fix(monitor): place the Secure Gateway template on an active storage

AppImage/components/disk-exclusions.tsx

@@ -18,7 +18,6 @@ interface DiskEntry {
   rotational: boolean
   excluded: boolean
   excluded_at: string | null
-  idle: boolean
   present: boolean
 }
 
@@ -206,15 +205,6 @@ export function DiskExclusions() {
                             {t("settings.diskExclusions.excluded")}
                           </Badge>
                         )}
-                        {!excluded && disk.idle && (
-                          <Badge
-                            variant="secondary"
-                            className="text-[10px] px-1.5 py-0 bg-muted text-muted-foreground"
-                            title={t("storage.idleTitle")}
-                          >
-                            {t("storage.idle")}
-                          </Badge>
-                        )}
                         {!disk.present && (
                           <Badge variant="secondary" className="text-[10px] px-1.5 py-0 bg-muted text-muted-foreground">
                             {t("settings.diskExclusions.notConnected")}

AppImage/components/storage-overview.tsx

@@ -2,7 +2,7 @@
 
 import { useEffect, useState } from "react"
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
-import { HardDrive, Database, AlertTriangle, CheckCircle2, XCircle, Square, Thermometer, Archive, Info, Clock, Usb, Server, Activity, FileText, Play, Loader2, Download, Plus, Trash2, Settings, Power, Moon, EyeOff } from "lucide-react"
+import { HardDrive, Database, AlertTriangle, CheckCircle2, XCircle, Square, Thermometer, Archive, Info, Clock, Usb, Server, Activity, FileText, Play, Loader2, Download, Plus, Trash2, Settings, Power, EyeOff } from "lucide-react"
 import { Badge } from "@/components/ui/badge"
 import { Progress } from "@/components/ui/progress"
 import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle } from "@/components/ui/dialog"
@@ -71,7 +71,6 @@ interface DiskInfo {
   // badge AND to suppress the (stale) temperature value, so the
   // operator understands the graph is frozen on purpose — issue #232.
   standby?: boolean
-  idle?: boolean
   excluded?: boolean
   health: string
   power_on_hours?: number
@@ -303,6 +302,24 @@ function groupDisksBySlot(disks: DiskInfo[]): [string | null, DiskInfo[]][] {
 }
 
 // `disksOnly` is the PBS Monitor: its disks and pools, without Proxmox VE storages.
+// Same ring as the disk wear gauge, with a faint track so 0% still reads.
+// Used for the fragmentation of a ZFS pool.
+function PercentRing({ value, color, label }: { value: number; color: string; label: string }) {
+  const pct = Math.max(0, Math.min(100, value))
+  return (
+    <svg width="88" height="88" viewBox="0 0 88 88" className="flex-shrink-0">
+      <circle cx="44" cy="44" r="35" fill="none" stroke={color} strokeOpacity="0.15" strokeWidth="6" />
+      <circle cx="44" cy="44" r="35" fill="none" stroke={color} strokeWidth="6"
+        strokeDasharray={`${pct * 2.199} 219.9`}
+        strokeLinecap="round" transform="rotate(-90 44 44)" />
+      <text x="44" y="40" textAnchor="middle" fill={color} fontSize="20" fontWeight="700">{pct}%</text>
+      <text x="44" y="56" textAnchor="middle" fill="currentColor" fontSize="12" className="text-muted-foreground">{label}</text>
+    </svg>
+  )
+}
+
+const zfsFragmentationColor = (pct: number) => (pct > 80 ? "#ef4444" : pct > 50 ? "#eab308" : "#06b6d4")
+
 export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } = {}) {
   const t = useT()
 
@@ -332,6 +349,12 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
   // 85 vh capped by the visual viewport otherwise). Keeps every
   // detail modal at a matching size across the app.
   const [isStandalone, setIsStandalone] = useState(false)
+  // Disk, ZFS pool and remote mount details share one size.
+  const detailDialogClass = `max-w-4xl flex flex-col p-0 overflow-hidden ${
+    isStandalone
+      ? "h-[95vh] sm:h-[90vh]"
+      : "h-[85vh] sm:h-[85vh] max-h-[calc(100dvh-env(safe-area-inset-top)-env(safe-area-inset-bottom)-40px)]"
+  }`
 
   useEffect(() => {
     const checkStandalone = () => {
@@ -561,7 +584,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
   // in 4 different disk-list views (system / data / pool / other) and we
   // want them all to behave identically — issue #232 fix.
   // Why a disk shows no live temperature, when it doesn't: excluded by the
-  // user, parked, or idle and deliberately not read. Shared by every view
+  // user, or parked. Shared by every view
   // that paints a disk's temperature, so they cannot disagree.
   const renderNoReadingBadge = (disk: DiskInfo) => {
     if (disk.excluded) {
@@ -586,17 +609,6 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
         </Badge>
       )
     }
-    if (disk.idle) {
-      return (
-        <Badge
-          className="bg-muted text-muted-foreground border-border gap-1"
-          title={t("storage.idleTitle")}
-        >
-          <Moon className="h-3 w-3" />
-          {t("storage.idle")}
-        </Badge>
-      )
-    }
     return null
   }
 
