** Description changed: + [rationale] + With some specific configuration, the boot hangs for minutes in udev as ifupdown is waiting for an interface to show up. + + [test case] + - Use one of the configurations listed in this bug or its duplicate, boot the machine with it and observe it hanging for a couple of minutes. + - Apply the update + - Check that the machine now works much faster and that the interface is properly configured. + + [regression potential] + I can't see of a situation where someone would be depending on the broken behaviour which wouldn't in itself be a bug. The change landed fairly early in Ubuntu 12.10 and no regression has been reported so far. Worst case scenario, it's easy to revert. + + we're trying to migrate our network configuration from lucid to precise. in 10.04 we tied eth0+eth1 together into bond0, then set br0 up on top of that and assigned an address via dhcp. in 12.04 this only works if br0 is configured with a static ip address. it fails when trying to use dhcp. to simplify testing i've removed eth1 from the configuration (sanity checked against http://www.stgraber.org/2012/01/04/networking- in-ubuntu-12-04-lts/ ): auto lo iface lo inet loopback auto eth0 iface eth0 inet manual - bond-master bond0 + bond-master bond0 auto bond0 iface bond0 inet manual - bond-slaves none - bond-mode 802.3ad - bond-miimon 100 + bond-slaves none + bond-mode 802.3ad + bond-miimon 100 auto br0 iface br0 inet dhcp - bridge_ports bond0 - bridge_stp off + bridge_ports bond0 + bridge_stp off the above results in a system w/o network connectivity. the dhcp server reports requests from an unexpected mac addr (different each boot). udevd logs "timeout 'bridge-network-interface'". poking around a little before the timeout shows the following 2 groups of processes: - |-ifup,1361 --allow auto eth0 - | `-sh,1363 -c run-parts /etc/network/if-pre-up.d - | `-run-parts,1364 /etc/network/if-pre-up.d - | `-ifenslave,1392 /etc/network/if-pre-up.d/ifenslave - | `-sleep,2380 0.1 + |-ifup,1361 --allow auto eth0 + | `-sh,1363 -c run-parts /etc/network/if-pre-up.d + | `-run-parts,1364 /etc/network/if-pre-up.d + | `-ifenslave,1392 /etc/network/if-pre-up.d/ifenslave + | `-sleep,2380 0.1 - | |-udevd,599 --daemon - | | `-bridge-network-,1429 /lib/udev/bridge-network-interface - | | `-ifup,1457 --allow auto br0 - | | `-sh,1540 -c dhclient3 -e IF_METRIC=100 -pf /var/run/dhclient.br0.pid -lf /var/lib/dhcp/dhclient.br0.leases -1 br0 - | | `-dhclient3,1541 -e IF_METRIC=100 -pf /var/run/dhclient.br0.pid -lf /var/lib/dhcp/dhclient.br0.leases -1 br0 + | |-udevd,599 --daemon + | | `-bridge-network-,1429 /lib/udev/bridge-network-interface + | | `-ifup,1457 --allow auto br0 + | | `-sh,1540 -c dhclient3 -e IF_METRIC=100 -pf /var/run/dhclient.br0.pid -lf /var/lib/dhcp/dhclient.br0.leases -1 br0 + | | `-dhclient3,1541 -e IF_METRIC=100 -pf /var/run/dhclient.br0.pid -lf /var/lib/dhcp/dhclient.br0.leases -1 br0 the ifenslave appears to be looping over that `sleep` (testing for /run/network/ifenslave.bond0) until it is killed and the dhclient is making its request w/the unexpected mac addr (also reported in `ip link show br0`). interestingly br0's mac addr matches that of eth0 (as expected) once bridge-network-interface has timed out and been killed. a workaround appears to be adding the line: - pre-up /sbin/ifup --allow auto bond0 + pre-up /sbin/ifup --allow auto bond0 to the "auto br0" stanza. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: bridge-utils 1.5-2ubuntu6 ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16 Uname: Linux 3.2.0-24-generic x86_64 ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Wed May 23 13:44:43 2012 ProcEnviron: - TERM=xterm - PATH=(custom, user) - LANG=en_US.UTF-8 - SHELL=/usr/bin/zsh + TERM=xterm + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/usr/bin/zsh SourcePackage: bridge-utils UpgradeStatus: No upgrade log present (probably fresh install)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1003656 Title: bridge-utils/vlan udev hooks prevent execution of upstart hook, slowing down boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bridge-utils/+bug/1003656/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
