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[Case 111853] Unable to extract backup using 7zip

Discussion in 'Data Protection' started by ghia, Aug 3, 2014.

  1. ghia

    ghia Registered

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    Hi,

    Since a few weeks the downloaded backup.tar.gz is unreadable. The gz is ok, but the tar contains a problem.
    I use 7-zip v9.22 under Windows 7 pro. The tar file is visible when you open the archive.
    But when you enter there then there us an error 'Can't open file xxx as archive'
    Also Peazip detects an error.
    With WinRar I got some info about the problem:
    ! D:\backup.tar.gz: Unknown method in .\.spamassassin\bayes_toks
    ! D:\backup.tar.gz: sparse file is not supported
    ! D:\backup.tar.gz: The archive is corrupt
    Seems the mostly binary info of bayes_toks is not correct encoded and/or confuses the archive programs.

    As I think the SpamAssasin directory is not of great importance, how can I exclude it from the home directory backup?
    I have 3 websites on that reseller account on that server and all 3 backups have the same problem.

    cPanel Version 11.44.1 (build 7) on Operating system linux Kernel version 2.6.32-431.17.1.el6.x86_64
    cPanel Pro 1.0 (RC1)
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    Have you tried extracting the archive on the server itself using the traditional "tar" commands to rule out any issues with the extraction tools on your personal computer?

    Thank you.
     
  3. ghia

    ghia Registered

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    No, I did not and would not know how.
    I can upload the downloaded archive again to the server, but don't know how to get to its command interface, nor which command to enter. (I also don't have a Linux computer.)

    Before there were never be any problems to extract files with 7-zip. I have a backup from after the server move, dated may 17, which has no problems. Begin july, with a new home directory backup, I noticed the problem. I installed then the latest versions of Peazip and Winrar to no avail. Begin august, the problem persists and I posted on this forum.

    I don't know if 7-zip, Peazip and Winrar use the same algorithm to decode the tar, but all 3 are complaining that the archive is not readable or corrupt.
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    The reason it's important to test on the server is to determine if the package itself is actually damaged, or if it's an issue with the extraction tool you are using. Do you have root access to the server to test this? If not, please report this issue to your web hosting provider so they can investigate this on your behalf.

    Thank you.
     
  5. ghia

    ghia Registered

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    I will open a ticket for verifying that on the server the backup can be read.

    But should a backup not be portable and usable on other systems then the generating server?
     
  6. GoZen

    GoZen Member

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    Yes the backup should be portable and i never had issues with a .tar file on a local windows pc using winrar, maybe your file is actual not good.
     
  7. cPanelMichael

    cPanelMichael Forums Analyst
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  8. buckshot101

    buckshot101 Member

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    Having the same exact problem as ghia.

    I have a dedicated server with Host Gator and contacted them concerning this issue and here was their response:

    Have found can not open the backups in Winzip, 7zip, PeaZip, WinRar, and etc...

    It appears Host Gator is laying blame with Cpanel and for me to watch for update via this post.

    Corrupted backups do me no good. I am lost on figuring out how to resolve this issue.

    One of the sites having this issue I have been running weekly backups on since 2001 and never had issues opening the backups until a couple weeks ago. Have tried opening the backup on all my cpu's as well as friends and families and same result each time. So I have ruled out my pc's be the problem.
     
    #8 buckshot101, Aug 9, 2014
    Last edited: Aug 9, 2014
  9. cPanelMichael

    cPanelMichael Forums Analyst
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    Do you have root access to the server? If so, feel free to open a support ticket using the link in my signature so we can take a closer look. The previous poster never provided a ticket number to provide updates for.

    Thank you.
     
  10. buckshot101

    buckshot101 Member

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    Yes, I have root access. I will open a ticket.

    - - - Updated - - -

    Just tried to open a ticket but see that login is for a Cpanel store (I do not have a cpanel account as I have a dedicated server with HostGator which cpanel came already installed as they are managed) - only cpanel account I have is on this forum.

    Is there another way to open up a ticket?
     
  11. cPanelMichael

    cPanelMichael Forums Analyst
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  12. buckshot101

    buckshot101 Member

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    Thanks, was able to put one in.
     
  13. buckshot101

    buckshot101 Member

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    Forgot to mention yesterday that my ticket is cPanel tickets ID# 5335349.
     
  14. cPanelMichael

    cPanelMichael Forums Analyst
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    To update, internal case number 111853 is open to address an issue where sparse files are included in the backup archives, preventing Windows applications such as 7zip and WinRar from extracting the archive. Please monitor our change log for this case number to determine when a resolution has been published:

    cPanel - Change Log

    Thank you.
     
  15. campi11

    campi11 Registered

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    I have the same problem, please fix it fast because this function is necessary for me. Thank you.
     
  16. cPanelMichael

    cPanelMichael Forums Analyst
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    You can monitor our change log to know when a resolution has been released. There is currently no time frame available on when a resolution will be published.

    Thank you.
     
  17. bigglescdh

    bigglescdh Registered

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    Identical problem for me
    -cannot extract latest .tar backup of my website made using CPanel.
    Note that previous in May 2014, (and before on many occasions) has been fine.
    7Zip refuses, no error messages - WinRAR give error messages "sparse file is not supported", and "unknown method in ...dns_cache.db

    This with CPanel v11.44.1 (build 17), CPanel Pro 1.0 RC1. Web server (shared) is running linux on i686, php 5.4.29
    My machine is Windows 7 running WinRAR 5.11 (32bit) and 7zip920-x64

    Do hope you can fix this soon!
    Thanks
     
  18. woodp5

    woodp5 Member

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    Similar problem here ...

    Server: CENTOS 6.5 x86_64 hyper-v – WHM 11.44.1 (build 17)
    Local: Win 8.1, Tried both 7-zip920-64 and WinRAR 5.11-64

    7-Zip just aborts while WinRAR aborts with three error messages:

    - Unknown method in .\.spamassassin
    - sparse file not supported
    - The archive is corrupt

    I had filed a ticket with my host who blamed the 7-ZIP software, but judging from this thread, I suspect the issue is cPanel related.
     
  19. cPanelMichael

    cPanelMichael Forums Analyst
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    Please keep in mind that an internal case is open, but a resolution has not been released at this time. You can monitor our change log to know when a resolution has been released. There is currently no time frame available on when a resolution will be published.

    cPanel - Change Logs

    Thank you.
     
  20. babu65

    babu65 Member

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    Unzip backup problem

    Hi,
    in the last years I had made regular backup ( fullbackup or home end DB backup) of my domains through cPanel Backup wizard menu, so they was regularly unzip on my PC with Win 7 64 bit with Winrar or 7zip.
    Now unfortunately when I try to unzip my new backup I’ve errors so I can’t backup my domains.
    I’ve tried unzip the backup on Debian Ubuntu but I’ve similar problems.
    I’ve read the case 11853, about it, open on 09-04-2014 but at today I can’t find an available resolution of it.
    PLS any suggestion for have right backup of my domains?

    Many thanks in advance
     
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