On 01/02/18 10:07, Mone wrote:
> I tried with a new snapshot and it works very well. Alongside that, I am
> curious and would like to learn about the BBB conversion from ext4 to
> flash filesystem. Are there any documentation/manual online that could
> explain/hint/guide through the filesystem  conversion from ext4 to flash
> filesystem like btrfs?

It's worth pointing out that btrfs is not a flash filesystem, it needs a
FTL (Flash Transition Layer) to do wear levelling on a NAND flash the
same as EXT4 does.

Your biggest hurdle is the fact that U-Boot does not understand btrfs,
so you'll need a /boot partition formatted EXT4.  Not sure that this is
likely to change, as porting btrfs to U-Boot could be a major
undertaking as it's much more complex.

BTRFS environment file storage, once a filesystem driver is ported,
should be an easy undertaking… least I didn't find getting U-Boot to
support EXT4 for environment file storage particularly hard as there was
an example for FAT as a starting point.
-- 
Stuart Longland (aka Redhatter, VK4MSL)

I haven't lost my mind...
  ...it's backed up on a tape somewhere.

-- 
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