strange apache error

apache failed to start with an error:

[Thu May 27 13:41:29 2010] [crit] (28)No space left on device: mod_rewrite: could not create rewrite_log_lock
Configuration Failed

Carlos Rivero has a solution using perl.

Here is what I used, as somebody suggested in the comments to the post linked above:

ipcs -s | grep emilper | awk ' { print $2 } ' | xargs ipcrm sem

then restarted the server