diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index c81bb0b94..fead943f0 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -33,6 +33,7 @@ aliases:
 * BUGFIX: [helm-converter](https://docs.victoriametrics.com/operator/helm-converter/): fix `securityContext.runAsNonRoot`, `runAsUser`, `runAsGroup`, `seccompProfile`, `appArmorProfile`, `seLinuxOptions`, and `windowsOptions` being silently dropped during conversion; these are now promoted to `spec.securityContext.podSecurityContext`, matching how the operator applies them to containers. See [#2391](https://github.com/VictoriaMetrics/operator/issues/2391).
 * BUGFIX: [helm-converter](https://docs.victoriametrics.com/operator/helm-converter/): fix TLS/mTLS settings (`tlsCAFile`, `tlsCertFile`, `tlsKeyFile`, `tlsServerName`, `tlsInsecureSkipVerify`) on `remoteWrite` entries being dropped during conversion for vmagent, vlagent, vlcollector, and vmalert charts. See [#2390](https://github.com/VictoriaMetrics/operator/issues/2390).
 * BUGFIX: [helm-converter](https://docs.victoriametrics.com/operator/helm-converter/): fix `cannot unmarshal object into Go struct field ... headers of type []string` error when a chart's default values.yaml ships a `headers: {}` map (e.g. vmalert's `datasource.headers`, `notifier.headers`, `remoteWrite.headers`); such maps are now normalized to the operator's `key:value` string-slice format before conversion. See [#2398](https://github.com/VictoriaMetrics/operator/issues/2398).
+* BUGFIX: [helm-converter](https://docs.victoriametrics.com/operator/helm-converter/): fix `extraVolumes`/`extraVolumeMounts` being silently dropped during conversion for vmsingle, vmagent, vmalert, vmanomaly, vmcluster, vlcluster, vtcluster, vtsingle, vlogs, and vmauth charts. See [#2424](https://github.com/VictoriaMetrics/operator/issues/2424).
 * BUGFIX: [vmagent](https://docs.victoriametrics.com/operator/resources/vmagent/), [vmanomaly](https://docs.victoriametrics.com/operator/resources/vmanomaly/): target `spec.vpa` at the `VMAgent`/`VMAnomaly` custom resource itself instead of its underlying `Deployment`/`StatefulSet`. VPA rejects a `targetRef` whose owner chain includes another scalable controller, so a `VerticalPodAutoscaler` targeting the workload directly was silently non-functional whenever the CR exposed a `scale` subresource. See [#2415](https://github.com/VictoriaMetrics/operator/issues/2415).
 * BUGFIX: [vlagent](https://docs.victoriametrics.com/operator/resources/vlagent/): remove a vestigial `scale` subresource declaration referencing nonexistent `spec`/`status` fields, which unconditionally broke `spec.vpa` for `VLAgent` the same way as [#2415](https://github.com/VictoriaMetrics/operator/issues/2415).
