[ovirt-users] Juniper vSRX Cluster on oVirt/RHEV

[FERNANDO FREDIANI]

Indeed, there is this problem wiht the virtio driver which creates this ,
sometimes huge bottleneck for machines tat do a fair amount of traffic.
Other than using DPDK OVS I would love to heard an alternative or a fix for
it. Currently being hit by this issue with no solution.

As you mention for a lab is fine but would be lovely to have a pretty
redundant scenario like this in production.
Fernando

2018-03-23 21:04 GMT-03:00 Charles Kozler <ckozleriii at gmail.com>:

> Truth be told I dont really know. What I am going to be doing with it is
> pretty much mostly some lab stuff and get working with VRF's a bit
>
> There is a known limitation with virtio backend driver uses interrupt mode
> to receive packets and vSRX uses DPDK - https://dpdk.readthedocs.io/
> en/stable/nics/virtio.html which in turn creates a bottleneck in to the
> guest VM. It is more ideal to use something like SR-IOV instead and remove
> as many buffer layers as possible with PCI passthrough
>
> One easier way too is to use DPDK OVS. I know ovirt supports OVS in later
> versions more natively so I just didnt go after it and I dont know if there
> is any difference between just regular OVS and DPDK OVS. I dont have a huge
> requirement of insane throughput, just need to get packets from amazon back
> to my lab and support overlapping subnets
>
> This exercise was somewhat of a POC for me to see if it can be done. A lot
> of Junipers documentation does not take in to account such things as ovirt
> or proxmox or any linux overlay to hypervisors like it does for vmware /
> vcenter which is no fault of their own. They assume flat KVM host (or 2 if
> clustered) whereas stuff like ovirt can introduce variables (eg: no MAC
> spoofing)
>
> On Fri, Mar 23, 2018 at 3:27 PM, FERNANDO FREDIANI <
> fernando.frediani at upx.com> wrote:
>
>> Out of curiosity how much traffic can it handle running in these Virtual
>> Machines on the top of reasonable hardware ?
>>
>> Fernando
>>
>> 2018-03-23 4:58 GMT-03:00 Joop <jvdwege at xs4all.nl>:
>>
>>> On 22-3-2018 10:17, Yaniv Kaul wrote:
>>>
>>>
>>>
>>> On Wed, Mar 21, 2018 at 10:37 PM, Charles Kozler <
>>> <ckozleriii at gmail.com>ckozleriii at gmail.com> wrote:
>>>
>>>> Hi All -
>>>>
>>>> Recently did this and thought it would be worth documenting. I couldnt
>>>> find any solid information on vsrx with kvm outside of flat KVM. This
>>>> outlines some of the things I hit along the way and how to fix. This is my
>>>> one small way of giving back to such an incredible open source tool
>>>>
>>>> https://ckozler.net/vsrx-cluster-on-ovirtrhev/
>>>>
>>>
>>> Thanks for sharing!
>>> Why didn't you just upload the qcow2 disk via the UI/API though?
>>> There's quite a bit of manual work that I hope is not needed?
>>>
>>> @Work we're using Juniper too and oud of curiosity I downloaded the
>>> qcow2 image and used the UI to upload it and add it to a VM. It just works
>>> :-) oVirt++
>>>
>>> Joop
>>>
>>>
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