JFFS2 errors - are these normal?

[Ricard Wanderlof]

On Tue, 18 Dec 2007, Ramesh wrote:

> Hi,
>
> I am using linux 2.6.19 and ST micro NAND chip (256M) on a PowerPC
> platform. After booting the OS, we install firmware on to the flash.
> These firmware images are RPM packages. Once some packages are
> installed, we start getting some ECC errors. I guess that's fine but
> after a few more RPM installs, the errors seem more serious. Here's a
> sample:

You shouldn't be getting ECC errors that quickly, on a chip like that I 
would expect it would take many months before you'd see an ECC error if 
ever.

My guess without knowing more would be that there is a hardware problem 
causing the communication with the nand chip to fail ever so often.

> The jffs2 image is created with the following flags: -e 0x20000 -s
> 0x1000 -b -v -p -n
> Then I use sumtool with -e 0x20000 -b -p.

If the device mounts properly then there shouldn't be much wrong with the 
image.

/Ricard
--
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30