On 06/15/2018 05:09 PM, Jason L Tibbitts III wrote:
>>>>>> "CM" == Chris Murphy <li...@colorremedies.com> writes:
> CM> The installer right now, against upstream mdadm dev's explicit
> CM> advice, sets up an mdadm raid1 using (I think deprecated 0.9
> CM> metadata format but could also work with 1.0 format).
>
> And I'm really happy that it does; I have used that configuration for
> years on a number of machines and have had good luck.  I had previously
> run multiple ESPs with something to sync between them and it also
> worked, but was actually more fragile in practice.
>
> So to me it's a toss up between two bad choices, foisted on us by the
> shortsightedness of whichever committee of committees "designed" UEFI.
> Their solution was obviously to either tell everyone to use a "real"
> RAID controller or use "BIOS RAID" (and these days, maybe pay Intel for
> a physical license key/VROC dongle).

I think this is interesting. I was looking for an ESP on bootable RAID
solution a few months ago and immediately ruled this solution out
because deprecation and assumption that anaconda would use the new
format. It's interesting that this is the solution anaconda went with.

I can't remember what else I discovered in reading the manual last. Do
you know if there are any other discovery/identification limitations to
the old superblocks?
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