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

[Eric van Gyzen]

On 01/15/2016 06:22, 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.
>
> If you don't have space then you'll need to migrate to a difference
> device to change the disk partition layout.

I just used the above procedure to convert a Dell PowerEdge R320 to
ZFS+EFI.  It works.  Thanks for your hard work, Eric and Steven.  I'm
looking forward to this hitting 10.3 (hint hint).

smbios.bios.reldate="05/11/2012"
smbios.bios.version="1.2.4"
smbios.system.maker="Dell Inc."
smbios.system.product="PowerEdge R320"

machdep.bootmethod: UEFI

FreeBSD 11.0-CURRENT #6 r294934M: Wed Jan 27 15:43:59 CST 2016 ...
sys/GENERIC

=>       40  976773088  mfisyspd0  GPT  (466G)
         40       1024          1  freebsd-boot  (512K)
       1064       1600          2  efi  (800K)
       2664   33552832          4  freebsd-swap  (16G)
   33555496  943217632          3  freebsd-zfs  (450G)

    NAME           STATE     READ WRITE CKSUM
    zroot          ONLINE       0     0     0
      mfisyspd0p3  ONLINE       0     0     0

mfi0 Adapter:
    Product Name: PERC H310 Mini
        Firmware: 20.10.1-0084

mfi0 Physical Drives:
 0 (  466G) JBOD <WDC WD5003ABYX-1 1S02 serial=WD-WMAYP3350415> SATA E1:S0

(The root pool is just a single SATA disk.)