[CentOS] C 7 installation annoyances

In the disk partitioner, I can't
  1) choose to make the LVM with root and swap be on a RAID 1. Is there
        some way to do that, rather than two separate partitions RAIDed?
  2) They don't align, so I can't clone /dev/sda to /dev/sdb as a
        failover (for /boot and /boot/efi). I've created those two, manually,
        and nope, it wiped them out, so I can't clone those two.

Any solutions for either of these? I don't have hardware RAID card on this
box.

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