[ovirt-users] Storage VLAN Issue

[Kendal Montgomery]

I finally got around to re-creating this scenario, only I did it with version 4.0.4 and I did not experience the same problem so I guess I would consider it fixed.

Thanks!

Kendal Montgomery
Lab Manager
Columbus Collaboratory
614-407-5584

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From: Edward Haas
Sent: Sunday, August 21, 3:00 AM
Subject: Re: [ovirt-users] Storage VLAN Issue
To: Kendal Montgomery
Cc: users at ovirt.org



On Wed, Aug 17, 2016 at 2:49 PM, Kendal Montgomery <kmontgomery at cbuscollaboratory.com<mailto:kmontgomery at cbuscollaboratory.com>> wrote:

Hi all,

I just recently started testing out oVirt in our lab.  I'm using CentOS 7 on my hosts and using the hosted-engine model, and the oVirt 3.6 repository.  I have NFS storage.  I ran across what I think is a bug of some sort, and I'm curious if anyone else has tried this or know what's going on.

I wanted to be able to expose the NFS server (not necessarily the share used for oVirt storage domains, but other shares on the NFS server) to VMs running on my host (currently my setup only involves a single host). I have two 10GbaseT interfaced bonded together on the hose with two VLAN networks on it currently, one for the management network, one for storage.  When the hosted-engine deployment was set up, I ended up with an ovirtmgmt interface that was bridged to my infrastructure vlan interface (vlan 1080).  So, I added another network in my oVirt cluster named VM-Storage with vlan 1092 (my storage network).  Here is approximately how I expected this to end up:

bond0 - (bonded interface)

  - bond0.1092 (STORAGE - vlan interface)

     - VM-storage (bridged interface)

  - bond0.1080 (INFR - van interface)

    - ovirtmgmt (bridged interface)

However, when I did network setup on the host, and dragged the VM-Storage network over to the network interface and hit OK, the UI just froze, and for a few seconds I checked on the host via ssh session and the VM-storage bridge was setup, then the server just rebooted.  After it rebooted, my vlan interface was no longer there and it seems like both the hosted engine VM and the host ended up being rebooted.  In thinking about it, I may have caused at least a temporary outage with my NFS storage when the new bridged interface was set up which caused (maybe) the HA agent to think the hosted engine vm went away or something, and that cause the reboots.  Not entirely sure, but this was certainly unexpected.  I have tried several times and the same result each time.

I did check that any other VM network with a different VLAN ID provisions just fine on the host, so I assume there's something that happens when this storage network is provisioned that is catching oVirt off-guard somehow.

Anyone else have this issue before?  Can I solve this by adding another host, then moving the hosted-engine to a different host while I add the storage network to each host?

Thanks.

Kendal Montgomery

Lab Manager

O: 614.407.5584<tel:614.407.5584> | M: 614.571.0172<tel:614.571.0172>

kmontgomery at cbuscollaboratory.com<mailto:kmontgomery at cbuscollaboratory.com>


Hi Kendal,

Please provide the logs from your host: Especially messages, vdsm.log and supervdsm.log.
ovirtmgmt network is set as a VLAN network in Engine? ( a screenshot of your network configuration on Engine may help)

Thanks,

Edy.


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