 
diff --git a/internal/converter/converter.go b/internal/converter/converter.go
index c57adbb5a..62fc8246c 100644
--- a/internal/converter/converter.go
+++ b/internal/converter/converter.go
@@ -69,6 +69,8 @@ type VMAgentHelmValues struct {
 	ImagePullSecrets   []corev1.LocalObjectReference `yaml:"imagePullSecrets,omitempty" json:"imagePullSecrets,omitempty"`
 	ExtraArgs          map[string]interface{}        `yaml:"extraArgs,omitempty" json:"extraArgs,omitempty"`
 	ExtraEnvs          []corev1.EnvVar               `yaml:"env,omitempty" json:"env,omitempty"`
+	ExtraVolumes       []corev1.Volume               `yaml:"extraVolumes,omitempty" json:"extraVolumes,omitempty"`
+	ExtraVolumeMounts  []corev1.VolumeMount          `yaml:"extraVolumeMounts,omitempty" json:"extraVolumeMounts,omitempty"`
 	Resources          *corev1.ResourceRequirements  `yaml:"resources,omitempty" json:"resources,omitempty"`
 	NodeSelector       map[string]string             `yaml:"nodeSelector,omitempty" json:"nodeSelector,omitempty"`
 	Tolerations        []corev1.Toleration           `yaml:"tolerations,omitempty" json:"tolerations,omitempty"`
@@ -124,6 +126,8 @@ type VMAnomalyHelmValues struct {
 	ImagePullSecrets   []corev1.LocalObjectReference `yaml:"imagePullSecrets,omitempty" json:"imagePullSecrets,omitempty"`
 	ExtraArgs          map[string]interface{}        `yaml:"extraArgs,omitempty" json:"extraArgs,omitempty"`
 	ExtraEnvs          []corev1.EnvVar               `yaml:"env,omitempty" json:"env,omitempty"`
+	ExtraVolumes       []corev1.Volume               `yaml:"extraVolumes,omitempty" json:"extraVolumes,omitempty"`
+	ExtraVolumeMounts  []corev1.VolumeMount          `yaml:"extraVolumeMounts,omitempty" json:"extraVolumeMounts,omitempty"`
 	Resources          *corev1.ResourceRequirements  `yaml:"resources,omitempty" json:"resources,omitempty"`
 	NodeSelector       map[string]string             `yaml:"nodeSelector,omitempty" json:"nodeSelector,omitempty"`
 	Tolerations        []corev1.Toleration           `yaml:"tolerations,omitempty" json:"tolerations,omitempty"`
@@ -152,6 +156,8 @@ type VMAlertServerValues struct {
 	ReplicaCount       *int32                           `yaml:"replicaCount,omitempty" json:"replicaCount,omitempty"`
 	ExtraArgs          map[string]interface{}           `yaml:"extraArgs,omitempty" json:"extraArgs,omitempty"`
 	ExtraEnvs          []corev1.EnvVar                  `yaml:"env,omitempty" json:"env,omitempty"`
+	ExtraVolumes       []corev1.Volume                  `yaml:"extraVolumes,omitempty" json:"extraVolumes,omitempty"`
+	ExtraVolumeMounts  []corev1.VolumeMount             `yaml:"extraVolumeMounts,omitempty" json:"extraVolumeMounts,omitempty"`
 	Resources          *corev1.ResourceRequirements     `yaml:"resources,omitempty" json:"resources,omitempty"`
 	NodeSelector       map[string]string                `yaml:"nodeSelector,omitempty" json:"nodeSelector,omitempty"`
 	Tolerations        []corev1.Toleration              `yaml:"tolerations,omitempty" json:"tolerations,omitempty"`
@@ -255,6 +261,8 @@ type ServerValues struct {
 	RetentionPeriod    interface{}                   `yaml:"retentionPeriod,omitempty" json:"retentionPeriod,omitempty"`
 	ExtraArgs          map[string]interface{}        `yaml:"extraArgs,omitempty" json:"extraArgs,omitempty"`
 	ExtraEnvs          []corev1.EnvVar               `yaml:"extraEnvs,omitempty" json:"extraEnvs,omitempty"`
+	ExtraVolumes       []corev1.Volume               `yaml:"extraVolumes,omitempty" json:"extraVolumes,omitempty"`
+	ExtraVolumeMounts  []corev1.VolumeMount          `yaml:"extraVolumeMounts,omitempty" json:"extraVolumeMounts,omitempty"`
 	Resources          *corev1.ResourceRequirements  `yaml:"resources,omitempty" json:"resources,omitempty"`
 	NodeSelector       map[string]string             `yaml:"nodeSelector,omitempty" json:"nodeSelector,omitempty"`
