Initial commit: Add interactive Borg vault and QCOW2 mounting scripts

mount_backup.sh

@@ -0,0 +1,138 @@
+#!/bin/bash
+
+# Script to mount Borg backup vault and qcow2 disk image
+# Created: 2025-10-07
+
+set -e  # Exit on error
+
+BORG_REPO="/data_storage/Backup/borg/srvfs01"
+BORG_MOUNT="/mnt/restore"
+QCOW2_MOUNT="/mnt/qcow2"
+QCOW2_FILE="vm-105-disk-3.qcow2"
+
+# Function to format date from backup folder name
+format_date() {
+    local folder=$1
+    # Extract date from folder name (e.g., vm105-20250904-145444 or vm105-20251006-020001)
+    if [[ $folder =~ vm[0-9]+-([0-9]{4})([0-9]{2})([0-9]{2})-([0-9]{6}) ]]; then
+        local year=${BASH_REMATCH[1]}
+        local month=${BASH_REMATCH[2]}
+        local day=${BASH_REMATCH[3]}
+        local time=${BASH_REMATCH[4]}
+        local hour=${time:0:2}
+        local minute=${time:2:2}
+        
+        # Convert month number to German month name
+        case $month in
+            01) month_name="Januar" ;;
+            02) month_name="Februar" ;;
+            03) month_name="März" ;;
+            04) month_name="April" ;;
+            05) month_name="Mai" ;;
+            06) month_name="Juni" ;;
+            07) month_name="Juli" ;;
+            08) month_name="August" ;;
+            09) month_name="September" ;;
+            10) month_name="Oktober" ;;
+            11) month_name="November" ;;
+            12) month_name="Dezember" ;;
+        esac
+        
+        echo "$day. $month_name $year - $hour:$minute Uhr"
+    else
+        echo "$folder"
+    fi
+}
+
+echo "=== Mounting Borg Backup Vault ==="
+# Mount the Borg vault
+borg mount "$BORG_REPO" "$BORG_MOUNT"
+echo "✓ Borg vault mounted to $BORG_MOUNT"
+echo ""
+
+# Scan for backup folders
+echo "=== Scanning for available backups ==="
+mapfile -t backups < <(ls -1 "$BORG_MOUNT" | sort -r)
+
+if [ ${#backups[@]} -eq 0 ]; then
+    echo "Error: No backups found in $BORG_MOUNT"
+    borg umount "$BORG_MOUNT"
+    exit 1
+fi
+
+echo "Available backups:"
+echo ""
+for i in "${!backups[@]}"; do
+    backup_date=$(format_date "${backups[$i]}")
+    printf "%2d) %s\n" $((i+1)) "$backup_date"
+done
+
+echo ""
+read -p "Select backup number (1-${#backups[@]}) or [Enter] for latest: " selection
+
+# Default to latest (first in sorted list)
+if [ -z "$selection" ]; then
+    selection=1
+fi
+
+# Validate selection
+if ! [[ "$selection" =~ ^[0-9]+$ ]] || [ "$selection" -lt 1 ] || [ "$selection" -gt ${#backups[@]} ]; then
+    echo "Error: Invalid selection"
+    borg umount "$BORG_MOUNT"
+    exit 1
+fi
+
+selected_backup="${backups[$((selection-1))]}"
+selected_date=$(format_date "$selected_backup")
+
+echo ""
+echo "✓ Selected backup: $selected_date"
+echo ""
+
+# Find the qcow2 file in the selected backup
+echo "=== Searching for QCOW2 file ==="
+qcow2_path=$(find "$BORG_MOUNT/$selected_backup" -name "$QCOW2_FILE" 2>/dev/null | head -n 1)
+
+if [ -z "$qcow2_path" ]; then
+    echo "Error: Could not find $QCOW2_FILE in backup"
+    borg umount "$BORG_MOUNT"
+    exit 1
+fi
+
+echo "✓ Found: $qcow2_path"
+echo ""
+
+echo "=== Mounting QCOW2 Disk Image ==="
+# Load NBD kernel module
+modprobe nbd max_part=8
+echo "✓ NBD module loaded"
+
+# Connect qcow2 image to NBD device in read-only mode
+qemu-nbd --connect=/dev/nbd0 --read-only "$qcow2_path"
+echo "✓ QCOW2 connected to /dev/nbd0"
+
+# Wait a moment for device to be ready
+sleep 2
+
+# Scan for LVM volumes
+pvscan > /dev/null 2>&1
+vgscan > /dev/null 2>&1
+echo "✓ LVM volumes scanned"
+
+# Create mount point if it doesn't exist
+mkdir -p "$QCOW2_MOUNT"
+
+# Mount the logical volume in read-only mode without journal recovery
+mount -t ext4 -o ro,noload /dev/vgdata/lvshare "$QCOW2_MOUNT"
+echo "✓ Filesystem mounted to $QCOW2_MOUNT"
+
+echo ""
+echo "=== Mount Summary ==="
+echo "Borg vault:    $BORG_MOUNT"
+echo "Selected:      $selected_date"
+echo "QCOW2 disk:    $QCOW2_MOUNT"
+echo ""
+df -h "$BORG_MOUNT" "$QCOW2_MOUNT"
+
+echo ""
+echo "Done! To unmount, run: /data_storage/Backup/borg/umount_backup.sh"