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Description of problem:
ifup fails, but claims to succeed.
This issue is a reproduction of BZ 1183728, but out of oVirt.

Version-Release number of selected component (if applicable):
initscripts-9.49.17-1.el7_0.1.x86_64
3.5.0-0.29.el6ev

Red Hat Enterprise Linux Server release 7.0 (Maipo)

How reproducible:
100

Steps to Reproduce:
1. Define ifcfg-bond0(2 slaves) with MTU 50000 (custom MTU that is not supported by host)
2. ifup bond0
3. Check if proper bond0 is created

Actual results:
Proper bond0 doesn't created, bond0 is broken, there is no slaves.
and ends without error.

cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
BONDING_OPTS='mode=4 miimon=100'
ONBOOT=no
NM_CONTROLLED=no
HOTPLUG=no
MTU=50000

echo $?  (after ifup bond0 command)
0

cat /sys/class/net/bond0/bonding/slaves
empty

cat /sys/class/net/bond0/
no slaves

ip a
bond0: <NO-CARRIER,BROADCAST,MULTICAST,MASTER,UP> mtu 50000 qdisc noqueue state DOWN

Expected results:
ifup command should succeed, and if not, then should be a proper error about this.

Additional info:
See also-  https://bugzilla.redhat.com/show_bug.cgi?id=1183728

When you have bond interface you expect that some of the slaves may fail and it is still OK, or they could be activated later. We can't change that behavior.

We could add a warning message, but that won't probably help in your case.

In Michael's case, *none* of the slaves were activated. In my opinion, this should be considered an error case.

After some thinking, I have just added the warning message. The bond gets up just fine, the fact that it does not have any slave is something different (they could be added for example by hand later.)

https://git.fedorahosted.org/cgit/initscripts.git/commit/?h=rhel7-branch&id=8fd278b052b0e4882887c393a102dd453803b477

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2134.html