Qi and ext4

[Andy Green]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Somebody in the thread at some point said:
| On Monday 23 February 2009 00:15:36 you wrote:
|> Somebody in the thread at some point said:
|> ext4 is becoming "real" now so support would be good, let us know what
|> you find.
|
| If you want to use ext4 in "compatible" mode - than yes ext2 parser is
enough.
| If you want to use extents -
http://en.wikipedia.org/wiki/Extent_(file_systems)
| (which was main reason I changed from ext3) you're loosing ext2/3
| compatibility. So new parser will be required.

I guess the incompatibility is actually really simple, like different
structure size to allow for the reservation action.  But it sounds like
a PITA to figure out what changed from cold.  The ext2 parsing code is
actually very simple in Qi / U-Boot, it's read-only for example.

|> A better way to come at that is use the noboot-GTA02 thing
|>
|> http://wiki.openmoko.org/wiki/Qi#Files
|>
|> on your normal partition to force it skipped by Qi.  Then it will create
|> the correct root= on the second one automatically.
|
| It will if Qi can read second partition (currently it can't).

Right, I get your point now.

- -Andy
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org

iEYEARECAAYFAkmh9QwACgkQOjLpvpq7dMrzCQCeJI8nvtX4jm0l/QdCYWCOkkbO
n6IAn1pHakWKRZRTfuMruaSje2BjwJIV
=bcKT
-----END PGP SIGNATURE-----