On Tue, Sep 25, 2007 at 09:26:51AM -0400, ian@brightstareng.com wrote:
> On Tuesday 25 September 2007 03:56, Jonathan McDowell wrote:
> > On Mon, Sep 24, 2007 at 10:07:35AM -0400, ian@brightstareng.com wrote:
> > > On Sunday 23 September 2007 17:15, Jonathan McDowell wrote:
> > > > This is just a minor addition; the trace message for when yaffs
> > > > marks a block bad doesn't have a newline on the end which causes
> > > > output like:
> > > >
> > > > nand_erase: attempt to erase a bad block at page 0x000223e0
> > >
> > > This doesn't look right - yaffs should not be erasing bad-blocks.
> > > If the block just turned bad AND it got marked bad in MTD then
> > > this might happen - but i don't think that's likely, and most MTD
> > > setups don't have dynamic (mtd) bad-block-list update.  This is
> > > probably an indicator of some other issue, perhaps not reading the
> > > true blockState during initial scan.
> >
> > It appears to give the same errors every time the FS is mounted, so
> > something does seem to be going wrong. For the moment I've dropped
> > back to JFFS2 which is working fine on the same device.
> 
> What version of kernel/mtd do you have and what have to set for Yaffs
> config options?  Which NAND type do you have, large, small page?  Is
> the NAND i/o managed by s/w (MTD) or by a h/w controller perhaps with
> ECC logic?

Vanilla 2.6.23-rc7 kernel

CONFIG_YAFFS_FS=y
CONFIG_YAFFS_YAFFS1=y
# CONFIG_YAFFS_9BYTE_TAGS is not set
# CONFIG_YAFFS_DOES_ECC is not set
CONFIG_YAFFS_YAFFS2=y
CONFIG_YAFFS_AUTO_YAFFS2=y
# CONFIG_YAFFS_DISABLE_LAZY_LOAD is not set
CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS=10
# CONFIG_YAFFS_DISABLE_WIDE_TNODES is not set
# CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED is not set
CONFIG_YAFFS_SHORT_NAMES_IN_RAM=y

Small page NAND (3 * 64MB Samsung K9F1208U0M on a Balloon2 board)

NAND I/O by software.

http://balloonboard.org/~noodles/2.6.23-rc7-r1/

has the actual kernel, config and patches to vanilla that are in use.

J.

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