use the new home storage backend when no existing local storage backend exists for the user's home

lib/private/files/cache/storage.php

@@ -48,7 +48,7 @@ class Storage {
 	}
 
 	public static function getStorageId($numericId) {
-		
+
 		$sql = 'SELECT `id` FROM `*PREFIX*storages` WHERE `numeric_id` = ?';
 		$result = \OC_DB::executeAudited($sql, array($numericId));
 		if ($row = $result->fetchRow()) {
@@ -57,4 +57,17 @@ class Storage {
 			return null;
 		}
 	}
+
+	public static function exists($storageId) {
+		if (strlen($storageId) > 64) {
+			$storageId = md5($storageId);
+		}
+		$sql = 'SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?';
+		$result = \OC_DB::executeAudited($sql, array($storageId));
+		if ($row = $result->fetchRow()) {
+			return true;
+		} else {
+			return false;
+		}
+	}
 }

lib/private/files/filesystem.php

@@ -305,7 +305,13 @@ class Filesystem {
 		$parser = new \OC\ArrayParser();
 
 		$root = \OC_User::getHome($user);
-		self::mount('\OC\Files\Storage\Local', array('datadir' => $root), $user);
+
+		if (\OC\Files\Cache\Storage::exists('local::' . $root . '/')) {
+			self::mount('\OC\Files\Storage\Local', array('datadir' => $root), $user);
+		} else {
+			$userObject = \OC_User::getManager()->get($user);
+			self::mount('\OC\Files\Storage\Home', array('user' => $userObject), $user);
+		}
 		$datadir = \OC_Config::getValue("datadirectory", \OC::$SERVERROOT . "/data");
 
 		//move config file to it's new position