Re: mtd errors on boot OpenRD "ultimate"

[Rick Thomas <rbthomas@pobox.com>]

Hi again,

Some googling on the subject offers a suggestion that is attractive, even if not easily verified:

The suggestion is that Uboot and Linux do different and incompatible checksums on the write-blocks in the NAND flash.  So you either get messages in your syslog from Linux saying it doesn't like the Uboot-style checksums, or you get messages from Uboot saying it doesn't like the Linux-style checksums.  The Uboot messages won't show up in syslog, but they will pollute your serial console during boot-up.  Pay your money and take your pick.  Both are unpleasant.

Does anybody out there have true and certain knowledge if this suggestion is even close?

If so, would the new Debian Uboot package have Linux compatible checksums?

Rick


On Aug 6, 2011, at 6:02 PM, Philippe Clérié wrote:

> When I first encountered those messages I was told that they were completely 
> harmless and have always been there. You'd best ignore them.
> 
> On Saturday 06 August 2011 13:31:24 Rick Thomas wrote:
>> For a few seconds during the boot process on my OpenRD "ultimate",
>> running Debian Squeeze, I get hundreds of messages in syslog like this:
>> 
>> Buffer I/O error on device mtdblock0, logical block 0
>> Buffer I/O error on device mtdblock0, logical block 8
>> end_request: I/O error, dev mtdblock0, sector 0
>> end_request: I/O error, dev mtdblock0, sector 128
>> end_request: I/O error, dev mtdblock0, sector 16
>> end_request: I/O error, dev mtdblock0, sector 64
>> end_request: I/O error, dev mtdblock0, sector 8
>> loop: module loaded
>> uncorrectable error :
>> 
>> 
>> Does anybody know what causes them?  Is there anything I can (or
>> should) do about them?
>> 
>> 
>> Thanks!
>> 
>> Rick