Hi Stefan,
On 09/13/2011 09:39 AM, Stefan Roese wrote:
Hi Holger,
On Monday 12 September 2011 19:16:33 Holger Brunck wrote:
I have seen in mainline kernel this fix in the ubi layer:
commit b86a2c56e512f46d140a4bcb4e35e8a7d4a99a4b Author: Artem Bityutskiy Artem.Bityutskiy@nokia.com Date: Sun May 24 14:13:34 2009 +0300
UBI: do not switch to R/O mode on read errors This patch improves UBI errors handling. ATM UBI switches to R/O mode when the WL worker fails to read the source PEB. This means that the upper layers (e.g., UBIFS) has no chances to unmap the erroneous PEB and fix the error. This patch changes this behaviour and makes UBI put PEBs like this into a separate RB-tree, thus preventing the WL worker from hitting the same read errors again and again.[...]
And this sounds like the problem I see in u-boot.
Yes, very likely.
But this patch is not easy to port onto u-boot because previously undergoing changes in the kernels ubi layer...
Correct. UBI has undergone many changes since the integration into U-Boot back in the end of 2008 (nearly 3 years ago now). Perhaps the best would be to re- synch with the latest Linux UBI version. But this sounds like quite a lot of work as well...
if found a way to port only this patch. But I had to do some changes to it. E.g. exchange the constants for errors with numeric values as present in u-boots ubi version. And remove setting of the constants (MOVE_TARGET_RD_ERR) values which are not evaluated in u-boots ubi version. This fixes my problem. Should I post this patch?
Regards Holger