That would be one way.
However, since it actually is a majority of the instance types[1] that support this feature, I'd vote to make it the default.That's unless it prevents using/booting the "small" instances of course,
what AFAIK isn't the case --- I was able to create a snapshot ami from an F21 instance,
register it with the sriov flag and boot both a t2 and an r3 instances without any issue and confirmed the sriov flag was in effect on the r3 instance.
The only limit I know of is the ami has to be HVM[2].
Moreover, the feature is for free, no extra charges apply so why not to take advantage of lower latencies on the instances.The only limit I know of is the ami has to be HVM[2].
[1] Enhanced Networking Support, The Instance Types Matrix, http://aws.amazon.com/ec2/instance-types/
[2] Enabling Enhanced Networking on Other Linux Distributions, http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html
2015-03-19 18:39 GMT+01:00 Garrett Holmstrom <gholms@xxxxxxxxxxxxxxxxx>:
On 2015-03-19 9:11, milanisko k wrote:
I'd like to ask about the status/plan of SriovNet support[1] for Fedora
Amazon images.
I was able to set this up manually for recent F21 ami ami-5cd9ea41, but
it is quite an inconvenient experience --- one has to instantiate, stop,
set attribute value through the CLI tool and start again to enable the
feature.
Would it be possible to register future Fedora amis with the enhanced
networking flag enabled[1]?
As far as motivation is concerned, please check the blog post[2] for
some performance evaluation.
Since that only works for some types of instances it wouldn't make sense to do that for all images, but registering a separate image (from the same bundle/snapshot) with that enabled would be reasonable.
--
Garrett Holmstrom
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