I have not, but the only reason for not trying it is because of my increasing use of RAID in hardware and VMs, I wanted something that was completely agnostic t

I have not, but the only reason for not trying it is because of my increasing use of RAID in hardware and VMs, I wanted something that was completely agnostic to disks, which is something ZFS delivers but JFS didn't seem to when I checked. Basically I wanted something that doesn't intertwine the concept of file-system with the concept of disks or partitions, but as space. So changes to the underlying pool of disks (or partitions, or loopback files, etc) don't mean so much painful rebuilding for me, something I spent many hundreds of hours on in the past, often at stupid o'clock in the morning. Did I mention how much I hate XFS? That's why :)