Bug #69136 [NEW]: Session file empty when session-path on NFS mount

From: maggus dot staab at googlemail dot com Operating system: Ubuntu 14 LTS PHP version: 5.6.6 Package: Session related Bug Type: Bug Bug description:Session file empty when session-path on NFS mount Description: ------------ php -v PHP 5.6.5-1+deb.sury.org~trusty+1 Test script: --------------- <?php $path = '/path/to/a/dir/mounted/via/nfs/'; if (!is_dir($path) || !is_writable($path) || !is_readable($path)) { throw new Exception("$path is not a proper dir"); } //ini_set("session.save_path", $path); // neither this works session_save_path($path); // nor this does session_start(); $_SESSION['cnt'] = $_SESSION['cnt']+1; var_dump($_SESSION['cnt']); if ($_SESSION['cnt'] > 1) { echo "<h1>WORKS</h1>"; session_destroy(); } exit(); Expected result: ---------------- on each 2nd request "WORKS" is printed. Actual result: -------------- session is not persisted. session file gets created but does not contain any content. therefore subsequent calls will never echo "WORKS" because session cannot be continued. with default Ubuntu php.ini a error/warning doesnt show up at all. After adding ini_set("display_errors", "On"); error_reporting(E_ALL); I get a warning "Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/XX..ZZ..YY/tmp/www/session/) in Unknown on line 0" -- Edit bug report at https://bugs.php.net/bug.php?id=69136&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69136&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69136&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69136&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69136&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69136&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69136&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69136&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69136&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69136&r=support Expected behavior: https://bugs.php.net/fix.php?id=69136&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69136&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69136&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69136&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69136&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69136&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69136&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69136&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69136&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69136&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69136&r=mysqlcfg