Graham McIntire
68a4ebf601
Fixes voltage sensors that were incorrectly classified as temperature
sensors due to MikroTik devices reporting wrong mtxrGaugeUnit values.
Problem:
- Sensors with names like "psu1-voltage" and "psu2-voltage" were
classified as temperature sensors with divisor=1
- This caused voltage readings to display as 469V instead of 46.9V
- The RouterOS profile already has name-based override logic for new
discoveries, but existing sensors needed fixing
Solution:
- Migration identifies sensors by:
- OID pattern: 1.3.6.1.4.1.14988.1.1.3.100.1.3.%
- Type mismatch: sensor_type = 'temperature' but name contains 'voltage'
- Incorrect divisor: sensor_divisor = 1
- Updates sensor metadata: type, unit, divisor
- Corrects historical sensor_reading values by dividing by 10
Future discoveries are already protected by the name-based override
logic in lib/towerops/snmp/profiles/vendors/routeros.ex:620-630
🤖 Generated with Claude Code
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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