Bug 142461

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Description of problem:
I configured the /etc/sysconfig/network-scripts/ifcfg-eth0-range0 file
so that it would setup a range of virtual interfaces the next time the
network service would be restarted. This worked fine. I then attempted
to bond my two interfaces, eth0 and eth1 to a new interface called
bond0, renaming ifcfg-eth0-range0 to ifcfg-bond0-range0. This is where
the problems started. 

Both interfaces bonded without complaint, however, when I would
restart the network service, the bond interface would not come online.
Actually, the bond0 interface I configured would say its up, as would
all the virtual (alias) interfaces I would configure, however both
eth0 and eth1 would be down. If I manually brought them up using
ifconfig then it all worked fine. 

I searched through the scripts and the problem seemed to be that
redhat was treating the virtual (alias) interfaces as actual devices
and trying to bring them up as such. This in turn was some how
knocking off eth0 and eth1 which would have already been brough up.
The lines which are responsible for identifying the virtual interfaces
as a device can be found in /etc/init.d/network :-


# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=`ls ifcfg* | LANG=C egrep -v
'(ifcfg-lo|:|rpmsave|rpmorig|rpmnew)' | \
            LANG=C egrep -v '(~|\.bak)$' | \
            LANG=C egrep 'ifcfg-[A-Za-z0-9\._-]+$' | \
            sed 's/^ifcfg-//g' |
            sed 's/[0-9]/ &/' | LANG=C sort -k 1,1 -k 2n | sed 's/ //'`


Once I added "range" to the "interfaces=..." line above it worked fine
because it skipped the file ifcfg-bond0-range0. It now looks like this :-

# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=`ls ifcfg* | LANG=C egrep -v
'(ifcfg-lo|:|rpmsave|rpmorig|rpmnew|range)' | \
            LANG=C egrep -v '(~|\.bak)$' | \
            LANG=C egrep 'ifcfg-[A-Za-z0-9\._-]+$' | \
            sed 's/^ifcfg-//g' |
            sed 's/[0-9]/ &/' | LANG=C sort -k 1,1 -k 2n | sed 's/ //'`


with the virtusl range instead being setup in the ifup-post by the line :-

/etc/sysconfig/network-scripts/ifup-aliases ${DEVICE} ${CONFIG}


So like I said, it works fine right now, but is this a bug? I am
worried perhaps I was just doing something wrong (I have trawled the
online resources and news groups and have found no one with the same
problem or solution, and no where that says you should be able to do
this). Can someone please confirm either way?

Thanks
Conor


Version-Release number of selected component (if applicable):
initscripts-7.31.7.EL

How reproducible:
Always

Steps to Reproduce:
1.Configure an alias range by creating a file such as
ifcfg-bond0-range0, contents, for example, look like this :-

IPADDR_START=172.16.1.30
IPADDR_END=172.16.1.49
CLONENUM_START=0
NETMASK=255.255.255.0

Test this works by either restarting the network service or using
ifup-aliases to bring the aliases up.

2. Now create the bond, calling it bond 0. Relevent files look as
follows :-

# cat ifcfg-bond0
DEVICE=bond0
IPADDR=172.16.1.133
NETMASK=255.255.255.0
BROADCAST=172.16.1.255
GATEWAY=172.16.1.1
ONBOOT=yes
BOOTPROTO=none

# cat ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
MASTER=bond0
SLAVE=yes
BOOTPROTO=none

# cat ifcfg-eth1
DEVICE=eth1
ONBOOT=yes
MASTER=bond0
SLAVE=yes
BOOTPROTO=none

Now restart the network services by runnign the command :-

# service network restart


3.You should see that bond0, along with all the virtual (alias)
interfaces are now configured and UP, however you will have no
connectivity as eth0 and eth1 are down. You can manually bring them up
by doing :-

# ifup eth0
# ifup eth1


4. Now make the edit i made above to /etc/init.d/network and restart
the network service again. It should work this time.

    

Actual Results:  All explained above.

Expected Results:  I would have expected all alias interfaces and the
bond to come on line with full connectivity to the rest of the network.

Additional info:

None. Should all be explained sufficently above.