Everything has been working fine in my Duplicati instance until around 19 days ago when I started getting these warnings: 2024-12-18 03:03:34 +00 - [Warning-Duplicati.Library.Main.Operation.FilelistProcessor-BackendQuotaNear]: Backend quota is close to being exceeded: Using 930.028 GB of 45.000 GB …

[image] pepperywasp: using this option set to true. Where did you put the option? If in job Advanced options, you also need to check it, like below: [image] If it doesn’t do what it says, maybe it’s a bug, but you can also see if quota-size option helps it.

[image] ts678: Where did you put the option? I set the option here: [image] With limited time to deal with this I have decided to automatically bin any e-mails with this (and only this) warning and wait for a beta release that fixes the root cause. Thanks for your help.

[image] pepperywasp: wait for a beta release that fixes the root cause. The problem with that plan is the root cause doesn’t get fixed until someone figures it out. Reading the size from the wrong partition got fixed, but quota-disable still doesn’t work. Or at least it doesn’t stop that wa…

[image] ts678: The problem with that plan is the root cause doesn’t get fixed until someone figures it out. Reading the size from the wrong partition got fixed, but quota-disable still doesn’t work. I believe the root cause of me getting the error in the first place is (as you say) the issue…

[image] pepperywasp: But I don’t think that is the root cause for me. It might be the root cause for [image] pepperywasp: I still get the warning using this option set to true. but if you’d rather bin e-mails, fine. If you try new workaround attempt, feedback would be nice.

This appears to be fixed in the latest beta.

Hi, sorry to resurtrect this old thread, but I thought I’d add that I just had this issue on verion 2.3.0.0_stable_2026-04-14, with it falsely coming up with a warning saying I was out of space in the backend quota. I’m running on Unraid in a docker and was able to add the string / optoin to disabl…

[image] SatiricalCrab1182: warning saying I was out of space in the backend quota. Please show the warning (as was done in original post), especially since [image] SatiricalCrab1182: I’m running on Unraid in a docker is a bit unusual, and I don’t know if the devs have that. More info …

You can also get a “fresh” reading without a backup by using BackendTester . You can add --reruns=1 if you like, to shorten it. Sample quota test at end: [11:09:47 707] Checking quota... [11:09:47 709] Free Space: 23.46 GiB [11:09:47 709] Total Space: 930.97 GiB [11:09:47 710] Checking DNS names u…

hey @ts678 , so this is the warning message: "2026-04-16 04:00:46 -04 - [Warning-Duplicati.Library.Main.Operation.FilelistProcessor-BackendQuotaNear]: Backend quota is close to being exceeded: Using 3.043 TiB of 30.000 GiB (13.225 GiB available)" I have attached the full log for this backup too. …

Incorrect Free Space Warnings

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kenkendk April 30, 2026, 2:04pm 23

I have a PR that fixes this now:

Spurious Backend Quota Warning