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Thread: Compressing on openSUSE: How to split into 4.7GB volumes

  1. #1
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    Default Compressing on openSUSE: How to split into 4.7GB volumes

    I'm trying to compress a 16GB folder into 2 DVD's, but I'm new to openSUSE and I've never compressed anything. Plus, I can't find any option that allows me to split it into volumes, is there a way of doing so?

    http://img856.imageshack.us/img856/9861/snapshot2ub.png

  2. #2

    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    Quote Originally Posted by amarildojr View Post
    I'm trying to compress a 16GB folder into 2 DVD's, but I'm new to openSUSE and I've never compressed anything. Plus, I can't find any option that allows me to split it into volumes, is there a way of doing so? http://img856.imageshack.us/img856/9861/snapshot2ub.png
    Hi, n easy way to do that would b to compress the folder into a sinle file first, using the archiver of your choice. Then split the resulting file with the "split" command (type split --help"). At your destination recreate the file (join it again) with the "cat" command. HTH Lenwolf

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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    Quote Originally Posted by amarildojr View Post
    I'm trying to compress a 16GB folder into 2 DVD's, but I'm new to openSUSE and I've never compressed anything. Plus, I can't find any option that allows me to split it into volumes, is there a way of doing so?

    http://img856.imageshack.us/img856/9861/snapshot2ub.png
    Custom splitting based on media is possible through using J7Z from http://software.opensuse.org/package/J7Z

    Floppy,CD,DVD etc
    Also support custom sizes like spitting into 1MB sizes



    Directory compressed and split into floppy size files

    GNOME Version 3.20.2
    openSUSE Leap 42.3 64-bit

    www.vazhavandan.blogspot.com

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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    Thank you all very much

  5. #5
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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    On 2013-05-01 08:56, amarildojr wrote:
    >
    > I'm trying to compress a 16GB folder into 2 DVD's, but I'm new to
    > openSUSE and I've never compressed anything. Plus, I can't find any
    > option that allows me to split it into volumes, is there a way of doing
    > so?


    This is a method:

    Code:
    
    > https://forums.opensuse.org/english/get-technical-help-here/how-faq-forums/unreviewed-how-faq/444240-procedure-backup-large-disk-image-across-several-dvds.html

    Other methods: There are proprietary compressors, like rar, which can
    split the archive on several files of a given size. The Linux version is
    CLI only. I don't know if it keeps Linux file attributes, I have not
    tested it and it is not mentioned in the documentation. Correction,
    there is a brief note, it might work).

    Opensource zip can not do this. However, you can create a big archive,
    then use it split to break it in pieces. To reconstruct the contents,
    you have to join the pieces into a single archive first, you can not
    just enter one DVD and uncompress it.

    (zip can split at an approximate size, but only on complete files
    inside. The proprietary msdos zip can split anywhere).

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.1 x86_64 "Asparagus" at Telcontar)

  6. #6

    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    Carlos E. R. wrote:
    > On 2013-05-01 08:56, amarildojr wrote:
    >> I'm trying to compress a 16GB folder into 2 DVD's, but I'm new to
    >> openSUSE and I've never compressed anything. Plus, I can't find any
    >> option that allows me to split it into volumes, is there a way of doing
    >> so?

    >
    > This is a method:
    >
    >
    Code:
    
    >> https://forums.opensuse.org/english/get-technical-help-here/how-faq-forums/unreviewed-how-faq/444240-procedure-backup-large-disk-image-across-several-dvds.html
    >


    Interesting. I like the idea of dvdisaster

    Could you compress to a single large file, then use split into 3.7 GB
    lumps and run dvdisaster on those? Slightly simpler if you can.

    > Other methods: There are proprietary compressors, like rar, which can
    > split the archive on several files of a given size. The Linux version is
    > CLI only. I don't know if it keeps Linux file attributes, I have not
    > tested it and it is not mentioned in the documentation. Correction,
    > there is a brief note, it might work).


    amanda can do mult-volume backup, as can various other progs. I expect
    amanda has all kinds of bells and whistles to tweak the process.

  7. #7
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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    Am 01.05.2013 17:28, schrieb Carlos E. R.:
    > Other methods: There are proprietary compressors, like rar, which can
    > split the archive on several files of a given size. The Linux version is
    > CLI only. I don't know if it keeps Linux file attributes, I have not
    > tested it and it is not mentioned in the documentation. Correction,
    > there is a brief note, it might work).


    file-roller can do it from the GUI if that is more pleasant. Select rar
    as archive type and in the advanced settings tell it how large the junks
    should be.
    I looked if Ark can do it as well (of course it can make a rar if rar is
    installed) but it seems to lack the setting to split the archive.

