[Openstack] Error While Launching Instance at nova node

Hello every One... I am facing problem while launchig error in nova.conf file EXT4-fs (nbd3)L:VFS : cant fine ext4 filesystem Invalid Media value.. Even though my file system is ext4... Help me i am stuck here since three week.. I tried tiwse setup for ext4 file format -- *-Regards* *Prof.

[Openstack] Error While Launching Instance - Could not open backing file. Could not read image for determining its format ; Invalid Argument

Hi, I am trying to launch instance on 2 node Openstack system. Controller and compute both nodes are on Ubuntu Server 14.04 / intel i5 processor while booting instance through command prompt as well as from dashboard, I am getting following error in nova-compute.log *qemuMonitorOpenUnix : 306 : f