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From: Paul Eggleton <paul.eggleton@linux.intel.com>
To: Rich Bayliss <richbayliss@gmail.com>, Andrei Gherzan <andrei@gherzan.ro>
Date: Fri, 02 Aug 2013 13:47:07 +0100
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Subject: Re: [meta-raspberrypi] Read-Only RootFS is not read only
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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