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Date: Mon, 15 May 2006 08:15:56 -0700 (PDT)
From: syed khader <khader_s_s@yahoo.com>
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Subject: CRC errors when continuous fseek/fputs on JFFS2
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Hi,
   I am finding this strange problem.
I am running the following piece of code :

int main()
{
   FILE *fp;
   int i;
   fp = fopen("/var/mnt/testfile","w");
   for(i =0 ; i < 100000 ; i++)
   {
   fputs("xxxx", fp);
   fseek(fp, -4, SEEK_CUR);
   fputs("xx", fp);
  }
   fclose(fp);
}

  JFFS2 is mounted on /var/mnt. While the program is
running I am getting CRC errors like this:

Data CRC 6c48916e != calculated CRC 11ebde1b for node
at 000e0a68
  
   If  I am not doing fseek above and just add writing
to file in the loop I dont see any CRC errors.
   Pleae let me know what is happening here. Is JFFS2
running out of buffers or something?
   BTW I am using uclinux2.4.24 JFFS2.2 on a ARM7
board

Regards
Syed




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