I'm using BTRFS with satisfaction (I mentioned it in 2014 and, more recently, in the IT-Notes blog). I don't consider it optimal for all types of loads, but it solves many problems in many situations. One of the things I use with more satisfaction is the dynamic snapshot generation function, which guarantees the possibility to have a perfect and immediate copy of a specific volume (or subvolume). When a backup is needed, for example, the use of snapshots is fundamental and having them at file...
