Failed to load player data

[goosenation]

Hi,

When a player first joins, there is no error. Player is also loading correctly upon rejoin.

However, each time the server is restarted, I get the following error:

[08:36:35] [Server thread/WARN]: Failed to load player data for <playername>
[08:36:35] [Server thread/WARN]: Failed to copy the player.dat file for <playername>
java.nio.file.AccessDeniedException: worlds/world/playerdata/<playeruuid>.dat

I have verified that the file indeed exists at this location.

The folder playerdata has the following permissions:

The player dat files have this permission:

What can I do to ensure that the player files can be read after restarting the server?

The is the full entry in the log (part of that seems unrelated to the error though):

[08:36:35] [Server thread/WARN]: Failed to load player data for <playername>
[08:36:35] [Server thread/WARN]: Failed to copy the player.dat file for <playername>
java.nio.file.AccessDeniedException: worlds/world/playerdata/<playeruuid>.dat
at java.base/sun.nio.fs.UnixException.translateToIOException(Unknown Source) ~[?:?]
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(Unknown Source) ~[?:?]
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(Unknown Source) ~[?:?]
at java.base/sun.nio.fs.UnixFileSystem.copy(Unknown Source) ~[?:?]
at java.base/sun.nio.fs.UnixFileSystemProvider.copy(Unknown Source) ~[?:?]
at java.base/java.nio.file.Files.copy(Unknown Source) ~[?:?]
at net.minecraft.world.level.storage.PlayerDataStorage.backup(PlayerDataStorage.java:54) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.world.level.storage.PlayerDataStorage.load(PlayerDataStorage.java:111) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.world.level.storage.PlayerDataStorage.load(PlayerDataStorage.java:92) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.players.PlayerList.load(PlayerList.java:481) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.players.PlayerList.placeNewPlayer(PlayerList.java:166) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.network.ServerConfigurationPacketListenerImpl.handleConfigurationFinished(ServerConfigurationPacketListenerImpl.java:163) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.network.protocol.configuration.ServerboundFinishConfigurationPacket.handle(ServerboundFinishConfigurationPacket.java:22) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.network.protocol.configuration.ServerboundFinishConfigurationPacket.handle(ServerboundFinishConfigurationPacket.java:8) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:29) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:155) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1446) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:175) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:129) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1426) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1420) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:139) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1377) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1385) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1262) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:308) ~[paper-1.21.5.jar:1.21.5-103-2ba1675]
at java.base/java.lang.Thread.run(Unknown Source) [?:?]
[08:36:35] [Server thread/WARN]: Failed to load player data for <playername>
[08:36:35] [Server thread/INFO]: <playername>joined the game
[08:36:35] [Server thread/INFO]: <playername>[<ip:port>] logged in with entity id 93 at ([world]9.5, 89.0, -4.5)

[itzg]

Try setting UID to 1005

https://docker-minecraft-server.readthedocs.io/en/latest/configuration/misc-options/#running-as-alternate-usergroup-id

You might also need to do a one time fix-up of the file/directory ownership with chown or equivalent.

[goosenation]

Thanks, will give that a run!

[goosenation]

Yup. That fixed it. 👍