Enable enaSupport attribute on EC2 AMIs
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
cloud-images |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
The Ubuntu kernel now ships with the AWS ENA driver (see bug #1635721) for enhanced networking on the most recent EC2 instance types. However, this driver is never used because the "EnaSupport" attribute is not set in the AMIs.
Instances with ENA do not support the Intel 82599 VF driver, so these instances will fall back to the default and slow "vif" driver.
$ curl http://
r4.2xlarge
$ modinfo ena
filename: /lib/modules/
version: 1.0.2
license: GPL
description: Elastic Network Adapter (ENA)
author: Amazon.com, Inc. or its affiliates
srcversion: 881520E877FD288
alias: pci:v00001D0Fd0
alias: pci:v00001D0Fd0
alias: pci:v00001D0Fd0
alias: pci:v00001D0Fd0
depends:
intree: Y
vermagic: 4.4.0-62-generic SMP mod_unload modversions
parm: debug:Debug level (0=none,...,16=all) (int)
$ ethtool -i eth0
driver: vif
version:
firmware-version:
expansion-
bus-info: vif-0
supports-
supports-test: no
supports-
supports-
supports-
$ aws ec2 describe-images --image-ids ami-98ecb7fe --query "Images[
[]
Hi José,
Thanks for reporting this bug! We're currently working through the changes required to our publication infrastructure to make this happen, but rest assured that this will be coming soon.
Thanks,
Dan