[ovirt-users] Clone / New VM from Template changing network interfaces

[Pavel Gashev]

Solution:
http://www.ovirt.org/OVirt_Administration_Guide#Sealing_a_Linux_Virtual_Machine_for_Deployment_as_a_Template


From: <users-bounces at ovirt.org<mailto:users-bounces at ovirt.org>> on behalf of Mark Steele <msteele at telvue.com<mailto:msteele at telvue.com>>
Date: Friday 5 February 2016 at 15:07
To: "users at ovirt.org<mailto:users at ovirt.org>" <users at ovirt.org<mailto:users at ovirt.org>>
Subject: [ovirt-users] Clone / New VM from Template changing network interfaces

oVirt Engine Version: 3.5.0.1-1.el6

When cloning or creating a new vm, the network interfaces in /etc/udev/rules.d/70-persistent-net.rules is getting changed - rendering the new new VM un-networkable.

The original file looks like this:

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:04.0/virtio1 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:04", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth1"

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:03.0/virtio0 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:03", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:05.0/virtio2 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:05", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth2"

However, once the VM is either cloned or a new VM created from a template of this source VM, the file looks like this:

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:04.0/virtio1 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:04", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth1"

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:03.0/virtio0 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:03", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:05.0/virtio2 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:05", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth2"

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:04.0/virtio1 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:10", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth3"

# PCI device 0x1af4:/sys/devices/pci0000:00/0000:00:03.0/virtio1 (virtio-pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR(address)=="00:01:a4:a2:b4:0f", ATTR(dev_id)=="0x0", ATTR(type)=="1", KERNEL=="eth*", NAME="eth5"

The 'correct' interfaces are still there, but out of sequence and there are two additional interfaces that do not belong there.

Ovirt admin console is showing the correct number of interfaces as seen in this image:

[Inline image 3]

***
Mark Steele
CIO / VP Technical Operations | TelVue Corporation
TelVue - We Share Your Vision
800.885.8886 x128 | msteele at telvue.com<mailto:msteele at telvue.com> | http://www.telvue.com<http://www.telvue.com/>
twitter: http://twitter.com/telvue | facebook: https://www.facebook.com/telvue
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