[Bug 399954] Re: Karmic Boot hangs at "Configuring network interfaces"

[Scott James Remnant]

And from an Upstream POV, there's an even more brittle case.  Ubuntu
happens to have /var/run on a tmpfs, so /var/run/utmp either doesn't
exist, is empty, or contains a runlevel (after rcS.d has finished).

But that's fairly unique to Ubuntu; other distros like Debian and Fedora
probably don't do this.

So during rcS.d, instead of not existing, /var/run/utmp exists and
contains data from when the machine was last booted!

During shutdown we do put a record in there to wipe the runlevel
information, but if the machine wasn't cleanly shut down, runlevel might
return "N 2" during rcS.d before /var/run/utmp is wiped!

So, in summary, don't call runlevel during rcS.d

-- 
Karmic Boot hangs at "Configuring network interfaces"
https://bugs.launchpad.net/bugs/399954
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