ubi cloning

[Baruch Siach]

Hi Erez,

On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
> i need to clone a nand flash. which has ubifs on it
> 
> doing 'dd' didn't work as the source and dest have different bad sectors.

dd is not the way to go with raw NAND flash access; it's not aware of bad 
blocks.

> is there an easy way to clone a ubifs nand-flash ?

You may be able get a working system using nanddump/nandwrite (see 
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024, but read 
the whole thread). Generally, tough, this is not what you want to do with 
UBI/UBIFS. You should use ubiformat on the target, and copy the content with 
tar. See http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat.

baruch

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