Incorrect Free Space Warnings

ts678 · April 23, 2026, 10:55pm

This needs dev input, but it looks like 2.3.0.0_stable_2026-04-14 rewrote it.

github.com/duplicati/duplicati

Check free temporary space (#6753)

master ← feature/check-temp-space

opened 09:37AM - 06 Feb 26 UTC

kenkendk

+262 -109

This PR adds checks for free temporary space when starting the server and when r…estoring. On systems that have limited space in the temp folder a warning will now be shown. This is intended to capture issues on some Docker systems where /tmp is mounted in memory instead of being disk backed. It will also detect the issue on other systems that are space constrained.

The old FileBackend.cs called an elaborate internal GetDrive() which is now
replaced by a call to the new GetFreeSpaceForPath(). Suspicious code is at

github.com/duplicati/duplicati

Duplicati/Library/Utility/Utility.cs

46bc34934


      
          else if (!OperatingSystem.IsWindows())
          {
              var driveInfo = new DriveInfo(root);

which seems to explain why your quota check is for /.
/dev/loop2 use looks odd to me, but it may not matter.

Thanks for the details. That might have led to the bug.
Old bug in mono (now gone) could not have reverted.