Seeing the same issue in latest OSP 16 as well.
Sai - which OSP-16 compose are you running? its possible that this fix isn't in your compose but it should be in recent ones.
Sai - just noticed that you said you're using the latest osp-16, so can we get the output of the introspection data for a node that you're seeing this problem on, and also any ramdisk logs? It may be that the fix is in the overcloud image but not in the ramdisk.
Bob, the compose I'm actually using is RHOS_TRUNK-16.0-RHEL-8-20191007.n.0 which was latest apssed_phase at the point I deployed.
Bob, In the introspection data I have eno1 ens2f0 ens2f1 ens2f2 ems2f3 but on the deployed overcloud node I see eth0 eth2 eth3 eth4 eth5 with links. Here is the introspection data: http://rdu-storage01.scalelab.redhat.com/sai/introspection.txt
In /etc/default/grub GRUB_CMDLINE_LINUX="console=ttyS0 console=ttyS0,115200n81 no_timer_check net.ifnames=0 crashkernel=auto rhgb quiet"
Thanks Sai. It looks like the 10/7 compose is using openstack-tripleo-image-elements-10.5.2-0.20190928034215.c94f6b7.el8ost.noarch.rpm, here - https://brewweb.engineering.redhat.com/brew/buildinfo?buildID=977015. That pkg was built on 9/28 while fix https://review.opendev.org/#/c/679169 merged on 9/28 so it would not have been used to build the overcloud images. So yes, I think its likely that it doesn't have fix. Also you confirmed above that net.ifnames is still being set to 0 ("net.ifnames=0") on the command line. I think we need to use a compose with a new set of overcloud images.
Compose RHOS_TRUNK-16.0-RHEL-8-20191025.n.2 has the fix.
Thanks for testing Sai.
Verified on RHOS_TRUNK-16.0-RHEL-8-20191122.n.2
Moved to verify mistake, still under testing
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/RHEA-2020:0283