/etc/udev/rules.d/70-persistent-net.rules is your friend
the device names defined in there are set nice and early during boot,
well before any ifcfg scripts
K
Kahlil (Kal) Hodgson GPG: C9A02289
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the parts you are reassembling were disassembled by you. Therefore,
if you can't get them together again, there must be a reason. By all
means, do not use a hammer." -- IBM maintenance manual, 1925
On 16 November 2013 10:12, SilverTip257 <silvertip257@xxxxxxxxx> wrote:
> On Fri, Nov 15, 2013 at 2:33 PM, Scott Robbins <scottro@xxxxxxxxxx> wrote:
>
>> On Fri, Nov 15, 2013 at 01:50:18PM -0500, SilverTip257 wrote:
>> > Hello All,
>> >
>> > I have one CentOS 6 KVM virtualization server that I built around a year
>> > ago (best I can tell it was in October 2012) at which time I would have
>> > been installing 6.3 [0]. That particular install used the Consistent
>> > Network Device Naming [1] conventions (PCIe NICs are p1p1, p1p2).
>>
>> This regression is a combo RedHat/Dell idea, IIRC. That may be why it's
>> that way on a Dell machine. On Fedora, which usually shows what new
>> regressions will be in RH, it's gotten harder to fix with each iteration.
>>
>> To make it worse, at least on Fedora (and again, many of their ideas,
>> whether good or bad for servers, get into RedHat) has apparently now been
>> intertwined with systemd. At first, one simply had to remove the
>> biosdevnames rpm to fix it. Now, one has to do that, and also add, (in
>> Fedora, with grub2) net.ifnames=0 to the kernel line. (Note that this was
>> for Fedora 19, not sure if they at least removed biosdevnames in F20).
>>
>
> I'm not tied to wanting my network interfaces to be ethX.
> Once my servers are configured, I'm generally not changing anything, so for
> all it matters they could be called wan0, etc.
>
> I actually think some of the conventions are worthwhile (ex: em for
> embedded, pXpY for PCI cards - I've not seen any others on Fedora/CentOS).
> I believe embedded NIC naming on Dell hw starts with em1 rather than em0
> which is odd (we start counting at zero!).
>
>
>>
>> To make it even more of a mess, (again, this is judging from Fedora, which
>> is good to keep on hand to see what new decisions good and bad will be made
>> by RH), I think biosdevnames gave it one name and then the whole systemd
>> thing gave it another. So, it would boot up as say p12p but in
>> /etc/sysconfig/network-scripts it would show up as ifcfg-p1p2p or something
>> like that. (I'm making these names up, but that was the general idea.)
>>
>
> I did see something similar to this, I believe it was on a Fedora system I
> was using for testing ... I don't recall which release though.
>
> RHEL7 ought to have some "Easter eggs" for us. ;)
>
>
>>
>> Some people consider it a good thing, especially when moving drives between
>> machines, but aside from it being something new, which isn't necessarily
>> improved, it breaks various working scripts.
>>
>> Like you, I consider it a regression, but of course, that's only my
>> opinion, and many experienced folks disagree, thinking it's a good
>> thing--although I'm sure that even they would agree that they better figure
>> out if biosdevname or something else will be handling it so that it is at
>> least consistent.
>>
>
> I'm not calling the biosdevname conventions a regression.
> But what I am calling a regression is all the flip flopping between the old
> convention and the new one, especially on two nearly identical hardware
> builds and OS builds for that matter.
>
>
>>
>> Actually, I think (but am not sure, that in VMs, even Fedora will use the
>> eth0, eth1 system rather than the new naming scheme. Not just KVM, but
>> also VirtualBox, VMware, and so on--that has been my experience with CentOS
>> VMs at least.
>>
>> --
>> Scott Robbins
>> PGP keyID EB3467D6
>> ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
>> gpg --keyserver pgp.mit.edu --recv-keys EB3467D6
>>
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>>
>
>
>
> --
> ---~~.~~---
> Mike
> // SilverTip257 //
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