Secondly, is there a benefit to creating an LVM volume with a btrfs filesystem vs just letting btrfs handle it?
Like, btrfs on top of LVM versus btrfs? Well, the latter gives you access to LVM features. If you want to use lvmcache or something, you’d want it on LVM.


























FOV shouldn’t be ignored, but having a large FOV also isn’t necessarily desirable on a HMD. It’s important for VR, because a major point of that is filling one’s peripheral vision, creating a sense of immersion.
But if you wanted, say, an HMD as a monitor replacement — something that I’d be interested in — it doesn’t buy all that much, because the stuff that you can see with high detail is only in a small cone in front of you. For a given pixel resolution, I’d rather have a smaller FOV on an HMD for that, because you can take advantage of fairly high angular resolutions within that narrow cone. The real bottleneck on an HMD as a monitor replacement is the limited angular resolution you get — you can’t have something that gets as sharp and crisp as existing conventional monitors.