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zmc / ceph-devstack

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Why fuse-overlayfs #1

Closed phlogistonjohn closed 2 years ago

phlogistonjohn commented 2 years ago

I am curious about the storage.conf embedded in the sources and have a two part question: why does the project overirde the default storage settings and why does it use fuse-overlayfs.

For context, I think recent versions of podman with linux are supposed to benefit from kernel overlayfs even when rootless. See: https://www.redhat.com/sysadmin/podman-rootless-overlay for example.

So I'm wondering if you've hit an issue where kernel overlayfs wasn't working?

zmc commented 2 years ago

Good question! The short answer is: I was unaware native overlay was working! I'd been using podman's rootless tutorial and this blog post as guides, and apparently neither have been updated with that information.

I'm about to push changes to main that will use native overlay where available, and I'm updating our CentOS 9 image so that it has a new enough kernel.

Thanks!