Problem Every player made change gone

[Cort3z]

Hi,
I have had a server running for as long as FTB has been around. It is awesome. However, lately I had an issue where I needed to bring back my server from a backup. This seems to work fine, except that all of the player-made changes are gone. It is as if the world is generated anew from the seed, however every player still have their inventory intact. What can possibly be wrong here? What should I try to do to fix this? And where do I start?
I have tried to run the server on multiple systems including Win. 7 (two machines), and Ubuntu 12.10. All have the same issue.
The server says that it is running MC 1.4.2. I don't actually know how to get the FTB version from the folder. It was running the standars mod pack, nothing added or removed.
Any ideas?​

 

[Dingham]

What pack are you using?

Hate to ask... Are you sure you did you back ups correctly? What method were/are you using? Because its sounds like only the player files are backed up...

 

[Shivy011]

When you say every player made change, does it include vanilla blocks?

 

[Cort3z]

We were playing the ftb-beta-A pack. It appears that even vanilla blocks are missing. I can tell by the fact that our huge quarry area is gone among other thing.

The way I did the backup was that i made a zip of the entire folder. This is the script I used for backup (.bat file):

cd C:\Users\MyUsername\Desktop\FeedTheBeast\Server
7z a ..\..\mcbackup\FeedTheBeastServer%date%.7z

 

[Cort3z]

Noone has a clue to what is going on here?

 

[maxpowa]

Did you perhaps run the backup while the server was running with save-on? Because if you did, then what probably happened is you copied the chunk files while they were being modified, causing 7zip to ignore them.

Perhaps edit your backup script to do the following:
- Run command "save-off" in server console
- Run command "save-all" in server console
- Run your current script
- Run command "save-on" in server console

 

[Cort3z]

Well.. My server crashed hard, so I can't run the backup script again. That is a bit sad, but I really hope that the backups I have (at least one of them) will work. If not a lot of game-time is lost. If anyone think they are able to fix this, I will gladly send you the backups for you to have a look at

 

[maxpowa]

You could test each one individually by opening in MCEdit or similar program, that would likely load the map faster than your server would to test the backups.

 

[Cort3z]

Thanks for the tip with MCEdit! Great tool

Humm.. I can see now that a very large square are of my chunks are simply gone. I am guessing this is some sort of corruption. Is there a way to recover from this, or should I simply cross my fingers and hope that one of my backups don't have this issue?

 

[maxpowa]

Its corruption, due to those chunks being loaded into the server memory when you backed up, you'll just have to cross your fingers and hope that one of them happened to backup when those chunks weren't loaded.