RAID + UEFI

[Justin Cattle]

Hi,


There's probably a few different ways to do this.  Here is a fairly generic
disk_config example I created last time I was working on FAI.
I haven't used the config n a while, but it's should be some inspiration
even if it doesn't work for you as it is:

$ cat disk_config/FAIBASE_EFI_RAID
# default EFI raid disk config
# <type> <mountpoint> <size>   <fs type> <mount options> <misc options>
disk_config disk1 disklabel:gpt fstabkey:uuid align-at:1M
primary         -         256M            -       -
primary         -         256M-           -       -
primary         -         RAM:20%         -       -

disk_config disk2 sameas:disk1

disk_config raid fstabkey:uuid
raid1           /boot/efi disk1.1,disk2.1 vfat    rw
mdcreateopts="--metadata=1.0"
raid1           /         disk1.2,disk2.2 ext4    defaults,noatime,discard
raid1           swap      disk1.3,disk2.3 swap    sw


You can also use LVM as well on top if you like.  Here is my example for
htat [ again, from last time I looked at this stuff ]:

$ cat LVM_EFI_RAID
# default LVM EFI raid disk config
# <type> <mountpoint> <size>   <fs type> <mount options> <misc options>
disk_config disk1 disklabel:gpt fstabkey:uuid align-at:1M
primary         -         256M            -       -
primary         -         1G              -       -
primary         -         4G-             -       -

disk_config disk2  sameas:disk1

disk_config raid fstabkey:uuid
raid1           /boot/efi disk1.1,disk2.1 vfat    rw
mdcreateopts="--metadata=1.0"
raid1           /boot     disk1.2,disk2.2 ext4    defaults,noatime,discard
raid1           -         disk1.3,disk2.3 -       -

disk_config lvm fstabkey:uuid

vg vg md2
vg-root         /         256M-           ext4    defaults,noatime,discard
vg-swap         swap      RAM:20%         swap    sw


Hope that helps.

Cheers,
Just


On Wed, 20 Sept 2023 at 08:14, Thomas Kloepfer <
thomas.kloepfer at iwr.uni-heidelberg.de> wrote:

> Hello,
>
> I am rather new to FAI. But I am impresst by this great tool.
> Especially by the documentation that commes with it.
>
> But I am suprised I do not find any working example on how to set up a
> simple RAID 1 with UEFI boot.
>
> I read all the discussions in this mailinglist (found two threads
> dealing with the problem).
>
> I am aware that RAID and UEFI do not get together well due to the fact
> that the RAID information is not available at boot-time and [grup] has
> to deal with a device [sda] rather than with a partition [md0]. Futher
> more [grup] needs a partition with partition type [vfat].
>
> I can imaging a solution with FAI that needs special one-time treatment
> done manualy after FAI hast terminated, but this kills the aim of FAI :
> A=fully, A=automated .
>
> so my question is:
> - Can any one supply a solution that manages RAID 1 with UEFI at the
> same time?
>    (I would be sadisfied with a solution where the Partition used by
> UEFI-boot is *not* on a RAID.)
>
>    or
>
> - Is it realy just not so easy to get RAID and UEFI to work together
> because FAI was established at a time where there was no UEFI boot.
> Hence the stucture of FAI is not intended to solve this in the first
> pace. Attemts to solve this will result in rather ugly workarounds?
>
> I'd appreciate any helpfull reply.
> And thanks again for this great tool.
>
> Thomas Kloepfer
>

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