Hi, It seems I never mailed the list yet about a fun little tool to visualize the space usage of a btrfs filesystem: https://github.com/knorrie/btrfs-heatmap It needs python-btrfs to query a btrfs filesystem for block group usage and pypng to generate an image showing disk space usage as some kind of heatmap. More info is in the README inside the project. The Hilbert curve might seem a little weird at first, but I haven't seen a better way of visualization that keeps providing useful information about locality for larger filesystems. Today on IRC naptastic shared a timelapse video of using btrfs balance after adding 2 disks to a filesystem: 20:30 < naptastic> https://youtu.be/AA5gvsRtLgI 20:30 < naptastic> Enjoy! Oh, and if someone is bored... What about creating an ncurses frontend for fun, that looks like this, while you're waiting on btrfs balance to complete... https://hblok.net/blog_pics/nsd.png Quote of the day: 01:09 < kdave> watching speeddisk was a computer game substitute of my youth P.S. This program also shows how convenient it is to build something else on top of python-btrfs... The lines that are really needed to get all information about the filesystem can be counted on two hands. :) Moo! Knorrie -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html