Hello all
The following two patches add udev driven network configuration support
and a basic nfsroot handler.
As describe earlier, there can be many weird and complicated netboot
cases. The requirement that it should be udev driven doesn't make it any
easier. At least at first glance.
The current solution actually makes use of udev for speed up. The idea
is based on Victor Lowther's first implementation which forked off
dhclients after the udev event fired. By modifying ifup and the
dhclient-script we can synchronize back by using a simple (blocking)
FIFO. Interfaces which are ready are upped and tested FIFO-style by
reading one out of the fifo, and handing over the the actual
mount-script. If it succeeds, all is well. If it fails or times out, we
try (or wait for) the next interface.
The whole interface configuration part tries to behave as much like the
current implementation inside the kernel as possible, with a few
extensions:
- I'm assuming that if there's a network driver inside the initrd the
user wants something. So no ip= option is treated like ip=dhcp
- Instead of only relying on the first interface that pops up or the one
that first receives a dhcp reply we try all interfaces that have a
useable configuration.
Patches apply on top of Harald Hoyers merge tree
(git://git.surfsite.org/pub/git/dracut.git)
Regards,
Philippe
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