Hello! I've noticed since upgrading my local Minecraft Java Server from 1.17.4 to 1.18 and 1.18.1, that the game continually writes updates to the hard drive, regardless if players are logged in or not. Versions earlier than 1.18 did not do this. Since my server runs on an SSD, I now have to stop the server when we're done playing.
I have tracked it to region file server/world/region/r.-1.0.mca. No idea why this incessantly gets updated now.
Server is running on Ubuntu Desktop 20.04.3 LTS, 64 bit.
Hopefully someone can assist.
Comments 5
Does MC-245817 describe your issue?
Yes, actually. Sounds like the same issue. Didn't see that when I opened this report. Wish he tagged the "server" label.
I found the problem. I have a mob farm that uses a bunch of repeaters and a redstone torch in an infinite loop. Disabling that redstone loop stopped the writing.
When I removed that region file as I mentioned in the initial complaint, I must not have allowed it enough time to finish doing whatever it was doing and jumped the gun, thinking the write issue was there when it wasn't.
Thank you for your report!
We're resolving and linking this ticket forward as a duplicate of MC-245817, as that ticket contains more detailed information and/or has already been triaged by Mojang.
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So far, I've tried:
Restored from my 1.17.4 backup and re-upgrading straight to 1.18.1 - continues to update/write
Deleted the r.-1.0.mca chunk. Once it regenerates, it continues to update/write
Starting a new 1.18.1 world - stops writing after a few minutes
So it isn't happy with something left over post upgrade in the world. Disk writing floats around 50k/s with bursts around 300k/s. iotop in Ubuntu calls the process [IO-Worker-##] and the ## is a number that can be anything. Currently, it says it is 14 and it will slowly increase in value.