[yocto] [meta-raspberrypi] Read-Only RootFS is not read only

[Paul Eggleton]

Hi Rich,

On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
> I am trying to build for Raspberry Pi including "read-only-rootfs" in
> my image features. My aim is to have my SD Card read-only and at some
> point add a read-write overlay to certain directories. This should
> enable my system to boot fresh each time, and have some persistent
> storage for user files etc.
> 
> However, after building my image I can SSH into the system and issue
> "touch test" to create a file in my home directory, then after a
> reboot it is still there. That isn't very read-only :)
> 
> Am I missing something, or is this working incorrectly?

It sounds like it's working incorrectly. Since meta-raspberrypi constructs the 
SD card image using its own custom class I wonder if it has anything to do 
with that. Andrei, do you know anything about this?

BTW, are you using sysvinit or systemd in this image?

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre