Re: Filesystem and files getting corrupted

Daniel Hilst Selli <danielhilst@xxxxxxxxx> · Sun, 07 Jul 2013 22:13:59 +0000



    On 07/04/2013 12:24 AM, Peter Teoh
      wrote:

    
    any kernel debugging always start with dmesg output,
      please provide a snapshot of that.   (preferably posting full
      listing at pastebin.com).

      
      On Tue, Jun 25, 2013 at 4:08 AM, Daniel
        Hilst Selli <danielhilst@xxxxxxxxx>
        wrote:

        I'm working
          on an embedded project based on var-som-am35 from TI. [1]

          
          I experiencing a lot of corruption from files and even the
          entire

          filesystem... is there any guide on how debug filesystems
          corruption?

          
          We already tryied vfat and ext3 fs.. changed media, changed
          machines...

          The filesystem runs on mmc card, or on usb flash drive...
          There is a

          java aplication running on top of this filesystem, which uses
          JMS, that

          is very I/O agressive..

          
          Cheers,

          
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      -- 

      Regards,

      Peter Teoh
    
    Was a hardware problem... 

    dmesg won't show anything .. We know that the file get corrupted
    because why try to exctract the jar file and get an error like (not
    a valid zip/jar file).. 

    
    Since we use SoMs, we test the same module(the little board) on
    another hardware (the official development kit) and it works without
    problems.

    
    Since is not broken, but out of specification.. it works for some
    time then starts to do bad things...

    
    I enabled mmc debug, got a lot of output but no error.. bad CRC or
    something like that.. I think that configuration (since is for
    embedded system) is too silent..

    
    Thanks 

    Cheers!

  
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