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Hello,
I'm using ethtool to set the Speed and Duplex Mode of a network interface to 10 Mbps and Full Duplex. Like this:
# ethtool -s eno1 speed 10 duplex full
To do that automatically at boot I created an instatiated systemd unit file in /etc/systemd/system/ethtool@.service
[Unit]
Description=ethtool configuration for %i
After=network.target
[Service]
ExecStart=/usr/bin/ethtool -s %i speed 10 duplex full
Type=oneshot
[Install]
WantedBy=multi-user.target
I then enabled ethtool@eno1.service, but after reboot I see that it didn't execute properly when I check the status.
● ethtool@eno1.service - ethtool configuration for eno1
Loaded: loaded (/etc/systemd/system/ethtool@.service; enabled; vendor preset: disabled)
Active: inactive (dead) since Do 2015-12-03 23:28:04 CET; 17s ago
Process: 359 ExecStart=/usr/bin/ethtool -s %i speed 10 duplex full (code=exited, status=0/SUCCESS)
Main PID: 359 (code=exited, status=0/SUCCESS)
Dez 03 23:28:04 archlinux systemd[1]: Starting ethtool configuration for eno1...
Dez 03 23:28:04 archlinux ethtool[359]: Cannot get current device settings: No such device
Dez 03 23:28:04 archlinux ethtool[359]: not setting speed
Dez 03 23:28:04 archlinux ethtool[359]: not setting duplex
Dez 03 23:28:04 archlinux systemd[1]: Started ethtool configuration for eno1.
Why does ethtool complain, that the device doesn't exist? I tried starting the service later (multi-user.target) and tried to use %I instead of %i, but it doesn't work. When I execute the same command with the identifier replaced with eno1 it works without problems.
Last edited by blackout23 (2015-12-03 22:47:00)
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Perhaps your unit file is called before the interface is re-named.
Try adding these lines to the [Unit] section:
Requires=sys-subsystem-net-devices-%i.device
After=sys-subsystem-net-devices-%i.device
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Perhaps your unit file is called before the interface is re-named.
Try adding these lines to the [Unit] section:
Requires=sys-subsystem-net-devices-%i.device After=sys-subsystem-net-devices-%i.device
Well that worked! Thanks a lot!
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