@@ -1100,7 +1112,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
 
     storageData.disks.forEach((disk) => {
       // Match disk rows: policy-suppressed cached readings are not live temperatures.
-      if (disk.standby || disk.idle || disk.excluded || typeof disk.temperature !== "number" ||
+      if (disk.standby || disk.excluded || typeof disk.temperature !== "number" ||
           !Number.isFinite(disk.temperature) || disk.temperature <= 0) {
         unavailable++
         return
@@ -1735,7 +1747,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
           overlay with text-xs/text-[10px] all over and looked
           shrunken next to the rest of the modals. */}
       <Dialog open={!!mountDetail} onOpenChange={(open) => { if (!open) setMountDetail(null) }}>
-        <DialogContent className="max-w-2xl max-h-[80vh] sm:max-h-[85vh] overflow-hidden flex flex-col p-0">
+        <DialogContent className={detailDialogClass}>
           {mountDetail && (() => {
             const m = mountDetail
             const isStale = m.status === "stale"
@@ -1782,7 +1794,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                   </DialogDescription>
                 </DialogHeader>
 
-                <div className="px-6 pb-6 overflow-auto space-y-5">
+                <div className="flex-1 min-h-0 px-6 pb-6 overflow-y-auto space-y-5">
                   {/* Type + tags */}
                   <div className="flex items-center gap-2 flex-wrap">
                     <Badge className={getStorageTypeBadge(m.fstype)}>{m.fstype}</Badge>
@@ -1895,7 +1907,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
               {storageData.zfs_pools.map((pool) => (
                 <div
                   key={pool.name}
-                  className="border rounded-lg p-4 cursor-pointer hover:bg-muted/50 transition-colors"
+                  className="border border-white/10 rounded-lg p-4 cursor-pointer bg-card hover:bg-white/5 transition-colors"
                   onClick={() => setSelectedPool(pool)}
                 >
                   <div className="flex items-center justify-between mb-2">
@@ -1903,7 +1915,10 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                       <h3 className="font-semibold text-lg">{pool.name}</h3>
                       {getHealthBadge(pool.health)}
                     </div>
-                    {getHealthIcon(pool.health)}
+                    <div className="flex items-center gap-2">
+                      {pool.capacity != null && <span className="text-sm font-medium">{pool.capacity}%</span>}
+                      {getHealthIcon(pool.health)}
+                    </div>
                   </div>
                   {pool.details_available && (() => {
                     const dataDevices = (pool.vdevs ?? [])
@@ -1930,6 +1945,18 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                       </p>
                     )
                   })()}
+                  {pool.capacity != null && (
+                    <Progress
+                      value={pool.capacity}
+                      className={`h-2 mb-2 ${
+                        pool.capacity > 90
+                          ? "[&>div]:bg-red-500"
+                          : pool.capacity > 75
+                            ? "[&>div]:bg-yellow-500"
+                            : "[&>div]:bg-blue-500"
+                      }`}
+                    />
+                  )}
                   <div className="grid grid-cols-3 gap-4 text-sm">
                     <div>
                       <p className="text-sm text-muted-foreground">{t("storage.size")}</p>
@@ -1954,7 +1981,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
       {/* ZFS Pool Details Dialog: re-resolved from storageData so it follows
           the background refresh while open (e.g. resilver progress). */}
       <Dialog open={selectedPool !== null} onOpenChange={(open) => { if (!open) setSelectedPool(null) }}>
-        <DialogContent className="max-w-3xl max-h-[85vh] overflow-y-auto">
+        <DialogContent className={detailDialogClass}>
           {selectedPool && (() => {
             const pool = storageData.zfs_pools.find((p) => p.name === selectedPool.name) ?? selectedPool
             const classOrder: ZFSVdev["class"][] = ["normal", "special", "dedup", "log", "cache", "spare"]
@@ -1964,7 +1991,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
             const showSlowIos = vdevs.some((v) => v.devices.some((d) => d.slow_ios > 0))
             return (
               <>
-                <DialogHeader>
+                <DialogHeader className="px-6 pt-6 pb-2">
                   <DialogTitle className="flex items-center gap-3">
                     <Database className="h-5 w-5" />
                     {pool.name}
@@ -1973,7 +2000,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                   <DialogDescription>{t("storage.zfs.poolDetails")}</DialogDescription>
                 </DialogHeader>
 
-                <div className="space-y-5">
+                <div className="flex-1 min-h-0 px-6 pb-6 overflow-y-auto flex flex-col gap-5">
                   {(pool.status || pool.action) && (
                     <div className="rounded-lg border border-yellow-500/30 bg-yellow-500/10 p-3 text-sm space-y-1">
                       {pool.status && <p><span className="font-medium">{t("storage.zfs.status")}:</span> {pool.status}</p>}
@@ -1981,35 +2008,57 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                     </div>
                   )}
 
