Bug 1410047

Summary: Enable Elastic Network Adapter (ENA) support for AWS images
Product: Red Hat Enterprise Linux 7 Reporter: Vitaly Kuznetsov <vkuznets>
Component: ec2-imagesAssignee: Joey Boggs <jboggs>
Status: CLOSED ERRATA QA Contact: Vratislav Hutsky <vhutsky>
Severity: high Docs Contact: Jiri Herrmann <jherrman>
Priority: high    
Version: 7.4CC: ailan, cheshi, jboggs, jboutaud, jgreguske, jnikolak, leiwang, linl, mkardeh, mtessun, vhutsky, vkuznets, wshi, xiliang
Target Milestone: rc   
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Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2017-08-28 12:37:24 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1357491    
Bug Blocks: 1411874    

Description Vitaly Kuznetsov 2017-01-04 10:32:51 UTC
A while ago Amazon added Elastic Network Adapter (ENA) support to their cloud:


Now, when guest image has the appropriate kernel driver and the feature is enabled for the image the ENA adapter will be passed to the VM instead of a PV one on the appropriate instance types (x1.*, p2.*,...). The kernel part was done in the following BZ:

The driver is ready to be merged to the kernel. The other piece of the puzzle is enabling ENA support for AWS images we produce. I'm not entirely sure about the tooling we use but with awscli it is done by passing '--ena-support' key to 'aws ec2 register-image' command. (please see https://bugzilla.redhat.com/show_bug.cgi?id=1357491#c6).

Comment 4 Lubos Kocman 2017-01-12 12:58:54 UTC
This definitely sounds like cloud-init package. Since I'm not aware of anything that I could pass over to image-build

Also kickstart doesn't do anything with aws directly

Moving to respective/default owner of cloud-init.

Thanks for undestanding


Comment 5 Vitaly Kuznetsov 2017-01-12 13:50:54 UTC
(In reply to Lubos Kocman from comment #4)
> Moving to respective/default owner of cloud-init.

Guys, this has nothing to do with cloud-init and the content of the image. Kickstart file is also not related.

When we create AWS images we create metadata for them. In this metadata, for example, we specify billing product. Then the metadata is uploaded to AWS and images are registered. I don't know which tools we use for image registration on AWS but what we need is to change the metadata of our images.

I'm moving back to releng and adding Jay Greguske to the CC: list, I'm not sure that he's in charge but he definitely knows how our AWS images are produced.

Comment 6 Joey Boggs 2017-01-12 14:02:17 UTC
I'll take this as it requires adding the --ena-support option into the rcm-aws tooling when it registers the AMI. There is nothing else needed in RHEL as long as the kernel modules are made available.

Comment 16 errata-xmlrpc 2017-08-28 12:37:24 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.