Re: [OE-core] [PATCH] initramfs-framework: Add overlayroot module

[Vyacheslav Yurkov <uvv.mail@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1152 bytes --]

On 26.01.2022 19:09, Alejandro Hernandez Samaniego wrote:
> Oops! completely forgot!, I'll add it.
>
> This is loosely based on the overlay-etc.bbclass the difference is that
> the class only works for overlaying /etc and it doesnt require an
> initramfs, but, while its possible to tinker it in such a way that it
> overlays /, its not possible to access the original (RO) / after booting the
> system, this is the reason  why this has to be done from initramfs and why
> this doesnt patch the overlay-etc.bbclass instead.
>
> I believe Ubuntu has this feature, coming from the cloud-initramfs
> package, functionally it should be similar although no code was borrowed
> from there.
>
> I'll add a note about the overlay-etc class though.

I missed this part when I answered to your first email this morning. I 
generally against expanding the scope of overlayfs (i.e. using it for 
the whole / ), because it creates a bigger migration effort when you 
need to update the files on a persistent partition. I see the only 
difference in your code is that you provide access to original lower 
layer fs. Why would you want to do that?

Thanks,
Vyacheslav

[-- Attachment #2: Type: text/html, Size: 1574 bytes --]