The next GRUB release (grub-2.04) includes my patch to add support for zstd compressed BtrFS filesystems, which should solve one of the major pain points of Zstd BtrFS compression.
A temporary work around in the meantime, I've used `chattr +C` on the directories I want to be exempt from zstd compression, so that grub can read those files.
A temporary work around in the meantime, I've used `chattr +C` on the directories I want to be exempt from zstd compression, so that grub can read those files.