Files
WesandClaude Sonnet 4.5 27afedb32e Complete rewrite: SnapRAID SMART logger with BackBlaze algorithm
Fetches SMART data from Scrutiny's InfluxDB and calculates failure
probabilities using the exact BackBlaze tables from SnapRAID source.

Key features:
- Calculates both v12 (with attr 193) and v13 (without attr 193) algorithms
- v12 matches SnapRAID pre-v13.0 (includes Load Cycle Count)
- v13 matches modern SnapRAID v13.0+ (excludes Load Cycle Count)
- Stores both values for trending and comparison
- Correctly applies bit masks (16-bit for 187/188, 32-bit for others)
- Annualizes monthly rates and applies Poisson distribution
- Logs to PostgreSQL with device metadata

Solved the mystery: SnapRAID v12 uses attribute 193 which was removed
in v13.0. Load cycle count has massive impact on failure predictions
for some drives (80% vs 4% difference).

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-07 06:55:39 -05:00

86 lines
2.7 KiB
Python
Executable File

#!/usr/bin/env python3
"""
Debug script to see actual SMART attribute values from InfluxDB
"""
import os
from influxdb_client import InfluxDBClient
from dotenv import load_dotenv
load_dotenv()
def debug_smart_values():
"""Fetch and display raw SMART values for debugging."""
url = os.getenv('INFLUXDB_URL')
token = os.getenv('INFLUXDB_TOKEN')
org = os.getenv('INFLUXDB_ORG', 'scrutiny')
bucket = os.getenv('INFLUXDB_BUCKET', 'metrics')
client = InfluxDBClient(url=url, token=token, org=org)
query_api = client.query_api()
# Get all SMART attribute fields for one device
query = f'''
from(bucket: "{bucket}")
|> range(start: -1h)
|> filter(fn: (r) => r._measurement == "smart")
|> filter(fn: (r) => r.device_wwn == "0x5000c500c570663e")
|> filter(fn: (r) =>
r._field =~ /attr\\.5\\.(raw_value|transformed_value|value)/ or
r._field =~ /attr\\.187\\.(raw_value|transformed_value|value)/ or
r._field =~ /attr\\.188\\.(raw_value|transformed_value|value)/ or
r._field =~ /attr\\.197\\.(raw_value|transformed_value|value)/ or
r._field =~ /attr\\.198\\.(raw_value|transformed_value|value)/ or
r._field =~ /attr\\.9\\.(raw_value|transformed_value|value)/
)
|> last()
'''
print("=" * 80)
print("SMART Attribute Values for /dev/sdc (ZLW0A3QJ) - Should be 81% failure")
print("=" * 80)
result = query_api.query(query)
values = {}
for table in result:
for record in table.records:
field = record.get_field()
value = record.get_value()
values[field] = value
# Group by attribute
attrs = {}
for field, value in sorted(values.items()):
parts = field.split('.')
if len(parts) >= 3:
attr_id = parts[1]
field_type = parts[2]
if attr_id not in attrs:
attrs[attr_id] = {}
attrs[attr_id][field_type] = value
# Display
for attr_id in sorted(attrs.keys(), key=int):
print(f"\nAttribute {attr_id}:")
attr_data = attrs[attr_id]
raw = attr_data.get('raw_value', 'N/A')
transformed = attr_data.get('transformed_value', 'N/A')
value = attr_data.get('value', 'N/A')
print(f" raw_value: {raw}")
if isinstance(raw, int):
print(f" hex: 0x{raw:012x}")
print(f" low byte: {raw & 0xFF}")
print(f" low word (16-bit): {raw & 0xFFFF}")
print(f" low 32-bit: {raw & 0xFFFFFFFF}")
print(f" transformed_value: {transformed}")
print(f" value: {value}")
client.close()
if __name__ == '__main__':
debug_smart_values()