ext2 for read-only file system on UBI

[Hamish Moffatt]

On Mon, May 19, 2008 at 10:08:24AM +0300, Artem Bityutskiy wrote:
> On Mon, 2008-05-19 at 16:56 +1000, Hamish Moffatt wrote:
> > > No, should be fine. Well, you'll still have WL across whole NAND chip,
> > > yes. You'll still have bit-flip handling.
> > 
> > So, is there a benefit to Nancy's proposed ubi block layer as opposed to
> > gluebi + mtdblock?
> > ( http://lists.infradead.org/pipermail/linux-mtd/2008-May/021609.html )
> 
> Yes, her layer is assumed to be R/W block device.
> 
> You could want to glance here as well:
> 
> http://www.linux-mtd.infradead.org/faq/general.html#L_ext2_mtd
> http://www.linux-mtd.infradead.org/faq/ubi.html#L_ext2_over_ubi

Thanks for the links. So, read-write with mtdblock is dangerous
(regardless of UBI) because it must erase and rewrite a whole block,
right? Proposed ubiblk (linked from above) would use UBI ops to make the
update operation safe.

Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>