LinuxQuestions.org - grouplist groupinstall are not working on Centos 6 with DVD dump as repo

Hello experts,

I have centos 6.8 system & it's yum configured with local DVD dump. I'm able to install packages using yum (for e.g., "yum install nmap" is perfectly working) but "yum grouplist" (or yum groupinstall ) is not working. Initially it was giving error "no group data available for configured repositories" but after I ran "createrepo -g repodata/repmod.xml ." it stopped giving error but it still does not list the "installed groups" & "available groups".

Code:

# yum grouplist

Loaded pluginsL fastestmirror, security

Setting up Group Process

Loading mirror speeds from cached hostfile

Done

#

Please advise, many thanks in advance!