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https://ovirt-jira.atlassian.net/browse/OVIRT-2591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=38706#comment-38706
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Eyal Edri commented on OVIRT-2591:
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Few questions:
# Does it apply also to podman and buildha, assuming we'll move to them in a
few months?
# Can you estimate or measure how much time this setup will reduce from running
tests? it will have to be something significant to justify this kind of
improvement
Also, we probably want to put on hold any major infrastructure improvement (
that requires a significant amount of work/code ) until we'll know what are the
requirements to run it inside CentOS CI infra.
cc [[[email protected]][[email protected]][[email protected]]
> Add a distributed docker-cache
> ------------------------------
>
> Key: OVIRT-2591
> URL: https://ovirt-jira.atlassian.net/browse/OVIRT-2591
> Project: oVirt - virtualization made easy
> Issue Type: Improvement
> Reporter: Roman Mohr
> Assignee: infra
> Priority: High
>
> What?
> If CI builds get heavy and things are running inside containers, I expect
> that the CI system proactively tries to optimize when it can. Since the CI
> system provides the docker installation, I would expect that under some
> conditions, it automatically puts heavy docker builds in a distributed
> cache in the cluster. Examples on how this can achieved are listed in [1]
> and [2].
> Why?
> Dockerfiles have the advantage that we can isolate our biuld-steps in a
> Dockerfile. This gives reproducibility, but also means that e.g. curl
> downloads or RPM installs are not visible for the CI system. Therefore it
> is beneficial for the CI system and the user (more speed and less
> utilization), to put docker images with their build chain into a
> distributed cache and pre-fetch the cache into the docker cache of the
> build slot. Pre-fetching based on e.g. gibhub project probably makes sense.
> [1] https://runnable.com/blog/distributing-docker-cache-across-hosts
> [2] https://blog.codeship.com/building-a-remote-caching-system/
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