Feat: Infrastructure Disk Usage

[nikhilmantri0902]

Pull Request

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📄 Summary

Why does this change exist?

Today the infrastructure tab, doesnt show out of the box information on disk/filesystem usage

What problem does it solve, and why is this the right approach?

1. In order to check the host's disk usage, we will be showing disk usage % of the host using the otel metric system.filesystem.usage in the host lists page.
2. We will also be showing this bar in the sidedrawer
3. In the sidedrawer we will also display a time series graph of disk usage split by the selected host's mounpoints.

Screenshots / Screen Recordings (if applicable)

Include screenshots or screen recordings that clearly show the behavior before the change and the result after the change. This helps reviewers quickly understand the impact and verify the update.

2.

Issues closed by this PR

Reference issues using Closes #issue-number to enable automatic closure on merge.
Closes #https://github.com/SigNoz/engineering-pod/issues/2591

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✅ Change Type

Select all that apply

• ✨ Feature

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🧪 Testing Strategy

How was this change validated?

• Manual verification

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⚠️ Risk & Impact Assessment

What could break? How do we recover?

• Blast radius: Infrastructure tab, host lists API and the sidedrawer
• Potential regressions:
• Rollback plan:

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📝 Changelog

Fill only if this affects users, APIs, UI, or documented behavior
Use N/A for internal or non-user-facing changes

Field	Value
Deployment Type	Cloud + OSS + Enterprise
Change Type	Feature
Description	User will get to see out of the box info on filesystem usage

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📋 Checklist

• Tests added or explicitly not required
• Manually tested
• Breaking changes documented
• Backward compatibility considered

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👀 Notes for Reviewers

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Note

Medium Risk
Adds a new filesystem field to the host list API and extends query-building logic (new formula/queries and step handling), which could affect sorting/results and query load for infra monitoring screens.

Overview
Adds host disk usage support end-to-end: the hosts list API/model now includes a filesystem utilization value and supports sorting by it, and the Infra Monitoring UI surfaces it as a new “Disk Usage” column plus a progress bar in the host side drawer.

Extends host metrics queries to include a disk-usage time series split by mountpoint (via system.filesystem.usage) and updates host metric query payloads to use stepInterval: 0 so the backend derives the effective step from the selected time range. Related frontend types/styles and tests are updated accordingly.

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Bugbot Autofix prepared a fix for the issue found in the latest run.

• ✅ Fixed: Inconsistent indentation breaks map literal structure readability
  • Corrected indentation of map entries G, H, I, and F4 from 2 tabs to 3 tabs to match the consistent pattern used by other entries in the BuilderQueries map.

Or push these changes by commenting:

@cursor push 01bb4a9afe

Preview (01bb4a9afe)

