I have not used proxmox yet. I am doing my initial research to see how to set it up.
On my existing HDA (dead, won't post) I used a small drive for amahi, then had 3 large drives as my storage, one was a parity drive for snapraid. I used greyhole to pool the 2 (non-parity) drives. I want to combine my HDA server w/ my mythtv backend server (which I built in 2002... and its only had a hard drive replacement

So my question, why not use proxmox LVM as your "pool" within your amahi VM? I don't have a lot of LVM experience so that question might not make much sense.
In the amahi wiki, it looks like the writer is giving the amahi VM direct access to the drives to use grey hole for your pooling. Why not use NFS to give amahi access to a folder in the LVM?
Having never used LVM, I don't know if this is ok or not. LVM kinda scares me since loosing one drive kinda kills the whole "pool" (i think).
My plans are to use snapraid running on the proxmox install. This would limit my worries about loosing an LVM drive.
Is making all my drives part of the LVM a bad idea?