httpd-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Boyle Owen" <>
Subject RE: [users@httpd] Problem with apache, mysql on redhat 7.3
Date Mon, 17 Feb 2003 08:38:31 GMT
>-----Original Message-----
>From: Peter Goggin []
>I do not know if this is the correct list for this problem.
>Until yesterday my system was working without problem. Today I 
>could not
>access my web sites and found that apache was down. I could not restart
>apache. The error message was:
>Ouch! ap_mm_create(1048576, "/var/run/") failed
>Error: MM: mm:core: failed to open semaphore file (No space 
>left on device):

I guess you have mod_ssl installed? mod_ssl uses shared memory so that
different daemons can have access to the same session information. To
ensure that two processes can't modify the same data, they use
semaphores to set a lock. Databases also use semaphores for the same
reason. The number of available semaphores is a kernel variable and, in
your case, this is being exceeded. On Solaris this is defined in
/etc/system. I don't know about Red Hat but this link (from google
"semaphore" "red hat") might help:

The problem is nothing to do with disk space.

Owen Boyle

>OS: No such file or directory
>/usr/sbin/apachectl start: httpd could not be started
>I rebooted the system., resrted mysql and then apache. Got the 
>same error
>message. I then stopped mysql and started apache. This time no 
>problem. I
>then restarted mysql and got the following error:
>touch : creating `/var/lock/subsys/mysql': No space left on device
>Starting mysqld-max daemon with databases from /var/lib/mysql 030217
>15:35:38  mysqld ended
>Thuis currently I can have either mysql or apache but not both.
>According to the df command none of my file systems are full. 
>Can anyone
>help me?
>Peter Goggin
>The official User-To-User support forum of the Apache HTTP 
>Server Project.
>See <URL:> for more info.
>To unsubscribe, e-mail:
>   "   from the digest:
>For additional commands, e-mail:

This message is for the named person's use only. It may contain
confidential, proprietary or legally privileged information. No
confidentiality or privilege is waived or lost by any mistransmission.
If you receive this message in error, please notify the sender urgently
and then immediately delete the message and any copies of it from your
system. Please also immediately destroy any hardcopies of the message.
You must not, directly or indirectly, use, disclose, distribute, print,
or copy any part of this message if you are not the intended recipient.
The sender's company reserves the right to monitor all e-mail
communications through their networks. Any views expressed in this
message are those of the individual sender, except where the message
states otherwise and the sender is authorised to state them to be the
views of the sender's company. 

The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:> for more info.
To unsubscribe, e-mail:
   "   from the digest:
For additional commands, e-mail:

View raw message