steps: how to backup on DVD in RHEL4?

Discussion in 'HOWTO-Related Questions' started by shamuk80, Mar 4, 2008.

  1. shamuk80

    shamuk80 New Member

    Hi all,

    Can any body check, the steps to take the data backup on DVD.
    please make corrections if I am missing some thing. or any other way to do this. All I need to take backup of .tar.gz files to DVDs.

    I have installed dvd+rw-tools.

    1. dmesg
    The last few lines of /var/log/dmesg ( just wanted to know where this device is attached )

    sr0: CDROM (ioctl) error, command: Xpwrite, Read disk info 00 00 00 00 00 00 00 02 00
    sr: old sense key No Sense
    Non-extended sense class 0 code 0x0
    usb 1-1: new high speed USB device using address 4
    scsi3 : SCSI emulation for USB Mass Storage devices
    Vendor: FREECOM_ Model: DVD+/-RW20J6 Rev: 9F51
    Type: CD-ROM ANSI SCSI revision: 02
    sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw xa/form2 cdda tray
    Attached scsi CD-ROM sr0 at scsi3, channel 0, id 0, lun 0
    USB Mass Storage device found at 4
    cdrom: This disc doesn't have any tracks I recognize!

    Is this attached to sdc1 or sr0 ?? (Attached scsi CD-ROM sr0 at scsi3)

    2. cdrecord -scanbus

    Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
    Note: This version is an unofficial (modified) version with DVD support
    Note: and therefore may have bugs that are not present in the original.
    Note: Please send bug reports or support requests to
    Note: The author of cdrecord should not be bothered with problems in this version.
    Linux sg driver version: 3.5.27
    Using libscg version 'schily-0.8'.
    cdrecord: Warning: using inofficial libscg transport code version (schily - Red Hat-scsi-linux-sg.c-1.83-RH '@(#)scsi-linux-sg.c 1.83 04/05/20 Copyright 1997 J. Schilling').
    2,0,0 200) 'FREECOM_' 'DVD+/-RW20J6 ' '9F51' Removable CD-ROM
    2,1,0 201) *
    2,2,0 202) *
    2,3,0 203) *
    2,4,0 204) *
    2,5,0 205) *
    2,6,0 206) *
    2,7,0 207) *

    Question: Can any body tell me why we get output different when i run this command? like

    2,0,0 200) 'FREECOM_' 'DVD+/-RW20J6 ' '9F51' Removable CD-ROM

    3,0,0 300) 'FREECOM_' 'DVD+/-RW20J6 ' '9F51' Removable CD-ROM

    3. mount -r -t iso9660 /dev/hdc /media/cdrecorder

    4. To create the ISO image.

    # mkisofs -r -o /tmp/home-backup-disk1.iso /home/backup

    5. Now use the growisofs command to write the ISO onto the DVD.

    # growisofs -Z /dev/dvd=/tmp/home-backup-disk1.iso

    Will these steps work??

    I was looking on some site where these commands were mentioned

    Backup a directory to a CD:
    One step: mkisofs -r -R -J -l -L /home/user1 | cdrecord dev=0,4,0 -v --eject speed=4 -
    or the two step variation of the process:
    mkisofs -r -R -J -l -L -allow-multidot -o /tmp/backup.iso -graft-points "/home/user1=/home/user1"
    cdrecord dev=0,4,0 -v --eject speed=4
    Make sure directory does not hold more than CD capacity (700Mb typically). Check with the command: du -s /home/user1

    Can any body explain the abouve bold and italic lines ??

    tell me which way is good the steps i wrote or these commands? what if i need to use the blank part of the DVD again?

    waiting for an earlier response.


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