I'm currently thinking about installing the CoreOS on a bare-metal server with two disks I want to put in a software RAID1.
The latest CoreOS is now using EXT4 as their default filesystem and I'm fine with that - I've never used brtfs (their previous default) which apparently supports something close to a RAID1, and I'd rather stick to the default EXT4 and
mdadm with which I already have experience.
I can assemble the RAID using
mdadm (from a basic Linux environment loaded from the network) but I don't know what to do next, I'm pretty sure the CoreOS installer will wreck everything if I just give it the
/dev/md0 as the target disk so let's not do that.
Did anyone successfully try this ?