-                  <div className="grid grid-cols-2 md:grid-cols-3 gap-4 text-sm">
-                    <div>
-                      <p className="text-muted-foreground">{t("storage.size")}</p>
-                      <p className="font-medium">{pool.size}</p>
-                    </div>
-                    <div>
-                      <p className="text-muted-foreground">{t("storage.allocated")}</p>
-                      <p className="font-medium">{pool.allocated}</p>
-                    </div>
-                    <div>
-                      <p className="text-muted-foreground">{t("storage.free")}</p>
-                      <p className="font-medium">{pool.free}</p>
-                    </div>
-                    {pool.capacity != null && (
-                      <div>
-                        <p className="text-muted-foreground">{t("storage.zfs.capacity")}</p>
-                        <p className="font-medium">{pool.capacity}%</p>
+                  <div className="grid gap-4 md:grid-cols-2">
+                    <div className="rounded-lg border border-border p-4 flex flex-col justify-center gap-3">
+                      <div className="flex items-end justify-between gap-3">
+                        <div>
+                          <p className="text-sm text-muted-foreground">{t("storage.free")}</p>
+                          <p className="text-lg font-semibold">{pool.free}</p>
+                        </div>
+                        {pool.capacity != null && <span className="text-sm font-medium">{pool.capacity}%</span>}
                       </div>
-                    )}
-                    {pool.fragmentation != null && (
-                      <div>
-                        <p className="text-muted-foreground">{t("storage.zfs.fragmentation")}</p>
-                        <p className="font-medium">{pool.fragmentation}%</p>
+                      {pool.capacity != null && (
+                        <Progress
+                          value={pool.capacity}
+                          className={`h-2 ${
+                            pool.capacity > 90
+                              ? "[&>div]:bg-red-500"
+                              : pool.capacity > 75
+                                ? "[&>div]:bg-yellow-500"
+                                : "[&>div]:bg-blue-500"
+                          }`}
+                        />
+                      )}
+                      <div className="grid grid-cols-2 gap-3 text-sm">
+                        <div>
+                          <p className="text-muted-foreground">{t("storage.allocated")}</p>
+                          <p className="font-medium">{pool.allocated}</p>
+                        </div>
+                        <div className="text-right">
+                          <p className="text-muted-foreground">{t("storage.zfs.totalSize")}</p>
+                          <p className="font-medium">{pool.size}</p>
+                        </div>
                       </div>
-                    )}
-                    {pool.dedup_ratio != null && (
-                      <div>
-                        <p className="text-muted-foreground">{t("storage.zfs.dedupRatio")}</p>
-                        <p className="font-medium">{pool.dedup_ratio.toFixed(2)}x</p>
+                    </div>
+                    {(pool.fragmentation != null || pool.dedup_ratio != null) && (
+                      <div className="rounded-lg border border-border p-4 flex items-center gap-5">
+                        {pool.fragmentation != null && (
+                          <PercentRing value={pool.fragmentation} color={zfsFragmentationColor(pool.fragmentation)} label={t("storage.zfs.fragShort")} />
+                        )}
+                        <div className="min-w-0 flex-1 space-y-3 text-sm">
+                          {pool.fragmentation != null && (
+                            <div>
+                              <p className="text-muted-foreground">{t("storage.zfs.fragmentation")}</p>
+                              <p className="font-medium">{pool.fragmentation}%</p>
+                            </div>
+                          )}
+                          {pool.dedup_ratio != null && (
+                            <div>
+                              <p className="text-muted-foreground">{t("storage.zfs.dedupRatio")}</p>
+                              <p className="font-medium">{pool.dedup_ratio.toFixed(2)}x</p>
+                            </div>
+                          )}
+                        </div>
                       </div>
                     )}
                   </div>
@@ -2019,7 +2068,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                   ) : (
                     <>
                       {/* Scrub / resilver */}
-                      <div className="space-y-2">
+                      <div className="rounded-lg border border-border p-4 space-y-2">
                         <h3 className="text-sm font-semibold text-muted-foreground uppercase tracking-wide">
                           {t("storage.zfs.scanTitle")}
                         </h3>
@@ -2054,16 +2103,14 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
                         </p>
                       </div>
 
-                      {/* Layout: one block per top-level vdev */}
-                      <div className="space-y-3">
+                      {/* Layout: one block per top-level vdev; the last one
+                          reaches the bottom of the dialog. */}
+                      <div className="flex-1 flex flex-col gap-3">
                         <h3 className="text-sm font-semibold text-muted-foreground uppercase tracking-wide">
                           {t("storage.zfs.layout")}
-                          {getZfsLayoutSummary(pool) && (
-                            <span className="ml-2 normal-case font-normal text-foreground">{getZfsLayoutSummary(pool)}</span>
-                          )}
                         </h3>
                         {vdevs.map((vdev, i) => (
-                          <div key={`${vdev.class}-${vdev.name}-${i}`} className="border rounded-lg">
+                          <div key={`${vdev.class}-${vdev.name}-${i}`} className={`border rounded-lg ${i === vdevs.length - 1 ? "flex-1" : ""}`}>
                             <div className="flex flex-wrap items-center gap-2 px-3 py-2 border-b bg-muted/30">
                               <Badge variant="outline" className="text-xs">{t(`storage.zfs.classes.${vdev.class}`)}</Badge>
                               <span className="text-sm font-medium">{getZfsVdevLabel(vdev)}</span>
@@ -2219,13 +2266,7 @@ export function StorageOverview({ disksOnly = false }: { disksOnly?: boolean } =
           setSmartJsonData(null)
         }
       }}>
-        <DialogContent
-          className={`max-w-4xl flex flex-col p-0 overflow-hidden ${
-            isStandalone
-              ? "h-[95vh] sm:h-[90vh]"
-              : "h-[85vh] sm:h-[85vh] max-h-[calc(100dvh-env(safe-area-inset-top)-env(safe-area-inset-bottom)-40px)]"
-          }`}
-        >
+        <DialogContent className={detailDialogClass}>
           <DialogHeader className="px-6 pt-6 pb-0">
             <DialogTitle className="flex items-center gap-2">
               {selectedDisk?.connection_type === 'usb' ? (

