Comment 4 for bug 1569724

In Bug #833980 Dark Dragon writes: "I think it is better to parse the snapshot name, since it includes the creation time anyway. Feel free to review my changes"

Sounds like a good solution to me, but seems to be still not implemented yet.
I'm using Kubuntu 18.10 with a btrfs root partition.
If I miss to delete older snapshots for some months (which is very annoying, because I have to delete every snapshot manually), then the partition gets filled up and Kubuntu can't boot any more. So then I have to boot with CD, delete snapshots and everything returns to normal. I would prefer to use "apt-btrfs-snapshot delete-older-than 10d" e.g. in chron.daily, but switching off noatime is definitely no choice, since this is not recommended for ssd.