[Bug 1073820] Re: ifdown/ifup of bond interface does not add slaves

[Launchpad Bug Tracker]

This bug was fixed in the package ifenslave-2.6 - 1.1.0-20ubuntu3

---------------
ifenslave-2.6 (1.1.0-20ubuntu3) raring; urgency=low

  * Update documentation to match the way ifenslave-2.6 works in Ubuntu.
    (LP: #1087876, LP: #1073820)
  * Don't use seq in pre-up as it's in /usr, instead replace by a while
    loop. (LP: #1065077)
 -- Stephane Graber <stgraber at ubuntu.com>   Tue, 11 Dec 2012 11:38:07 -0500

** Changed in: ifenslave-2.6 (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1073820

Title:
  ifdown/ifup of bond interface does not add slaves

Status in “ifenslave-2.6” package in Ubuntu:
  Fix Released

Bug description:
  Release: Ubuntu 12.04
  ifenslave-2.6                    1.1.0-19ubuntu5 

  At boot time bonding interfaces are activated fine. But if I manually
  ifdown the bonding interface and subsequently ifup it againt the
  physical network cards are not enslaved.

  I use the following configuration:
  auto extern
  iface extern inet static
          address 192.168.0.5
          netmask 255.255.255.0
          bond-mode 1
          bond-miimon 100
          bond-slaves none

  auto eth0
  allow-extern eth0
  iface eth0 inet manual
          bond-master extern

  auto eth2
  allow-extern eth2
  iface eth2 inet manual
          bond-master extern

  Situation after boot:
  # cat /proc/net/bonding/extern
  Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

  Bonding Mode: fault-tolerance (active-backup)
  Primary Slave: None
  Currently Active Slave: eth0
  MII Status: up
  MII Polling Interval (ms): 100
  Up Delay (ms): 0
  Down Delay (ms): 0

  Slave Interface: eth0
  MII Status: up
  Speed: 1000 Mbps
  Duplex: full
  Link Failure Count: 0
  Permanent HW addr: 00:26:2d:05:37:2f
  Slave queue ID: 0

  Slave Interface: eth2
  MII Status: up
  Speed: 1000 Mbps
  Duplex: full
  Link Failure Count: 0
  Permanent HW addr: 00:15:17:f6:ec:d9
  Slave queue ID: 0

  When issuing ifdown and subsequently ifup the following is displayed:
  # ifup extern
  Waiting for a slave to join extern (will timeout after 60s)
  No slave joined extern, continuing anyway
  Failed to bring up extern.

  By the way, replacing extern with a typical bonding-device name as
  bond1 does not change the behaviour.

  Adding 
  bond-primary eth0 eth2 
  to all stanzas does not change the behavior.

  Changing bond-slaves to 
  bond-slaves eth0 eth2
  does not change the behaviour. README.Debian states that if both bond-master and bond-slaves is used bond-slaves is ignored.

  The only way to correct the behaviour is to manually ifup eth0 and ifup eth2. I thought this is the responsibility of the 
  allow-extern eth0/eth2
  lines.

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