On 5.11.1.1, we no longer have attribute linked_clone set to True. Hence verified. Used PSQL Commands :
==>Check the total number of VMs present
# psql -U postgres -d vmdb_production -c "select name from vms where vendor='vmware';" | wc -l
==>Now, check the total number of VMs having linked_clone set as True:
# psql -U postgres -d vmdb_production -c "select name from vms where vendor='vmware' and linked_clone='t';" | wc -l
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://access.redhat.com/errata/RHSA-2019:4201