diff --git a/other/metrics/grafana_seaweedfs.json b/other/metrics/grafana_seaweedfs.json
index 8fbd5989a..3b9b222b4 100644
--- a/other/metrics/grafana_seaweedfs.json
+++ b/other/metrics/grafana_seaweedfs.json
@@ -1,8 +1,8 @@
 {
   "__inputs": [
     {
-      "name": "DS_PROMETHEUS-DEV",
-      "label": "prometheus-dev",
+      "name": "DS_PROMETHEUS",
+      "label": "Prometheus",
       "description": "",
       "type": "datasource",
       "pluginId": "prometheus",
@@ -14,12 +14,12 @@
       "type": "grafana",
       "id": "grafana",
       "name": "Grafana",
-      "version": "4.6.2"
+      "version": "8.1.2"
     },
     {
       "type": "panel",
       "id": "graph",
-      "name": "Graph",
+      "name": "Graph (old)",
       "version": ""
     },
     {
@@ -33,7 +33,7 @@
     "list": [
       {
         "builtIn": 1,
-        "datasource": "${DS_PROMETHEUS-DEV}",
+        "datasource": "${DS_PROMETHEUS}",
         "enable": true,
         "hide": true,
         "iconColor": "rgba(0, 211, 255, 1)",
@@ -47,25 +47,40 @@
   "editable": true,
   "gnetId": 10423,
   "graphTooltip": 0,
-  "hideControls": false,
   "id": null,
   "links": [],
-  "refresh": "30s",
-  "rows": [
+  "panels": [
     {
-      "collapse": true,
-      "height": 251,
+      "collapsed": true,
+      "datasource": null,
+      "fieldConfig": {
+        "defaults": {},
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 0
+      },
+      "id": 69,
       "panels": [
         {
           "aliasColors": {},
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
+          "datasource": "${DS_PROMETHEUS}",
           "editable": true,
           "error": false,
           "fill": 1,
           "grid": {},
+          "gridPos": {
+            "h": 7,
+            "w": 8,
+            "x": 0,
+            "y": 1
+          },
           "id": 46,
           "legend": {
             "avg": false,
@@ -86,7 +101,6 @@
           "renderer": "flot",
           "seriesOverrides": [],
           "spaceLength": 10,
-          "span": 4,
           "stack": false,
           "steppedLine": false,
           "targets": [
@@ -151,11 +165,17 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
+          "datasource": "${DS_PROMETHEUS}",
           "editable": true,
           "error": false,
           "fill": 1,
           "grid": {},
+          "gridPos": {
+            "h": 7,
+            "w": 8,
+            "x": 8,
+            "y": 1
+          },
           "id": 49,
           "legend": {
             "avg": false,
@@ -176,7 +196,6 @@
           "renderer": "flot",
           "seriesOverrides": [],
           "spaceLength": 10,
-          "span": 4,
           "stack": false,
           "steppedLine": false,
           "targets": [
@@ -247,11 +266,17 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
+          "datasource": "${DS_PROMETHEUS}",
           "editable": true,
           "error": false,
           "fill": 1,
           "grid": {},
+          "gridPos": {
+            "h": 7,
+            "w": 8,
+            "x": 16,
+            "y": 1
+          },
           "id": 45,
           "legend": {
             "avg": false,
@@ -272,7 +297,6 @@
           "renderer": "flot",
           "seriesOverrides": [],
           "spaceLength": 10,
-          "span": 4,
           "stack": false,
           "steppedLine": false,
           "targets": [
@@ -343,11 +367,17 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
+          "datasource": "${DS_PROMETHEUS}",
           "editable": true,
           "error": false,
           "fill": 0,
           "grid": {},
+          "gridPos": {
+            "h": 7,
+            "w": 24,
+            "x": 0,
+            "y": 8
+          },
           "id": 2,
           "legend": {
             "alignAsTable": true,
@@ -368,7 +398,7 @@
           "lines": true,
           "linewidth": 1,
           "links": [],
-          "minSpan": 12,
+          "maxPerRow": 1,
           "nullPointMode": "null as zero",
           "percentage": false,
           "pointradius": 5,
@@ -381,7 +411,6 @@
             }
           ],
           "spaceLength": 10,
-          "span": 12,
           "stack": false,
           "steppedLine": false,
           "targets": [
@@ -433,1726 +462,1998 @@
         }
       ],
       "repeat": null,
-      "repeatIteration": null,
-      "repeatRowId": null,
-      "showTitle": true,
       "title": "Filer",
-      "titleSize": "h6"
+      "type": "row"
     },
     {
-      "collapse": false,
-      "height": 250,
-      "panels": [
-        {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
-          "editable": true,
-          "error": false,
-          "fill": 1,
-          "grid": {},
-          "id": 56,
-          "legend": {
-            "avg": false,
-            "current": false,
-            "max": false,
-            "min": false,
-            "show": true,
-            "total": false,
-            "values": false
-          },
-          "lines": true,
-          "linewidth": 1,
-          "links": [],
-          "nullPointMode": "null as zero",
-          "percentage": false,
-          "pointradius": 5,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [],
-          "spaceLength": 10,
-          "span": 4,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "histogram_quantile(0.90, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "average",
-              "refId": "A",
-              "step": 60
-            },
-            {
-              "expr": "histogram_quantile(0.90, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le, type))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "{{type}}",
-              "refId": "B",
-              "step": 60
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": null,
-          "timeShift": null,
-          "title": "S3 Request Duration 90th percentile",
-          "tooltip": {
-            "msResolution": true,
