[ovirt-users] Recommended bonding modes?

Yaniv Kaul ykaul at redhat.com
Mon May 23 12:59:41 UTC 2016

On Sun, May 22, 2016 at 10:33 PM, Alan Murrell <lists at murrell.ca> wrote:

> Hello,
> I am wondering what the recommended bonding modes are for the different
> types of networks:
>   - Management/Display
>   - Guest VM Traffic

0, 5, 6 are NOT supported over bridges (hence, for guest VM traffic)

  - Storage (NFS)

Unless you have multiple mounts (multiple NFS storage domains) you are
unlikely to get a bandwidth improvements, only HA from bond for NFS (in
that sense, it's better to use iSCSI in such a scenario)

> For the purposes pf this post, assume mode 4 is not available.
> For Management/Display, I am thinking mode 1 (active-backup) is adequate
> since there generally isn't a lot of traffic being pushed through.
> Storage, I like mode 0 (round robin) due to some performance results I
> have seen, though I understand this has to be setup in "custom bonding".
> Mode 6 seems like it would do well here as well.

As explained above, for NFS, it's not going to help performance-wise.

> Guest VM traffic is the one I am not sure about.  There could be a lot of
> traffic going back and forth, so I would want all the interfaces in the
> bond active to balance the load.  Of the supported bonding modes, either 2
> or 5 would seem to be the options.
> I am just wondering what others' thoughts and experiences are.
> Thanks! :-)
> Regards,
> Alan
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