07 +00:00
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provides a shell like interface that allows the user to move
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around the directory tree selecting files to be extracted.
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The available commands are given below;
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for those commands that require an argument,
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the default is the current directory.
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.Bl -tag -width Fl
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.It Ic add Op Ar arg
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The current directory or specified argument is added to the list of
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files to be extracted.
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If a directory is specified, then it and all its descendents are
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added to the extraction list
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(unless the
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1997-03-11 12:55:19 +00:00
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.Fl h
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flag is specified on the command line).
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1994-05-26 06:35:07 +00:00
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Files that are on the extraction list are prepended with a ``*''
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2001-07-15 07:53:42 +00:00
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when they are listed by
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1994-05-26 06:35:07 +00:00
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.Ic ls .
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.It Ic \&cd Ar arg
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Change the current working directory to the specified argument.
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.It Ic delete Op Ar arg
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The current directory or specified argument is deleted from the list of
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files to be extracted.
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If a directory is specified, then it and all its descendents are
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deleted from the extraction list
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(unless the
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1997-03-11 12:55:19 +00:00
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.Fl h
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flag is specified on the command line).
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2001-07-15 07:53:42 +00:00
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The most expedient way to extract most of the files from a directory
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1994-05-26 06:35:07 +00:00
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is to add the directory to the extraction list and then delete
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those files that are not needed.
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.It Ic extract
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All the files that are on the extraction list are extracted
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from the dump.
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2002-07-06 19:35:14 +00:00
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The
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.Nm
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utility will ask which volume the user wishes to mount.
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1994-05-26 06:35:07 +00:00
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The fastest way to extract a few files is to
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start with the last volume, and work towards the first volume.
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.It Ic help
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List a summary of the available commands.
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.It Ic \&ls Op Ar arg
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List the current or specified directory.
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Entries that are directories are appended with a ``/''.
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Entries that have been marked for extraction are prepended with a ``*''.
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1997-03-11 12:55:19 +00:00
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If the verbose
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flag is set the inode number of each entry is also listed.
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1994-05-26 06:35:07 +00:00
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.It Ic pwd
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Print the full pathname of the current working directory.
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.It Ic quit
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2002-07-06 19:35:14 +00:00
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Exit immediately,
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1994-05-26 06:35:07 +00:00
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even if the extraction list is not empty.
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.It Ic setmodes
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All the directories that have been added to the extraction list
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have their owner, modes, and times set;
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nothing is extracted from the dump.
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This is useful for cleaning up after a restore has been prematurely aborted.
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.It Ic verbose
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2001-07-15 07:53:42 +00:00
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The sense of the
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1997-03-11 12:55:19 +00:00
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.Fl v
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flag is toggled.
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2001-07-15 07:53:42 +00:00
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When set, the verbose flag causes the
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1994-05-26 06:35:07 +00:00
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.Ic ls
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command to list the inode numbers of all entries.
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It also causes
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2000-11-20 16:52:27 +00:00
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.Nm
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1994-05-26 06:35:07 +00:00
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to print out information about each file as it is extracted.
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2001-06-20 04:00:43 +00:00
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.It Ic what
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2002-07-06 19:35:14 +00:00
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Display dump header information, which includes: date,
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2002-08-21 18:11:48 +00:00
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level, label, and the file system and host dump was made
|
2001-06-20 04:00:43 +00:00
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from.
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1994-05-26 06:35:07 +00:00
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.El
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1997-03-11 12:55:19 +00:00
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.It Fl R
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2002-07-06 19:35:14 +00:00
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Request a particular tape of a multi volume set on which to restart
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1997-03-11 12:55:19 +00:00
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a full restore
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(see the
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.Fl r
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flag below).
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This is useful if the restore has been interrupted.
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.It Fl r
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2002-08-21 18:11:48 +00:00
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Restore (rebuild a file system).
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The target file system should be made pristine with
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1997-03-11 12:55:19 +00:00
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.Xr newfs 8 ,
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mounted and the user
|
2003-06-08 12:51:28 +00:00
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.Xr cd 1 Ns 'd
|
2002-08-21 18:11:48 +00:00
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into the pristine file system
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2000-03-01 11:27:47 +00:00
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before starting the restoration of the initial level 0 backup.
