This is a followup to this: Figure out comprehensive strategy for atomic host container storage https://pagure.io/atomic-wg/issue/281
I said I'd post something to the Btrfs devel list about combining Btrfs and overlayfs; and I got back a couple interesting replies including, "We've been running Btrfs with Docker at appreciable scale for a few months now (100-200k containers / day )" https://www.spinics.net/lists/linux-btrfs/msg67308.html Also, installing Fedora-Workstation-ostree-x86_64-Rawhide-20170714.n.0.iso then converting to Btrfs still uses overlayfs for all the rpm-ostree related commands that add in layers; so I've been using that combination on a test machine and didn't realize it until now, and I haven't had any problems so far. Anyway, in the pagure issue mentioned above, what keeps coming up are a bunch of complexities with partitioning, LVM, and fs resizing limitations. All of the mentioned dilemmas go away with Btrfs. The one dilemma Btrfs adds is quota support is definitely still a work in progress, sometimes bringing performance penalties with bigger file systems. This is better qualified in the spinics message. -- Chris Murphy
