[gentoo-user] udev 208 to 212 update, 2 questions...

[Tanstaafl]

Ok, Getting ready to do this update, but the wiki text is confusing...

It states:



udev 208 to 212

The following special attention is required:

snip

File /lib/udev/rules.d/80-net-name-slot.rules was replaced with 
/lib/udev/rules.d/80-net-setup-link.rules. If you are currently using an 
empty (or single-comment) /etc/udev/rules.d/80-net-name-slot.rules to 
disable predictable network interface names, you should now use 
80-net-setup-link.rules. eg:


cd /etc/udev/rules.d/  ln 80-net-name-slot.rules 80-net-setup-link.rules

..to keep the override both pre- and post-upgrade; you can then:

rm /etc/udev/rules.d/80-net-name-slot.rules

..once you have upgraded. The hardlink can be made now, in order to 
protect against not noticing the upgrade in a busy or non-professional 
situation.


However, 80-net-setup-link.rules is only a trigger for the actual 
configuration file 99-default.link at /lib/systemd/network/ which you 
can override at /etc/systemd/network/
The most reliable way of disabling the new network interface scheme is 
still the kernel bootline parameter: net.ifnames=0


*

Question 1:
What if I am not using an empty (or single comment) 
/etc/udev/rules.d/80-net-name-slot.rules?


Does this mean I can ignore everything that follows (the comment really 
should open with that if so)?


Question 2: What is up with the last section talking about the net setup 
rules only with respect to systemd?


OpenRC is currently still the default init system for gentoo if I'm not 
mistaken, so why does this comment only reference systemd, totally 
ignoring OpenRC users?


Thanks,

Charles

Re: [gentoo-user] udev 208 to 212 update, 2 questions...

[Rich Freeman]

On Sun, Jun 8, 2014 at 2:34 PM, Tanstaafl tansta...@libertytrek.org wrote:

 Question 1:
 What if I am not using an empty (or single comment)
 /etc/udev/rules.d/80-net-name-slot.rules?

 Does this mean I can ignore everything that follows (the comment really
 should open with that if so)?

Yes


 Question 2: What is up with the last section talking about the net setup
 rules only with respect to systemd?

 OpenRC is currently still the default init system for gentoo if I'm not
 mistaken, so why does this comment only reference systemd, totally ignoring
 OpenRC users?

Nothing in this news item has anything to do with anybody who is using
the sys-apps/systemd package (at least, they're not impacted by this
particular upgrade).

sys-fs/udev installs its default network configuration rules in the
path /lib/systemd/network/, and if you want to override them you do
this in /etc/systemd/network.

If you do have sys-apps/systemd installed then you can override the
rules in the same place, but the news item is about an upgrade to
sys-fs/udev.

If you missed the news, systemd took over udev ages ago, and has been
renaming paths/binaries/etc.  It still does the same things it did
before the takeover.  You will just see more references to systemd in
path names.

With just udev the only thing the network scripts do is control
interface naming (I think).  If you do migrate to systemd the more
recent versions include systemd-networkd which can also configure the
network.  I've found that this works fairly well so far.  It seems to
be keeping my dhcp lease alive, which is more than I can say about
dhcpcd after the last dracut upgrade (the box would drop off the
network every 24h, and then lock up being that root was via nfs).

Rich