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cdrestore - Online in the Cloud

Run cdrestore in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command cdrestore that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

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 Hülswitt <s.huelswitt@gmx.de>

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