ts-7000
[Top] [All Lists]

[ts-7000] Re: Yaffs from 2.6 incompatible with 2.4

To:
Subject: [ts-7000] Re: Yaffs from 2.6 incompatible with 2.4
From: "charliem_1216" <>
Date: Thu, 29 May 2008 16:22:48 -0000
--- 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



------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/ts-7000/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/ts-7000/join
    (Yahoo! ID required)

<*> To change settings via email:
     
    

<*> To unsubscribe from this group, send an email to:
    

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/

<Prev in Thread] Current Thread [Next in Thread>
Admin

Disclaimer: Neither Andrew Taylor nor the University of NSW School of Computer and Engineering take any responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU