Sankofa/docs/infrastructure/r630-01-disk-layout.md

R630-01 Disk Layout Reference

Overview

This document describes the disk layout for the R630-01 Proxmox VE host based on lsblk output.

Disk Inventory

System Disk: /dev/sda (279.4G)

• Type: System/OS disk with LVM
• Partitions:
  • sda1: 1007K (BIOS boot partition)
  • sda2: 1G (EFI boot partition, mounted at /boot/efi)
  • sda3: 278G (LVM physical volume)
• LVM Volumes:
  • pve-swap: 8G (swap)
  • pve-root: 79.5G (root filesystem, mounted at /)
  • pve-data: 171G (Proxmox data storage)
• Status: ✅ Active system disk
• Usage: Proxmox VE host OS and base storage

Secondary Disk: /dev/sdb (279.4G)

• Type: Standalone LVM physical volume (not in volume group)
• Partitions: None (has LVM2_member signature)
• Status: ✅ Available for use (needs LVM signature removal for Ceph)
• Model: HUC106030CSS600
• Recommendations:
  • Ceph OSD (wipe LVM signature first)
  • Proxmox storage pool
  • Backup storage

Ceph Candidate Disks: /dev/sdc through /dev/sdh (6x 232.9G)

• Type: SSDs - Ready for Ceph OSDs
• Model: CT250MX500SSD1 (Crucial MX500)
• Size: ~232.9G each
• Total Capacity: ~1.4TB
• Status: ✅ All 6 disks available (no partitions, unmounted)
• Typical Usage: Ceph OSD nodes for distributed storage

Disk Layout Summary

sda (279.4G) - System Disk
├─ sda1 (1007K) - BIOS boot
├─ sda2 (1G) - EFI boot [/boot/efi]
└─ sda3 (278G) - LVM PV
   ├─ pve-swap (8G)
   ├─ pve-root (79.5G) [/]
   └─ pve-data (171G)

sdb (279.4G) - Available

sdc-sdh (6x 232.9G) - Storage/Ceph candidates

Storage Recommendations

For Ceph OSD Setup (Recommended)

Quick Setup (Automated):

# Run on r630-01 directly
./scripts/setup-ceph-osds-r630.sh

# Or run remotely
./scripts/run-ceph-osd-setup-remote.sh L@kers2010

# To include sdb disk as well
./scripts/run-ceph-osd-setup-remote.sh L@kers2010 --include-sdb

Manual Setup:

1. Verify disk status: Run analyze-r630-disk-layout.sh
2. Wipe disks (if needed): wipefs -a /dev/sdX
3. Create OSDs: ceph-volume lvm create --data /dev/sdX
4. Verify: ceph osd tree

What the automated script does:

• Checks prerequisites (Ceph installed, cluster accessible)
• Verifies all 6 SSDs (sdc-sdh) are available
• Optionally prepares sdb (removes LVM signature)
• Creates OSDs on all available disks
• Enables and starts OSD services
• Verifies Ceph health and OSD status

For Proxmox Storage

1. Format disks: Use format-ssds-and-check-proxmox.sh
2. Add to Proxmox: Datacenter > Storage > Add
3. Choose type: Directory, LVM, or ZFS

For Mixed Use

• Use sdb for Proxmox storage
• Use sdc-sdh for Ceph OSDs
• Keep sda as system disk

Related Scripts

Analysis & Verification

• scripts/analyze-r630-disk-layout.sh - Comprehensive disk analysis
• scripts/check-proxmox-storage.sh - Quick Proxmox storage check
• scripts/verify-r630-disks.sh - Disk verification for Ceph

Ceph OSD Setup

• scripts/setup-ceph-osds-r630.sh - Main setup script (run on r630-01)
• scripts/run-ceph-osd-setup-remote.sh - Remote execution helper
• scripts/create-ceph-osds-all-drives.sh - Alternative OSD creation script
• scripts/create-all-osds-efficient.sh - Efficient OSD creation

Proxmox Storage

• scripts/format-ssds-and-check-proxmox.sh - Format disks for Proxmox

Notes

• All disk sizes are approximate (decimal vs binary)
• Check actual status with lsblk or analysis script
• Always verify before making changes to disk layout
• Backup important data before repartitioning