[yocto] readonly rootfs - storing data in separate partition

[Belisko Marek]

On Mon, Feb 18, 2019 at 5:52 PM Marc Ferland <marc.ferland at gmail.com> wrote:

> On Mon, Feb 18, 2019 at 11:37 AM Belisko Marek <marek.belisko at gmail.com>
> wrote:
>
>> Hi,
>>
>> I plan to use readonly rootfs option and store some custom data in
>> separate partition (like hostname, wpa_supplicant.conf etc). I have wic
>> file which create rootfs + then rest is for data storage. I can adjust
>> various recipes to symlink to /data partition. My question is if there
>> exists some mechanism how to store some pieces in non-rootfs partition? I
>> know some projects which put those extra files to deploy dir and then by dd
>> create dummy storage nd put files there and finally create partition from
>> that. Thanks a log for any pointers.
>>
>>
>
> You could potentially use overlayfs to have a RO rootfs and a separate RW
> layer in another partition for example. I think linux-yocto also support
> AUFS.
>
This one seems promising:
https://github.com/cmhe/meta-readonly-rootfs-overlay
This is not exactly what I was looking for but I think it can be usable.
Anyone using this? Thanks.

>
> Good luck,
>
> Marc
>

/marek
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