AppImage/messages/en/common.json

@@ -322,6 +322,8 @@
       "fragmentation": "Fragmentation",
       "dedupRatio": "Dedup Ratio",
       "layout": "Layout",
+      "totalSize": "Total size",
+      "fragShort": "Frag.",
       "singleDisk": "Single disk",
       "stripe": "Stripe",
       "mirror": "Mirror",

AppImage/messages/es/common.json

@@ -369,8 +369,8 @@
     "notApplicable": "n / A",
     "error": "Error",
     "system": "Sistema",
-    "standby": "En reposo",
-    "standbyTitle": "La unidad está en espera: se omitió smartctl para mantenerla apagada",
+    "standby": "En espera",
+    "standbyTitle": "El disco está parado: no se le envía nada para no despertarlo",
     "filesystemCorruption": "Se detectó corrupción en el sistema de archivos",
     "ioErrorOne": "{count} Error de E/S en 5 minutos",
     "ioErrorMany": "{count} Errores de E/S en 5 minutos",
@@ -983,53 +983,55 @@
     "temperatureUnavailableCount": "No disponible: {count}",
     "zfs": {
       "classes": {
-        "normal": "datos",
+        "normal": "Datos",
         "special": "Especial",
-        "dedup": "Deduplicación",
-        "log": "Iniciar sesión",
-        "cache": "caché",
+        "dedup": "Dedup",
+        "log": "Log",
+        "cache": "Caché",
         "spare": "Repuesto"
       },
-      "poolDetails": "diseño de la piscina, estado de limpieza y estado del dispositivo",
-      "detailsUnavailable": "El diseño detallado del grupo requiere OpenZFS 2.3 o posterior.",
+      "poolDetails": "Estructura del pool, estado del scrub y salud de los dispositivos",
+      "detailsUnavailable": "La estructura detallada del pool requiere OpenZFS 2.3 o posterior.",
       "status": "Estado",
       "action": "Acción",
       "capacity": "Capacidad",
       "fragmentation": "Fragmentación",
-      "dedupRatio": "Relación de deduplicación",
-      "layout": "Diseño",
-      "singleDisk": "disco único",
-      "stripe": "Raya",
+      "dedupRatio": "Ratio de deduplicación",
+      "layout": "Estructura",
+      "totalSize": "Tamaño total",
+      "fragShort": "Frag.",
+      "singleDisk": "Disco único",
+      "stripe": "Stripe",
       "mirror": "Espejo",
       "raidz": "RAIDZ{parity}",
       "draid": "dRAID{parity}",
-      "diskCountOne": "disco {count}",
-      "diskCountMany": "discos {count}",
-      "errorsReported": "Errores reportados",
+      "diskCountOne": "{count} disco",
+      "diskCountMany": "{count} discos",
+      "errorsReported": "Errores detectados",
       "scanTitle": "Scrub / Resilver",
-      "scrub": "fregar",
+      "scrub": "Scrub",
       "resilver": "Resilver",
-      "neverScrubbed": "Nunca fregado",
-      "scanRunning": "{kind} en progreso ({percent}%)",
+      "neverScrubbed": "Sin scrub todavía",
+      "scanRunning": "{kind} en curso ({percent}%)",
       "scanCanceled": "{kind} cancelado",
       "scanFinished": "{kind} terminado {date}",
-      "started": "iniciado",
-      "ended": "Terminado",
-      "repaired": "reparado",
-      "scanErrors": "errores de escaneo",
-      "dataErrors": "errores de datos {count}",
+      "started": "Inicio",
+      "ended": "Fin",
+      "repaired": "Reparado",
+      "scanErrors": "Errores del análisis",
+      "dataErrors": "{count} errores de datos",
       "noDataErrors": "No hay errores de datos conocidos",
       "device": "Dispositivo",
       "disk": "Disco",
       "state": "Estado",
-      "readErrors": "errores de lectura",
-      "writeErrors": "errores de escritura",
-      "checksumErrors": "errores de suma de comprobación",
+      "readErrors": "Errores de lectura",
+      "writeErrors": "Errores de escritura",
+      "checksumErrors": "Errores de checksum",
       "readShort": "R",
       "writeShort": "W",
       "checksumShort": "CK",
       "slowIos": "E/S lentas",
-      "via": "vía {name}"
+      "via": "a través de {name}"
     },
     "storageController": "Controlador de almacenamiento",
     "noController": "No se detectó ningún controlador",

