In my opinion "older than" should NOT imply "last accessed/used". Such a feature should be taken care of separately / optionally. I'd guess that most users use apt-btrfs-snapshot exclusively in order to revert their system in case of an update gone wrong. In this use case, atime is of no practical use whatsoever. (Of course some users will use apt-btrfs-snapshot to switch between different versions of their OS and this should be supported, but preferably not at the expense of the "main" feature.)
I've stumbled upon the same issue.
Here's what I found:
https:/ /answers. launchpad. net/ubuntu/ +source/ apt-btrfs- snapshot/ +question/ 263994
https:/ /bugs.launchpad .net/ubuntu/ +source/ apt-btrfs- snapshot/ +bug/833980
In my opinion "older than" should NOT imply "last accessed/used". Such a feature should be taken care of separately / optionally. I'd guess that most users use apt-btrfs-snapshot exclusively in order to revert their system in case of an update gone wrong. In this use case, atime is of no practical use whatsoever. (Of course some users will use apt-btrfs-snapshot to switch between different versions of their OS and this should be supported, but preferably not at the expense of the "main" feature.)