Re: Menu for booting BTRFS snapshots

[Andrei Borzenkov]

03.03.2017 00:40, Robert LeBlanc пишет:
> I'm trying to add some menuentry items to move between btrfs
> snapshots. I've added the following in the non-snapshot
> /etc/grub.d/40_custom.
> 
> menuentry 'RXE Snapshot' {
>        load_env -f /snaps/rxe-boot/grub2/grubenv
>        configfile /snaps/rxe-boot/grub2/grub.cfg
> }
> 
> It loads the config for my RXE snapshot, but in doesn't select the
> default menuentry as specified in the snapshot's grubenv. This makes

What is exact "default" value in loaded grubenv?

> it so that it won't boot automatically into a snapshot kernel (I
> created a 09_header file to add a noop menuentry that tells me I'm
> using the RXE snapshot config and that is what is selected). It
> doesn't matter if load_env is before or after configfile. Other than
> this, it works as expected.
> 
> I don't think I can use chainload because it is a 'directory' on the
> btrfs file system.
> 
> Any ideas on how to accomplish what I want?
> 

You can load other grub image directly without chainloading.