"Warning: Unknown(): Failed to write session data (files)"

[majoosh]

Hi guys,

Am getting the following error in our server:

========================================
Warning: session_register(): open(/tmp/sess_65cd921b8ba993f3c437e02daa315e68, O_RDWR) failed: No such file or directory (2) in /home/bla/public_html/admin/index.php on line 1

Warning: session_register(): Cannot send session cookie - headers already sent by (output started at /home/bla/public_html/admin/index.php:1) in /home/bla/public_html/admin/index.php on line 1

Warning: session_register(): Cannot send session cache limiter - headers already sent (output started at /home/bla/public_html/admin/index.php:1) in /home/bla/public_html/admin/index.php on line 1
Warning: Unknown(): open(/tmp/sess_65cd921b8ba993f3c437e02daa315e68, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0
=====================================


Also I have seen so many thread opened in forum regarding the same issue without any resolution


It's not any problem with /tmp permission. Here are the permission and df -h results for my server
===========
root [/tmp]# df -h
/usr/tmpDSK 484M 14M 445M 3% /tmp
/tmp 484M 14M 445M 3% /var/tmp
=========
==========
root[/tmp]# mount
/dev/hda3 on / type ext3 (rw)
none on /proc type proc (rw)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
/dev/hda1 on /boot type ext3 (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/hde2 on /home type ext3 (rw,usrquota)
none on /dev/shm type tmpfs (rw,noexec,nosuid)
/usr/tmpDSK on /tmp type ext3 (rw,noexec,nosuid,loop=/dev/loop0)
/tmp on /var/tmp type none (rw,noexec,nosuid,bind)
=============

============
root[/tmp]# php -v
PHP 4.4.2 (cgi) (built: Jun 10 2006 04:53:36)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies
with Zend Extension Manager v1.0.6, Copyright (c) 2003-2004, by Zend Technologies
============

I have checked all possibilities mount, /tmp permission , php.ini ....but no clue

session.save_path is /tmp in php.ini

Am using old version of easyapache...and not using phpsuexec

I have tried wiping the session files and the issue is fixed temperaroly but everytime I have to do this when customer reports this and that's going to be a real pain

As per instruction from a cpanel guy I have set "session.bug_compat_42 = Off" (without the quotes) in php.ini file and restart apache and didn't do any trick

This started recently ..... Any idea if cpanel did any updates recently ???


Thanks
Mojo

[serversphere]

Originally Posted by majoosh

Warning: session_register(): Cannot send session cookie - headers already sent by (output started at /home/bla/public_html/admin/index.php:1) in /home/bla/public_html/admin/index.php on line 1

Mojo, is your /tmp directory simply getting overrun with SESS files? If so, try this:

make a file in scripts called cleantmp, put the following in it:

# This script cleans out /tmp of empty, root, cpanel
# and nobody session files in /tmp
# rev 2.0b by Darren - 8.19.07

# if --test is passed, we just show the results
if [ "$1" == "--test" ]
then
        CMD="-exec ls -la"
        echo "$0: test mode"
else
        CMD="-exec rm -rf"
fi

if [ "$1" == "--help" ]
then
        echo ""
        echo "cleantmp will clean out your tmp directory for you"
        echo ""
        echo "Parameters:"
        echo "--test            to run in test mode"
        echo "--help            display this file"
        echo "-a accountname    to remove all files owned by account name"
        echo "-e                cleans out all empty (zero length) files"
        echo ""
        exit 0
fi

if [ "$1" == "-a" ]
then
        echo ""
        echo "Removing session file for account $2"
        find /tmp -name "sess*" -user $2 -maxdepth 1 $CMD {} \;
        echo "completed"
        echo ""
        exit 0
fi

if [ "$1" == "-e" ]
then
        echo ""
        echo "Cleaning out empty files from /tmp"
        find /tmp -name "sess*" -empty -maxdepth 1 $CMD {}  \;
        echo "completed"
        echo ""
        exit 0
fi


# remove empty session files that are over 2 hours old
find /tmp -name "sess*" -empty -mmin +120 -maxdepth 1 $CMD {}  \;

# remove root owned session files
find /tmp -name "sess*" -user root -maxdepth 1 $CMD {} \;

# remove nobody session files
find /tmp -name "*sess*" -user nobody -maxdepth 1 $CMD {} \;

# remove cpanel owned session files
find /tmp -name "sess*" -user cpanel -maxdepth 1 $CMD {} \;

# remove any session file over 5 hours old
find /tmp -name "sess*" -mmin +300 -maxdepth 1 $CMD {} \;

# remove any spamassassin file over 4 hours old
find /tmp -name ".spamassassin*" -mmin +240 -maxdepth 1 $CMD {} \;

Now save, and chmod it so it can be run (use your discretion for perm level):
chmod 755 /scripts/cleantmp

Run it as /scripts/cleantmp --test to view which files will be removed or /scripts/cleantmp -a accountname to remove all files owned by account name. And running it with "-e" will remove all empty session files.

What we do on most boxes is have it run in cron.hourly so that it purges session files. It cleans empties that are over 2 hours old, and normal ones that are over 5 hours old. Keep in mind, this may break software that uses "Keep Me Logged In Indefinitely" option for users. But the script could be easily modified to skip some session files if needed.

So, go to /etc/cron.hourly and create a file called cleantmp. Put this into it:

#!/bin/bash

/scripts/cleantmp -e >/dev/null 2>&1
/scripts/cleantmp >/dev/null 2>&1

and save it, then do the same permissions procedure as above. Now every hour, the script wil clean out empty and older SESS files and keep your sites up. Modify this and the other script as needed.

Hope this helps!

[majoosh]

Hi serversphere,

You RoCk!!!! but a server reboot fixed the problem


Thanks
Mojo

[majoosh]

The error poped up again . server reboot is not good solution ...


What's causing this error ? any idea ?


Mojo

[majoosh]

session.gc_maxlifetime=1440 that will do the trick

Thanks
Mojo

[majoosh]

Still having problem ... and I see the error kernel: EXT3-fs error (device loop(7,0)): ext3_readdir: bad entry in directory in /var/log/messeges


Any idea ?

Majoosh

[nerbonne]

Are you using temporary urls to access the sites? The only time I have session problems is when I use the temp urls. The first site is ok, but the second site I try to go to on the same server causes a problem. This will only occur on a CGI server. The reason is that your session is owned by user one, so user two can't write to it.

Understand?

[majoosh]

But why the error error kernel: EXT3-fs error (device loop(7,0)): ext3_readdir: bad entry in directory ?



Majoosh

[majoosh]

I rebuild /tmp and that fixed all the problem


Majoosh

[donneo2000]

Mojo.. thanx for posting the solution

[donneo2000]

rebuilding /tmp will not fix the issue always. You may need to do the following as a permanent fix:

touch /var/cpanel/usecpphp