[arch-general] Problem bringing up bridge interface with netctl

[Michael Dahlberg]

On Sun, Sep 29, 2013 at 3:44 PM, Leonid Isaev <lisaev at umail.iu.edu> wrote:

> On Sat, 28 Sep 2013 20:59:02 -0400
> Michael Dahlberg <olgamirth at gmail.com> wrote:
>
> > I recently upgraded to systemd-207 and I'm having some problems using
> > netctl to bring up a bridged interface during the system boot.  The
> problem
> > is that systemd will try and bring the bridged interface up before
> bringing
> > up the actual network interface that is included in the bridge and, as a
> > result, it times out:
> >
> > (From journalctl)
> >
> > Sep 27 23:59:34 io systemd[1]: Job
> > sys-subsystem-net-devices-net1.710.device/start timed out.
> > Sep 27 23:59:34 io systemd[1]: Timed out waiting for device
> > sys-subsystem-net-devices-net1.710.device.
> > Sep 27 23:59:34 io systemd[1]: Dependency failed for Bridge Connections
> for
> > VLAN710 VMs.
> >
> >
> > The netctl bridge profile is
> >
> > Description="Bridge Connections for VLAN710 VMs"
> > Interface=br710
> > Connection=bridge
> > BindsToInterfaces=(net1.710)
> > IP="no"
> >
> > The systemd service definition (netctl at br710.service)
> >
> > .include /usr/lib/systemd/system/netctl at .service
> >
> > [Unit]
> > Description=Bridge Connections for VLAN710 VMs
> > BindsTo=sys-subsystem-net-devices-net1.710.device
> > After=sys-subsystem-net-devices-net1.710.device
> >
> > And the profile for net1.710 is
> >
> > Description='VLAN 710 VMs'
> > Interface=net1.710
> > Connection=vlan
> > # The variable name is plural, but needs precisely one interface
> > BindsToInterfaces=net1
> > VLANID=710
> > IP=no
> >
> >
> > As soon as systemd times out waiting for the
> > sys-subsystem-net-devices-net1.710 device to start, it then starts to
> bring
> > up the VLAN interface (again from journalctl):
> >
> > Sep 27 23:59:35 io network[376]: Starting network profile 'vlan710'...
> > Sep 27 23:59:37 io kernel: e1000e: net1 NIC Link is Up 100 Mbps Full
> > Duplex, Flow Control: None
> > Sep 27 23:59:37 io network[376]: Started network profile 'vlan710'
> > Sep 27 23:59:37 io systemd[1]: Started VLAN 710 VMs.
> >
> >
> > Obviously, once I have access to the terminal I can manually bring up the
> > bridge without problems.
> >
> > I seem to have an issue with the timing with which the different parts of
> > the network interfaces are brought up.  Is there a way to force systemd
> to
> > bring up the net1.710 device before attempting to start the bridge?
>
> Uhh... modify "netctl at br710.service" to require the unit for net1.710,
> e.g.
>
> [Unit]
> Requires=<unit>
> After=<unit>
>
>
Hey! Thank you very much; that worked!

I honestly thought that the lines

BindsTo=sys-subsystem-net-devices-net1.710.device
After=sys-subsystem-net-devices-net1.710.device

which were automatically generated by netctl, would do just that.

Mike