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If the
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1997-03-11 12:55:19 +00:00
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level 0 restores successfully, the
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.Fl r
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flag may be used to restore
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any necessary incremental backups on top of the level 0.
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The
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.Fl r
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flag precludes an interactive file extraction and can be
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detrimental to one's health if not used carefully (not to mention
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2004-07-02 21:45:06 +00:00
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the disk).
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An example:
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1997-03-11 12:55:19 +00:00
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.Bd -literal -offset indent
|
2000-05-07 09:16:56 +00:00
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newfs /dev/da0s1a
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mount /dev/da0s1a /mnt
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1997-03-11 12:55:19 +00:00
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cd /mnt
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2001-03-09 13:06:09 +00:00
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restore rf /dev/sa0
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1997-03-11 12:55:19 +00:00
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.Ed
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.Pp
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2001-07-15 07:53:42 +00:00
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Note that
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2000-11-20 16:52:27 +00:00
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.Nm
|
2001-07-15 07:53:42 +00:00
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leaves a file
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1997-03-11 12:55:19 +00:00
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.Pa restoresymtable
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in the root directory to pass information between incremental
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restore passes.
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This file should be removed when the last incremental has been
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restored.
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.Pp
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2002-07-06 19:35:14 +00:00
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The
|
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.Nm
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utility ,
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1997-03-11 12:55:19 +00:00
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in conjunction with
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.Xr newfs 8
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and
|
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|
.Xr dump 8 ,
|
2002-08-21 18:11:48 +00:00
|
|
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may be used to modify file system parameters
|
1997-03-11 12:55:19 +00:00
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such as size or block size.
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.It Fl t
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The names of the specified files are listed if they occur
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on the backup.
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If no file argument is given,
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|
then the root directory is listed,
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|
which results in the entire content of the
|
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|
backup being listed,
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unless the
|
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.Fl h
|
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flag has been specified.
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Note that the
|
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|
.Fl t
|
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|
flag replaces the function of the old
|
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|
.Xr dumpdir 8
|
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program.
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.It Fl x
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The named files are read from the given media.
|
2001-07-15 07:53:42 +00:00
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If a named file matches a directory whose contents
|
1997-03-11 12:55:19 +00:00
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|
|
are on the backup
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and the
|
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.Fl h
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flag is not specified,
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the directory is recursively extracted.
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The owner, modification time,
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and mode are restored (if possible).
|
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|
If no file argument is given,
|
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|
then the root directory is extracted,
|
|
|
|
which results in the entire content of the
|
|
|
|
backup being extracted,
|
|
|
|
unless the
|
|
|
|
.Fl h
|
|
|
|
flag has been specified.
|
1994-05-26 06:35:07 +00:00
|
|
|
.El
|
|
|
|
.Pp
|
1997-03-11 12:55:19 +00:00
|
|
|
The following additional options may be specified:
|
1994-05-26 06:35:07 +00:00
|
|
|
.Bl -tag -width Ds
|
1997-03-11 12:55:19 +00:00
|
|
|
.It Fl b Ar blocksize
|
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|
The number of kilobytes per dump record.
|
1994-05-26 06:35:07 +00:00
|
|
|
If the
|
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.Fl b
|
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|
option is not specified,
|
2000-11-20 16:52:27 +00:00
|
|
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.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
tries to determine the media block size dynamically.
|
2001-10-02 08:24:37 +00:00
|
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.It Fl d
|
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|
Sends verbose debugging output to the standard error.
|
1997-03-11 12:55:19 +00:00
|
|
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.It Fl f Ar file
|
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|
Read the backup from
|
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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
|
2001-03-09 13:06:09 +00:00
|
|
|
.Pa /dev/sa0
|
1997-03-11 12:55:19 +00:00
|
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(a tape drive),
|
2000-05-07 09:16:56 +00:00
|
|
|
.Pa /dev/da1c
|
1997-03-11 12:55:19 +00:00
|
|
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(a disk drive),
|
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|
|
an ordinary file,
|
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or
|
2002-12-23 16:04:51 +00:00
|
|
|
.Sq Fl
|
1997-03-11 12:55:19 +00:00
|
|
|
(the standard input).
