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
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