Problem Suddently auto back not working

[MaZy]

Hello we are using FTB Infinity 1.8 (latest version)

We have suddently a problem. Our backup file is already over 1 gb (and this is the problem I guess). Our server cannot do backup. We get this message:

[21:52:20] [Server thread/INFO]: Server Backup started!
[21:52:20] [Server thread/INFO]: Server launched a manual backup!
[21:52:20] [Thread-315/INFO] [FTBUtilities]: Backing up 1448 files...
[21:52:20] [Thread-315/INFO] [FTBUtilities]: Compressing 1448 files!
[21:52:20] [Thread-315/INFO] [FTBUtilities]: [0 | 0.00%]: world/region/r.-10.-11.mca
[21:52:20] [Thread-315/INFO]: Failed to save world! (java.io.IOException)

This happens ONLY if I have two backups which is bigger than 1 gb. If I delete one so I can do backup without any problems. But I don't get why. If keep this both server gets the error above.
Before it was so big.. i could have many backups like 6.

Is there a filesize limit or something else?
Currently I just did in config "backups_to_keep": 1. In this case it works but rlly not good solution

 

[grandrolf]

Do you have enough space on your machine?

 

[MaZy]

I think you could be right. Never thought about it. I did a complete backup before I updated the infinity lite pack.. there were 10 backups each 1gb.

I deleted it now on our linux machine.. I will check soon if this will work but I think this could solve this problem.
Thx 4 the idea