|
1994-05-26 06:35:07 +00:00
|
|
|
If the name of the file is of the form
|
|
|
|
.Dq host:file ,
|
1997-03-11 12:55:19 +00:00
|
|
|
or
|
|
|
|
.Dq user@host:file ,
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
reads from the named file on the remote host using
|
|
|
|
.Xr rmt 8 .
|
2004-04-13 02:58:06 +00:00
|
|
|
.It Fl P Ar pipecommand
|
|
|
|
Use
|
|
|
|
.Xr popen 3
|
|
|
|
to execute the
|
|
|
|
.Xr sh 1
|
|
|
|
script string defined by
|
|
|
|
.Ar pipecommand
|
|
|
|
as the input for every volume in the backup.
|
|
|
|
This child pipeline's
|
|
|
|
.Dv stdout
|
2004-05-17 08:35:43 +00:00
|
|
|
.Pq Pa /dev/fd/1
|
2004-04-13 02:58:06 +00:00
|
|
|
is redirected to the
|
|
|
|
.Nm
|
|
|
|
input stream, and the environment variable
|
|
|
|
.Ev RESTORE_VOLUME
|
|
|
|
is set to the current volume number being read.
|
|
|
|
The
|
|
|
|
.Ar pipecommand
|
|
|
|
script is started each time a volume is loaded, as if it were a tape drive.
|
1997-03-11 12:55:19 +00:00
|
|
|
.It Fl h
|
2001-07-15 07:53:42 +00:00
|
|
|
Extract the actual directory,
|
1994-05-26 06:35:07 +00:00
|
|
|
rather than the files that it references.
|
|
|
|
This prevents hierarchical restoration of complete subtrees
|
|
|
|
from the dump.
|
1997-03-11 12:55:19 +00:00
|
|
|
.It Fl m
|
|
|
|
Extract by inode numbers rather than by file name.
|
1994-05-26 06:35:07 +00:00
|
|
|
This is useful if only a few files are being extracted,
|
|
|
|
and one wants to avoid regenerating the complete pathname
|
|
|
|
to the file.
|
2000-02-17 02:15:18 +00:00
|
|
|
.It Fl N
|
2001-07-15 07:53:42 +00:00
|
|
|
Do the extraction normally, but do not actually write any changes
|
2000-03-01 11:27:47 +00:00
|
|
|
to disk.
|
2001-07-15 07:53:42 +00:00
|
|
|
This can be used to check the integrity of dump media
|
2000-02-17 02:15:18 +00:00
|
|
|
or other test purposes.
|
1997-03-11 12:55:19 +00:00
|
|
|
.It Fl s Ar fileno
|
|
|
|
Read from the specified
|
|
|
|
.Ar fileno
|
|
|
|
on a multi-file tape.
|
|
|
|
File numbering starts at 1.
|
1998-05-09 05:23:02 +00:00
|
|
|
.It Fl u
|
|
|
|
When creating certain types of files, restore may generate a warning
|
|
|
|
diagnostic if they already exist in the target directory.
|
|
|
|
To prevent this, the
|
|
|
|
.Fl u
|
|
|
|
(unlink) flag causes restore to remove old entries before attempting
|
|
|
|
to create new ones.
|
1997-03-11 12:55:19 +00:00
|
|
|
.It Fl v
|
1994-05-26 06:35:07 +00:00
|
|
|
Normally
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
does its work silently.
|
|
|
|
The
|
1997-03-11 12:55:19 +00:00
|
|
|
.Fl v
|
1994-05-26 06:35:07 +00:00
|
|
|
(verbose)
|
1997-03-11 12:55:19 +00:00
|
|
|
flag causes it to type the name of each file it treats
|
1994-05-26 06:35:07 +00:00
|
|
|
preceded by its file type.
|
1997-03-11 12:55:19 +00:00
|
|
|
.It Fl y
|
|
|
|
Do not ask the user whether to abort the restore in the event of an error.
|
|
|
|
Always try to skip over the bad block(s) and continue.
