David Raymond
Comments
Same here on my friend's server. It seems like the map will save normally most of the time. But will randomly not save at all and revert back to an older version of itself. It is extremely frustrating to play there now, as there is no way to know if our progress will be saved or not.
What are the possible causes? Please fix this!
@Ben Standen
I'd recommend you cancel your Realms subscription, because as you can see, this issue is unresolved since 2014, and not even assigned. Me and my friends ran into this problem after 2-3 months without this issue, then it started happening roughly 30% of the time. This is why we cancelled our Realms as well. Now we play the same map in LAN.
I actually have a theory (albeit very improbable) about what could cause this problem, but I can't verify, since I don't have physical access to the servers 😛
If I'm right, the Realms are running on Virtual machines, which do not contain the map data, they would contain stuff like login info, stats and what not. The actual maps (again, if I'm right) are saved on RAID arrays, from which the Virtual machine loads the data when booting up (via optical fiber?).
The Realms will only save once the server (Virtual machine) shuts down due to inactivity, and sometimes is unable to access the RAID array in "write" mode. So, when booting again once a player logs in, it loads whatever is still on the array, which is an older version of the map, because the Realm was unable to write on the array at the last shut down.
This issue seems to happen to only a few people, which would mean only a few arrays are affected by this issue (Are they on the same network switch? Are they plugged on the same faulty battery?)
Again, this is my highly improbable theory, and also the only way I could explain this issue since I don't have physical access to the machines.