World isn't saved by restarting server

Hello everybody,

I have got a big problem on my Minecraft server. After restarting the server the world isn't like it was before the restart. Sometimes the world is like a few days before. Everything what was built is deleted.
I don't know why there is such a problem. I have the server since 3 months but never such things happened.

I think the problem is the session.lock. I think this won't be converted.
I did a backup one day before I restarted the server and a mine that i've built 2 days before was away after the restart. After uploading the backup it wasn't there too. The world wasn't saved before the backup or so...
Do you have any ideas or suggestions?


The hoster is "Nitrado" and my craftbukkit build is 740 (I tried to update, when these things happened it was build 733)
Here is my minecraft.log:
http://pastebin.com/3gnuaBfM

Edit: Here is a list of my plugins:
Backup, bMobs, CraftBukkitUpToDate, DropBonus, dynmap, Essentials, iChat, iConomy (not used),LWC, MobileAdmin, Nethrar, Permissions, RegexFilter, Stackable, Whitelist, WorldEdit, WorldGuard

EDIT2:​

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If anyone has the same problem. It is because of the plugin "Backup". It disables level saving and when something is wrong configured or the bukkit build isn't the right.​

 

The problem is mostly solved.
I use at the moment AutoSave. It saves the world every two and a half minutes...
It's very good...
And I cleaned up my server a little bit.
But on my server we have got fly mod and the world is over 100mb big...
Does anyone know how to delete some parts of the world? Is it possible?

 

@mc.donkeyhonk it isn't possible to delete chunks of the world unless you really want risk corrupting your world file. My file has gotten over 5GB so size will always continue expanding if you let.

 

If you really want to delete chunks, you could first make a backup copy of your world, then run MCEdit on your world and delete the chunks. Then try running your server with the new world and see if it works or not. If it doesn't work and you get an error that is related to chunks, then run Chunkster (can be found on the bukkit forums) and that will attempt to fox the corrupted chunks. If that doesn't work, then sorry I can't help you.

 

Thank you.
It is a good idea to delete chunks with MCEdit. But when I delete these chunks will they be remade when I go into that region?

 

They'll be remade to their natural state. This means that if you noticed that there's a massive line of chunks going out to nowhere, you can delete those and, if someone else goes over there again, they'll be generated just like they were before. Also, if you're having issues with world size, I recommend BorderGuard as it will keep players within a set area. That will keep the map from expanding to a massive size.

 

The Problem that the World does not save on a restart comes from the plugin "Backup" after it perfomred a backup.
I had the same problem as you and when I removed the plugin saving on a restart worked again.

 

Thank you Agent Kid. I searched for a plugin like this. This helps me a lot. My Nitrado server is sometimes overloaded.

Thank you too, silthus. I have read my whole server.log (5mb^^) and have seen many errors at the backup plugin.
There was "disable level saving" and then a buckup error. I have deleted the plugin a time ago
(I have put this in another directory) but errors exists anyway. My hoster (Nitrado) has a backup function. Is this the reason?

But thank you anyway. The server doesn't crash so often (just at overloaded...) and when a crash happens just 2 and a half minutes are lost.

Code:

2011-05-19 21:58:37 [INFO] Disabling level saving..
2011-05-19 21:58:37 [INFO] ConsoleCommandSender: Disabling level saving..
2011-05-19 21:58:37 [SEVERE] java.lang.NullPointerException
2011-05-19 21:58:37 [SEVERE]     at backup.BackupTask.backup(BackupTask.java:97)
2011-05-19 21:58:37 [SEVERE]     at backup.BackupTask.run(BackupTask.java:71)
2011-05-19 21:58:37 [SEVERE]     at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:33)
2011-05-19 21:58:37 [SEVERE]     at java.lang.Thread.run(Unknown Source)
2011-05-19 22:05:10 [INFO] Forcing save..
2011-05-19 22:05:10 [INFO] CONSOLE: Forcing save..
2011-05-19 22:05:10 [INFO] Saving chunks
2011-05-19 22:05:10 [INFO] Save complete.
2011-05-19 22:05:10 [INFO] CONSOLE: Save complete.
2011-05-19 22:05:10 [INFO] Unknown console command. Type "help" for help.