tail: cannot watch `/var/log/httpd/access_log': No space left on device

Yesterday  suddenly I checked my apache log using following command 

[root@localhost ~]# tailf /var/log/httpd/access_log

but above command was showing error. It is like below

tail: cannot watch `/var/log/httpd/access_log': No space left on device

 After i searched google and found solution.

Solution: 

             I need to increase inotify value. I checked my default inotify value in below path
" /proc/sys/fs/inotify/max_user_watches " after that i changed that value 8192 to 16384.
This above value depends upon your needs.

         [root@localhost ~]# cat /proc/sys/fs/inotify/max_user_watches 
         8192

         [root@localhost ~]# echo 16384 > /proc/sys/fs/inotify/max_user_watches
 
Issue resolved....