/boot on Btrfs still not supported, main problem is anaconda and grubby

[Chris Murphy]

On Fri, Mar 20, 2015 at 7:20 AM, Josef Bacik <josef at toxicpanda.com> wrote:
> Cool so then we use grubby for these other cases and use the grub2
> stuff for the grub2 case which covers the majority of installs and
> lets us use btrfs for /boot.  Then as new features are added to grub2
> for btrfs we don't have to worry about some other package being
> updated, we just automatically get them when we update the package.
> I'll take a look at what needs to be done when I get back from
> vacation.  Thanks,

Using grub2-mkconfig instead of grubby on x86 was suggested and
rejected primarily on the basis that grub-mkconfig discards the
existing grub.cfg, which can contain user add/modified entries, and
generates a completely new one. Ergo, grubby and GRUB upstreams
fundamentally disagree on the fairly basic principle of whether the
grub.cfg should be modifiable outside of GRUB tools or regenerated
from scratch each time a kernel version or boot parameter change
happens.

And that's why Gene Czarcinski wrote patches for grubby, and AdamW did
a lot of testing of it.
https://bugzilla.redhat.com/show_bug.cgi?id=1094489

This is the most recent grubby patch
https://bugzilla.redhat.com/attachment.cgi?id=907052


I don't know if the grubby failure to fix missing initrd lines
https://bugzilla.redhat.com/show_bug.cgi?id=1200539

is related to the overall grubby failure to understand Btrfs
subvolumes (that Gene's patch addresses)
https://bugzilla.redhat.com/show_bug.cgi?id=864198




-- 
Chris Murphy