 	Tolerations        []corev1.Toleration           `yaml:"tolerations,omitempty" json:"tolerations,omitempty"`
@@ -866,6 +874,14 @@ func convertCommonConfig(values ServerValues, global GlobalValues) (commonConfig
 		cfg.ExtraEnvs = values.ExtraEnvs
 	}
 
+	if len(values.ExtraVolumes) > 0 {
+		cfg.Volumes = values.ExtraVolumes
+	}
+
+	if len(values.ExtraVolumeMounts) > 0 {
+		cfg.VolumeMounts = values.ExtraVolumeMounts
+	}
+
 	storage, err := convertPersistentVolume(values.PersistentVolume)
 	if err != nil {
 		return cfg, err
@@ -1078,6 +1094,8 @@ func convertVMSingleSpec(values *VMSingleHelmValues) (*vmv1beta1.VMSingleSpec, e
 	spec.PodMetadata = cfg.PodMetadata
 	spec.ServiceSpec = cfg.ServiceSpec
 	spec.Storage = cfg.Storage
+	spec.Volumes = cfg.Volumes
+	spec.VolumeMounts = cfg.VolumeMounts
 
 	if values.Server.RetentionPeriod != nil {
 		spec.RetentionPeriod = fmt.Sprint(values.Server.RetentionPeriod)
@@ -1099,6 +1117,8 @@ func convertVMAnomalySpec(values *VMAnomalyHelmValues) (*vmv1.VMAnomalySpec, err
 		ReplicaCount:       values.ReplicaCount,
 		ExtraArgs:          values.ExtraArgs,
 		ExtraEnvs:          values.ExtraEnvs,
+		ExtraVolumes:       values.ExtraVolumes,
+		ExtraVolumeMounts:  values.ExtraVolumeMounts,
 		Resources:          values.Resources,
 		NodeSelector:       values.NodeSelector,
 		Tolerations:        values.Tolerations,
@@ -1116,6 +1136,8 @@ func convertVMAnomalySpec(values *VMAnomalyHelmValues) (*vmv1.VMAnomalySpec, err
 	spec.Image = cfg.Image
 	spec.ExtraArgs = cfg.ExtraArgs
 	spec.ExtraEnvs = cfg.ExtraEnvs
+	spec.Volumes = cfg.Volumes
+	spec.VolumeMounts = cfg.VolumeMounts
 	spec.Resources = cfg.Resources
 	spec.NodeSelector = cfg.NodeSelector
 	spec.Tolerations = cfg.Tolerations
@@ -1151,6 +1173,8 @@ func convertVMAlertSpec(values *VMAlertHelmValues) (*vmv1beta1.VMAlertSpec, erro
 		ReplicaCount:       values.Server.ReplicaCount,
 		ExtraArgs:          values.Server.ExtraArgs,
 		ExtraEnvs:          values.Server.ExtraEnvs,
+		ExtraVolumes:       values.Server.ExtraVolumes,
+		ExtraVolumeMounts:  values.Server.ExtraVolumeMounts,
 		Resources:          values.Server.Resources,
 		NodeSelector:       values.Server.NodeSelector,
 		Tolerations:        values.Server.Tolerations,
@@ -1168,6 +1192,8 @@ func convertVMAlertSpec(values *VMAlertHelmValues) (*vmv1beta1.VMAlertSpec, erro
 	spec.Image = cfg.Image
 	spec.ExtraArgs = cfg.ExtraArgs
 	spec.ExtraEnvs = cfg.ExtraEnvs
+	spec.Volumes = cfg.Volumes
+	spec.VolumeMounts = cfg.VolumeMounts
 	spec.Resources = cfg.Resources
 	spec.NodeSelector = cfg.NodeSelector
 	spec.Tolerations = cfg.Tolerations
@@ -1198,6 +1224,8 @@ func convertVMAgentSpec(values *VMAgentHelmValues) (*vmv1beta1.VMAgentSpec, erro
 		ReplicaCount:       values.ReplicaCount,
 		ExtraArgs:          values.ExtraArgs,
 		ExtraEnvs:          values.ExtraEnvs,
+		ExtraVolumes:       values.ExtraVolumes,
+		ExtraVolumeMounts:  values.ExtraVolumeMounts,
 		Resources:          values.Resources,
 		NodeSelector:       values.NodeSelector,
 		Tolerations:        values.Tolerations,
@@ -1215,6 +1243,8 @@ func convertVMAgentSpec(values *VMAgentHelmValues) (*vmv1beta1.VMAgentSpec, erro
 	spec.Image = cfg.Image
 	spec.ExtraArgs = cfg.ExtraArgs
 	spec.ExtraEnvs = cfg.ExtraEnvs
+	spec.Volumes = cfg.Volumes
+	spec.VolumeMounts = cfg.VolumeMounts
 	spec.Resources = cfg.Resources
 	spec.NodeSelector = cfg.NodeSelector
 	spec.Tolerations = cfg.Tolerations
diff --git a/internal/converter/converter_test.go b/internal/converter/converter_test.go
index 10f26a9dc..e8975d3f5 100644
--- a/internal/converter/converter_test.go
+++ b/internal/converter/converter_test.go
@@ -374,6 +374,39 @@ func TestConvertVMSingle(t *testing.T) {
 			return cr
 		},
 	)
+
+	// extraVolumes/extraVolumeMounts must be propagated. See #2424.
