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More on soft restarts... Not sure if I already sent this out.
We can get a seamless restart if we fork/exec a new copy of slapd that
the currently open listener sockets. All the other descriptors should be
(Or we could explicitly loop through the descriptor table and close() all
that aren't in the listener list.)
I would suggest that the currently running slapd simply re-exec the path
that came in argv. It should in fact re-use the entire argv that it
was invoked with, but with an additional argument(s) to list the descriptors
that are open.
This scheme wouldn't allow starting a new slapd with different options from
the currently running one. It would be a good idea to add some of the
commandline-only options into the config file parser - listener URL and
IPv4/IPv6 handling come to mind.
-- Howard Chu
Chief Architect, Symas Corp. Director, Highland Sun
Symas: Premier OpenSource Development and Support