[releng] Issue #7344: Please generate static deltas for FAW27

[Colin Walters]

walters reported a new issue against the project: `releng` that you are following:
``
ostree has had static deltas for years now; it makes us look less than stellar if people
aren't getting them.  We do this as part of the FAH release process, but at the moment
there is no such thing for FAW which just drops out of pungi.  Simplest thing is probably
to add it to Ansible for now, literally just `ostree --repo=/path/to/repo static-delta
generate --if-not-exists fedora/27/x86_64/workstation`.  (However, the benefits of deltas
will be greatly maximized if we batch updates)
``

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https://pagure.io/releng/issue/7344

[Kellin]

kellin added a new comment to an issue you are following:
``
@walters we discussed this in the release engineering channel this morning.

A daily delta probably doesn't make sense - what tempo did you have in mind for static
deltas?
``

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https://pagure.io/releng/issue/7344

[Dusty Mabe]

dustymabe added a new comment to an issue you are following:
``
>  A daily delta probably doesn't make sense 
>  
Yes, This is a whole topic. Basically for FAH we have a clear delineation of releases so
that we can know good logical start and end points. With FAW we don't currently have
that. Most days there isn't much change in the content in FAW because of batched
updates, but it does happen often enough that bodhi users select to go directly to stable
rather than batched that it's not reliable.

 We could do some smart things like use the `fedora/27/x86_64/updates/workstation` ref for
normal daily composes and then only update `fedora/27/x86_64/workstation` once there was a
security fix **OR** a batched compose completes. When we update
`fedora/27/x86_64/workstation` we would also generate a static delta.

The above is the only logical way I see to get something useful without making it more
complicated. 
``

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https://pagure.io/releng/issue/7344

[Colin Walters]

walters added a new comment to an issue you are following:
``
>  A daily delta probably doesn't make sense -
>  
But there aren't updates every day for FAW!   Remember rpm-ostree (unlike every other
image system run by pungi) has built-in change detection.  And in practice a lot of things
are in the bodhi batches.

There's a ticket somewhere where we did an analysis...it was something like an update
roughly every 2-3 days, and with not too much effort could be a lot closer to the weekly
batch if we were a bit more aggressive on pushing back against non-batched updates for FAW
content in Bodhi.


``

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https://pagure.io/releng/issue/7344

[Colin Walters]

walters added a new comment to an issue you are following:
``
However, this all blocks on the [pungi fix](https://pagure.io/pungi/pull-request/828)
being deployed; from just today's update:

```
# rpm-ostree status
State: idle; auto updates disabled
Deployments:
  ostree://fedora-27:fedora/27/x86_64/workstation
                   Version: 27.79 (2018-02-21 18:21:23)
                BaseCommit:
f790540bd8b3aca3fb3ec4b5afb2598d04b0928e6279ebdd41fe145e4319e5aa
              GPGSignature: Valid signature by 860E19B0AFA800A1751881A6F55E7430F5282EE4
           LayeredPackages: cri-o emacs fuse-sshfs git-evtag gstreamer1-plugin-openh264
keepassx krb5-workstation libvirt-client mozilla-openh264 oci-kvm-hook opensc
origin-clients pcsc-lite-ccid powerline
                            strace tmux vagrant-libvirt virt-manager xsel ykclient
ykpers
             LocalPackages: podman-0.2-3.git3d0100b.fc27.x86_64

● ostree://fedora-27:fedora/27/x86_64/workstation
                   Version: 27.78 (2018-02-20 16:50:04)
                BaseCommit:
06d0a2129f0c8924aa7d32285bc8ce819def7f68f0498cadab22e8df50260dd8
              GPGSignature: Valid signature by 860E19B0AFA800A1751881A6F55E7430F5282EE4
           LayeredPackages: cri-o emacs fuse-sshfs git-evtag gstreamer1-plugin-openh264
keepassx krb5-workstation libvirt-client mozilla-openh264 oci-kvm-hook opensc
origin-clients pcsc-lite-ccid powerline
                            strace tmux vagrant-libvirt virt-manager xsel ykclient
ykpers
             LocalPackages: podman-0.2-3.git3d0100b.fc27.x86_64
# ostree show --raw
f790540bd8b3aca3fb3ec4b5afb2598d04b0928e6279ebdd41fe145e4319e5aa|less
...
rpmostree.rpmmd-repos': <[{'id':
<'Fedora-27-updates-20180221.0-Everything-20180221180240'>,
'timestamp': <uint64 1519235983>}, {'id':
<'https:__kojipkgs.fedoraproject.org_compose_27_latest-Fedora-27_compose_Everything__basearch_os_-20180221180240'>,
#
```


``

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https://pagure.io/releng/issue/7344

[Suzanne Yeghiayan]

syeghiay added a new comment to an issue you are following:
``
@mohanboddu plans to bring this up in the Mar 14 releng meeting.
``

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[Dusty Mabe]

dustymabe added a new comment to an issue you are following:
``
I'd say let's drop this. We've got too much other stuff going on. 
``

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https://pagure.io/releng/issue/7344

[Mohan Boddu]

The status of the issue: `Please generate static deltas for FAW27` of project: `releng`
has been updated to: Closed as Get back later by mohanboddu.

https://pagure.io/releng/issue/7344

[Mohan Boddu]

mohanboddu added a new comment to an issue you are following:
``
Closing it for now and we will look at it later.
``

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