[question]MTD:unstable bit issues?

[Thomas.Betker at rohde-schwarz.com]

Hello Jia:

> ----------------------------------------------------- 
> 2)a 4k bytes hole with all 0 in the flash file.
> -----------------------------------------------------
> -original-file DD AF C8 EE 57 EB 84 CE A1 7F B1 38 E7 22 51 2F
> -    94 AE 77 5B 48 EA 61 8C 09 BB C5 74 6E B1 87 D2 
> -    A9 32 8D 2A E7 7F D2 C3 DB 1A 92 E7 66 7C B8 4E 
> ......
> 
> +file-in-flash 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> +    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
> +    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
> ......
> -----------------------------------------------------

We have also seen this "4k zeros" issue for some time. I never found out 
was was happening because the issue was suddenly no longer reproducible. 
:-(

In our case, though, we didn't have NAND flash, but JFFF2 with serial NOR 
flash. So I would guess that this is not a NAND problem.

Which file system do you run? Is it JFFS2?

Best regards,
Thomas