-            "shared": true,
-            "sort": 0,
-            "value_type": "cumulative"
-          },
-          "type": "graph",
-          "xaxis": {
-            "buckets": null,
-            "mode": "time",
-            "name": null,
-            "show": true,
-            "values": []
-          },
-          "yaxes": [
-            {
-              "format": "s",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": 0,
-              "show": true
-            },
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": false
-            }
-          ]
-        },
-        {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
-          "editable": true,
-          "error": false,
-          "fill": 1,
-          "grid": {},
-          "id": 57,
-          "legend": {
-            "avg": false,
-            "current": false,
-            "max": false,
-            "min": false,
-            "show": true,
-            "total": false,
-            "values": false
-          },
-          "lines": true,
-          "linewidth": 1,
-          "links": [],
-          "nullPointMode": "null as zero",
-          "percentage": false,
-          "pointradius": 5,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [],
-          "spaceLength": 10,
-          "span": 4,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "histogram_quantile(0.95, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "average",
-              "refId": "A",
-              "step": 60
-            },
-            {
-              "expr": "histogram_quantile(0.95, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le, type))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "{{type}}",
-              "refId": "B",
-              "step": 60
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": null,
-          "timeShift": null,
-          "title": "S3 Request Duration 95th percentile",
-          "tooltip": {
-            "msResolution": true,
-            "shared": true,
-            "sort": 0,
-            "value_type": "cumulative"
-          },
-          "type": "graph",
-          "xaxis": {
-            "buckets": null,
-            "mode": "time",
-            "name": null,
-            "show": true,
-            "values": []
-          },
-          "yaxes": [
-            {
-              "format": "s",
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-              "logBase": 1,
-              "max": null,
-              "min": 0,
-              "show": true
-            },
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": false
-            }
-          ]
-        },
-        {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
-          "editable": true,
-          "error": false,
-          "fill": 1,
-          "grid": {},
-          "id": 58,
-          "legend": {
-            "avg": false,
-            "current": false,
-            "max": false,
-            "min": false,
-            "show": true,
-            "total": false,
-            "values": false
-          },
-          "lines": true,
-          "linewidth": 1,
-          "links": [],
-          "nullPointMode": "null as zero",
-          "percentage": false,
-          "pointradius": 5,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [],
-          "spaceLength": 10,
-          "span": 4,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "histogram_quantile(0.99, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "average",
-              "refId": "A",
-              "step": 60
-            },
-            {
-              "expr": "histogram_quantile(0.99, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le, type))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "{{type}}",
-              "refId": "B",
-              "step": 60
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": null,
-          "timeShift": null,
-          "title": "S3 Request Duration 99th percentile",
-          "tooltip": {
-            "msResolution": true,
-            "shared": true,
-            "sort": 0,
-            "value_type": "cumulative"
-          },
-          "type": "graph",
-          "xaxis": {
-            "buckets": null,
-            "mode": "time",
-            "name": null,
-            "show": true,
-            "values": []
-          },
-          "yaxes": [
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-              "format": "s",
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-              "logBase": 1,
-              "max": null,
-              "min": 0,
-              "show": true
-            },
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": false
-            }
-          ]
-        },
-        {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
-          "editable": true,
-          "error": false,
-          "fill": 0,
-          "grid": {},
-          "id": 55,
-          "legend": {
-            "alignAsTable": true,
-            "avg": false,
-            "current": true,
-            "hideEmpty": true,
-            "hideZero": true,
-            "max": true,
-            "min": false,
-            "rightSide": true,
-            "show": true,
-            "sideWidth": 250,
-            "sort": "max",
-            "sortDesc": true,
-            "total": false,
-            "values": true
-          },
-          "lines": true,
-          "linewidth": 1,
-          "links": [],
-          "minSpan": 12,
-          "nullPointMode": "null as zero",
-          "percentage": false,
-          "pointradius": 5,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [
-            {
-              "alias": "total",
-              "lines": false
-            }
-          ],
-          "spaceLength": 10,
-          "span": 12,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "rate(SeaweedFS_s3_request_total[1m])",
-              "format": "time_series",
-              "intervalFactor": 2,
-              "legendFormat": "{{type}}",
