Space validation is being perfomed on the source domain during live storage migration. The operation got blocked on CDA.
Verified using rhev 3.5.0-1 vt13.9
RHEL7.1 host vdsm-4.16.8.1-6.el7ev.x86_64
rhevm-3.5.0-0.31.el6ev.noarch
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-0230.html