Re: grub-install BIOS vs UEFI

[Chris Murphy]

On Dec 20, 2012, at 9:53 AM, Andrey Borzenkov <address@hidden> wrote:

> В Mon, 17 Dec 2012 20:01:45 -0700
> Chris Murphy <address@hidden> пишет:
>> 
>> What are the chances of getting grub-install to automatically put grub.efi 
>> in the ESP of all RAID1 member disks? 
>> 
> 
> I am still not sure whether RAID1 for ESP is good idea. ESP is
> writable while you are in firmware; there is no way to prevent it
> (short of adding MD driver into firmware). Two independent ESP is more
> robust and can be achieved already on top of grub-install. 

When I said "put grub.efi in the ESP of all RAID member disks" I mean that each 
disk in the array has its own ESP, and a separate Linux RAID partition.



> 
>> And then longer term, for btrfs, for all raid1, raid10, raid5, and raid6 
>> disks. Perhaps screwy to have a RAID6 boot disk. But not inconceivable to 
>> have a 3 disk RAID1 with triple mirror, or even just a four disk raid1.
>> 
> 
> Same as above - having individual ESP on each disk can be achieved
> already relatively easy as wrapper around grub-install. Integration in
> grub-install could be implemented in form of multiple --efi-directory
> options (or making option to take multiple values, or adding
> --efi-mirror-dorectory ... ).

No what I'm asking for is for grub-install to automatically determine the 
member disks for an array and install multiple grub.efi's in each disk's ESP. 
It already does this for a single disk situation without having to specify a 
device, I don't want to have to specify multiple locations manually. It should 
be automatic.

Chris Murphy