AppImage/scripts/disk_temperature_history.py

@@ -410,60 +410,16 @@ def _extract_temperature(data: dict[str, Any]) -> Optional[float]:
 # ---------------------------------------------------------------------------
 
 
-# ── Leaving idle and excluded disks alone ──────────────────────────
+# ── Leaving excluded disks alone ─────────────────────────────────
 #
-# `-n standby` keeps a periodic reader from waking a disk that is asleep.
-# It does not let an awake one fall asleep: a drive's spin-down timer
-# counts time without commands, and a read every minute resets it, so an
-# unused drive whose timer is longer than that never spins down — and a
-# drive that parks its heads when idle loads them again on every read.
-#
-# So a rotational disk with no I/O since it was last looked at is not read
-# at all, not even asked for its power mode. The counters come from
-# /proc/diskstats, which costs no disk access, and a SMART query does not
-# move them — passthrough commands are not accounted as reads or writes —
-# so any change means something else used the disk. A disk in use is
-# already awake, and reading it then costs nothing. Solid-state disks have
-# no spindle and no heads, and keep their reading.
-#
-# A disk seen for the first time is read once, so a Monitor that has just
-# started still has values to show; after that it is left alone for as
-# long as nothing uses it.
+# A disk the user excludes in Settings receives nothing from a periodic
+# reader, not even the power-mode question, so it can spin down on its own
+# timer. Every other disk is read on schedule: `-n standby` still keeps a
+# reader from waking one that is already asleep.
 
 READ = "read"
-IDLE = "idle"
 EXCLUDED = "excluded"
 
-_last_io: dict[str, tuple[int, int]] = {}
-_idle_state: dict[str, float] = {}
-_IDLE_TTL = 600  # same horizon as the standby badge
-
-
-def _read_diskstats() -> dict[str, tuple[int, int]]:
-    """Reads and writes completed per device, from /proc/diskstats."""
-    out: dict[str, tuple[int, int]] = {}
-    try:
-        with open("/proc/diskstats") as f:
-            for line in f:
-                parts = line.split()
-                if len(parts) < 8:
-                    continue
-                try:
-                    out[parts[2]] = (int(parts[3]), int(parts[7]))
-                except ValueError:
-                    continue
-    except OSError:
-        pass
-    return out
-
-
-def _is_rotational(disk_name: str) -> bool:
-    try:
-        with open(f"/sys/block/{disk_name}/queue/rotational") as f:
-            return f.read().strip() == "1"
-    except OSError:
-        return False
-
 
 _EXCLUDED_TTL = 15
 _excluded_cache: Optional[tuple[float, set]] = None
@@ -503,50 +459,20 @@ _excluded_disk_names = excluded_disk_names
 
 
 def disk_read_policy(disk_name: str, excluded: Optional[set] = None) -> str:
-    """Whether a periodic reader may touch this disk now: READ, IDLE or
-    EXCLUDED. Shared by every reader that runs on its own, so the
-    temperature poller and the storage view cannot disagree about a disk.
-    ``excluded`` lets a caller that checks many disks pass the list once."""
+    """Whether a periodic reader may touch this disk: READ or EXCLUDED.
+    Shared by every reader that runs on its own, so the temperature poller
+    and the storage view cannot disagree about a disk. ``excluded`` lets a
+    caller that checks many disks pass the list once."""
     if excluded is None:
         excluded = _excluded_disk_names()
-    if disk_name in excluded:
-        _idle_state.pop(disk_name, None)
-        return EXCLUDED
-    if not _is_rotational(disk_name):
-        return READ
-    current = _read_diskstats().get(disk_name)
-    with _cache_lock:
-        previous = _last_io.get(disk_name)
-        if current is not None:
-            _last_io[disk_name] = current
-    if current is None or previous is None or current != previous:
-        _idle_state.pop(disk_name, None)
-        return READ
-    _idle_state[disk_name] = time.time()
-    return IDLE
-
-
-def settle_own_reads(disk_names) -> None:
-    """A reader that has just read these disks itself takes their counters as
-    the new baseline, so its own I/O never counts as activity."""
-    stats = _read_diskstats()
-    with _cache_lock:
-        for name in disk_names:
-            if name in _last_io and name in stats:
-                _last_io[name] = stats[name]
-
-
-def is_disk_idle(disk_name: str) -> bool:
-    """True while the disk is being left alone for having no I/O."""
-    ts = _idle_state.get(disk_name)
-    return ts is not None and (time.time() - ts) < _IDLE_TTL
+    return EXCLUDED if disk_name in excluded else READ
 
 
 def record_all_disk_temperatures() -> int:
     """Sample the disks that may be read now and persist their temperature.
 
-    USB disks are included. A disk the user excluded, or a rotational one
-    with no I/O since the last cycle, is skipped — see ``disk_read_policy``.
+    USB disks are included. A disk the user excluded is skipped — see
+    ``disk_read_policy``.
 
