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Thread: Production / Test using partimage

  1. #1
    Junior Member registered user
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    Production / Test using partimage

    I am currently running knoppix installed on one partition of my hard drive. I am planning on creating another reiserfs partition to use for a knoppix test version.

    sda3 - knoppix production, my stable environment
    sda4 - to be my test environment

    I am planning on using partimage to make a copy of sda3 partion which I would then build sda4 using this copy. I would then like to do my testing on sda4. Then when I am happy with that environment I would like to copy sda4 back to sda3 (Production). I have a couple of questions.

    1) Is this possible and does it sound like the right way to meet my needs
    2) Trying to think this through I realize that there would be references to the partition where my copy originates from. When I copy from one partition to the next say from sda4 to sda3, I was wondering what files would be impacted by partition addresses (i.e. sda4 references that would need to be changed to sda3).

    I hope this makes a little sense. I can probably clarify this a little more if you need me to.

    Thank you...in advance,
    Chip

  2. #2
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    Boot off the Knoppix CD/DVD. I use the cheat code: knoppix 2 dma vga=normal

    At the root prompt, use cfdsik and create the sda4
    cfdisk /dev/sda

    Once that is done you should reboot to make sure the changes are applied to the partition table. Next format reiserfs on sda4.
    mkreiserfs /dev/sda4

    Now mount the original and the new root paritions:
    mount /dev/sda3 /mnt/sda3
    mount /dev/sda4 /mnt/sda4

    Copy your current linux system to the new HD:
    cp -Rp /mnt/sda1/* /mnt/sda4

    Once that completes then edit the /mnt/sda4/etc/fstab file.
    change / from pointing to /dev/sda3 to /dev/sda4

    Then edit /mnt/sda3/boot/grub/menu.lst and copy the three or four lines that represent the normal boot entry for knoppix. Paste them to the end of the file and change the title. Also change the reference from (hd0,2) to (hd0,3) or /dev/sda3 to /dev/sda4.

    Save the changes and unmount /mnt/sda3 & /mnt/sda4
    Reboot and it should work.

    I hope this helps.
    James

  3. #3
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    Production / Test using partimage

    You are going to need the -d (dereference) switch in that copy command also so as not to follow symbolic links and copy the links themselves.

    While your at it, just use the -a switch (for archive) as it combines the -dpR arguments.

  4. #4
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    I was able to create my sda4 partition as reiserfs. I am now trying to mount that partition but it say's I need an entry in the etc/fstabs file. My current file looks like this

    # /etc/fstab: filesystem table.
    #
    # filesystem mountpoint type options dump pass
    /dev/sda3 / reiserfs defaults 0 1

    proc /proc proc defaults 0 0
    /dev/fd0 /floppy vfat defaults,user,noauto,showexec,umask=022 0 0
    usbfs /proc/bus/usb usbfs devmode=0666 0 0
    sysfs /sys sysfs defaults 0 0
    tmpfs /dev/shm tmpfs defaults 0 0
    /dev/cdrom /cdrom iso9660 defaults,ro,users,noexec,noauto 0 0
    /dev/dvd /dvd iso9660 defaults,ro,users,noexec,noauto 0 0
    # Added by KNOPPIX
    /dev/sda1 /mnt/sda1 vfat noauto,users,exec,umask=000 0 0
    # Added by KNOPPIX
    /dev/sda2 none swap defaults 0 0
    # Added by Cyoung for camera
    # /dev/sdb1 /mnt/camera auto noauto,user,rw 0
    /dev/sdb1 /mnt/camera auto noauto,users,exec 0

    My question is what should my line look like for sda4 reiserfs?
    Do I also need a folder in the mnt directory for sda4?
    Once I am able to mount sda4 and copy all of my files from sda3, how do I change fstabs to show which partition I am pointing at since it looks like just a list of all available partitions?

    Thanks again. That was a very quick response.

    Learning more each day!
    Chip

  5. #5
    Senior Member registered user
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    Production / Test using partimage

    Although we are happy to help those in need, what you are asking for is a tutorial on basic UNIX/Linux system administration.

    In order to become more proficient, and have ready references at hand, may I suggest that you begin to acquire a library to assist you.

    There are many excellent texts in the USD20-30 range as well as probably some material at your local liibrary.

    Your system itself should be your first source. Learn to use the manual pages installed at your system. The command: man , followed by almost any command or configuration_file_name will give you basic information concerning such and often references to further information. The command: apropos followed by a search string will give you a list of the manual pages that include same.

    In your case: man fstab , man reiserfs, man mount, man partimage, man cp, etc

    If you really get stuck, please post with the exact command that is giving you trouble.

    The comment, " I am now trying to mount that partition but it say's I need an entry in the etc/fstabs file", does not give us much information and simply makes a reply more difficult as we have to guess what your likely actions were.

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