Data backup and restore

[Tim Flicker]

Hi Jena Community,

I'm working on an auto data backup and restore feature for our platform 
which uses Jena for data access (gTDB and xTDB). The requirement is to 
have the application up during the backup operation although it can be 
taken down for restore. I've been looking into the tdbbackup and 
tdbloader scripts that come packaged with Jena.

Is it safe to run the tdbbackup script while graphs are being access 
either read or write? An alternative approach would be to 
programmatically place lock files which seems like it would put the 
system in "read only" mode. Once the lock files are in place, I could do 
a backup at the file system level then remove the locks once complete.

Any advice on how to proceed with this operation safely is greatly 
appreciated.

Regards,
Tim