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Tim Post
Asked: 2011-03-02 18:40:46 +0800 CST

Question regarding Linux LSB init script directives

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I'm making some init scripts to start some system services that require other services to have started in order to start successfully. For instance, one service requires that xenstored be running before it can start.

If I understand correctly, LSB init scripts have the following directives:

# Required-Start:
# Should-Start:
# Required-Stop:
# Should-Stop:

My question is, would it be sufficient to simply put xenstored after Required-Start: and what is the difference between Required and Should? Additionally, Does Debian 5 honor these directives?

debian lsb init.d

1 Answers

  1. Best Answer

    Go ahead and use all those directives for forward compatibility (dependency-based booting), but they will not be used by Debian 5 (lenny). They are used beginning in Debian 6 (squeeze).

    In lenny, you should just use:

    # Default-Start:     2 3 4 5
# Default-Stop:      0 1 6

    And then when you install your init.d script do:

    update-rc.d my-init-script defaults 25

    Where 25 is greater than the number Y associated with xenstored in /etc/rc[2-5].d/Yxenstored

    In Debian Squeeze, assuming xenstored "provides" xenstored:

    # Required-Start: xenstored

    For futher reading run:

    man insserv
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