From c94c08387f9c7f25983af9f3f5c03f58aa7f566b Mon Sep 17 00:00:00 2001
From: Robin Kluth <kontakt@kluthr.de>
Date: Fri, 21 Apr 2023 10:38:50 +0200
Subject: [PATCH] Ignore nested volumes - only backup parent then

---
 src/include/ABHelper.php | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/include/ABHelper.php b/src/include/ABHelper.php
index 5d41a68..026aace 100644
--- a/src/include/ABHelper.php
+++ b/src/include/ABHelper.php
@@ -430,6 +430,23 @@ public static function getContainerVolumes($container) {
             }
             $volumes[] = rtrim($hostPath, '/');
         }
+
+        usort($volumes, function ($a, $b) {
+            return strlen($a) <=> strlen($b);
+        });
+        self::backupLog("usorted volumes: " . print_r($volumes, true), self::LOGLEVEL_DEBUG);
+
+        /**
+         * Check volumes against nesting
+         */
+        foreach ($volumes as $volume) {
+            foreach ($volumes as $key2 => $volume2) {
+                if (str_starts_with($volume2, $volume) && $volume !== $volume2) {
+                    self::backupLog("'$volume2' is within mapped volume '$volume'! Ignoring!", self::LOGLEVEL_WARN);
+                    unset($volumes[$key2]);
+                }
+            }
+        }
         return $volumes;
     }