NAME

       cdrestore - Streaming restore from CD-R(W)/DVD-R(W)

SYNOPSIS

       cdrestore [-qvDFRTV] [-d device] [-i image] [-l size]
                 [-t track] [-c command]

DESCRIPTION

       cdrestore is a utility to make streaming restores from CD-R(W)/DVD-R(W) disks. It's designed to work with
       any backup tool which is able to restore from stdin (like tar/cpio/afio).

OPTIONS

       -d device
              The device name which is used for reading the backup.
              (default: /dev/cdrom)

       -i image
              Enables virtual image mode. The backup stream is read from the given image file. You have  to  use
              this option, if you are restoring from a dumped image too.
              (default: none)

       -l size
              Specifies the media size. This value is used to display the free space on the media only.
              By  default the given value is taken as megabytes. You can append a single letter to the number to
              select: (k)ilobytes, (m)egabytes, (g)igabytes or (s)ectors (e.g. 170k, 4488m, 350000s).
              (default: 650m)

       -t track
              The number of the data track on the media for reading the backup.
              (default: none)

       -T     Enables test mode. The complete restore process is done  to  test  data  integrity  (includes  CRC
              checksum test, if available), but no data is output.
              NOTE:  This  only  verifies  that the data is readable by cdrestore at all. This doesn't guarantee
              that your backup software will be able to do a real restore with the data.

       -F     Forces cdrestore to begin the restore in the middle of a multi-disk set. This may be useful if you
              have lost a disk or a disk is badly damaged.
              NOTE:  This  will  most probably start the restore in the middle of a file. It's up to your backup
              software to sync to the beginning of the next file.

       -R     Disable the kernel readahead for the CDROM device during the restore  process.   (see  cdbackup(1)
              Known problems)

       -c command
              The  command  which  is  executed  whenever  cdrestore needs to request a new media for multi-disk
              backups. This command (or script) should prompt the user and return  after  the  device  is  ready
              again.  The  command  receives  one argument, which is the device name passed with -d. This can be
              used to issue commands to the device like ejecting the media.
              (default: use internal diskchange prompt)

       -q     Queries the media, prints out the contents and exits.

       -v     Enables verbose mode.

       -D     Enables DEBUG output (probably not useful for normal use).

       -V     Prints out version information and exits.

EXAMPLES

       Query the 700 MB media on /dev/sr0:

              cdrestore -d /dev/sr0 -l 700 -q

       Restore a tar archive to the current directory from track 2 of a 702 MB media on /dev/scd0:

              cdrestore -d /dev/scd0 -l 702 -t 2 | tar xf -

       Query the contents of a virtual image:

              cdrestore -i /tmp/vimage -l 4488m -q

       Check data integrity of track 3 in a virtual image after dumping it to DVD media:

              cdrestore -i /dev/dvd -t 3 -T

AUTHORS

       Stefan Huelswitt <s.huelswitt@gmx.de>

SEE ALSO

       cdbackup(1)

LICENSE

       Copyright (c) 2000-2012 Craig Condit, Stefan Huelswitt.

       Redistribution and use in source and binary forms, with or without modification, are  permitted  provided
       that the following conditions are met:

       1.     Redistributions of source code must retain the above copyright notice, this list of conditions and
              the following disclaimer.

       2.     Redistributions in binary form must reproduce the above copyright notice, this list of  conditions
              and  the  following  disclaimer  in  the  documentation  and/or  other materials provided with the
              distribution.

       THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,  INCLUDING,  BUT
       NOT  LIMITED  TO,  THE  IMPLIED  WARRANTIES  OF  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
       DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
       SPECIAL,  EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
       GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER  CAUSED  AND  ON  ANY
       THEORY  OF  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
       ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.