ubi cloning

[Erez D]

On Mon, May 12, 2014 at 12:28 PM, Baruch Siach <baruch at tkos.co.il> wrote:

> Hi Erez,
>
> On Mon, May 12, 2014 at 12:14:14PM +0300, Erez D wrote:
> > On Mon, May 12, 2014 at 12:05 PM, Baruch Siach <baruch at tkos.co.il>
> wrote:
> > > 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
> >
> > will tar preserve uid/gid hard links, special files, /dev
>
> Yes, by default.
>
> > extended attr etc ?
>
> Yes. Use --xattrs.
>
> baruch
>

thanks, i'll try that.

can I ubiformat + untar from u-boot ?

>
> --
>      http://baruch.siach.name/blog/                  ~. .~   Tk Open
> Systems
> =}------------------------------------------------ooO--U--Ooo------------{=
>    - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.cs.huji.ac.il/pipermail/linux-il/attachments/20140512/4b983a6d/attachment.html>