Bart Smaalders wrote: > Glenn Glazer wrote: >> Hi, Darren. >> >> I have a lot of SVR4 experience, but next to no IPS experience, so >> take the following in that context. >> >> It seems to me that what you are proposing has two important >> differences from the SVR4 experience: >> >> 1) Semanatic: I can control the contents of my system by controlling >> when I do installs. I may not (for whatever reason) want the latest >> and greatest providers. In this use case, I can reboot my system and >> stop/start/restart services arbitrarily many times without changing my >> system configuration. I therefore suggest that if you provide a means >> to automagically check for new things on service start, you provide a >> means for disabling this feature both always and for a given startup. >> Otherwise, people may feel that they have been blindsighted by what >> they will undoubtably call a "side effect" of service start. >> > > You mean you want to be able to install new packages, but not have them > used or configured?
For IPS that would be the case on upgrade anyway because this wouldn't run until the new BE was booted. These config files are in SUNWcsr so they aren't going to just randomly get updated they are seriously core OS stuff that only gets touched on a 'suninstall', 'luupgrade' or 'pkg image-update'. >> 2) Performance: outside of test labs, pkg installs happen much less >> frequently that server restarts/refreshes. If your post-install >> scripts have to phone home to download new functionality, this could >> very well be a user-visible delay in service start-up time. Most >> critically, this will happen during every restart/refresh, rather than >> once per system lifetime and the penalty will be paid whether there is >> anything to download or not. During boot, this may not be so obvious, >> but manual restarts have the potential to suffer greatly. > > Why would services "phone home" to download new functionality? I don't know where this came from in my context as that certainly doesn't happen. -- Darren J Moffat
