{
  "summary": {
    "total_systems": 1,
    "systems_with_changes": 1,
    "total_changes": 7,
    "changes_by_type": {
      "mounts": 2,
      "services": 2,
      "disk_usage": 3
    },
    "most_affected_systems": [
      [
        "web01",
        7
      ]
    ]
  },
  "differences": {
    "mounts": {
      "web01": {
        "added_mounts": [],
        "removed_mounts": [],
        "changed_mounts": [],
        "usage_changes": [
          {
            "mountpoint": "/",
            "before": {
              "filesystem": "/dev/sda1",
              "use_percent": "61%"
            },
            "after": {
              "filesystem": "/dev/sda1",
              "use_percent": "62%"
            }
          },
          {
            "mountpoint": "/var",
            "before": {
              "filesystem": "/dev/sdb1",
              "use_percent": "68%"
            },
            "after": {
              "filesystem": "/dev/sdb1",
              "use_percent": "94%"
            }
          }
        ]
      }
    },
    "services": {
      "web01": {
        "added_services": [
          {
            "name": "node-exporter",
            "active_state": "active",
            "sub_state": "running"
          }
        ],
        "removed_services": [],
        "status_changes": [
          {
            "name": "sshd",
            "before": {
              "active_state": "active",
              "sub_state": "running"
            },
            "after": {
              "active_state": "failed",
              "sub_state": "failed"
            }
          }
        ],
        "configuration_changes": []
      }
    },
    "disk_usage": {
      "web01": {
        "filesystem_changes": [
          {
            "mountpoint": "/",
            "before": {
              "filesystem": "/dev/sda1",
              "type": "ext4",
              "size": "80G",
              "used": "49G",
              "available": "31G",
              "use_percent": "61%",
              "mountpoint": "/"
            },
            "after": {
              "filesystem": "/dev/sda1",
              "type": "ext4",
              "size": "80G",
              "used": "50G",
              "available": "30G",
              "use_percent": "62%",
              "mountpoint": "/"
            }
          },
          {
            "mountpoint": "/var",
            "before": {
              "filesystem": "/dev/sdb1",
              "type": "xfs",
              "size": "200G",
              "used": "136G",
              "available": "64G",
              "use_percent": "68%",
              "mountpoint": "/var"
            },
            "after": {
              "filesystem": "/dev/sdb1",
              "type": "xfs",
              "size": "200G",
              "used": "188G",
              "available": "12G",
              "use_percent": "94%",
              "mountpoint": "/var"
            }
          }
        ],
        "directory_size_changes": [],
        "significant_usage_changes": [
          {
            "mountpoint": "/var",
            "change_percent": 26,
            "before": {
              "filesystem": "/dev/sdb1",
              "type": "xfs",
              "size": "200G",
              "used": "136G",
              "available": "64G",
              "use_percent": "68%",
              "mountpoint": "/var"
            },
            "after": {
              "filesystem": "/dev/sdb1",
              "type": "xfs",
              "size": "200G",
              "used": "188G",
              "available": "12G",
              "use_percent": "94%",
              "mountpoint": "/var"
            }
          }
        ]
      }
    }
  },
  "risk_assessment": {
    "overall_risk": "high",
    "risk_factors": [
      {
        "type": "service_failure",
        "description": "Service failed: sshd",
        "level": 3
      },
      {
        "type": "disk_usage_spike",
        "description": "Significant disk usage change: /var (26%)",
        "level": 2
      }
    ],
    "critical_changes": [],
    "recommendations": [
      "Immediate review required - critical changes detected",
      "Consider rolling back migration if critical services are affected"
    ]
  },
  "validation_results": {
    "passed": false,
    "checks": [
      {
        "name": "critical_services_running",
        "description": "Verify critical services remain operational",
        "passed": false,
        "details": [
          "Critical service sshd failed on web01"
        ]
      },
      {
        "name": "filesystem_integrity",
        "description": "Verify filesystem integrity maintained",
        "passed": true,
        "details": []
      },
      {
        "name": "no_critical_mounts_removed",
        "description": "Verify critical mount points remain",
        "passed": true,
        "details": []
      }
    ],
    "failed_checks": [
      {
        "name": "critical_services_running",
        "description": "Verify critical services remain operational",
        "passed": false,
        "details": [
          "Critical service sshd failed on web01"
        ]
      }
    ],
    "result": "FAIL"
  },
  "metadata": {
    "before": "migration-validation-framework/examples/before.json",
    "after": "migration-validation-framework/examples/after.json",
    "timestamp": "2026-04-29T23:29:07.510774"
  }
}