diff --git a/pkg/query-service/app/inframetrics/hosts_query.go b/pkg/query-service/app/inframetrics/hosts_query.go
--- a/pkg/query-service/app/inframetrics/hosts_query.go
+++ b/pkg/query-service/app/inframetrics/hosts_query.go
@@ -269,131 +269,131 @@
 					Items:    []v3.FilterItem{},
 				},
 			},
-		"G": {
-			QueryName:  "G",
-			DataSource: v3.DataSourceMetrics,
-			AggregateAttribute: v3.AttributeKey{
-				Key:      metricNamesForHosts["load15"],
-				DataType: v3.AttributeKeyDataTypeFloat64,
-			},
-			Temporality: v3.Unspecified,
-			Filters: &v3.FilterSet{
-				Operator: "AND",
-				Items: []v3.FilterItem{
-					{
-						Key: v3.AttributeKey{
-							Key:      hostNameAttrKey,
-							DataType: v3.AttributeKeyDataTypeString,
-							Type:     v3.AttributeKeyTypeResource,
+			"G": {
+				QueryName:  "G",
+				DataSource: v3.DataSourceMetrics,
+				AggregateAttribute: v3.AttributeKey{
+					Key:      metricNamesForHosts["load15"],
+					DataType: v3.AttributeKeyDataTypeFloat64,
+				},
+				Temporality: v3.Unspecified,
+				Filters: &v3.FilterSet{
+					Operator: "AND",
+					Items: []v3.FilterItem{
+						{
+							Key: v3.AttributeKey{
+								Key:      hostNameAttrKey,
+								DataType: v3.AttributeKeyDataTypeString,
+								Type:     v3.AttributeKeyTypeResource,
+							},
+							Operator: v3.FilterOperatorNotContains,
+							Value:    agentNameToIgnore,
 						},
-						Operator: v3.FilterOperatorNotContains,
-						Value:    agentNameToIgnore,
 					},
 				},
+				GroupBy: []v3.AttributeKey{
+					{
+						Key:      hostNameAttrKey,
+						DataType: v3.AttributeKeyDataTypeString,
+						Type:     v3.AttributeKeyTypeResource,
+					},
+				},
+				Expression:       "G",
+				ReduceTo:         v3.ReduceToOperatorAvg,
+				TimeAggregation:  v3.TimeAggregationAvg,
+				SpaceAggregation: v3.SpaceAggregationSum,
+				Disabled:         false,
+				Legend:           "CPU Load Average (15m)",
 			},
-			GroupBy: []v3.AttributeKey{
-				{
-					Key:      hostNameAttrKey,
-					DataType: v3.AttributeKeyDataTypeString,
-					Type:     v3.AttributeKeyTypeResource,
+			"H": {
+				QueryName:  "H",
+				DataSource: v3.DataSourceMetrics,
+				AggregateAttribute: v3.AttributeKey{
+					Key:      metricNamesForHosts["filesystem"],
+					DataType: v3.AttributeKeyDataTypeFloat64,
 				},
-			},
-			Expression:       "G",
-			ReduceTo:         v3.ReduceToOperatorAvg,
-			TimeAggregation:  v3.TimeAggregationAvg,
-			SpaceAggregation: v3.SpaceAggregationSum,
-			Disabled:         false,
-			Legend:           "CPU Load Average (15m)",
-		},
-		"H": {
-			QueryName:  "H",
-			DataSource: v3.DataSourceMetrics,
-			AggregateAttribute: v3.AttributeKey{
-				Key:      metricNamesForHosts["filesystem"],
-				DataType: v3.AttributeKeyDataTypeFloat64,
-			},
-			Temporality: v3.Cumulative,
-			Filters: &v3.FilterSet{
-				Operator: "AND",
-				Items: []v3.FilterItem{
-					{
-						Key: v3.AttributeKey{
-							Key:      "state",
-							DataType: v3.AttributeKeyDataTypeString,
-							Type:     v3.AttributeKeyTypeTag,
+				Temporality: v3.Cumulative,
+				Filters: &v3.FilterSet{
+					Operator: "AND",
+					Items: []v3.FilterItem{
+						{
+							Key: v3.AttributeKey{
+								Key:      "state",
+								DataType: v3.AttributeKeyDataTypeString,
+								Type:     v3.AttributeKeyTypeTag,
+							},
+							Operator: v3.FilterOperatorEqual,
+							Value:    "used",
 						},
-						Operator: v3.FilterOperatorEqual,
-						Value:    "used",
+						{
+							Key: v3.AttributeKey{
+								Key:      hostNameAttrKey,
+								DataType: v3.AttributeKeyDataTypeString,
+								Type:     v3.AttributeKeyTypeResource,
+							},
+							Operator: v3.FilterOperatorNotContains,
+							Value:    agentNameToIgnore,
+						},
 					},
+				},
+				GroupBy: []v3.AttributeKey{
 					{
-						Key: v3.AttributeKey{
-							Key:      hostNameAttrKey,
-							DataType: v3.AttributeKeyDataTypeString,