|
1994-05-26 06:35:07 +00:00
|
|
|
.El
|
2005-01-18 10:09:38 +00:00
|
|
|
.Sh ENVIRONMENT
|
|
|
|
.Bl -tag -width ".Ev TMPDIR"
|
|
|
|
.It Ev TAPE
|
|
|
|
Device from which to read backup.
|
|
|
|
.It Ev TMPDIR
|
|
|
|
Name of directory where temporary files are to be created.
|
|
|
|
.El
|
|
|
|
.Sh FILES
|
|
|
|
.Bl -tag -width "./restoresymtable" -compact
|
|
|
|
.It Pa /dev/sa0
|
|
|
|
the default tape drive
|
|
|
|
.It Pa /tmp/rstdir*
|
|
|
|
file containing directories on the tape.
|
|
|
|
.It Pa /tmp/rstmode*
|
|
|
|
owner, mode, and time stamps for directories.
|
|
|
|
.It Pa \&./restoresymtable
|
|
|
|
information passed between incremental restores.
|
|
|
|
.El
|
1994-05-26 06:35:07 +00:00
|
|
|
.Sh DIAGNOSTICS
|
2002-07-06 19:35:14 +00:00
|
|
|
The
|
2001-08-20 02:16:41 +00:00
|
|
|
.Nm
|
2002-07-06 19:35:14 +00:00
|
|
|
utility complains if it gets a read error.
|
2001-07-15 07:53:42 +00:00
|
|
|
If
|
1997-03-11 12:55:19 +00:00
|
|
|
.Fl y
|
1994-05-26 06:35:07 +00:00
|
|
|
has been specified, or the user responds
|
|
|
|
.Ql y ,
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
will attempt to continue the restore.
|
|
|
|
.Pp
|
|
|
|
If a backup was made using more than one tape volume,
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
will notify the user when it is time to mount the next volume.
|
|
|
|
If the
|
1997-03-11 12:55:19 +00:00
|
|
|
.Fl x
|
1994-05-26 06:35:07 +00:00
|
|
|
or
|
1997-03-11 12:55:19 +00:00
|
|
|
.Fl i
|
|
|
|
flag has been specified,
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
will also ask which volume the user wishes to mount.
|
|
|
|
The fastest way to extract a few files is to
|
|
|
|
start with the last volume, and work towards the first volume.
|
|
|
|
.Pp
|
|
|
|
There are numerous consistency checks that can be listed by
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm .
|
1994-05-26 06:35:07 +00:00
|
|
|
Most checks are self-explanatory or can ``never happen''.
|
|
|
|
Common errors are given below.
|
|
|
|
.Pp
|
|
|
|
.Bl -tag -width Ds -compact
|
2002-08-21 18:11:48 +00:00
|
|
|
.It Converting to new file system format.
|
|
|
|
A dump tape created from the old file system has been loaded.
|
|
|
|
It is automatically converted to the new file system format.
|
1994-05-26 06:35:07 +00:00
|
|
|
.Pp
|
|
|
|
.It <filename>: not found on tape
|
|
|
|
The specified file name was listed in the tape directory,
|
|
|
|
but was not found on the tape.
|
|
|
|
This is caused by tape read errors while looking for the file,
|
2002-08-21 18:11:48 +00:00
|
|
|
and from using a dump tape created on an active file system.
|
1994-05-26 06:35:07 +00:00
|
|
|
.Pp
|
|
|
|
.It expected next file <inumber>, got <inumber>
|
|
|
|
A file that was not listed in the directory showed up.
|
2002-08-21 18:11:48 +00:00
|
|
|
This can occur when using a dump created on an active file system.
|
1994-05-26 06:35:07 +00:00
|
|
|
.Pp
|
|
|
|
.It Incremental dump too low
|
|
|
|
When doing incremental restore,
|
|
|
|
a dump that was written before the previous incremental dump,
|
|
|
|
or that has too low an incremental level has been loaded.
