Neo4j Linux 3.5.32 backup empty

[WilliamsDev]

Hi, we are using Neo4j 3.5.32 in a Linux/Debian Ec2 instances, using crontab with a .sh backup file, a backup file size are around 850MB but sudenly (without any modification) the backup size are 29kb, why is this happen?, we try to execute the backup file in DEV and QA environment and this anomaly is present too.

I hope you can help us

[busymo16]

Hi @WilliamsDev,

Can you give some more details regarding your configuration so that we can see where the problem might rely? With the specifications that you provided, so the file size shrinking suddenly, not much can be done.

[WilliamsDev]

Hi,

thanks for your reply. 

Sure, the configuration is just the default one, we only touched the recomended by Neo4j:

dbms.memory.heap.initial_size=512m
dbms.memory.heap.max_size=512m

dbms.memory.pagecache.size=512m

dbms.backup.enabled=true

dbms.jvm.additional=-Dunsupported.dbms.udc.source=debian

dbms.connector.bolt.listen_address

Just thoose properties had been modified just when the environment was created

In the following image, you can see how the size of the backup file has changed. Is important to mention that the db has the entire data without any problem.

[busymo16]

It might be the case that only an incremental backup might have been done on the last ones, meaning that it has just backed up the data missing from the earlier ones. Can we see how you are doing the backup? Could you also give it a check if you still have storage on that directory/machine that you are doing the backup. The lack of storage might cause and issue as well.