Hmm.. somehow i am getting this now. Haven't changed any config of xen, and i am in /root, so why it should show that message.
xm list
Error: (9, 'Bad file descriptor')
Usage: xm list [options] [Domain, ...]
List information about all/some domains.
-l, --long Output all VM details in SXP
--label Include security labels
--state=<state> Select only VMs with the specified state
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regards,
Anand Gupta