Apache22 mod_qos

[mlotek]

Hi,

I have default instalation of Apache and mod_qos. I uncommented only

LoadModule qos_module         libexec/apache22/mod_qos.so

Apache starts with no problem but when I add to httpd.conf:

<IfModule mod_qos.c>
QS_ClientEventBlockCount 20 300
</IfModule>

I got this error in httpd-error.log:

[Sun Mar 02 10:18:46 2014] [emerg] mod_qos(004): failed to create mutex (client control)(/var/tmp/L280029342_ccl.mod_qos): File exists

if anyone can help I will be grateful.

Thanks in advance and sorry for my English.

 

[ShelLuser]

I'd check /var/tmp to see if there's a file called L280029342_ccl.mod_qos in there and if so then delete it. That seems to be the cause of your problem, according to the error message anyway.

 

[mlotek]

Unfortunately this file does not exist.

 

[Ome Ko]

Having the exact same issue with this non-existent file. Only ClientEventBlockCount complains about this issue as far as I've seen so far. This /tmp/*.mod_qos file is not anywhere on the filesystem, but httpd refuses to start.
I'm not on ports for apache and this module.

Apache 2.4.58:
./configure --prefix=/usr/local/apache --enable-rewrite --enable-so --with-expat=builtin --with-ssl=/usr/local/lib
mod_qos 11.75:
/usr/local/apache/bin/apxs -i -c mod_qos.c -lcrypto -lpcre2-8 -L/usr/local/lib/

Here's my module config:

LoadModule deflate_module modules/mod_deflate.so
LoadModule unique_id_module modules/mod_unique_id.so
LoadModule qos_module modules/mod_qos.so
LoadModule php_module modules/libphp.so
LoadModule unixd_module modules/mod_unixd.so
LoadModule alias_module modules/mod_alias.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule userdir_module modules/mod_userdir.so
LoadModule mime_module modules/mod_mime.so
LoadModule auth_basic_module modules/mod_auth_basic.so
#LoadModule authz_host_module modules/mod_authz_host.so
LoadModule authz_core_module modules/mod_authz_core.so
LoadModule dir_module modules/mod_dir.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule authn_file_module modules/mod_authn_file.so
LoadModule authn_core_module modules/mod_authn_core.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule socache_shmcb_module modules/mod_socache_shmcb.so
LoadModule ssl_module modules/mod_ssl.so
Include conf/extra/httpd-ssl.conf
LoadModule cgid_module modules/mod_cgid.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule access_compat_module modules/mod_access_compat.so
LoadModule reqtimeout_module modules/mod_reqtimeout.so
LoadModule filter_module modules/mod_filter.so
LoadModule env_module modules/mod_env.so
LoadModule headers_module modules/mod_headers.so
LoadModule version_module modules/mod_version.so
LoadModule status_module modules/mod_status.so

Anybody any clues?

 

[vsatmydynipnet]

Just found this one after 3 days searching to get mod_qos running.

As soon as I activate:

QS_ClientEventBlockCount 5 300

Server fails to start with:

[Wed Aug 12 15:49:58.179695 2026] [qos:emerg] [pid 97086:tid 62047079800848] mod_qos(004): failed to create mutex (client control)(/tmp/N26519498_ccl.mod_qos): File exists

Running on:

15.1-RELEASE-p1 FreeBSD 15.1-RELEASE-p1 #0 -dirty: Tue Jun 30 03:16:39 UTC 2026
ap24-mod_qos-11.78 QoS for Apache
apache24-2.4.68 Version 2.4.x of Apache web server

Has somebody found a workaround for it?

I will be forced to move the server to Linux, which is not what I want. But there it works.

Any hints would be greatly appreciated.

An no, the file does not exist.