I'm guessing the objects won't re-align until all disks are on v2.5 format (which we don't have).
In total we have 5 Hosts - esx01 to esx05, currently esx01 & esx02 are still showing as v2 disk format, esx03, esx04 & esx05 are showing as v2.5.
Looking at the logs I can see the esx01 & esx02 hosts are logging errors constantly into /var/log/syslog (unsure if this is related)
2016-04-29T08:27:42Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:42Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:44Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 2 seconds (quick failure 4)
2016-04-29T08:27:44Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 2 seconds (quick failure 1)
2016-04-29T08:27:44Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:44Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:45Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 1 seconds (quick failure 2)
2016-04-29T08:27:45Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:45Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 1 seconds (quick failure 5)
2016-04-29T08:27:45Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:46Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 1 seconds (quick failure 6)
2016-04-29T08:27:46Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 1 seconds (quick failure 3)
2016-04-29T08:27:46Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' respawning too fast, sleeping for 5 seconds
2016-04-29T08:27:46Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
2016-04-29T08:27:47Z watchdog-vsanperfsvc: 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc' exited after 1 seconds (quick failure 4)
2016-04-29T08:27:47Z watchdog-vsanperfsvc: Executing 'python ++group=host/vim/vmvisor/vsanperfsvc /usr/lib/vmware/vsan/perfsvc/vsanperfsvc.pyc'
Might be time to talk to support?