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LVMInit

This project was created to prepare disks for TopoLVM running in Talos Linux

Inspired by lvm-disk-watcher and csi-driver-lvm

lvminit is an LVM initialization and automation tool designed for Kubernetes clusters, supporting creation and destruction of LVM volume groups on block devices (including loop devices for test/dev use). It can be run as a DaemonSet and is fully testable with Kind and Bats for E2E scenarios, including resizing and destruction of LVM groups.

Features

  • Automated LVM Initialization: Creates physical volumes and volume groups on specified block devices.
  • Destruction Mode: Removes specified LVM volume groups and associated physical volumes when configured.
  • Loop Device Support: Designed for use with loopback devices for local or CI-based testing.
  • Resizing: Detects device size increases and grows PVs automatically.
  • JSON Logging: Emits structured logs for better parsing/debugging.
  • Comprehensive E2E Tests: Test lifecycle with Bats, Kind, and Helm integration.

Usage Overview

  1. Build lvminit: 
    make build
# or
GOOS=linux CGO_ENABLED=0 go build -o lvminit main.go

TODO: improve local e2e mounting loop devices