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These changes have all merged and taken effect. Ironic and IPA gate jobs 
are now operating as mentioned below, with one change; during review it 
was decided to lower the amount of ram per node to 384mb instead of 
512mb of RAM. This will ensure that we don't add additional bloat to 
TinyIPA ramdisks without gate jobs indicating it via failure. If anyone 
sees any strange behavior in the gate as a result, feel free to ping me 
on IRC.


The remaining pending change is https://review.openstack.org/#/c/323994/ 
in order to enable similar changes for ironic-inspector jobs. Your 
review attention on this is appreciated; it's a simple one word change.

Thanks to everyone's hard work on getting TinyIPA support working. This 
is a big step towards making our CI work faster and use less resources.

Thanks,
Jay Faulkner (JayF)
OSIC

On 5/12/16 8:54 AM, Jay Faulkner wrote:
>
> Hi all,
>
>
> A change (https://review.openstack.org/#/c/313035/) to Ironic 
> devstack is in the gate, changing the default ironic-python-agent 
> (IPA) ramdisk from CoreOS to TinyIPA, and changing iPXE to default 
> enabled.
>
>
> As part of the work to improve and speed up gate jobs, we determined 
> that using iPXE speeds up deployments and makes them more reliable by 
> using http to transfer ramdisks instead of tftp. Additionally, 
> the TinyIPA image, in development over the last few months, uses less 
> ram and is smaller, allowing faster transfers and more simultaneous 
> VMs to run in the gate.
>
>
> In addition to changing the devstack default, there's also a patch up: 
> https://review.openstack.org/#/c/313800/ to change most Ironic jobs to 
> use iPXE and TinyIPA. This change will make IPA have voting check jobs 
> and tarball publishing jobs for supported ramdisks (CoreOS and 
> TinyIPA). Ironic (and any other projects other than IPA) will use the 
> publicly published tinyipa image.
>
>
> In summary:
>
> *- Devstack changes (merging now):*
>
> **- Defaults to TinyIPA ramdisk
>
>   - Defaults to iPXE enabled
>
> *- Gate changes (needs review at: 
> https://review.openstack.org/#/c/313800/ )*
>
>   - Ironic-Python-Agent
>
>     - Voting CoreOS + TinyIPA source (ramdisk built on the fly jobs)
>
>   - Ironic
>
>     - Change all jobs (except bash ramdisk pxe_ssh job) to TinyIPA
>
>     - Change all jobs but one to use iPXE
>
>     - Change all gate jobs to use 512mb of ram
>
>
> If there are any questions or concerns, feel free to ask here or in 
> #openstack-ironic.
>
>
> P.S. I welcome users of the DIB ramdisk to help make a job to run 
> against IPA. All supported ramdisks should be checked in IPA's gate to 
> avoid breakage as IPA is inherently dependent on its environment.
>
>
>
> Thanks,
>
> Jay Faulkner (JayF)
>
> OSIC
>
>
>
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