Goal

• Replace TopoLVM
• Reduce pod footprint to 2, one controller, one daemonset - not possible with the current architecture
• Reduce the number of containers, max 6 - not possible with the current architecture
•  

Why is this important?

• Because TopoLVM checks the available storage through a controller instead of through a node local mechanism, there's a race condition which manifests as incorrect storage availability being reported. Fixing this would require rearchitecting TopoLVM or implementing our own CSI driver.
• Difficult to make upstream changes - our goals don't align with the upstream project.
• MicroShift needs the ability to revive LVs created by a CSI driver when a backup/restore happens. (Implementation detail - use LVM tags on the created LVs)

Scenarios

1. ...

Acceptance Criteria

• CI - MUST be running successfully with tests automated

• Release Technical Enablement
• ...

Dependencies (internal and external)

1. ...

Previous Work (Optional):

1. …

Open questions:

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Done Checklist

• CI -  CI is running, tests are automated and merged.
• Release Technical Enablement <link to Feature Enablement Presentation>
• Upstream code and tests merged: <link to meaningful PR or GitHub Issue>
• Upstream documentation merged: <link to meaningful PR or GitHub Issue>
• Downstream build attached to advisory: <link to errata>
• Test plans in Polarion: <link or reference to Polarion>
• Automated tests merged: <link or reference to automated tests>
• Downstream documentation merged: <link to meaningful PR>