[ts-7000] Re: running root filesystem from ramdisk

["Yan Seiner" <>]

--- In  "Hamish Avery" <> wrote:
>
> > You can try looking at OpenWrt - http://www.openwrt.org - they ship a
> > squashfs image that can be updated to a small jffs2 partition.
> > 
> > I'm not really sure how that's done.  squashfs is read-only by
> > definition; to change it you have to rebuild a new image and reflash
> > the board.  OpenWrt uses some sort of symlink magic to allow 
> > 'updates'.
> > 
> > I'm not sure if that's what you're looking for, though.  Do you need
> > to update any arbitrary file on the system? Or just a few?
> > 
> 
> Hi Yan,
> 
> Thanks for the idea.  What I am concerned about is if we move to add
> features that require a lot more floating point math then we'll have
> to move to get the cruch core going - currently I use a soft-float
> kernel and libraries.  In that case, we'd need to update all the
> libraries and busybox etc.  
> 

I see.  The big attraction of the 7300 for us is the SD bootup...  We
figure it's cheaper to ship our customers a new SD card with a new
system on it than to do what you're trying to do. And a lot less
chance for a hosed system.

Then again, our produts are semi-custom; each one is a bit different
and we only sell a few hundred a year, so we're not talking about a
huge undertaking - and the cost of failure can be high.

Thus our update policy is, "ship a new EEPROM (current) or new SD card
(future)."  :-)

--Yan




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