[U-Boot] UBIFS Problems with U-boot 2018.1 & 4.14 Linux

[Richard Weinberger]

Otto,

Am Dienstag, 22. Mai 2018, 03:30:04 CEST schrieb Otto Blom:
> Hi Richard !
> 
> To summarize the observations from the last few days.
> 
> * Linux 4.9 & U-boot 2018 behave the same when attempting to read from
> a ubifs file system
> * Whenever Linux 4.14 writes to a ubifs there is some form of
> incompatibility introduced
> causing assorted errors when the file system is read in Linux 4.9 or
> U-boot. However
> the files can still be read in Linux 4.14.
> 
> This lead me to suspect a problem with the OOB data. So I copied over
> a 16MB textfile to
> a freshly minted no-compression ubifs partition (running 4.14) and ran
> a nanddump both from
> Linux 4.9 and 4.14 and the contents are different - Bit errors are
> present in the 4.9-dump..

This smells like a problem on MTD/NAND-Level.
Decompression might fail because bits changes but didn't get fixed by your driver.

Thanks,
//richard