Today while working in my Lab I was seeing following warning message on my Esxi host:
Deprecated VMFS volume(s) found on the host. Please consider upgrading volume(s) to the latest version

This error occurred just after I added a new shared LUN from my openfiler appliance.
If you SSH to Esxi host you will see error similar to as shown below in the /var/log/hostd.log file
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[root@harry:/var/log] cat hostd.log | grep "VMFS volume" 2016-04-01T16:51:14.942Z warning hostd[337F2B70] [Originator@6876 sub=Hostsvc.DatastoreSystem opID=7e27fc0f-5d18-42e9-881e-32243c0ab973-1223-ngc-25-e4-30-bf0c user=vpxuser] VMFS volume [/vmfs/volumes/56fea6e4-8714148f-7b99-000c291899c1] of version [0] is not supported. |