-              "refId": "A",
-              "step": 30
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": null,
-          "timeShift": null,
-          "title": "S3 API QPS",
-          "tooltip": {
-            "msResolution": true,
-            "shared": true,
-            "sort": 2,
-            "value_type": "individual"
-          },
-          "type": "graph",
-          "xaxis": {
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-            "mode": "time",
-            "name": null,
-            "show": true,
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-              "format": "short",
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-              "min": "0",
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-            },
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": true
-            }
-          ]
-        },
-        {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
-          "editable": true,
-          "error": false,
-          "fill": 0,
-          "grid": {},
-          "hideTimeOverride": false,
-          "id": 59,
-          "legend": {
-            "alignAsTable": true,
-            "avg": false,
-            "current": true,
-            "hideEmpty": true,
-            "hideZero": true,
-            "max": true,
-            "min": false,
-            "rightSide": true,
-            "show": true,
-            "sideWidth": 250,
-            "sort": "max",
-            "sortDesc": true,
-            "total": false,
-            "values": true
-          },
-          "lines": true,
-          "linewidth": 1,
-          "links": [],
-          "minSpan": 12,
-          "nullPointMode": "null as zero",
-          "percentage": false,
-          "pointradius": 5,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [
-            {
-              "alias": "total",
-              "lines": false
-            }
-          ],
-          "spaceLength": 10,
-          "span": 12,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "sum by (type) (SeaweedFS_s3_request_total{type=~'PUT|COPY|POST|LIST'})*0.000005",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "{{type}} requests",
-              "refId": "A",
-              "step": 30
-            },
-            {
-              "expr": "sum (SeaweedFS_s3_request_total{type=~'PUT|COPY|POST|LIST'})*0.000005",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "All PUT, COPY, POST, LIST",
-              "refId": "C",
-              "step": 30
-            },
-            {
-              "expr": "sum (SeaweedFS_s3_request_total{type!~'PUT|COPY|POST|LIST'})*0.0000004",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "GET and all other",
-              "refId": "B"
-            },
-            {
-              "expr": "sum by (type) (SeaweedFS_s3_request_total{type!~'PUT|COPY|POST|LIST'})*0.0000004",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "{{type}} requests",
-              "refId": "D"
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": "1M",
-          "timeShift": null,
-          "title": "S3 API Monthly Cost if on AWS",
-          "tooltip": {
-            "msResolution": true,
-            "shared": true,
-            "sort": 2,
-            "value_type": "individual"
-          },
-          "type": "graph",
-          "xaxis": {
-            "buckets": null,
-            "mode": "time",
-            "name": null,
-            "show": true,
-            "values": []
-          },
-          "yaxes": [
-            {
-              "format": "currencyUSD",
-              "label": "Cost in US$",
-              "logBase": 1,
-              "max": null,
-              "min": "0",
-              "show": true
-            },
-            {
-              "format": "currencyUSD",
-              "label": "Write Cost",
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": false
-            }
-          ]
-        }
-      ],
+      "collapsed": false,
+      "datasource": null,
+      "fieldConfig": {
+        "defaults": {},
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 1
+      },
+      "id": 70,
+      "panels": [],
       "repeat": null,
-      "repeatIteration": null,
-      "repeatRowId": null,
-      "showTitle": true,
       "title": "S3 Gateway",
-      "titleSize": "h6"
+      "type": "row"
     },
     {
-      "collapse": true,
-      "height": 252,
-      "panels": [
+      "aliasColors": {},
+      "bars": false,
+      "dashLength": 10,
+      "dashes": false,
+      "datasource": "${DS_PROMETHEUS}",
+      "editable": true,
+      "error": false,
+      "fill": 1,
+      "fillGradient": 0,
+      "grid": {},
+      "gridPos": {
+        "h": 7,
+        "w": 8,
+        "x": 0,
+        "y": 2
+      },
+      "hiddenSeries": false,
+      "id": 56,
+      "legend": {
+        "avg": false,
+        "current": false,
+        "max": false,
+        "min": false,
+        "show": true,
+        "total": false,
+        "values": false
+      },
+      "lines": true,
+      "linewidth": 1,
+      "links": [],
+      "nullPointMode": "null as zero",
+      "options": {
+        "alertThreshold": true
+      },
+      "percentage": false,
+      "pluginVersion": "8.1.2",
+      "pointradius": 5,
+      "points": false,
+      "renderer": "flot",
+      "seriesOverrides": [],
+      "spaceLength": 10,
+      "stack": false,
+      "steppedLine": false,
+      "targets": [
         {
-          "aliasColors": {},
-          "bars": false,
-          "dashLength": 10,
-          "dashes": false,
-          "datasource": "${DS_PROMETHEUS-DEV}",
-          "editable": true,
-          "error": false,
-          "fill": 1,
-          "grid": {},
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-          "legend": {
-            "alignAsTable": false,
-            "avg": false,
-            "current": false,
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-          },
