为了方便文件管理，修改了data的默认路径到其他盘，但是打开网页提示：
Data directory (%s) is readable by other users,Please change the permissions to 0770 so that the directory cannot be listed by other users.
可以通过修改源码，禁用权限检查。
vim /var/www/nextcloud/lib/private/legacy/util.php
找到方法checkDataDirectoryPermissions
修改为：
public static function checkDataDirectoryPermissions($dataDirectory) {
$l = \OC::$server->getL10N('lib');
$errors = array();
$permissionsModHint = $l->t('Please change the permissions to 0770 so that the directory'
. ' cannot be listed by other users.');
$perms = substr(decoct(@fileperms($dataDirectory)), -3);
if (substr($perms, -1) != '0') {
chmod($dataDirectory, 0770);
clearstatcache();
$perms = substr(decoct(@fileperms($dataDirectory)), -3);
if (substr($perms, 2, 1) != '0') {
$errors[] = array(
'error' => $l->t('Data directory (%s) is readable by other users', array($dataDirectory)),
'hint' => $permissionsModHint
);
}
}
return $errors;
}
