Squid 3.1.10 CentOS : cache_swap_log (13) Permission Denied

[Christophe Marchand <cmarchand@xxxxxxxxxx>]

Hi,

I have the following problem : when I do not declare a cache dir, my 
squid starts correctly and runs perfectly. When I uncomment the 
cache_dir line, it fails with this message :
    2012/12/18 11:31:18| /var/cache/squid/.00: (13) Permission denied
    FATAL: commonUfsDirOpenSwapLog: Failed to open swap log.

My squid.conf is :
    cache_dir aufs /drive/squid_cache/ 344064 64 64
    coredump_dir /var/spool/squid
    access_log none
    cache_store_log none
    cache_swap_log /var/cache/squid/

ls -al /var/cache returns this :
    drwxrw-r--.  2 squid     squid     4096 18 déc.  10:56 squid

ps -ef | grep squid does not show a squid running


I've read all threads on this, but found no solution.

Any help will be much appreciated.

Thanks in advance,
Christophe