UBIFS recovery fails in barebox while Linux suceeds

[Sascha Hauer]

On Wed, Mar 02, 2016 at 05:19:08PM +0100, Alexander Stein wrote:
> Hi,
> 
> in case a UBIFS needs recovery (unclean write or whatever on NOR
> flash) it is possible that barebox fails to do so while Linux suceeds.
> The main cause, IMHO, is that Linux takes max_write_size into account
> (starting with commit 2765df7da540687c4d57ca840182122f074c5b9c "UBIFS:
> use max_write_size during recovery") while barebox doesn't. Apparently
> is_last_write (fs/ubifs/recovery.c) results differently due to that
> fact which explains why recovery progress differently. I don't know
> which linux version the ubifs code in barebox is taken from but I
> guess this needs to be updated. Are there any plans?

The barebox UBIFS code is taken from U-Boot 2013.07 which is taken from
Linux-2.6.29-rc6, so indeed the code is quite old. U-Boot has updated
UBIFS support to Linux-4.2. The question is if we update UBIFS from
U-Boot or directly from the Kernel, I have no idea which way is easier.
Currently there are no plans to update UBIFS, but of course you are
invited to create them ;)

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |