Refactor Drive Atlas with modular chassis templates and PCI path mapping

Major improvements:
- Separated chassis types from server hostnames for better reusability
- Implemented template-based layout system (10bay, large1, spare-10bay)
- Renamed medium2 to compute-storage-01 for clarity
- Added comprehensive PCI path-based drive mapping system
- Created diagnose-drives.sh helper script for mapping new servers
- Added DEBUG mode for troubleshooting drive mappings
- Documented Sliger CX471225 4U chassis model

Technical changes:
- Replaced DRIVE_MAPPINGS with separate SERVER_MAPPINGS and CHASSIS_TYPES
- Improved drive detection and SMART data collection
- Better error handling for missing drives and unmapped servers
- Cleaner code structure with sectioned comments

Documentation:
- Complete rewrite of README with setup guide and troubleshooting
- Added detailed todo.txt with action plan and technical notes
- Included step-by-step instructions for mapping new servers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

diagnose-drives.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# Drive Atlas Diagnostic Script
+# Run this on each server to gather PCI path information
+
+echo "=== Server Information ==="
+echo "Hostname: $(hostname)"
+echo "Date: $(date)"
+echo ""
+
+echo "=== All /dev/disk/by-path/ entries ==="
+ls -la /dev/disk/by-path/ | grep -v "part" | sort
+echo ""
+
+echo "=== Organized by PCI Address ==="
+for path in /dev/disk/by-path/*; do
+    if [ -L "$path" ]; then
+        # Skip partitions
+        if [[ "$path" =~ -part[0-9]+$ ]]; then
+            continue
+        fi
+
+        basename_path=$(basename "$path")
+        target=$(readlink -f "$path")
+        device=$(basename "$target")
+
+        echo "Path: $basename_path"
+        echo "  -> Device: $device"
+
+        # Try to get size
+        if [ -b "$target" ]; then
+            size=$(lsblk -d -n -o SIZE "$target" 2>/dev/null)
+            echo "  -> Size: $size"
+        fi
+
+        # Try to get SMART info for model
+        if command -v smartctl >/dev/null 2>&1; then
+            model=$(sudo smartctl -i "$target" 2>/dev/null | grep "Device Model\|Model Number" | cut -d: -f2 | xargs)
+            if [ -n "$model" ]; then
+                echo "  -> Model: $model"
+            fi
+        fi
+        echo ""
+    fi
+done
+
+echo "=== PCI Devices with Storage Controllers ==="
+lspci | grep -i "storage\|raid\|sata\|sas\|nvme"
+echo ""
+
+echo "=== Current Block Devices ==="
+lsblk -d -o NAME,SIZE,TYPE,TRAN | grep -v "rbd\|loop"
+echo ""
+
+echo "=== Recommendations ==="
+echo "1. Note the PCI addresses (e.g., 0c:00.0) of your storage controllers"
+echo "2. For each bay, physically identify which drive is in it"
+echo "3. Match the PCI path pattern to the bay number"
+echo "4. Example: pci-0000:0c:00.0-ata-1 might be bay 1 on controller 0c:00.0"