[maemo-developers] [maemo-developers] Re: Span filesystem across both SD cards?

[From: sebastian maemo]

Thank you, Marious. That encourages me a lot. Because now I've copied the
whole system "a la Fanoush", that is: via GNU tar. So I hope there's not
going be any problem of preserved links or similar details.

Now I was blocked because I didn't have got a usable initfs-flasher in order
to dual-boot. Maybe the solution is just to symlink. Your help here could be
precious...

Yes I created ln -s /media/mmc2/usr /usr, and then renamed original /usr to
/usr-old. I don't mind removing it. So the idea is correct: /usr ->
/media/mmc2/usr

Now the problem is to mount the mmc2 before the system needs it. I've
mounted at minircS, just before the line that says mount_devpts (line number
98). Would it suffice? How do I know? I've tried to put the line much above,
but the script didn't recognized it. Maybe to early.

Hope I success. In that case, I'll write a complete report and blog it, for
future users.

Salut.
Sebas.

2007/2/2, Marius Gedminas <marius at pov.lt>:
>
> On Fri, Feb 02, 2007 at 06:29:22AM +0100, sebastian maemo wrote:
> > When I bought N80 phone, I found a very useful and logic feature: when
> you
> > install a new app, the application manager asks you whether you want it
> > installed over your tiny phone memory, or over your large GB memory
> card.
> >
> > For don't-know-what-reason Nokia failed to make this feature available
> on
> > his 770. They just let me create a 64M swap file that helps, but not
> that
> > much.
>
> I would guess the reason is that it's not that simple to do this in
> a Linux system.
>
> I agree that it would be useful.  So would a thousand other features.
>
> > So here I am, trying to make things work. I've learned how to create
> > partitions with sfdisk (not so friendly as fdisk), format them with
> > mkfs.ext2 (that was easy), and mount and unmount them at startup and
> > shutdown via init.d scripts (that was the worst one).
> >
> > And now that I've learned all that much, I created the wrong symlinks: I
> > cp'ed /usr to the MMC, and then made the wrong link: ln -s
> /media/mmc2/usr
> > /usr. Yes, now I know it should be the reverse way, but do not
> understand
> > why.
>
> No, your command is correct.  Other things might be wrong:
>
>   - cp doesn't preserve file permissions, unless you ask for it
>     explicitly.  You may have ended up with all the programs in /usr/bin
>     not executable
>
>   - If you did not remove the /usr directory before creating the
>     symlink, you've ended up with a symlink /usr/usr -> /media/mmc2/usr
>     This should not have prevented it from booting, though.
>
>   - I do not know if /media/mmc2 is mounted early enough before the boot
>     sequence needed to access files in /usr.
>
> Marius Gedminas
> --
> "Linux was made by foreign terrorists to take money from true US companies
> like Microsoft." -Some AOL'er.
> "To this end we dedicate ourselves..." -Don
> (From the sig of "Don" <don at cs.byu.edu>)
>
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.1 (GNU/Linux)
>
> iD8DBQFFw0HykVdEXeem148RAj7KAJ4ltfro5hUmIcXVyHRGOCemLFRSBgCfXaQG
> jWbk3RPJ2yQTieEaWS0onQo=
> =/hpd
> -----END PGP SIGNATURE-----
>
>
> _______________________________________________
> maemo-developers mailing list
> maemo-developers at maemo.org
> https://maemo.org/mailman/listinfo/maemo-developers
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.maemo.org/pipermail/maemo-developers/attachments/20070202/a565211d/attachment.htm