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Fedora boot error after changing btrfs root subvolume name (lemmy.one)

submitted 9 months ago by [email protected] to c/[email protected]

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Title says it all. I changed my btrfs subvol names so I could use timeshift to manage my snapshots, after regenerating the initramfs and editing grub to point to the new subvol names all was fine however after I got a kernel upgrade recently, the latest grub entry for the kernel specifies the old subvol name, resulting in a failed boot. I dont know grub well enough to know what options to add to /etc/default/grub, or even if thats where I need to add it. After editing the entry manually it boots perfectly fine so theres my question. Is there a grub config option to specify the name for a subvolume to boot? I'd rather not manually edit grub.cfg every time theres a kernel update lol.

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[–] [email protected] 1 points 9 months ago (1 children)

Thank you man, I dont understand much of the syntax (like at all) but i figured if I just change the subvol from the variable to the name of my root it would work, and it did. Jank as fuck but hey, its my system aha. Appreciate you man

[–] [email protected] 2 points 9 months ago

It's just the basic posix shell syntax. It just looks weird because they are using lots of library functions and in-place substitutions. also apparently the function, to translate a system path to something grub will understand, is an ELF binary 0_o