Since the last server restart I am missing some inventory items. What is missing: diamond pick, diamond shovel, diamond sword, about a stack of torches, bucket of water, about half stack of cooked pork. I had them on me when out mining before the server went down. When i logged back in the above items were not in my inventory. One other player said they were missing things too (don't remember who).
There was likely a very minor rollback. You likely have the materials you used to make those items, or they are sitting in your chests somewhere.
I've had the diamond tools for a long time (I have /repair). I checked all of my chests, whatever I had with me when server went down is gone.