[Bug 1015199] Re: ifup does not work as documented with bonding interfaces

[Stéphane Graber]

It's not a bug. "ifup bond0" will configure the bond and wait until the
first slave joins to return, so it'll indeed "hang" but that's the
wanted behaviour.

If you need to reconfigure your bond, you need to call "ifdown" on all
bond members, then on the bond interface, change your config and then do
"ifup" on all the bond members and then on the bond interface.

Removing the auto statement from all the bond members will also make
ifup "hang" or rather wait for a minute and give up as the bond can't be
considered as up until it has at least one member (otherwise, it doesn't
have a MAC address which confuses a lot of other software).

** Changed in: ifenslave-2.6 (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1015199

Title:
  ifup does not work as documented with bonding interfaces

Status in “ifenslave-2.6” package in Ubuntu:
  Invalid

Bug description:
  The file /usr/share/doc/ifenslave-2.6/README.Debian.gz states:

  "Using ifup on a master interface will call ifup for all slaves that are
  flagged with allow-bondX. (bondX being replaced by the master interface
  name). This will allow for extra setup for special slave interfaces."

  However I'm using this /etc/network/interfaces file:

  # The bound interface 
  auto eth3
  allow-bond0 eth3
  iface eth3 inet manual
    bond-master bond0
    bond-primary eth3 eth4 eth5

  auto eth4
  allow-bond0 eth4
  iface eth4 inet manual
    bond-master bond0
    bond-primary eth3 eth4 eth5

  auto eth5
  allow-bond0 eth5
  iface eth5 inet manual
    bond-master bond0
    bond-primary eth3 eth4 eth5

  auto bond0 
  iface bond0 inet static
    address 10.1.1.125
    network 10.1.0.0
    netmask 255.255.0.0
    broadcast 10.1.255.255
    bond-mode balance-rr
    bond-slaves eth3 eth4 eth5
    bond-miimon 100
    bond-downdelay 200
    bond-updelay 200

  and issuing the 'ifup bond0' command I get:

  root@:~# ifup bond0
  Waiting for a slave to join bond0 (will timeout after 60s)
  No slave joined bond0, continuing anyway
  ssh stop/waiting
  ssh start/running, process 9610

  As you can see no slave interface has been started.

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