I stopped using lxc snapshots after I had a btfs subvolume that would crash the system when I mounted it. After that, no problems. That's unfortunate. What op

I stopped using lxc snapshots after I had a btfs subvolume that would crash the system when I mounted it. After that, no problems. That's unfortunate. What operating system version were you using at the time? I've actually switched to using Ubuntu 15.10 for the container hosts so that I can get a more recent version of the btrfs tools. The intention is to upgrade to 16.04 as soon as is reasonable, and leave them there for a long time.