[Olpc-france] [support-gang] [Olpc-mg] Howto update 100 Xos!

[Guylhem Aznar]

Hello

Multicast nand update work just great. I've been using it since
yesterday to perform various tests.

What you can do:
 - prepare your master XO (obviously !)
 - reboot and push esc key
 - run "nb-clone" on the master and see which channel it picks (ex:6)
 - run "nb6" on each target XO

Maybe a custom olpc.fth script performing both the firmware update and
going into nb6 could be prepared on a USB key : this way you would
just have to plug the key into each target laptop, one by one (until
they have booted and are starting to receive- no need to wait as soon
as it has booted) instead of doing manual manipulations

But just a quick suggestion  : make sure the master you use does not
contain hardcoded informations by mistake (ex: if you removed some
links, added ssh keys etc) -it will just copy them verbatim on each
other XO

Happened to me with network addresses. so I suggest you test with some
laptops first :-)

Something I don't know yet (I may test that in the next days), is how
security will play with all that : I mean, if the master image you are
nandblasting is based on a signed image but has been modified, it may
be considered unsigned and refuse to boot. In this case, you would
have to add developer key retrival/security disable to your usb key
olpc.fth until your Malgasian has been signed.

-- 
Dr. Guylhem Aznar, MD PhD

Unité d'Analyse Médico-Économique
Service de Santé Publique et d'Économie de la Santé
Pôle SPSSR
CHU de Fort de France
BP 632
97261 Fort De France Cedex
Martinique, France

Tel : 05 96 55 23 47
Fax : 05 96 75 84 57