+	f(
+		&VMSingleHelmValues{
+			Server: ServerValues{
+				ExtraVolumes: []corev1.Volume{
+					{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+				},
+				ExtraVolumeMounts: []corev1.VolumeMount{
+					{Name: "extra", MountPath: "/extra"},
+				},
+			},
+		},
+		func() *vmv1beta1.VMSingle {
+			cr := &vmv1beta1.VMSingle{
+				TypeMeta: metav1.TypeMeta{
+					APIVersion: "operator.victoriametrics.com/v1beta1",
+					Kind:       "VMSingle",
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "test-name",
+					Namespace: "test-ns",
+				},
+			}
+			cr.Spec.Volumes = []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			}
+			cr.Spec.VolumeMounts = []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			}
+			return cr
+		},
+	)
 }
 
 func TestConvertVMCluster(t *testing.T) {
@@ -492,6 +525,37 @@ func TestConvertVMAgent(t *testing.T) {
 			return cr
 		},
 	)
+
+	// extraVolumes/extraVolumeMounts must be propagated. See #2424.
+	f(
+		&VMAgentHelmValues{
+			ExtraVolumes: []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			},
+			ExtraVolumeMounts: []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			},
+		},
+		func() *vmv1beta1.VMAgent {
+			cr := &vmv1beta1.VMAgent{
+				TypeMeta: metav1.TypeMeta{
+					APIVersion: "operator.victoriametrics.com/v1beta1",
+					Kind:       "VMAgent",
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "test-agent",
+					Namespace: "test-ns",
+				},
+			}
+			cr.Spec.Volumes = []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			}
+			cr.Spec.VolumeMounts = []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			}
+			return cr
+		},
+	)
 }
 
 func TestConvertVMAlert(t *testing.T) {
@@ -535,6 +599,39 @@ func TestConvertVMAlert(t *testing.T) {
 			return cr
 		},
 	)
+
+	// extraVolumes/extraVolumeMounts must be propagated. See #2424.
+	f(
+		&VMAlertHelmValues{
+			Server: VMAlertServerValues{
+				ExtraVolumes: []corev1.Volume{
+					{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+				},
+				ExtraVolumeMounts: []corev1.VolumeMount{
+					{Name: "extra", MountPath: "/extra"},
+				},
+			},
+		},
+		func() *vmv1beta1.VMAlert {
+			cr := &vmv1beta1.VMAlert{
+				TypeMeta: metav1.TypeMeta{
+					APIVersion: "operator.victoriametrics.com/v1beta1",
+					Kind:       "VMAlert",
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "test-alert",
+					Namespace: "test-ns",
+				},
+			}
+			cr.Spec.Volumes = []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			}
+			cr.Spec.VolumeMounts = []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			}
+			return cr
+		},
+	)
 }
 
 func TestConvertVMAnomaly(t *testing.T) {
@@ -584,6 +681,51 @@ func TestConvertVMAnomaly(t *testing.T) {
 			return cr
 		},
 	)
+
+	// extraVolumes/extraVolumeMounts must be propagated. See #2424.