|
|
|
|
.Pp
|
|
|
|
.It Incremental dump too high
|
|
|
|
When doing incremental restore,
|
2001-07-15 07:53:42 +00:00
|
|
|
a dump that does not begin its coverage where the previous incremental
|
1994-05-26 06:35:07 +00:00
|
|
|
dump left off,
|
|
|
|
or that has too high an incremental level has been loaded.
|
|
|
|
.Pp
|
|
|
|
.It Tape read error while restoring <filename>
|
|
|
|
.It Tape read error while skipping over inode <inumber>
|
|
|
|
.It Tape read error while trying to resynchronize
|
|
|
|
A tape (or other media) read error has occurred.
|
|
|
|
If a file name is specified,
|
|
|
|
then its contents are probably partially wrong.
|
|
|
|
If an inode is being skipped or the tape is trying to resynchronize,
|
|
|
|
then no extracted files have been corrupted,
|
|
|
|
though files may not be found on the tape.
|
|
|
|
.Pp
|
|
|
|
.It resync restore, skipped <num> blocks
|
2001-07-15 07:53:42 +00:00
|
|
|
After a dump read error,
|
2000-11-20 16:52:27 +00:00
|
|
|
.Nm
|
1994-05-26 06:35:07 +00:00
|
|
|
may have to resynchronize itself.
|
|
|
|
This message lists the number of blocks that were skipped over.
|
|
|
|
.El
|
|
|
|
.Sh SEE ALSO
|
|
|
|
.Xr dump 8 ,
|
|
|
|
.Xr mount 8 ,
|
1997-01-13 00:25:51 +00:00
|
|
|
.Xr newfs 8 ,
|
1994-05-26 06:35:07 +00:00
|
|
|
.Xr rmt 8
|
2005-01-18 10:09:38 +00:00
|
|
|
.Sh HISTORY
|
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility appeared in
|
|
|
|
.Bx 4.2 .
|
1994-05-26 06:35:07 +00:00
|
|
|
.Sh BUGS
|
2002-07-06 19:35:14 +00:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility can get confused when doing incremental restores from
|
2002-08-21 18:11:48 +00:00
|
|
|
dumps that were made on active file systems.
|
1994-05-26 06:35:07 +00:00
|
|
|
.Pp
|
|
|
|
A level zero dump must be done after a full restore.
|
|
|
|
Because restore runs in user code,
|
|
|
|
it has no control over inode allocation;
|
1995-01-18 19:26:14 +00:00
|
|
|
thus a full dump must be done to get a new set of directories
|
1994-05-26 06:35:07 +00:00
|
|
|
reflecting the new inode numbering,
|
|
|
|
even though the contents of the files is unchanged.
|
1997-02-09 18:03:41 +00:00
|
|
|
.Pp
|
2004-07-02 21:45:06 +00:00
|
|
|
To do a network restore, you have to run restore as root.
|
|
|
|
This is due
|
|
|
|
to the previous security history of dump and restore.
|
|
|
|
(restore is
|
1997-02-09 18:03:41 +00:00
|
|
|
written to be setuid root, but we are not certain all bugs are gone
|
|
|
|
from the restore code - run setuid at your own risk.)
|
2000-08-11 10:37:39 +00:00
|
|
|
.Pp
|
|
|
|
The temporary files
|
|
|
|
.Pa /tmp/rstdir*
|
|
|
|
and
|
|
|
|
.Pa /tmp/rstmode*
|
|
|
|
are generated with a unique name based on the date of the dump
|
|
|
|
and the process ID (see
|
2001-01-16 09:15:57 +00:00
|
|
|
.Xr mktemp 3 ) ,
|
2000-08-11 10:37:39 +00:00
|
|
|
except for when
|
|
|
|
.Fl r
|
|
|
|
or
|
|
|
|
.Fl R
|
|
|
|
is used.
|
|
|
|
Because
|
|
|
|
.Fl R
|
|
|
|
allows you to restart a
|
|
|
|
.Fl r
|
|
|
|
operation that may have been interrupted, the temporary files should
|
|
|
|
be the same across different processes.
|
|
|
|
In all other cases, the files are unique because it is possible to
|
|
|
|
have two different dumps started at the same time, and separate
|
2005-02-13 22:25:33 +00:00
|
|
|
operations should not conflict with each other.
|