I have a problem with repairing my duplicati database on my synology nas:
A single backup job with ~80GB of photo data - backup stored on ondrive.
I had two successful runs/versions but than the backup progress crashed due to no more space available in my temp folder. This was my mistake, as I had specified “TMP” instead of “TEMP” in the environment variable. But after this was fixed the database was broken and could not be repaired.
So I decided to delete it and run a recreation - this runs for several hours and if I want to check the progress the web server is some kind of dead (running but not serving the site - loading indefinitely).
If I kill and restart the Duplicati process I can see an error message saying that the process was not successful (but I can’t see an error there - local and remote log are both empty).
Message: “Object reference not set to an instance of an object”
And this time there definitely enough space left on temp dir and in the home dir (where Duplicati places the sqlite db) .
I also tried to export my backup-config and reinstall Duplicati (also deleted the folder under .config).
But after importing the backup-config I have the same problem again.
I have the same setup running at an other NAS(same type) with even more images (~180GB) without any problems - but there I didn’t made the mistake with the temp variable naming.
I also tracked the memory consumption over the first the hours of repair: always a bit under 80%.
Also I saw that the process bar is slowly moving til that point near the end where it stops for a longer time before the server crashes.
NAS: Synology DS218j
RAM: 512 MB
Duplicati version: 184.108.40.206_beta_2020-01-18
Screenshot from a single run where I was able to screenshot the last screen in browser after such a crash:
Logfile - created with the commandline option and level Info (unfortunately not from the same run as the screenshot):
Edit: the backup job starting in the log at 06/10 2am is the normal weekly start of that backup job.
Can you please help me to get my backup running again? Best case without loosing the two versions online and without reuploading 80GB (that took me quite a while with my internet connection here).
If you need further information, please let me know.
Thanks in advance!