Thanks Kashyap for replying.
QEMU has permissions to the directory which is having images. I will look into the AppArmor issue and find out more about this.
By checking more on the AppArmor and sVirt issue , i have modified the qemu.conf for security_driver="none". The result for this is no permission error but another error which can be related to QEMU 2.3.0
virsh # blockcommit vm-01 vda --verbose --pivot --active
Block Commit: [100 %]error: failed to pivot job for disk vda
error: internal error: unable to execute QEMU command 'block-job-complete': The active block job for device 'drive-virtio-disk0' cannot be completed
Searched more for this type of error and found -
Looks like bug in QEMU 2.3.0 . Checking now with QEMU 2.1 for the same.
Let me know if anything to more look for.