Extends temperature monitoring to collect SMART temps for SATA/SAS disks,
addressing issue #652 where physical disk temperatures showed as empty.
Architecture:
- Deploys pulse-sensor-wrapper.sh as SSH forced command on Proxmox nodes
- Wrapper collects both CPU/GPU temps (sensors -j) and disk temps (smartctl)
- Implements 30-min cache with background refresh to avoid performance impact
- Uses smartctl -n standby,after to skip sleeping drives without waking them
- Returns unified JSON: {sensors: {...}, smart: [...]}
Backend changes:
- Add DiskTemp model with device, serial, WWN, temperature, lastUpdated
- Extend Temperature model with SMART []DiskTemp field and HasSMART flag
- Add WWN field to PhysicalDisk for reliable disk matching
- Update parseSensorsJSON to handle both legacy and new wrapper formats
- Rewrite mergeNVMeTempsIntoDisks to match SMART temps by WWN → serial → devpath
- Preserve legacy NVMe temperature support for backward compatibility
Performance considerations:
- SMART data cached for 30 minutes per node to avoid excessive smartctl calls
- Background refresh prevents blocking temperature requests
- Respects drive standby state to avoid spinning up idle arrays
- Staggered disk scanning with 0.1s delay to avoid saturating SATA controllers
Install script:
- Deploys wrapper to /usr/local/bin/pulse-sensor-wrapper.sh
- Updates SSH forced command from "sensors -j" to wrapper script
- Backward compatible - falls back to direct sensors output if wrapper missing
Testing note:
- Requires real hardware with smartmontools installed for full functionality
- Empty smart array returned gracefully when smartctl unavailable
- Legacy sensor-only nodes continue working without changes
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