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Thread: K3b; Spreading a Data Project over Multiple Discs?

  1. #1
    zak89 NNTP User

    Default K3b; Spreading a Data Project over Multiple Discs?


    I am trying to back up my 70GB's of digital photos to DVD. However, I
    currently don't own a Blue-Ray drive, so I need to spread it over
    several discs. I used to do this often in my Windows days with Roxio
    Creator Classic.

    I had thought that this was called "multi-session", but some googling
    seems to tell me that multi-session means leaving a disc open for
    further burning. So my question would be, what is the proper term for
    what I am trying to do? and secondly, how do I do this under linux?
    Neither K3b or Brasero seem to have any hints for me.

    I had thought that, in the past, whenever I tried to fit too many files
    on a disc k3b would automatically split the file over several discs.
    However, that certainly isn't happening now. Any hints?


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  2. #2
    zak89 NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    Okay, it appears that K3b does not have this functionality (which I am
    told is called "spanning"). In fact, none of the established linux
    CD/DVD burning software does. Very unfortunate. I found two projects
    that seem to be aiming at my problem. The first, multicd, looks
    abandoned and lacks documentation. The second looks much more hopefull.
    It's called discspan (a python script) and it looks like it does just
    what I need, except that when it tries to actually start burning the
    first disc, it crashes with the following message:

    Code:
    --------------------
    :-( /dev/sr0: 2295104 blocks are free, 4563438 to be written!
    :-( write failed: No space left on device
    genisoimage: Broken pipe. cannot fwrite 22528*1
    --------------------


    This is with a blank DVD+R in the drive.

    Does anyone else have experience with these tools or something similar?


    A second best would be a tool that would tar up my directory into DVD
    sized tarballs. Less than ideal (and rather embarrassing around my Mac
    and Windows loving friends), but it doesn't look like I have a lot of
    choices.


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  3. #3
    zak89 NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    Excuse me; does anyone have any ideas?

    Unfortunately partimage does not seem to be able to work with
    directories, only partitions.

    So now I am looking at having to create a partition, copy my files onto
    it, and then use partimage to create 4GB tarballs of the whole thing and
    burn each one individually to a DVD (about 18 discs)!

    I'm starting to envy my dad just a bit. When he drops too many files
    onto a DVD on his Mac it just starts burning them and then prompts for
    another disc.

    I can hardly believe that K3b lacks this (in my opinion) very basic
    functionality!


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  4. #4
    ken yap NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    Well it's hardly basic functionality. Not everybody backs up tens of GB
    of data on DVDs.

    Maybe you could search to see if someone has written a text utility to
    take a stream of filenames and to segment the list whenever the running
    total of file sizes goes over 4GB. This would have the advantage that
    each DVD is usable as is so you don't lose the whole set if one DVD
    develops a bad block, as would be the case if you simply split the
    generated image.


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  5. #5
    geoffro NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    OT Not sure what they cost where you are but i just bought a lacie 750gb
    usb drive for the same price as 4 packs of (25) dvds. Enough space to
    back up your whole system and more durable.

    /Geoff


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  6. #6
    Join Date
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    Default Re: K3b; Spreading a Data Project over Multiple Discs?

    On Saturday 27 December 2008 03:46, zak89 wrote:

    > I am trying to back up my 70GB's of digital photos to DVD. However, I
    > currently don't own a Blue-Ray drive, so I need to spread it over
    > several discs. I used to do this often in my Windows days with Roxio
    > Creator Classic.


    Even with BR, you'd need more than one disc for 70 GB.

    > I had thought that, in the past, whenever I tried to fit too many files
    > on a disc k3b would automatically split the file over several discs.
    > However, that certainly isn't happening now. Any hints?


    Feel free to use a script I wrote for that exact purpose.
    It's called xsplit_dvd.py and you can find it on
    http://www.rikishi42.net/SkunkWorks/Junk/

    It takes files from a source, and moves them to a destination dir,
    splitting the dirs in chunks of DVD size.

    Use a linked copy as sources, works best.


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  7. #7
    zak89 NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    Hey thanks, pal! You're my hero!

    I'll post back after I try it out,


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  8. #8
    zak89 NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    Ah, Rikishi42, would you mind giving my an example of the correct
    syntaxt for this script? I am looking at the source and I am not seeing
    how I pass the source and destination directories.

    Thanks!


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  9. #9
    Join Date
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    Location
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    Default Re: K3b; Spreading a Data Project over Multiple Discs?

    On Monday 29 December 2008 02:56, zak89 wrote:

    > Ah, Rikishi42, would you mind giving my an example of the correct
    > syntaxt for this script? I am looking at the source and I am not seeing
    > how I pass the source and destination directories.


    Put the script(s) in your "~/bin/".

    mkdir work/
    cd work
    mkdir in/
    mkdir out/

    Make a link copy of your data in the "in" dir:
    cp -vrl originals/* in/
    xsplit_dvd.py

    The dir work/out/ should contain the output dirs dvd_001, dvd_002, etc...


    Notes:
    - actually, the script creates out/ itself, if you don't.
    - Real Soon Now[R], I'll change the scripts, so they make the links
    themselves from the original data.
    - several xsplit_... scripts exist, with hardcoded volumes. You can change
    the volume yourself. In the future, the volume could be an argument.
    - if a file is found that is large than the block volume (a file bigger
    than 4.2 GB in you case, of a file biffer than 700 MB with xsplit_cd),
    that file is left in "in/" dir.
    - The previous point means that "in/" should be empty if everything went
    well.




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    There is an art, it says, or rather, a knack to flying.
    The knack lies in learning how to throw yourself at the ground and miss.
    Douglas Adams

  10. #10
    zak89 NNTP User

    Default Re: K3b; Spreading a Data Project over Multiple Discs?


    Works great! Though I did make an unfortunate mistake and deleted a
    bunch of the photos, Had an extra backup laying around so I think I'm
    okay (though I thought I'd faint when I realized what was happening).
    Now I got all my files ready to backup. Thanks a ton, Rikishi42!

    > Well it's hardly basic functionality. Not everybody backs up tens of GB
    > of data on DVDs.


    Well, true, but I haven't used a CD burning app on Windows that
    couldn't do this (Windows built-in CD burning excluded).


    --
    openSUSE 11.0; Kernel 2.6.25-pae; Intel Core 2 Quad Q6600 - 2.4Ghz; 6GB
    DDR2 RAM; M-Audio Delta 44 Audio Interface; 640GB SATA Disk.
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