+	f(
+		&VMAnomalyHelmValues{
+			Reader: &VMAnomalyReaderValues{
+				DatasourceURL:  "http://vmselect:8481/select/0/prometheus",
+				SamplingPeriod: "1m",
+			},
+			Writer: &VMAnomalyWriterValues{
+				DatasourceURL: "http://vminsert:8480/insert/0/prometheus",
+			},
+			ExtraVolumes: []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			},
+			ExtraVolumeMounts: []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			},
+		},
+		func() *vmv1.VMAnomaly {
+			cr := &vmv1.VMAnomaly{
+				TypeMeta: metav1.TypeMeta{
+					APIVersion: "operator.victoriametrics.com/v1",
+					Kind:       "VMAnomaly",
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "test-anomaly",
+					Namespace: "test-ns",
+				},
+			}
+			cr.Spec.Reader = &vmv1.VMAnomalyReadersSpec{
+				DatasourceURL:  "http://vmselect:8481/select/0/prometheus",
+				SamplingPeriod: "1m",
+			}
+			cr.Spec.Writer = &vmv1.VMAnomalyWritersSpec{
+				DatasourceURL: "http://vminsert:8480/insert/0/prometheus",
+			}
+			cr.Spec.Volumes = []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			}
+			cr.Spec.VolumeMounts = []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			}
+			return cr
+		},
+	)
 }
 func TestConvertVLAgent(t *testing.T) {
 	f := func(values *VLAgentHelmValues, expected func() *vmv1.VLAgent) {
@@ -713,6 +855,77 @@ func TestConvertVLCluster(t *testing.T) {
 			}
 		},
 	)
+
+	// extraVolumes/extraVolumeMounts must be propagated for every cluster role. See #2424.
+	f(
+		&VLClusterHelmValues{
+			VLSelect: ServerValues{
+				Enabled: ptr.To(true),
+				ExtraVolumes: []corev1.Volume{
+					{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+				},
+				ExtraVolumeMounts: []corev1.VolumeMount{
+					{Name: "extra", MountPath: "/extra"},
+				},
+			},
+			VLInsert: ServerValues{
+				Enabled: ptr.To(true),
+				ExtraVolumes: []corev1.Volume{
+					{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+				},
+				ExtraVolumeMounts: []corev1.VolumeMount{
+					{Name: "extra", MountPath: "/extra"},
+				},
+			},
+			VLStorage: ServerValues{
+				Enabled: ptr.To(true),
+				ExtraVolumes: []corev1.Volume{
+					{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+				},
+				ExtraVolumeMounts: []corev1.VolumeMount{
+					{Name: "extra", MountPath: "/extra"},
+				},
+			},
+		},
+		func() *vmv1.VLCluster {
+			extraVolumes := []corev1.Volume{
+				{Name: "extra", VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
+			}
+			extraVolumeMounts := []corev1.VolumeMount{
+				{Name: "extra", MountPath: "/extra"},
+			}
+			return &vmv1.VLCluster{
+				TypeMeta: metav1.TypeMeta{
+					APIVersion: "operator.victoriametrics.com/v1",
+					Kind:       "VLCluster",
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "test-name",
+					Namespace: "test-ns",
+				},
+				Spec: vmv1.VLClusterSpec{
+					VLSelect: &vmv1.VLSelect{
+						CommonAppsParams: vmv1beta1.CommonAppsParams{
+							Volumes:      extraVolumes,
+							VolumeMounts: extraVolumeMounts,
+						},
+					},
+					VLInsert: &vmv1.VLInsert{
+						CommonAppsParams: vmv1beta1.CommonAppsParams{
+							Volumes:      extraVolumes,
+							VolumeMounts: extraVolumeMounts,
+						},
+					},
+					VLStorage: &vmv1.VLStorage{
+						CommonAppsParams: vmv1beta1.CommonAppsParams{
+							Volumes:      extraVolumes,
+							VolumeMounts: extraVolumeMounts,
+						},
+					},
+				},
+			}
+		},
+	)
 }
 func TestConvertVLCollector(t *testing.T) {
 	f := func(values *VLCollectorHelmValues, expected func() *vmv1.VLAgent) {