     Sampling fans out across a thread pool so a host with N disks pays
     roughly the time of the slowest single ``smartctl`` call instead of

AppImage/scripts/flask_health_routes.py

@@ -807,7 +807,6 @@ def get_disks_for_exclusion():
                 **disk,
                 'excluded': entry is not None,
                 'excluded_at': entry.get('excluded_at') if entry else None,
-                'idle': _dth.is_disk_idle(disk['name']),
                 'present': True,
             })
         # An excluded disk that is not connected right now — an unplugged USB
@@ -826,7 +825,6 @@ def get_disks_for_exclusion():
                 'rotational': False,
                 'excluded': True,
                 'excluded_at': entry.get('excluded_at'),
-                'idle': False,
                 'present': False,
             })
         result.sort(key=lambda d: (not d['present'], d['name']))

AppImage/scripts/flask_server.py

@@ -4418,9 +4418,6 @@ def get_system_disks():
             ['pvs', *dev_args, '--noheadings', '-o', 'pv_name,vg_name'],
             capture_output=True, text=True, timeout=5
         ) if dev_args is not None else None
-        if result is not None:
-            from lvm_device_scope import settle_scan_reads
-            settle_scan_reads()
         if result is not None and result.returncode == 0:
             for line in result.stdout.strip().split('\n'):
                 if line.strip():
@@ -4558,12 +4555,10 @@ def get_storage_info():
                         # temperature graph isn't a monitor bug — the
                         # disk is parked. See issue #232.
                         in_standby = False
-                        in_idle = False
                         in_excluded = False
                         try:
                             import disk_temperature_history as _dth
                             in_standby = _dth.is_disk_in_standby(disk_name)
-                            in_idle = _dth.is_disk_idle(disk_name)
                             in_excluded = disk_name in _dth.excluded_disk_names()
                         except Exception:
                             pass
@@ -4574,7 +4569,6 @@ def get_storage_info():
                             'size_bytes': disk_size_bytes,
                             'temperature': smart_data.get('temperature', 0),
                             'standby': in_standby,
-                            'idle': in_idle,
                             'excluded': in_excluded,
                             'health': smart_data.get('health', 'unknown'),
                             'power_on_hours': smart_data.get('power_on_hours', 0),
@@ -5305,28 +5299,19 @@ def get_smart_data(disk_name):
     if cached and now - cached[0] < _SMART_RESULT_TTL:
         return dict(cached[1])
 
-    # Excluded, or rotational with no I/O since it was last looked at: send
-    # it nothing — not even the power-mode question below, which is still a
-    # command. Serve what is known, without a temperature that would only be
-    # stale. Same rule as the temperature poller, so the two agree.
+    # Excluded in Settings: send it nothing — not even the power-mode
+    # question below, which is still a command. Serve what is known, without
+    # a temperature that would only be stale. Same rule as the temperature
+    # poller, so the two agree.
     try:
         import disk_temperature_history as _dth
         policy = _dth.disk_read_policy(disk_name)
     except Exception:
         policy = 'read'
     if policy != 'read':
-        if not cached and policy == 'idle' and not _hdd_in_standby(disk_name):
-            # Nothing is known of it yet, as after a restart: a disk that is
-            # spinning is read once; a parked one is not woken.
-            result = _get_smart_data_uncached(disk_name)
-            _dth.settle_own_reads([disk_name])
-            if _smart_data_useful(result):
-                _smart_result_cache[disk_name] = (now, dict(result))
-                cached = _smart_result_cache[disk_name]
         base = dict(cached[1]) if cached else _smart_identity_payload(disk_name)
         base['temperature'] = 0
-        base['excluded'] = policy == 'excluded'
-        base['idle'] = policy == 'idle'
+        base['excluded'] = True
         return base
 
     if _hdd_in_standby(disk_name):

AppImage/scripts/health_monitor.py

@@ -2288,9 +2288,6 @@ class HealthMonitor:
                 text=True,
                 timeout=3
             )
-            from lvm_device_scope import settle_scan_reads
-            settle_scan_reads()
-            
             if result.returncode != 0:
                 return {'status': 'WARNING', 'reason': 'lvs command failed'}
             
@@ -2314,7 +2311,6 @@ class HealthMonitor:
                     text=True,
                     timeout=3
                 )
-                settle_scan_reads()
                 if vg_result.returncode == 0 and vg_result.stdout.strip():
                     return {'status': 'WARNING', 'reason': 'No active LVM volumes detected'}
                 else:

AppImage/scripts/lvm_device_scope.py

@@ -9,20 +9,17 @@
 # Last Updated: 16/10/2026
 # ==========================================================
 # Description:
-# Applies the automatic disk-read policy to LVM metadata scans in both
-# Monitor readers. Excluded and idle disks receive no power-mode probe;
-# every device built on them is excluded too, and the scan's own reads
-# are not taken as activity. No eligible devices means no scan.
+# Applies the disk exclusions to LVM metadata scans in both Monitor
+# readers. Excluded disks receive no power-mode probe and a disk in
+# standby is not woken; every device built on them is excluded too. No
+# eligible devices means no scan.
 # ==========================================================
 
 import json
 import re
 import subprocess
-import threading
 
 _NAME = re.compile(r"[A-Za-z0-9._+-]+")
-_scan_lock = threading.Lock()
-_scanned_disks = set()
 
