EFI/ZFS Update: successful tests, need more complex vdevs

[Slawa Olhovchenkov]

On Fri, Jan 15, 2016 at 12:22:27PM +0000, Steven Hartland wrote:

> On 15/01/2016 11:51, Renato Botelho wrote:
> >> On Jan 15, 2016, at 00:41, Steven Hartland <killing at multiplay.co.uk> wrote:
> >>
> >> Just wanted to let everyone know that I just finished committing these changes to the tree.
> >>
> >> Huge thanks to Eric's for his work on this, as well as everyone else who contributed.
> >>
> >> I've set the target for MFC of 2 weeks, so I hope to be able to get this into stable/10 before the 10.3 slush, so if you're interested in this change please test a head build > r294068 ASAP.
> > Great work, thanks!
> >
> > Is there a way to move a installed ZFS system to EFI?
> 
> All EFI needs is an valid EFI partition on a GPT disk and the updated 
> loader.efi so if your devices is GPT based and you have space for an 
> extra 800k partition then yes.
> 
> The following should be the basic steps you need (untested so backup 
> your data)
> 1. gpart add -t efi -s 800k <dev>
> 2. gpart bootcode -p /boot/boot1.efifat  -i <idx> <dev>
> 3. Ensure your root filesystem has EFI ZFS boot compatible world e.g.
>       cd /usr/src && make buildworld -jXX && make installworld
> 
> If you have an active MBR then you will likely need to disable this as 
> EFI seems to ignore disks with active MBR even if they have a valid EFI 
> partition.

What you mean "active MBR" and "ignore disks with active MBR"?

> If you don't have space then you'll need to migrate to a difference 
> device to change the disk partition layout.
> 
>      Regards
>      Steve
> 
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