PHP 7.0.1 and Opcache File Cache Only

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Cyberdevil

Verified User
Joined
Sep 16, 2007
Messages
40
I am using custombuild 2.0 to compile PHP 7.0.1 with OpCache support.
This works except for one specific configuration which is the following:

Code: 
cat custom/opcache/opcache.ini 
opcache.memory_consumption=32
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=3000
opcache.revalidate_freq=60
opcache.fast_shutdown=0
opcache.enable_cli=1
opcache.file_cache_only=1
opcache.file_cache=/tmp/.opcache/

Compiled PHP 7 with opcache and opcache-file support like this:
Code: 
cat custom/fastcgi/configure.php70
#!/bin/sh
./configure \
...
        --enable-opcache \
        --enable-opcache-file \

Results:
Code: 
tail -n 2 /var/log/httpd/error_log
Wed Jan  6 16:53:01 2016 (846663): Fatal Error opcache.file_cache_only is set without a proper setting of opcache.file_cache
Wed Jan  6 16:53:03 2016 (846686): Fatal Error opcache.file_cache_only is set without a proper setting of opcache.file_cache


If I change opcache.file_cache_only back to opcache.file_cache_only=0, it does not show the error.

PHP info Opcache parts shows:
Code: 
Zend OPcache

Opcode Caching => Up and Running
Optimization => Enabled
SHM Cache => Enabled
File Cache => Enabled
Startup => OK
Shared memory model => mmap
Cache hits => 0
Cache misses => 0
Used memory => 18044896
Free memory => 15509536
Wasted memory => 0
Interned Strings Used memory => 157136
Interned Strings Free memory => 8231472
Cached scripts => 0
Cached keys => 0
Max keys => 3907
OOM restarts => 0
Hash keys restarts => 0
Manual restarts => 0

Directive => Local Value => Master Value
opcache.blacklist_filename => no value => no value
opcache.consistency_checks => 0 => 0
opcache.dups_fix => Off => Off
opcache.enable => On => On
opcache.enable_cli => On => On
opcache.enable_file_override => Off => Off
opcache.error_log => no value => no value
opcache.fast_shutdown => 0 => 0
opcache.file_cache => /tmp/.opcache/ => /tmp/.opcache/
opcache.file_cache_consistency_checks => 0 => 0
opcache.file_cache_only => 1 => 1


In the PHP source code, I see this:

PHP: 
#ifdef HAVE_OPCACHE_FILE_CACHE
	} else if (!ZCG(accel_directives).file_cache) {
		accel_startup_ok = 0;
		zend_accel_error(ACCEL_LOG_FATAL, "opcache.file_cache_only is set without a proper setting of opcache.file_cache");
		return SUCCESS;
	}

So for some reason, this setting is set correctly according to phpinfo but not according to the log output.

Could someone try to replicate?
 
Changing opcache.file_cache=/tmp/.opcache/ to opcache.file_cache=/home/admin/public_html/.opcache actually solved the issue.
Which is strange as rights on /tmp/.opcache are 777 and changed to owner to admin:admin which also didn't solve it.

open_basedir /home/admin/:/tmp:/var/tmp:/usr/local/lib/php/:/usr/local/php70/lib/php/
 
I did it the normal way. Only had to change the configure file so it will compile it with opcache enabled.

Code: 
cat custom/fastcgi/configure.php70
#!/bin/sh
./configure \
...
        --enable-opcache \
        --enable-opcache-file \
 
When I add opcache.file_cache=/home/admin/tmp/.opcache to opcache.ini, it only works for the webapps user. Only the webapps user get files added to /home/admin/tmp/.opcache - still trying to figure this out so it can work for all users. Please share if you know the solution.
 
Solved the problem by setting a per-user custom path /home/USER/.opcache
 
Last edited:
rahg0zar said:
How?
in htaccess file ?
Click to expand...

To get file cache for users I created /usr/local/directadmin/data/templates/custom/php-fpm.conf and added this line:

Code: 
php_admin_value[opcache.file_cache] = |HOME|/.opcache

To get file cache for webapps I created this file: /usr/local/directadmin/custombuild/custom/opcache/opcache.ini and added this line:

Code: 
opcache.file_cache=/var/www/tmp/.opcache

You also need to create the directory .opcache at /var/www/tmp/.opcache and create the directory /home/USER/.opcache for every user on your server (this can be automated on new user creation by adding code to /usr/local/directadmin/scripts/custom/user_create_post.sh)

Please note this is NOT a how to. You need to adjust your opcache.ini settings with many changes, and also everytime there is a new PHP version, you need to delete all the old opcache files in every users directory. Again, this is not a how to, a lot more adjustment should be made. You need to study that your self if you are going to use opcache with file cache in addition to regular cache in RAM.
 
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