F20 - What replaced start_udev - Re: creating 70-persistent-net.rules

[Robert Moskowitz]

On 08/26/2014 09:20 AM, fedora wrote:
>
>
> On 2014-08-26 15:02, Robert Moskowitz wrote:
>> It appears to be
>>
>> udevadm
>>
>> Which is so complex.  According to the man page 'command --reload-rules'
>> does NOT change any device that has existing rules. So by that, if you
>> change a rule, tough luck.  It is SUPPOSE to be automatic.
>>
>> I have tried exporting the dev-db and looking for the mac info. But
>> have not succeeded yet.
>>
>> On 08/26/2014 08:23 AM, Robert Moskowitz wrote:
>>> All the instructions I have found for 70-persistent-net.rules call for
>>> running:
>>>
>>> start_udev
>>>
>>> But it is not on ANY of my f20 systems, arm or intel. Something
>>> changed.  Most likely related to systemd stuff.
>>>
>>> So any pointers would be appreciated, as I still don't have this 
>>> working.
>>>
>>>
>>> On 08/25/2014 06:19 PM, Robert Moskowitz wrote:
>>>>
>>>> On 08/25/2014 05:05 PM, Digimer wrote:
>>>>> On 25/08/14 04:45 PM, Robert Moskowitz wrote:
>>>>>>
>>>>>> On 08/25/2014 03:57 PM, Digimer wrote:
>>>>>>> On 25/08/14 03:52 PM, Robert Moskowitz wrote:
>>>>>>>> This is on a f20 arm system, but it should be like any F20
>>>>>>>> system. Yeah,
>>>>>>>> famous last words.
>>>>>>>>
>>>>>>>> So I want a 70-persistent-net.rules so I can specify the MAC
>>>>>>>> address to
>>>>>>>> the device name.  Then in the ifcfg-xxxx I can change the 
>>>>>>>> MACADDR to
>>>>>>>> what I want.
>>>>>>>>
>>>>>>>> I got this working on my Redsleeve arm system, but now I need it
>>>>>>>> on my
>>>>>>>> F20 arm system.
>>>>>>>>
>>>>>>>> So I have done a little searching on creating
>>>>>>>> 70-persistent-net.rules,
>>>>>>>> and I come up with two commands:
>>>>>>>>
>>>>>>>> udevadm trigger
>>>>>>>> udevadm trigger --action=add
>>>>>>>>
>>>>>>>> I have run both and no 70-persistent-net.rules
>>>>>>>>
>>>>>>>> help please...
>>>>>>>
>>>>>>> As before, you need to create it yourself. I wrote a little script
>>>>>>> that will do this, which you can see here:
>>>>>>>
>>>>>>> https://alteeve.ca/w/Changing_Ethernet_Device_Names_in_EL7_and_Fedora_15%2B#Writing_The_udev_Rules_File 
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> Thanks.  I used your script to create my rules file:
>>>>>>
>>>>>> # cat /etc/udev/rules.d/70-persistent-net.rules
>>>>>>
>>>>>> # Added by 'write_udev' for detected device 'eth0'.
>>>>>> SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
>>>>>> ATTR{address}=="02:56:02:01:f3:b9", NAME="eth0"
>>>>>>
>>>>>> And that looked good (right madaddr and device name). So built my
>>>>>> ifcfg-eth0:
>>>>>>
>>>>>> # cat /etc/sysconfig/network-scripts/ifcfg-eth0
>>>>>> DEVICE="eth0"
>>>>>> BOOTPROTO=none
>>>>>> NM_CONTROLLED="no"
>>>>>> ONBOOT="yes"
>>>>>> TYPE="Ethernet"
>>>>>> NAME="System eth0"
>>>>>> MACADDR=02:67:15:00:01:78
>>>>>> MTU=1500
>>>>>> DNS1=208.83.67.188
>>>>>> GATEWAY="208.83.67.177"
>>>>>> IPADDR="208.83.67.178"
>>>>>> NETMASK="255.255.255.240"
>>>>>> HOSTNAME="miredo.htt-consult.com"
>>>>>> IPV6INIT="yes"
>>>>>> DNS2=2607:f4b8:3:3:9254:5400:0:188
>>>>>>
>>>>>> Something is missing as after the change I restarted 
>>>>>> network.services
>>>>>> and got IPv6 RA errors.  So I rebooted and now no eth0 listed with
>>>>>> ifconfig (or ip addr show).  So something is lacking. Almost like 
>>>>>> udev
>>>>>> is not running at boot?  How do I check this out?
>>>>>
>>>>> I've not played with IPv6 yet, and on my system it "just worked". So
>>>>> I'm not sure what to suggest. Is there a systemd udev target?
>>>>
>>>> SOmething like this:
>>>>
>>>> # systemctl list-unit-files --type=service|grep udev
>>>> dracut-pre-udev.service                     static
>>>> initrd-udevadm-cleanup-db.service           static
>>>> systemd-udev-settle.service                 static
>>>> systemd-udev-trigger.service                static
>>>> systemd-udevd.service                       static
>>>>
>>>>
>>>
>>
>
> I reported the inability to change network-interface names in 
> 70-persistent-net.rules as a bug on centos 7.
> http://bugs.centos.org/login_page.php , report number 0007472
>
> I was told to set the two kernel parameters
>
> net.ifnames=0 biosdevname=0

Where/how do you change these?

>
> after that, still in centos 7, the kernel did not change the 
> network-interface names any more, but still I was not able to rename 
> them.
>
> This may help also in fedora 20?

See SOLVED posts coming up.  All working, but I am not renaming the 
interface, I am changing the macaddr.