[Openstack] veth pair disappear after hardware reboot

varun bhatnagar varun292006 at gmail.com
Thu Aug 27 13:03:36 UTC 2015


Hi,

I have OpenStack Juno installed on a multi-node step up. I have a cluster
running on that. In that cluster there are few VMs which are booting over
network from one of the VM. This works fine until I reboot my hardware.

As soon as the blades are rebooted I start my VMs, then, PXE boot doesn't
work. I did ovs-vsctl show before and after reboot and I can see a
difference in ports attached to the bridge (logs attached). The *veth*
pairs (qvoXXX) are getting disappeared after reboot.

Can anyone please suggest what could be done to avoid this?


BR,
Varun
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[root at compute0-5 ~]# ovs-vsctl show
 dc6db4b2-922e-4a9c-8614-0c6ee82e812b
 Bridge "tbr974f0285-eb"
 Port "tbr974f0285-eb"
 Interface "tbr974f0285-eb"
 type: internal
 Port "pvm974f0285-eb"
 Interface "pvm974f0285-eb"
 type: patch
 options: {peer="pin974f0285-eb"} 
Bridge "br-eth5"
 Port "phy-br-eth5"
 Interface "phy-br-eth5"
 type: patch
 options: 
{peer="int-br-eth5"} 
Port "br-eth5"
 Interface "br-eth5"
 type: internal
 Port "enp1s0f0"
 Interface "enp1s0f0"
 Bridge "tbr1d212424-7f"
 Port "pvm1d212424-7f"
 Interface "pvm1d212424-7f"
 type: patch
 options: 
{peer="pin1d212424-7f"} 
Port "tbr1d212424-7f"
 Interface "tbr1d212424-7f"
 type: internal
 Port "qvo1d212424-7f"
 Interface "qvo1d212424-7f"
 Bridge br-int
 fail_mode: secure
 Port br-int
 Interface br-int
 type: internal
 Port "pin974f0285-eb"
 Interface "pin974f0285-eb"
 type: patch
 options: 
{peer="pvm974f0285-eb"} 
Port "pin1d212424-7f"
 Interface "pin1d212424-7f"
 type: patch
 options: 
{peer="pvm1d212424-7f"} 
Port "int-br-eth5"
 Interface "int-br-eth5"
 type: patch
 options: 
{peer="phy-br-eth5"} 
ovs_version: "2.1.3"
 [root at compute0-5 ~]# 
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[root at compute0-5 ~]# ovs-vsctl show
 dc6db4b2-922e-4a9c-8614-0c6ee82e812b
 Bridge "tbr974f0285-eb"
 Port "tbr974f0285-eb"
 Interface "tbr974f0285-eb"
 type: internal
 Port "pvm974f0285-eb"
 Interface "pvm974f0285-eb"
 type: patch
 options: 
{peer="pin974f0285-eb"}
 Bridge br-int
 fail_mode: secure
 Port "qvo08561197-c3"
 tag: 82
 Interface "qvo08561197-c3"
 Port br-int
 Interface br-int
 type: internal
 Port "qvoeaa9306e-df"
 tag: 73
 Interface "qvoeaa9306e-df"
 Port "pin974f0285-eb"
 Interface "pin974f0285-eb"
 type: patch
 options: {peer="pvm974f0285-eb"}
 Port "int-br-eth5"
 Interface "int-br-eth5"
 type: patch
 options: {peer="phy-br-eth5"}
 Port "pin1d212424-7f"
 Interface "pin1d212424-7f"
 type: patch
 options: {peer="pvm1d212424-7f"}
 Bridge "tbr1d212424-7f"
 Port "pvm1d212424-7f"
 Interface "pvm1d212424-7f"
 type: patch
 options: {peer="pin1d212424-7f"}
 Port "tbr1d212424-7f"
 Interface "tbr1d212424-7f"
 type: internal
 Port "qvo1d212424-7f"
 Interface "qvo1d212424-7f"
 Bridge "br-eth5"
 Port "br-eth5"
 Interface "br-eth5"
 type: internal
 Port "enp1s0f0"
 Interface "enp1s0f0"
 Port "phy-br-eth5"
 Interface "phy-br-eth5"
 type: patch
 options: {peer="int-br-eth5"}
 ovs_version: "2.1.3"
 [root at compute0-5 ~]# 


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