Merge pull request #38773 from bandresen/zfsAutoSnapshot

zfs.autoSnapshot: make `frequent` run every 15 mins

nixos/modules/tasks/filesystems/zfs.nix

···
                               }) snapshotNames);
 
       systemd.timers = let
-                         timer = name: if name == "frequent" then "*:15,30,45" else name;
+                         timer = name: if name == "frequent" then "*:0,15,30,45" else name;
                        in builtins.listToAttrs (map (snapName:
                             {
                               name = "zfs-snapshot-${snapName}";