Re: [RFC] read-only filesystem support for NAND flash devices

Josh Boyer
2006-05-10T11:01:10Z

On 5/10/06, Vitaly Wool <vwool@ru.mvista.com> wrote:

> As a filesystem is read-only, wear-out can't occur during the normal
> use, only on root filesystem upgrade. Therefore writing it using a tool
> like nandwrite that bypasses bad blocks seems to be enough, and the only
> thing needed is either an in-MTD layer that makes a partition look as if
> there's no babd blocks, or similar means within a filesystem.

Not quite the case. You need bad block skipping, yes. But NAND can
get bit flips in good blocks still. How do you deal with that? You
can't leave the block in that state forever because it will continue
to get bit flips and then your data will be unusable.

josh