When I run following command in 3.1.3 root@tortuga:/tmp# /opt/313/sbin/gluster volume set hosdu performance.cache-max-file-size 10MB Set volume successful root@tortuga:/tmp# /opt/313/sbin/gluster volume set hosdu performance.cache-min-file-size 15MB Error, min-file-size greaterthan max-file-size root@tortuga:/tmp# There should be cosmetic changes in the output. The output should be "Error, min-file-size greater than max-file-size". There should be space between 'greater' and 'than'.
PATCH: http://patches.gluster.com/patch/7366 in release-3.1 (Fixed improper output when 'min-file-size' is more than 'max-file-size' in volume set)