    --
    PC: oS 12.3 x86_64 | i7-2600@3.40GHz | 16GB | KDE 4.10.2 | GTX 650 Ti
    ThinkPad E320: oS 12.3 x86_64 | i3@2.30GHz | 8GB | KDE 4.10.2 | HD 3000
    HannsBook: oS 12.3 x86_64 | SU4100@1.3GHz | 2GB | KDE 4.10.2 | GMA4500

  8. #8
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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    On 2013-05-01 17:54, Dave Howorth wrote:
    > Carlos E. R. wrote:
    >> On 2013-05-01 08:56, amarildojr wrote:
    >>> I'm trying to compress a 16GB folder into 2 DVD's, but I'm new to
    >>> openSUSE and I've never compressed anything. Plus, I can't find any
    >>> option that allows me to split it into volumes, is there a way of doing
    >>> so?

    >>
    >> This is a method:
    >>
    >>
    Code:
    
    >>> https://forums.opensuse.org/english/get-technical-help-here/how-faq-forums/unreviewed-how-faq/444240-procedure-backup-large-disk-image-across-several-dvds.html
    >>

    >
    > Interesting. I like the idea of dvdisaster
    >
    > Could you compress to a single large file, then use split into 3.7 GB
    > lumps and run dvdisaster on those? Slightly simpler if you can.


    The problem is achieving compressed files of a certain size, like the
    3.7 GB you say. You can, as you say, compress to a large single file,
    and then split it in sizeable chunks. However, to reconstruct, you need
    reconstructing the entire large single file first, then expand it; you
    can not simply plug in the DVD and expand what it contains on the go.

    My method (which is complicated, I agree) was made for imaging large
    partitions, not directories with files.

    What I do is split the image in smaller chunks which I then compress
    with zisofs; then burn to a DVD a number of compressed chunks that
    approximate a DVD size (or less with dvdisaster info).

    The difference when using zisofs is that the kernel decompresses
    transparently the DVD, so that the DVD may apear to have, say, 7 GiB of
    files: no need to run a tool to decompress them. You can thus simple
    concatenate the chunks directly on the destination, no need for an
    intermediate space for decompression or joining of the splited chunks.

    My method is complicated for backup creation, but easier on
    reconstruction. However, with current hard disk sizes, it is just easier
    to image directly to another hard disk. Unfortunately, I do not know of
    a filesytem that can do compression on the fly and transparently.


    The unfortunate thing is that you can not, in Linux, use zip (or gzip)
    an archive to an arbitrary chunk size.


    >> Other methods: There are proprietary compressors, like rar, which can
    >> split the archive on several files of a given size. The Linux version is
    >> CLI only. I don't know if it keeps Linux file attributes, I have not
    >> tested it and it is not mentioned in the documentation. Correction,
    >> there is a brief note, it might work).

    >
    > amanda can do mult-volume backup, as can various other progs. I expect
    > amanda has all kinds of bells and whistles to tweak the process.


    I tried it once, but I found difficulties. It is made for network,
    enterprise, setups. I did not find it easier to backup to DVDs or hard
    disks via usb.

    I made a list of backup tools; not all of them I tried:

    dar
    rdiff-backup current copy is a mirror; older are rdifss.
    rsnapshot current copy is a mirror; older are hardlinks
    and new files.
    gadmin-rsync?
    http://www.dirvish.org/
    pdumpfs (http://0xcc.net/pdumpfs)
    duplicity
    duply
    Back-In-Time (http://backintime.le-web.org/)
    LuckyBackup
    deja-dup
    dropbox
    duplicity


    I don't know if there is a tool that can do backups of files or
    partitions, split the result on DVDs, and do all that with forward
    recovery data - ie, protection to recover the data on a DVD even in the
    case of damaged sectors (dvdisaster is for that).

    Decades ago, I used PCtools backup for MSdos. It did backups to
    floppies, and very fast. It created reconstruction data, so that
    floppies with damaged sectors could still be recovered. I believe that
    my 80 floppy backup sets are still usable - on old machines of the time.
    Unfortunately, this proprietary tool only worked with the same software
    version, and on certain hardware. It worked on my 386 machine, but not
    on my pentium machine, because it used a proprietary floppy low level
    format method that was both fast, safe, and large capacity, but it
    depended on the hardware.


    Anyway, I have not seen backup software for Linux capable of achieve
    similar results with, say, DVDs.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.1 x86_64 "Asparagus" at Telcontar)

  9. #9
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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    J7z is by far the best one, it gives me an GUI and it works fine =)

  10. #10
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    Default Re: Compressing on openSUSE: How to split into 4.7GB volumes

    On 2013-05-01 22:06, amarildojr wrote:
    >
    > J7z is by far the best one, it gives me an GUI and it works fine =)


    It is not distributed on openSUSE except by a home repo for 12.3 and 12.2.


    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.1 x86_64 "Asparagus" at Telcontar)

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