From c3693d00db13e32840dfa9906fcf6ebe4a8ceaea Mon Sep 17 00:00:00 2001
From: Lizandro Guarnizo <77708265+lizandrogd@users.noreply.github.com>
Date: Thu, 25 Jun 2026 10:05:58 -0500
Subject: [PATCH] fix: mostrar todos los discos con espacio real incluyendo
 overlay y tmpfs grandes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 agent/main.go | 61 ++++++++++++++++++++++++++-------------------------
 1 file changed, 31 insertions(+), 30 deletions(-)

diff --git a/agent/main.go b/agent/main.go
index a3d9f1b..c4309c7 100644
--- a/agent/main.go
+++ b/agent/main.go
@@ -174,46 +174,47 @@ func collectMetrics() (*Metricas, error) {
 		m.CPU.Porcentaje = round2(pcts[0])
 	}
 
-	// Discos
-	if parts, err := disk.Partitions(false); err == nil {
+	// Discos — incluir todo filesystem con espacio real (>100 MB), sin duplicar mountpoints
+	{
 		gb := 1024.0 * 1024 * 1024
 		skipFS := map[string]bool{
-			"proc": true, "sysfs": true, "tmpfs": true, "devtmpfs": true,
-			"devpts": true, "cgroup": true, "cgroup2": true, "overlay": true,
-			"hugetlbfs": true, "mqueue": true, "pstore": true, "securityfs": true,
-			"debugfs": true, "tracefs": true, "autofs": true, "fusectl": true,
-			"configfs": true, "efivarfs": true, "bpf": true, "rpc_pipefs": true,
-			"squashfs": true, "ramfs": true, "nsfs": true, "none": true,
+			"proc": true, "sysfs": true, "devtmpfs": true, "devpts": true,
+			"cgroup": true, "cgroup2": true, "hugetlbfs": true, "mqueue": true,
+			"pstore": true, "securityfs": true, "debugfs": true, "tracefs": true,
+			"autofs": true, "fusectl": true, "configfs": true, "efivarfs": true,
+			"bpf": true, "rpc_pipefs": true, "nsfs": true, "ramfs": true,
+		}
+		seen := map[string]bool{}
+		parts, _ := disk.Partitions(true)
+		// Asegurar que siempre se incluye la raíz
+		type partEntry struct{ mountpoint, fstype string }
+		entries := []partEntry{{"/", ""}}
+		if runtime.GOOS == "windows" {
+			entries = []partEntry{{"C:\\", ""}}
 		}
 		for _, p := range parts {
-			if skipFS[p.Fstype] {
+			entries = append(entries, partEntry{p.Mountpoint, p.Fstype})
+		}
+		for _, e := range entries {
+			if seen[e.mountpoint] || skipFS[e.fstype] {
 				continue
 			}
-			if d, err := disk.Usage(p.Mountpoint); err == nil {
-				m.Discos = append(m.Discos, DiscoInfo{
-					TotalGB:    round2(float64(d.Total) / gb),
-					UsadoGB:    round2(float64(d.Used) / gb),
-					LibreGB:    round2(float64(d.Free) / gb),
-					Porcentaje: round2(d.UsedPercent),
-					Ruta:       p.Mountpoint,
-				})
+			d, err := disk.Usage(e.mountpoint)
+			if err != nil || d.Total == 0 {
+				continue
 			}
-		}
-	}
-	if len(m.Discos) == 0 {
-		root := "/"
-		if runtime.GOOS == "windows" {
-			root = "C:\\"
-		}
-		if d, err := disk.Usage(root); err == nil {
-			gb := 1024.0 * 1024 * 1024
-			m.Discos = []DiscoInfo{{
-				TotalGB:    round2(float64(d.Total) / gb),
+			totalGB := float64(d.Total) / gb
+			if totalGB < 0.1 { // ignorar < 100 MB (tmpfs pequeños, etc.)
+				continue
+			}
+			seen[e.mountpoint] = true
+			m.Discos = append(m.Discos, DiscoInfo{
+				TotalGB:    round2(totalGB),
 				UsadoGB:    round2(float64(d.Used) / gb),
 				LibreGB:    round2(float64(d.Free) / gb),
 				Porcentaje: round2(d.UsedPercent),
-				Ruta:       root,
-			}}
+				Ruta:       e.mountpoint,
+			})
 		}
 	}