From 7762d471db115345914de0ca84ca6d33d9a23607 Mon Sep 17 00:00:00 2001
From: ska <ska@noreply.git.skarockoi.de>
Date: Mon, 22 Dec 2025 16:05:18 +0000
Subject: [PATCH] Update configuration.nix

---
 configuration.nix | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/configuration.nix b/configuration.nix
index 1727523..c4dc575 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -230,15 +230,21 @@
         ROOT_SRC="$($FINDMNT -n -o SOURCE / || true)"
         [ -z "$ROOT_SRC" ] && exit 0
 
-        DEV="$ROOT_SRC"
-        while PARENT="$($LSBLK -no PKNAME "$DEV" 2>/dev/null)"; [ -n "$PARENT" ]; do
-          DEV="/dev/$PARENT"
-        done
+        # Resolve to top-level disk exactly once
+        PARENT="$($LSBLK -ndo PKNAME "$ROOT_SRC" 2>/dev/null || true)"
+        if [ -n "$PARENT" ]; then
+          ROOT_DEV="/dev/$PARENT"
+        else
+          ROOT_DEV="$ROOT_SRC"
+        fi
 
-        DEV_NAME="$($BASENAME "$DEV")"
+        DEV_NAME="$($BASENAME "$ROOT_DEV")"
+
+        # Sanity check: ensure device exists before watching
+        [ ! -e "/sys/class/block/$DEV_NAME" ] && exit 0
 
         while [ -e "/sys/class/block/$DEV_NAME" ]; do
-          $SLEEP 0.5
+          $SLEEP 1
         done
 
         $SYSTEMCTL poweroff