Support writing boot and root partition's UUIDs to /etc/fstab
According to https://wiki.postmarketos.org/wiki/Fstab we don't use fstab mainly because we can't know the UUID of the boot and root partition in advance. This makes sense when we didn't have an on-device installer, but with such an installer we totally can get those UUIDs.
It would be great if the installer wrote those to /etc/fstab and enabled the localmount service so the mounting process is more standard like most distributions on the desktop.
We'd still need to support the non-on-device installer use-case, but for the cases where the installer is used it makes the initramfs a lot simpler.
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I'm planning to use the UUIDs in the future, with and without the on-device installer.
You're right, it would probably make sense if the on-device installer directly writes /etc/fstab when it's done with installing.
I had another concept in pmaports#1531, that pmbootstrap / on-device-installer would write a /etc/bootinfo file, from which we generate the /etc/fstab file and also put the UUIDs into grub-early.cfg for UEFI devices. But I'm reconsidering it now, might as well just use /etc/fstab instead of duplicating the information into a custom /etc/bootinfo. I'll try to just implement it with /etc/fstab.
By Oliver Smith on 2022-08-18T20:46:53
Edited by Ghost User-
So this gets discussed in more detail in pmaports#1531. We'll probably need to generate /etc/fstab and run mkinitfs/boot-deploy and maybe do some more things. Let's leave this issue open until it's implemented in ondev2.
If maybe somebody from another distro is reading along: I plan to make all postmarketOS specific things as hooks so they can be disabled / replaced for other distros as needed.
By Oliver Smith on 2022-10-20T08:56:46