On Wed, 20 Oct 2004 16:39:07 -0400, Roberto Peon <grmoc@xxxxxxxxx> wrote: > How would falling back to serial boot help? > > Not launching the services whose dependancies are not satisfied seems like a > good idea to me. It is better than the current, try it anyway, and see it > fail (sometimes spectacularly). Uhm... i think you are mixing several different technical problems together. Parallel booting addresses the specifc problem of how to order 'attempted' start up of service scripts. There is no reason to say that a later script must not be 'attempted' if an eariler script in the ordering has a problem. You are using I think 'dependancy' in an all encomposing way to include hard dependancies as well as conditional dependancies. Just because a 'dependancy' fails to start doesn't mean a later service doesn't launch. Services scripts can have conditional logic... foo initscript if network is running do this if network is not running do that bar initscript if sshd is running do this if sshd is not running do that Are completely valid conditional checks that later scripts can use to taste the state of the system and decide how to proceed. In these cases network and sshd are still dependancies in the sense that they need to be 'attempted' to be run for the conditional logic to have any validity. The startup scripts for these services still need to be 'attempted' before my foo are bar services, but whether or not network is running or sshd is running is not a failure state that causes foo or bar to not be launced. Service scripts that depend on something else running should be robust enough to have conditional logic and do their own internal checking for system state before attempting to doing something spectacularly stupid. Lets not drag failure status into the debate about ordering. Each initscript should internalize its own checks and do its own conditional logic to check for system state. What parallel bootup should be addressing is SOLELY how to order script start up. It should not refuse to attempt to start up a script. If a script has been requested to be on at boot...it should be run at some point in the ordering...and its internal checks should be used to catch system state problems. -jef -jef
