Yes - both systems have a remote volume size of 100 MB. I had to increase it a while back due to errors I was seeing - IIRC it had something to do with listing files.
Ok, that size shouldn’t be an issue. Was just making sure it wasn’t set to something insanely large like 100+ GB.
Check the Live Log to make sure something is happening… go to About → Show Log → Live → and set the dropdown to Verbose. You should see activity there.
With “profiling” it adds 1 additional line to each:
system 1 - "Jul 21, 2021 7:59 PM: RemoteOperationDelete took 0:00:00:00.105 "
system 2 - “Jul 25, 2021 9:45 PM: RemoteOperationDelete took 0:00:00:00.119”
Well it definitely seems like it’s stuck. You can try canceling the operation from the web UI, but I doubt it will work in this case. If it doesn’t, try killing/restarting Duplicati. Do this on just one system so we can see how it goes.
Yes, had to restart. On restart it immediately started a backup which failed with “Found 573 files that are missing from the remote storage, please run repair”, which I expected it might do based on past experience.
Underlying problem had to be something to do with changing the retention schedule, as backups were running without any known issues prior to the change.
Agreed, but there must be some other variable at play, as many have adjusted retention policies without issue. Would be interesting to see if we could reproduce this on demand.
Out of curiosity have you customized your deduplication block size (default is 100KB)? Your backups are quite large, and the default block size of 100KB is probably too small. This results in a large local database and slow database operations.
On the off chance that it is relevant, in the past I had to move the Duplicati directory to a different filesystem, and replaced /root/.config/Duplicati with a symlink. Systems have been running with this configuration for several weeks. Also, due to issues with disk space doing a rebuild, I have TMPDIR set in /usr/bin/duplicati-server to point to a temp direcotry on a filesystem that has more space - this is a more recent change.