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Re: booting btrfs

From: Vladimir 'φ-coder/phcoder' Serbinenko
Subject: Re: booting btrfs
Date: Mon, 14 Oct 2013 21:29:25 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20131005 Icedove/17.0.9

> So it seems that GRUB is using relative pathnames to the default subvolume.
This is not intentional. When this part of code was written there was no
set-default available at all so this couldn't be tested and I simply
followed the specification. It told to take root_tree and
root_dir_objectid from superblock then go to "default" directory. What
of this needs to be changed? Just remove "default" and make it part of
path? We would need to change grub-mkrelpath to match runtime behaviour.
Is there a way to detect that mountinfo gives garbage and somehow get
where the real root points?

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