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[ts-7000] Re: Dumb-ass Yahboo goups : Yaffs from 2.6 incompatible with 2

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Subject: [ts-7000] Re: Dumb-ass Yahboo goups : Yaffs from 2.6 incompatible with 2.4
From: "j.chitte" <>
Date: Thu, 29 May 2008 16:41:13 -0000
--- In  "j.chitte" <> wrote:
>
> new topic ??
>

A finally conviced this dumb-assed group software to create a new 
topic when I click "Start topic".

now where were we ??



--- In  "bsmuck2000" <> wrote:
>
> (Hopefully this is a new thread this time)

Well, it isn't yet ...

>
> Hello,
>
> We are working at transitioning our ts7260-based system to using 
the 2.6
> kernel (right now the one supplied by Technologics. One problem that
> I'm running into is that when I boot to 2.6, the yaffs2 file system 
on

Was the ts-7260 delivered with YAFFS or YAFFS2? IIRC, YAFFS2 was used
only for the larger flash sizes (2k page sizes).

> the flash is not visible. I can mount it fine, but nothing is there.

Anything in the kernel log after the mount or attempted read?

> If I rewrite the filesystem while in 2.6, it works fine, but when I 
boot
> back into 2.4, it again shows a blank filesystem.
>
> Is anyone aware of this incompatibility and how to fix it?

Check the YAFFS2 build options on the 2.4 config, and make sure your
2.6 version is configured the same or at least backwards compatible.

Especially look at YAFFS_AUTO_YAFFS2, YAFFS_YAFFS2,
YAFFS_DISABLE_WIDE_TNODES, and their help text in Kconfig. If you are
mixing yaffs and yaffs2, these config options can help make this
transparent.

You can also turn on some debugging options in yaffs_fs.c (need to
recompile).

>
> For the transition time, it is essential that we be able to access 
the
> yaffs filesystem from both 2.4 and 2.6.
>
> Thanks,
>
> Brian
>

Regards, .......... Charlie




        Thu May 29, 2008 8:52 pm 

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