-          "lines": true,
-          "linewidth": 2,
-          "links": [],
-          "nullPointMode": "null as zero",
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-          "pointradius": 5,
-          "points": false,
-          "renderer": "flot",
-          "seriesOverrides": [],
-          "spaceLength": 10,
-          "span": 6,
-          "stack": false,
-          "steppedLine": false,
-          "targets": [
-            {
-              "expr": "histogram_quantile(0.99, sum(rate(SeaweedFS_volumeServer_request_seconds_bucket[1m])) by (le, exported_instance))",
-              "format": "time_series",
-              "hide": false,
-              "intervalFactor": 2,
-              "legendFormat": "{{exported_instance}}",
-              "refId": "B"
-            },
-            {
-              "expr": "histogram_quantile(0.99, sum(rate(SeaweedFS_volumeServer_request_seconds_bucket[1m])) by (le))",
-              "format": "time_series",
-              "intervalFactor": 2,
-              "legendFormat": "average",
-              "refId": "C"
-            }
-          ],
-          "thresholds": [],
-          "timeFrom": null,
-          "timeShift": null,
-          "title": "Volume Server Request Duration 99th percentile",
-          "tooltip": {
-            "msResolution": false,
-            "shared": true,
-            "sort": 0,
-            "value_type": "cumulative"
-          },
-          "type": "graph",
-          "xaxis": {
-            "buckets": null,
-            "mode": "time",
-            "name": null,
-            "show": true,
-            "values": []
-          },
-          "yaxes": [
-            {
-              "format": "s",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": 0,
-              "show": true
-            },
-            {
-              "format": "short",
-              "label": null,
-              "logBase": 1,
-              "max": null,
-              "min": null,
-              "show": true
-            }
-          ]
+          "expr": "histogram_quantile(0.90, sum(rate(SeaweedFS_s3_request_seconds_bucket[1m])) by (le))",
+          "format": "time_series",
+          "hide": false,
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+          "color": "#890f02"
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+          "format": "time_series",
+          "groupBy": [
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+              "params": [
+                "$__interval"
+              ],
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+          "orderByTime": "ASC",
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+          "step": 120,
+          "tags": []
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+          "format": "time_series",
+          "interval": "",
+          "intervalFactor": 2,
+          "legendFormat": "virtual {{exported_instance}}",
+          "refId": "B",
+          "step": 120
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+      "timeRegions": [],
+      "timeShift": null,
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+      "editable": true,
+      "error": false,
+      "fieldConfig": {
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+        "overrides": []
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+        "w": 8,
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+          "legendFormat": "{{exported_instance}}",
+          "metric": "",
+          "policy": "default",
+          "refId": "A",
+          "resultFormat": "time_series",
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+                "type": "field"
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+                "type": "mean"
+              }
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+          "tags": []
+        },
+        {
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+          "format": "time_series",
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+              "params": [
+                "$interval"
+              ],
+              "type": "time"
+            },
+            {
+              "params": [
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+              ],
+              "type": "fill"
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+          "hide": false,
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+          "legendFormat": "{{exported_instance}}",
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+          "resultFormat": "time_series",
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+          "tags": []
+        }
+      ],
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+      "timeFrom": null,
+      "timeRegions": [],
+      "timeShift": null,
+      "title": "Open File Descriptor",
+      "tooltip": {
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+        "shared": true,
+        "sort": 0,
+        "value_type": "individual"
+      },
+      "type": "graph",
+      "xaxis": {
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+        "mode": "time",
+        "name": null,
+        "show": true,
+        "values": []
+      },
+      "yaxes": [
+        {
+          "$$hashKey": "object:1087",
+          "format": "short",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        },
+        {
+          "$$hashKey": "object:1088",
+          "format": "short",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        }
+      ],
+      "yaxis": {
+        "align": false,
+        "alignLevel": null
+      }
     }
   ],
-  "schemaVersion": 14,
+  "refresh": "30s",
+  "schemaVersion": 30,
   "style": "dark",
   "tags": [],
   "templating": {
     "list": []
   },
   "time": {
-    "from": "now-30d",
+    "from": "now-3h",
     "to": "now"
   },
   "timepicker": {
@@ -2182,5 +2483,6 @@
   },
   "timezone": "browser",
   "title": "SeaweedFS",
+  "uid": "nh02dOVnz",
   "version": 2
 }