[yocto] Read-only file system with persistent storage

[Nikolay Dimitrov]

Hi Gary,

On 07/16/2015 02:36 PM, Gary Thomas wrote:
> I'd like to set up a system with a read-only root file system
> along with some persistent read-write storage.  What are the
> [best] options in Poky/Yocto for this?  Is there any support
> for some type of overlay file system?
>
> Thanks for any ideas/pointers

I remember that back in my automotive days, one of my teams had to use
Genivi's persistence component:

http://projects.genivi.org/persistence-management/

There are also git repositories over there. I can't comment on the code
quality and stability, but this component is part of the Genivi
reference platform (which technically doesn't mean anything), and
there's at least 1 vehicle from a major OEM which uses this component
on the roads. As usual, keep your eyes open for possible issues.

Kind regards,
Nikolay