[receiver/hostmetrics] (Filesystems Scraper) Folder mounted volumes under windows are not reported

[dloucasfx]

Component(s)

receiver/hostmetrics

What happened?

Description

The filesystem scraper uses GoPsutil lib to get the windows partitions/volumes stats; However, it only fetches letter mounted volumes https://github.com/shirou/gopsutil/blame/v3.23.8/disk/disk_windows.go#L108
If user mounted a volume to a path, the scraper will not get any metrics for that volumes

Steps to Reproduce

• Add a new disk to a windows VM
• from Disk Management tool, right-click the new volume, and select Change drive letter and paths.
  From there, add “Mount in the following empty NTFS folder” and select an empty dir on the C:\ drive and make sure there is NO assigned drive letter

Run the collector with this simple config

extensions:
  health_check:
    endpoint: 0.0.0.0:13133
  
receivers:
  hostmetrics:
    collection_interval: 10s
    scrapers:
      filesystem:

             
processors:
  batch:

  resourcedetection:
    detectors: [azure, system]
    override: false
    
  resourcedetection/internal:
    detectors: [system]
    override: true
    system:
      hostname_sources: [dns]
    
exporters:
  logging:
    loglevel: debug
  file:
    path: C:\logs

service:
  telemetry:
    logs:
      level: "info"
  extensions: [health_check]
  pipelines:
    metrics:
      receivers: [hostmetrics]
      processors: [batch, resourcedetection]
      exporters: [file]

Expected Result

The folder mounted volume is not present in the metrics

Actual Result

The folder mounted volume should be present in the collected metrics

Proposed Solution

We ran into this issue in the Signalfx agent and we implemented this https://github.com/signalfx/signalfx-agent/blob/main/pkg/monitors/filesystems/partitions_windows.go to address the issue as GoPSutil has not addressed the issue shirou/gopsutil#1245

Happy to move the SA implementation to here while waiting on gopsutil to fix it.

Collector version

main

[github-actions]

Pinging code owners:

• receiver/hostmetrics: @dmitryax

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[dmitryax]

Sounds good to me. I think we should try to push the fix in gopsutil before porting the SA implementation

[dloucasfx]

Pushed the fix to gopsutil shirou/gopsutil#1534

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/hostmetrics: @dmitryax @braydonk

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[braydonk]

Keeping open since there's a PR open for this in gopsutil.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/hostmetrics: @dmitryax @braydonk

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/hostmetrics: @dmitryax @braydonk

See Adding Labels via Comments if you do not have permissions to add labels yourself.