[Buildroot] eth0 missing ?

[Buildroot] eth0 missing ?

[Sagaert Johan]

 
Hi

Where could the reason be for this, I did not have this a while ago.
I am not in position to investigate right now, but some hints are welcome.

Partial bootlog: 

...snip...
flexcan 80034000.can: device registered (reg_base=c8a90000, irq=213)
fec 800f0000.ethernet eth126: renamed from eth0
input: gpio-keys as /devices/soc0/gpio-keys/input/input0
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
udevd[71]: renamed network interface eth0 to eth126                          <---------------------???
fec 800f0000.ethernet eth1: renamed from eth126
udevd[71]: renamed network interface eth126 to eth1                          <---------------------???
ci_hdrc ci_hdrc.0: doesn't support gadget
ci_hdrc ci_hdrc.0: no supported roles
ci_hdrc ci_hdrc.1: EHCI Host Controller
ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 3.18.5-apex ehci_hcd
usb usb1: SerialNumber: ci_hdrc.1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
done
Initializing random number generator... done.
Starting rpcbind: OK

..snip..
 
Regards
Sagaert Johan

[Buildroot] eth0 missing ?

[Gustavo Zacarias]

On 02/25/2015 06:57 AM, Sagaert Johan wrote:

> Hi
> 
> Where could the reason be for this, I did not have this a while ago.
> I am not in position to investigate right now, but some hints are welcome.
> 
> Partial bootlog: 
> 
> ...snip...
> flexcan 80034000.can: device registered (reg_base=c8a90000, irq=213)
> fec 800f0000.ethernet eth126: renamed from eth0
> input: gpio-keys as /devices/soc0/gpio-keys/input/input0
> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> udevd[71]: renamed network interface eth0 to eth126                          <---------------------???
> fec 800f0000.ethernet eth1: renamed from eth126
> udevd[71]: renamed network interface eth126 to eth1                          <---------------------???
> ci_hdrc ci_hdrc.0: doesn't support gadget
> ci_hdrc ci_hdrc.0: no supported roles
> ci_hdrc ci_hdrc.1: EHCI Host Controller
> ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
> ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> usb usb1: Product: EHCI Host Controller
> usb usb1: Manufacturer: Linux 3.18.5-apex ehci_hcd
> usb usb1: SerialNumber: ci_hdrc.1
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 1 port detected
> done
> Initializing random number generator... done.
> Starting rpcbind: OK
> 
> ..snip..

Hi.
That's udev/systemd to blame normally, see:
http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

Regards.

[Buildroot] eth0 missing ?

[Sagaert Johan]

 
-----Oorspronkelijk bericht-----
Van: Gustavo Zacarias [mailto:gustavo at zacarias.com.ar] 
Verzonden: woensdag 25 februari 2015 15:04
Aan: Sagaert Johan; buildroot at busybox.net
Onderwerp: Re: [Buildroot] eth0 missing ?

On 02/25/2015 06:57 AM, Sagaert Johan wrote:

> Hi
> 
> Where could the reason be for this, I did not have this a while ago.
> I am not in position to investigate right now, but some hints are welcome.
> 
> Partial bootlog: 
> 
> ...snip...
> flexcan 80034000.can: device registered (reg_base=c8a90000, irq=213) 
> fec 800f0000.ethernet eth126: renamed from eth0
> input: gpio-keys as /devices/soc0/gpio-keys/input/input0
> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> udevd[71]: renamed network interface eth0 to eth126                          <---------------------???
> fec 800f0000.ethernet eth1: renamed from eth126
> udevd[71]: renamed network interface eth126 to eth1                          <---------------------???
> ci_hdrc ci_hdrc.0: doesn't support gadget ci_hdrc ci_hdrc.0: no 
> supported roles ci_hdrc ci_hdrc.1: EHCI Host Controller ci_hdrc 
> ci_hdrc.1: new USB bus registered, assigned bus number 1 ci_hdrc 
> ci_hdrc.1: USB 2.0 started, EHCI 1.00 usb usb1: New USB device found, 
> idVendor=1d6b, idProduct=0002 usb usb1: New USB device strings: Mfr=3, 
> Product=2, SerialNumber=1 usb usb1: Product: EHCI Host Controller usb 
> usb1: Manufacturer: Linux 3.18.5-apex ehci_hcd usb usb1: SerialNumber: 
> ci_hdrc.1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 1 port detected done 
> Initializing random number generator... done.
> Starting rpcbind: OK
> 
> ..snip..

Hi.
That's udev/systemd to blame normally, see:
http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

Regards.


Hi

That's strange since I am using busybox as the init system.

Will need to check the list of recent commits.

Regards , Johan

[Buildroot] eth0 missing ? [SOLVED]

[Sagaert Johan]

 
-----Oorspronkelijk bericht-----
Van: Gustavo Zacarias [mailto:gustavo at zacarias.com.ar] 
Verzonden: woensdag 25 februari 2015 15:04
Aan: Sagaert Johan; buildroot at busybox.net
Onderwerp: Re: [Buildroot] eth0 missing ?

On 02/25/2015 06:57 AM, Sagaert Johan wrote:

> Hi
> 
> Where could the reason be for this, I did not have this a while ago.
> I am not in position to investigate right now, but some hints are welcome.
> 
> Partial bootlog: 
> 
> ...snip...
> flexcan 80034000.can: device registered (reg_base=c8a90000, irq=213) 
> fec 800f0000.ethernet eth126: renamed from eth0
> input: gpio-keys as /devices/soc0/gpio-keys/input/input0
> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> udevd[71]: renamed network interface eth0 to eth126                          <---------------------???
> fec 800f0000.ethernet eth1: renamed from eth126
> udevd[71]: renamed network interface eth126 to eth1                          <---------------------???
> ci_hdrc ci_hdrc.0: doesn't support gadget ci_hdrc ci_hdrc.0: no 
> supported roles ci_hdrc ci_hdrc.1: EHCI Host Controller ci_hdrc 
> ci_hdrc.1: new USB bus registered, assigned bus number 1 ci_hdrc 
> ci_hdrc.1: USB 2.0 started, EHCI 1.00 usb usb1: New USB device found, 
> idVendor=1d6b, idProduct=0002 usb usb1: New USB device strings: Mfr=3, 
> Product=2, SerialNumber=1 usb usb1: Product: EHCI Host Controller usb 
> usb1: Manufacturer: Linux 3.18.5-apex ehci_hcd usb usb1: SerialNumber: 
> ci_hdrc.1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 1 port detected done 
> Initializing random number generator... done.
> Starting rpcbind: OK
> 
> ..snip..

Hi.
That's udev/systemd to blame normally, see:
http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

Regards.





Hi 

In 2015.02-rc1 /run was introduced in the skeleton and an tmpfs entry was added in fstab.

There was an fstab file in my overlay file system that had overwritten the one from the skeleton
so that /run existed on the real filesystem instead of been mounted as tmpfs.
This caused the different pid files to remain between boots and confused eudev.

Best regards,
Johan

[Buildroot] eth0 missing ? [SOLVED]

[Gustavo Zacarias]

On 02/27/2015 04:28 PM, Sagaert Johan wrote:

> Hi 
> 
> In 2015.02-rc1 /run was introduced in the skeleton and an tmpfs entry was added in fstab.
> 
> There was an fstab file in my overlay file system that had overwritten the one from the skeleton
> so that /run existed on the real filesystem instead of been mounted as tmpfs.
> This caused the different pid files to remain between boots and confused eudev.
> 
> Best regards,
> Johan

Hi.
Buildroot assumes /run is volatile hence doesn't do any cleanup tasks on
it at boot time.
Regards.