#43114 [NEW]: multiple servers outputting error_log onto shared NFS file include garbage byte

From: tom at razz dot com Operating system: Fedora 7 PHP version: 5.2.4 PHP Bug Type: *General Issues Bug description: multiple servers outputting error_log onto shared NFS file include garbage byte Description: ------------ i'm attempting to log php errors from multiple web servers (3) to a single nfs-mounted file: error_reporting = E_ALL & ~E_NOTICE & ~E_STRICT display_errors = Off log_errors = On error_log = /mnt/logs/php/webprod-php-error.log lines are written in production to this file perhaps 1-3 every minute via error_log facility. there aren't logging collisions at the moment. nfs server is a netapp fas3020c. fstab line is: nyp-netapp-2:/vol/logs /mnt/logs nfs rw,bg,soft,rsize=32768,wsize=32768,vers=3 0 0 Thanks for the help! Reproduce code: --------------- <?php // run concurrently from multiple servers to see garbage appear while(1) { sleep(rand(1,5)); error_log("test error"); } Expected result: ---------------- an error log without garbage ^@ entries in between lines. interestingly, writing my own error_log which explicitly does: $lfp=fopen("/mnt/logs/logfile.txt","a"); fwrite($lfp,$log_message); fclose($lfp); does not result in the garbage data being inserted. Actual result: -------------- log contents look similar to this: [26-Oct-2007 23:57:20] /usr/local/www/web/common/php- include/facebook/class.Movi eLines.php : Using cached values ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@[26-Oct-2007 23:57:44] /usr/ local/www/web/common/php-include/facebook/class.Movies.php : Using cached values [26-Oct-2007 23:57:44] /usr/local/www/web/common/php- include/facebook/class.Movi eLines.php : Using cached values -- Edit bug report at http://bugs.php.net/?id=43114&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43114&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43114&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43114&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43114&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=43114&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=43114&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=43114&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=43114&r=needscript Try newer version: http://bugs.php.net/fix.php?id=43114&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=43114&r=support Expected behavior: http://bugs.php.net/fix.php?id=43114&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=43114&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=43114&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=43114&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43114&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=43114&r=dst IIS Stability: http://bugs.php.net/fix.php?id=43114&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=43114&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=43114&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=43114&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=43114&r=mysqlcfg