As a newbie to OpenMediaVault, I've been reading up as much as I can on how the file system might best be set up for me. At this point it seems like a pooling option combined with Snapraid makes sense. As some background, OpenMediaVault would be primarily media oriented, i.e. large mkv files, etc.). I've also considered running ProxMox on the bare metal base system, and running OpenMediaVault as a container to allow using the server to be utilized for general computer lab purposes. I'd be setting up OpenMediaVault (or ProxMox and VM's) on a SSD, and a pool of hard drives that excludes things that are database driven and change frequently such as Plex housekeeping from Snapraid.
It appears that each of the pooling options have issues. Aufs apparently has the issue of leaving behind whiteout and opaque files unless fixing and compiling custom kernels, mhdds apparently experiences frequent disconnects (particularly with large files), LVM you loose the array if a drive fails, and OverlayFS seems to be supported sporadically.
If you were doing a new install without worrying about migrating old data, which option is optimal right now?