1GB zipfile limit?



  • Hello,

    We zip files with PACOMP, no options. When the zip file gets close to 1 GB (1,069,482,487 bytes) (1 GB = 1,073 741,824) an error is reported when unzipping at 99% “Error in ZIP structure. Continue Y/N?” This message-box appears twice and then the program exits. No unzip file is left. This is on Win2003 SP1 compressed FS).

    Smaller files (at least up to 966 MB (1,013,177,578 bytes)) do not show this issue.

    Is there a 1G file limitation or work-around?

    Thanks.



  • Not sure about this.
    PACL utilities are NOT Zip 4.5 compatible.

    This means that they are “limited” to less than 4 GB of data or 65,555 files.

    As 1GB is less than 4GB :p

    • how many files/folders comprise your data?


  • Just a single file. The file zipped however, is bigger than 4 GB.

    Do I understand correctly that files bigger than 4 GB are zipped with exit-code OK but can not be unzipped ?

    the batch script does
    PACOMP %.dmp %.dmp.zip && del. %.dmp

    Thanks,

    Denys



  • @dvkempen:

    Just a single file. The file zipped however, is bigger than 4 GB.

    Do I understand correctly that files bigger than 4 GB are zipped with exit-code OK but can not be unzipped ?

    I think that in this case the compression is failing - but no error message is generated, the “exit-code OK” is incorrect {a bug?}.


  • conexware

    Basically zip file is created, although it is not proper zip file. Zip headers are completly wrong so it does not work.



  • @spwolf:

    Basically zip file is created, although it is not proper zip file. Zip headers are completly wrong so it does not work.

    [Pedantic]
    So are you agreeing that “exit-code OK” is incorrect?
    😞
    [/pedantic]



  • I am trying to use PACL for managing my backup files. Since PACL does not support files in excess of 4G, I am looking at CAB. Is there any limit to the sizes of CAB files?


  • conexware

    @TBGBe:

    [Pedantic]
    So are you agreeing that “exit-code OK” is incorrect?
    😞
    [/pedantic]

    heh, old one… not, but before implementing its support for larger sized files, it will always bug out…


  • conexware

    @learned:

    I am trying to use PACL for managing my backup files. Since PACL does not support files in excess of 4G, I am looking at CAB. Is there any limit to the sizes of CAB files?

    CAB size limit is 2 GB. PA 2006 has built in backup tool (PABL), with unlimited file size support for zip files.



  • Unfortunatly the backuplite program doesn’t work for my process as I need to automate the process from a command line and build the directory structure dynamically. Failing that, does 7z (knowing I have to use the 7z command line utility) have any maximum file size?


  • conexware

    @learned:

    Unfortunatly the backuplite program doesn’t work for my process as I need to automate the process from a command line and build the directory structure dynamically. Failing that, does 7z (knowing I have to use the 7z command line utility) have any maximum file size?

    7zips are unlimited. Future major versions of PACL will have 7zip support as well.



  • Do you know when the next major version of PACL will be released? Will the next major verions support large files? That would be very useful to me.

    Thank you.


  • conexware

    @cavicster:

    Do you know when the next major version of PACL will be released? Will the next major verions support large files? That would be very useful to me.

    Thank you.

    We are not sure yet. We do plan to implement support for botz 7zip and zip 4.xx standards (with unlimited size support).



  • Is it a matter of weeks, months, a year? Sorry. I do not mean to be bothersome.

    Thank you.


  • conexware

    this year for sure.


  • conexware

    @cavicster:

    Is it a matter of weeks, months, a year? Sorry. I do not mean to be bothersome.

    Thank you.

    p.s. just to make sure, never purchase anything until you have it working as you want.



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