> Here's a first cut, and I could use some more good comments.
If I may delurk...
> u8 linux_booted_ok; // Linux booted into runlevel 3
Runlevel 3 is conventionally used for server style boots in e.g. RedHat,
but workstations with X will use rl5. I have plans for maybe using the
currently unused rl4.
> linux_booted_ok is set by linux at the discretion of the user. In a
> cluster, I would set it by issuing a command from the control node.
> Cluster nodes are not really up until they can be controlled from a
> control node. I would even do this for desktops; desktops aren't useful to
> sysadmins until they can take a remote command.
Our cluster software is designed such that nodes are independent any
single server or control node; they can be doing meaningful things
before, e.g. IP is available. Being "up" in this sense means "I'm trying
to form a cluster", not that any standard rl has been achieved, or
anything *you* might consider "up". Your "up" ain't mine. :)
As you say, it's at the discretion of the user, so I urge you to remove
references to runlevels, control node etc in any definitions, including
code comments. The facility sounds great: by all means describe typical
*applications* of it (e.g. "A server system might set linux_booted_ok on
completing runlevel 3"); just don't give the impression of hard-coding
these; being too specific may cause misunderstandings.
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