What about some integration of "amcleanup" and "amdump" ?
I imagine a parameter definining the time of day the amdump should be finished (= the servers are available and idle for users ...). When amdump is running and somehow noticing that the current dumps will take more time than until XX:YYam it could decide to stop things after the current DLE or something like that. Something like "amcleanup -k" but triggered by amdump itself. Sure, it should trigger a warning or so because the overall goals might not be met when stopping things. But it would be preferable for admins to keep up server-availability while tinkering with backup-parameters. What do you users/devs think? Stefan