 
 def _topology():
@@ -116,14 +113,11 @@ def lvm_device_args(standby_check):
         excluded = excluded_disk_names()
         blocked = set()
         for disk in sorted(disks):
-            # Test policy first: even CHECK POWER MODE is forbidden for an
-            # excluded/idle disk. Some USB bridges do not honour -n standby.
+            # Test the exclusion first: even CHECK POWER MODE is forbidden
+            # for an excluded disk. Some USB bridges do not honour -n standby.
             if disk_read_policy(disk, excluded) != "read" or standby_check(disk):
                 blocked.add(disk)
         allowed = sorted(f"/dev/{name}" for name in volumes if not (_disks_under(name, parents) & blocked))
-        with _scan_lock:
-            _scanned_disks.clear()
-            _scanned_disks.update(disks - blocked)
         if not blocked:
             return []
         filters = _lvm_filters()
@@ -140,15 +134,3 @@ def lvm_device_args(standby_check):
         # Unavailable exclusions, topology or policy are not permission to
         # open devices that may have been deliberately excluded.
         return None
-
-
-def settle_scan_reads():
-    """The LVM scan reads the disks it is allowed to. Those reads are its
-    own, so they must not make an unused disk look busy at the next check."""
-    try:
-        from disk_temperature_history import settle_own_reads
-        with _scan_lock:
-            disks = set(_scanned_disks)
-        settle_own_reads(disks)
-    except Exception:
-        pass

AppImage/scripts/oci_manager.py

@@ -48,7 +48,8 @@ DEV_SCRIPTS_CATALOG = os.path.join(os.path.dirname(__file__), "..", "..", "oci",
 # Encryption key file
 ENCRYPTION_KEY_FILE = os.path.join(OCI_BASE_DIR, ".encryption_key")
 
-# Default storage for templates
+# Preferred storage for templates; another active one is used when it is
+# disabled, as `local` is on a BTRFS installation.
 DEFAULT_STORAGE = "local"
 
 # Default storage for rootfs (will be auto-detected)
@@ -389,7 +390,22 @@ def _host_arch() -> str:
     }.get(machine, 'amd64')
 
 
-def _download_alpine_template(storage: str = DEFAULT_STORAGE) -> bool:
+def _template_storage() -> str:
+    """An active storage that holds container templates: `local` when it
+    can, otherwise the first other one, such as `local-btrfs`."""
+    rc, out, _ = _run_pve_cmd(["pvesm", "status", "--content", "vztmpl"])
+    active = []
+    if rc == 0:
+        for line in out.strip().split("\n")[1:]:
+            parts = line.split()
+            if len(parts) >= 3 and parts[2] == "active":
+                active.append(parts[0])
+    if not active or DEFAULT_STORAGE in active:
+        return DEFAULT_STORAGE
+    return active[0]
+
+
+def _download_alpine_template(storage: Optional[str] = None) -> bool:
     """Download the latest Alpine LXC template using pveam.
 
     Filters by the host's architecture so an x86_64 host does not end up
@@ -397,6 +413,7 @@ def _download_alpine_template(storage: str = DEFAULT_STORAGE) -> bool:
     kept the last match and could pick any arch that `pveam available`
     happened to list (issue #324).
     """
+    storage = storage or _template_storage()
     print("[*] Downloading Alpine Linux template...")
     logger.info("Downloading Alpine template via pveam")
 
@@ -443,8 +460,9 @@ def _download_alpine_template(storage: str = DEFAULT_STORAGE) -> bool:
     return True
 
 
-def _find_alpine_template(storage: str = DEFAULT_STORAGE, auto_download: bool = True) -> Optional[str]:
+def _find_alpine_template(storage: Optional[str] = None, auto_download: bool = True) -> Optional[str]:
     """Find an available Alpine LXC template, optionally downloading if not found."""
+    storage = storage or _template_storage()
     template_dir = "/var/lib/vz/template/cache"
     
     # Try to get correct path from storage config
@@ -577,7 +595,7 @@ def _configure_tailscale(vmid: int, config: Dict[str, Any]) -> bool:
 # =================================================================
 # OCI Image Management
 # =================================================================
-def pull_oci_image(image: str, tag: str = "latest", storage: str = DEFAULT_STORAGE) -> Dict[str, Any]:
+def pull_oci_image(image: str, tag: str = "latest", storage: Optional[str] = None) -> Dict[str, Any]:
     """
     Pull an OCI image from a registry and store as LXC template.
     Uses Proxmox's pvesh API to download OCI images (same as GUI).
@@ -590,6 +608,7 @@ def pull_oci_image(image: str, tag: str = "latest", storage: str = DEFAULT_STORA
     Returns:
         Dict with success status and template path
     """
+    storage = storage or _template_storage()
     result = {
         "success": False,
         "message": "",

