[syslinux] extlinux and btrfs

[Gene Cumm]

On Dec 16, 2013 7:22 PM, "Gene Czarcinski" <gczarcinski at gmail.com> wrote:
>
> I am a relative newcomer to using extlinux.  I am running Fedora 20 which
means I am using syslinux 4.05.  When I noticied that all of your
documentation said that booting off ext234 and btrfs was supported, I gave
it a try.  Indeed, this does work with the boot files and the extlinux
directory installed into the btrfs (root) volume.
>
> Has any thought been given to supporting supporting /boot/extlinux being
on a btrfs subvolume?  This does mean that there is an extra level (the
subvol) which looks a lot like a directory.

I'd recommend the precompiled version 4.07 binaries from kernel.org as it
should have this resolved.

> Since booting with the btrfs used works, I thought that it might be only
a matter of configuration.  To test this, I installed /boot into a btrfs
subvolume.  Post install, I then edited extlinx.conf to add the prefix
/boot1/ to the /vmlinuz and /initramfs parameters. The installation
included a mount point for the btrfs volume so I then ran:
>     /sbin/extlinux --install  /btrfsvol/boot1/extlinux and it responded
with device on /dev/vda1.
>
> This looked like it should work but it did not.  Instead I got a lot of
"found" messages.
>
> Comments?  Any ideas?
>
> Gene

--Gene