[Wed Jan 08 18:50:07 2014] [emerg] (28)No space left on device: Couldn't create accept lock (/etc/httpd/logs/accept.lock.15449) (5)

This may happen when trying to restart Apache and you find it dies right after starting and check /var/log/httpd/error_logs.

What is the cause of this?

1. You could be out of disk space (if you're not then see #2 and below)
2. You're out of Semaphores, you need to kill all the old ones.

Check to see current Semaphores, if Apache has stopped it should have none.  If you run the command below and see them you need to manually kill them.

ipcs -s
------ Semaphore Arrays --------
key        semid      owner      perms      nsems    
0x00000000 0          apache    600        1        
0x00000000 229377     apache    600        1        
0x00000000 262146     apache    600        1        
0x00000000 294915     apache    600        1        
0x00000000 327684     apache    600        1        
0x00000000 360453     apache    600        1        
0x00000000 1671174    apache    600        1        
0x00000000 1900551    apache    600        1        
0x00000000 8781832    apache    600        1        
0x00000000 8814601    apache    600        1        
0x00000000 8847370    apache    600        1        
0x00000000 8880139    apache    600        1        
0x00000000 8912908    apache    600        1        
0x00000000 8945677    apache    600        1        
0x00000000 8978446    apache    600        1        
0x00000000 13205519   apache    600        1        
0x00000000 13238288   apache    600        1        
0x00000000 13271057   apache    600        1        
0x00000000 13303826   apache    600        1        
0x00000000 13336595   apache    600        1        
 

The bash script below will kill all the old semaphores and you should be able to start Apache succesfully after that.

for ipcs in `ipcs -s|awk '{print $2}'`;
do
echo "ipcs=$ipcs"
ipcrm -s $ipcs
done
 

emerg, couldn, etc, httpd, logs, wed, restart, apache, var, error_logs, disk, semaphores, manually, ipcs, semaphore, arrays, semid, perms, nsems, bash, succesfully, awk, echo, quot, ipcrm,

Latest Articles