Re: [libvirt] LXC: autostart feature does set all interfaces to state up.

Richard, I think you should have cc'd the bug assignee when discussing this issue upstream. Adding him now...

Regards, Jim Daniel P. Berrange wrote: > On Wed, Jul 17, 2013 at 11:33:22PM +0200, Richard Weinberger wrote: > >> Am 12.07.2013 03:36, schrieb Gao feng: >> >>> On 07/11/2013 07:58 PM, Richard Weinberger wrote: >>> >>>> Am 11.07.2013 11:49, schrieb Daniel P. Berrange: >>>> >>>>> On Thu, Jul 11, 2013 at 11:44:48AM +0200, Richard Weinberger wrote: >>>>> >>>>>> Am 11.07.2013 11:42, schrieb Gao feng: >>>>>> >>>>>>> On 07/11/2013 03:18 PM, Richard Weinberger wrote: >>>>>>> >>>>>>>> This morning I've installed a wrapper around ip to show me the process tree upon ip link ... down is used. >>>>>>>> The log showed this: >>>>>>>> >>>>>>>> 769 ? Ss 0:00 /usr/lib/systemd/systemd-udevd >>>>>>>> 17759 ? S 0:00 \_ /usr/lib/systemd/systemd-udevd >>>>>>>> 17764 ? S 0:00 \_ /usr/lib/systemd/systemd-udevd >>>>>>>> 17772 ? S 0:00 \_ /usr/lib/systemd/systemd-udevd >>>>>>>> 19477 ? S 0:00 | \_ /bin/bash /sbin/ifdown veth5 -o hotplug >>>>>>>> 19910 ? S 0:00 | \_ /sbin/ip link set dev veth5 down >>>>>>>> >>>>>>>> Now I have to urge to use a "Kantholz". ;-) >>>>>>>> >>>>>>>> >>>>>>> hmmm... >>>>>>> >>>>>>> it's systemd... I have no idea now... :( >>>>>>> >>>>>> TBH it is not systemd's fault. >>>>>> OpenSUSE's /usr/lib/udev/rules.d/77-network.rules did not white list veth* devices. >>>>>> Therefore systemd-udevd called ifup/down and other hotplug magic. >>>>>> >>>>> Ah ha, that's a nice issue :-) I assume you've filed a bug against opensuse >>>>> to fix this ? Can you post a link to the bug here for the sake of archive >>>>> records. >>>>> >>>> Sure: >>>> https://bugzilla.novell.com/show_bug.cgi?id=829033 >>>> >>>> >>> It's good news we know what causes veth device down. :) >>> >> How does Fedora deal with veth devices? >> > > Well the udev script you mention above does not exist on Fedora and AFAIK > there's no other udev script which runs 'ifconfig down' on NICs. > > >> SUSE folks think that this is a more likely a libvirt issue and closed my bug report as invalid... >> > > If you remove or modify the 77-network.rules file does it fix the problem. > If so, then it is obviously not a libvirt issue. IMHO it is completely > bogus for udev to be arbitrarily ifdown'ing any interface. > > Daniel >