-							Type:     v3.AttributeKeyTypeResource,
-						},
-						Operator: v3.FilterOperatorNotContains,
-						Value:    agentNameToIgnore,
+						Key:      hostNameAttrKey,
+						DataType: v3.AttributeKeyDataTypeString,
+						Type:     v3.AttributeKeyTypeResource,
 					},
 				},
+				Expression:       "H",
+				ReduceTo:         v3.ReduceToOperatorAvg,
+				TimeAggregation:  v3.TimeAggregationAvg,
+				SpaceAggregation: v3.SpaceAggregationSum,
+				Disabled:         true,
 			},
-			GroupBy: []v3.AttributeKey{
-				{
-					Key:      hostNameAttrKey,
-					DataType: v3.AttributeKeyDataTypeString,
-					Type:     v3.AttributeKeyTypeResource,
+			"I": {
+				QueryName:  "I",
+				DataSource: v3.DataSourceMetrics,
+				AggregateAttribute: v3.AttributeKey{
+					Key:      metricNamesForHosts["filesystem"],
+					DataType: v3.AttributeKeyDataTypeFloat64,
 				},
-			},
-			Expression:       "H",
-			ReduceTo:         v3.ReduceToOperatorAvg,
-			TimeAggregation:  v3.TimeAggregationAvg,
-			SpaceAggregation: v3.SpaceAggregationSum,
-			Disabled:         true,
-		},
-		"I": {
-			QueryName:  "I",
-			DataSource: v3.DataSourceMetrics,
-			AggregateAttribute: v3.AttributeKey{
-				Key:      metricNamesForHosts["filesystem"],
-				DataType: v3.AttributeKeyDataTypeFloat64,
-			},
-			Temporality: v3.Cumulative,
-			Filters: &v3.FilterSet{
-				Operator: "AND",
-				Items: []v3.FilterItem{
-					{
-						Key: v3.AttributeKey{
-							Key:      hostNameAttrKey,
-							DataType: v3.AttributeKeyDataTypeString,
-							Type:     v3.AttributeKeyTypeResource,
+				Temporality: v3.Cumulative,
+				Filters: &v3.FilterSet{
+					Operator: "AND",
+					Items: []v3.FilterItem{
+						{
+							Key: v3.AttributeKey{
+								Key:      hostNameAttrKey,
+								DataType: v3.AttributeKeyDataTypeString,
+								Type:     v3.AttributeKeyTypeResource,
+							},
+							Operator: v3.FilterOperatorNotContains,
+							Value:    agentNameToIgnore,
 						},
-						Operator: v3.FilterOperatorNotContains,
-						Value:    agentNameToIgnore,
 					},
 				},
+				GroupBy: []v3.AttributeKey{
+					{
+						Key:      hostNameAttrKey,
+						DataType: v3.AttributeKeyDataTypeString,
+						Type:     v3.AttributeKeyTypeResource,
+					},
+				},
+				Expression:       "I",
+				ReduceTo:         v3.ReduceToOperatorAvg,
+				TimeAggregation:  v3.TimeAggregationAvg,
+				SpaceAggregation: v3.SpaceAggregationSum,
+				Disabled:         true,
 			},
-			GroupBy: []v3.AttributeKey{
-				{
-					Key:      hostNameAttrKey,
-					DataType: v3.AttributeKeyDataTypeString,
-					Type:     v3.AttributeKeyTypeResource,
+			"F4": {
+				QueryName:  "F4",
+				Expression: "H/I",
+				Legend:     "Disk Usage (%)",
+				Filters: &v3.FilterSet{
+					Operator: "AND",
+					Items:    []v3.FilterItem{},
 				},
 			},
-			Expression:       "I",
-			ReduceTo:         v3.ReduceToOperatorAvg,
-			TimeAggregation:  v3.TimeAggregationAvg,
-			SpaceAggregation: v3.SpaceAggregationSum,
-			Disabled:         true,
 		},
-		"F4": {
-			QueryName:  "F4",
-			Expression: "H/I",
-			Legend:     "Disk Usage (%)",
-			Filters: &v3.FilterSet{
-				Operator: "AND",
-				Items:    []v3.FilterItem{},
-			},
-		},
-		},
 		PanelType: v3.PanelTypeTable,
 		QueryType: v3.QueryTypeBuilder,
 	},

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[cursor]

Inconsistent indentation breaks map literal structure readability

Low Severity

Entries "G" through "F4" in the BuilderQueries map are at 2-tab indentation while entries "A" through "F3" remain at 3-tab indentation. This makes the map literal visually confusing — the new entries appear to be at the same level as BuilderQueries itself rather than nested inside it. The consecutive }, on lines 395 and 396 (closing F4 and the map respectively, both at 2 tabs) further obscure the structure. While Go compiles this fine, the inconsistency makes the code harder to read and maintain.