AppImage/scripts/tests/test_secure_gateway_template_storage.py

@@ -0,0 +1,35 @@
+import sys
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+
+SCRIPTS_DIR = Path(__file__).resolve().parents[1]
+if str(SCRIPTS_DIR) not in sys.path:
+    sys.path.insert(0, str(SCRIPTS_DIR))
+
+import oci_manager  # noqa: E402
+
+HEADER = "Name Type Status Total Used Available %\n"
+
+
+class TemplateStorage(unittest.TestCase):
+    """The Alpine template goes to a storage Proxmox can use."""
+
+    def storage(self, listing, rc=0):
+        with patch.object(oci_manager, "_run_pve_cmd", return_value=(rc, HEADER + listing, "")):
+            return oci_manager._template_storage()
+
+    def test_local_is_used_while_it_is_active(self):
+        self.assertEqual(self.storage("local dir active 1 1 1 1%\nnas nfs active 1 1 1 1%\n"), "local")
+
+    def test_another_storage_is_used_when_local_is_disabled(self):
+        # On a BTRFS installation `local` is disabled and not listed.
+        self.assertEqual(self.storage("local-btrfs btrfs active 1 1 1 1%\n"), "local-btrfs")
+        self.assertEqual(self.storage("nas nfs inactive 0 0 0 0%\nlocal-btrfs btrfs active 1 1 1 1%\n"), "local-btrfs")
+
+    def test_an_unreadable_status_keeps_local(self):
+        self.assertEqual(self.storage("", rc=1), "local")
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_lvm_disk_read_policy.py

@@ -125,13 +125,6 @@ class LvmScopeTests(unittest.TestCase):
         self.excluded = set()
         self.assertEqual(self.args(inventory), [])
 
-    def test_the_scan_settles_its_own_reads_on_the_disks_it_read(self):
-        self.excluded = {"sda"}
-        settled = Mock()
-        self.disk_module.settle_own_reads = settled
-        self.args()
-        scope.settle_scan_reads()
-        settled.assert_called_once_with({"nvme0n1", "sdb"})
 
 
 class LvmReaderTests(unittest.TestCase):
@@ -174,9 +167,20 @@ class LvmReaderTests(unittest.TestCase):
         self.assertIn('cp "$SCRIPT_DIR/lvm_device_scope.py" "$APP_DIR/usr/bin/"', (SCRIPTS / "build_appimage.sh").read_text())
 
 
+class DiskReadPolicyTests(unittest.TestCase):
+    """Only the exclusions in Settings keep a disk from being read."""
+
+    def test_a_disk_without_activity_is_still_read_unless_excluded(self):
+        import disk_temperature_history as dth
+        with patch.object(dth, "_excluded_disk_names", return_value={"sdc"}):
+            self.assertEqual(dth.disk_read_policy("sdb"), dth.READ)
+            self.assertEqual(dth.disk_read_policy("sdb"), dth.READ)
+            self.assertEqual(dth.disk_read_policy("sdc"), dth.EXCLUDED)
+
+
 class QuietDiskIdentityTests(unittest.TestCase):
-    """A quiet rotational disk the Monitor knows nothing of yet, as after a
-    restart, is still shown by its model, serial and type."""
+    """A rotational disk is read on schedule; a parked one is not woken and
+    is still shown by its model, serial and type."""
 
     def setUp(self):
         folder = tempfile.TemporaryDirectory()
@@ -187,10 +191,9 @@ class QuietDiskIdentityTests(unittest.TestCase):
                             ("run/udev/data/b8:16", "E:ID_MODEL=WDC_WD40EFRX-68N32N0\nE:ID_SERIAL_SHORT=WD-WCC7K4FV37J0\n")):
             (root / name).parent.mkdir(parents=True, exist_ok=True)
             (root / name).write_text(value)
-        self.policy = "idle"
+        self.policy = "read"
         self.disk_module = types.ModuleType("disk_temperature_history")
         self.disk_module.disk_read_policy = lambda disk: self.policy
-        self.disk_module.settle_own_reads = Mock()
         modules = patch.dict(sys.modules, disk_temperature_history=self.disk_module)
         modules.start()
         self.addCleanup(modules.stop)
@@ -209,21 +212,17 @@ class QuietDiskIdentityTests(unittest.TestCase):
         exec(compile(ast.Module(body=nodes, type_ignores=[]), "flask_server.py", "exec"), namespace)
         self.get = namespace["get_smart_data"]
 
-    def test_a_spinning_disk_is_read_once(self):
+    def test_a_spinning_disk_is_read(self):
         data = self.get("sdb")
-        self.assertEqual((data["model"], data["rotation_rate"], data["health"], data["idle"]),
-                         ("WDC WD40EFRX-68N32N0", 5400, "healthy", True))
-        self.disk_module.settle_own_reads.assert_called_once_with(["sdb"])
-        self.cache["sdb"] = (0, self.cache["sdb"][1])
-        self.get("sdb")
+        self.assertEqual((data["model"], data["rotation_rate"], data["health"], data["temperature"]),
+                         ("WDC WD40EFRX-68N32N0", 5400, "healthy", 31))
         self.read.assert_called_once()
-        self.assertEqual(self.standby.call_count, 1)
 
     def test_a_parked_disk_is_not_woken_and_keeps_its_identity(self):
         self.standby.return_value = True
         data = self.get("sdb")
         self.read.assert_not_called()
-        self.assertEqual((data["model"], data["serial"], data["rotation_rate"], data["idle"]),
+        self.assertEqual((data["model"], data["serial"], data["rotation_rate"], data["standby"]),
                          ("WDC WD40EFRX-68N32N0", "WD-WCC7K4FV37J0", -1, True))
 
     def test_an_excluded_disk_receives_no_command(self):