Arch Linux

Sloonz

Member

Registered: 2010-03-02

Posts: 38

[SOLVED] No network after reboot

Hello,

After 200+ days of uptime, I had to reboot a server in order to load a module (installed kernel and running kernel didn’t match anymore, obviously). Unfortunately, I couldn’t ping the server after the reboot. Since I don’t have any physical access to the server, I rebooted in "rescue" mode, mounted the server root partition, chrooted into it, and dig into the logs. First obvious issue: eth0 doesn’t exists anymore (interface renaming). I added

ip l > /var/log/debugboot

to /etc/rc.local, which gives me the name on the new interface, eno1. Changed it in /etc/netctl/eth0 (Interface=) and /etc/systemd/system/netctl@eth0.device (BindsTo= and After=). Disabled rescue mode, rebooted… and still didn’t work. After rebooting in rescue mode once again, I find this in the logs :

Mar 25 00:12:25 ks23051.kimsufi.com systemd[1]: Timed out waiting for device sys-subsystem-net-devices-eno1.device.
Mar 25 00:12:25 ks23051.kimsufi.com systemd[1]: Job sys-subsystem-net-devices-eno1.device/start timed out.

« Interesting » think : I don’t have the expected "renamed network interface eth0 to eno1" line in the logs.

Anyone has an idea on the issue ?

Last edited by Sloonz (2014-03-26 17:30:15)

Sloonz

Member

Registered: 2010-03-02

Posts: 38

Re: [SOLVED] No network after reboot

A very old kernel (too old for systemd-211 taste it seems) was put on top of /boot/grub/menu.lst. That was the issue.