I tried the URLs in the log and they would not give access. This is what I got.

 

replace localhost with the correct IP for Duplicati...

That works but it is telling me the token has expired? and will not let me in.

monarc, restarted the container and then used the new URL and it worked.

 

THANK YOU!

Docker image getting more and more full when performing large backup.

 

Hi guys,

 

So, been using this image for 4 or 5 years now, and has been happily backing up everything I need without hardly a hitch. It really is a superb piece of software.

That said, since boxing day this year I have been getting alerts each Thursday (when my appdata backup kicks in) about my docker mage filling up. After the backup is complete it goes back to normal.

 

Before a backup it sits at 75% (of 45gb). On the 26th Dec it triggered the 90% warning, and did that for a few weeks, then 95%, and today 97%! After the backup it goes back to its previous size.

Obviously I'm getting a little concerned.

 

Whilst I could increase the size of my docker image, I fear it'll just keep getting larger and larger.

I have all paths mapped to locations on my array and cache. I find myself wondering whether there is another path I can add to the docker configuration that may be getting hammered during backup that's not in the default?

 

Appreciate any help you can provide. If want any other info please shout.

 

Cheers,

Pacman

 

PS: I suppose it _could_ be the app backup plugin too. I'll doublecheck there too.

PPS: All settings look fine, and it occurred to me as was writing a similar post that it couldn't write to the docker image anyway, so abandoned that idea. I feel it must be something here. although I guess could be the stopping and starting of other containers, but doesn't feel like that should be writing this amount of data!

Edited February 6, 20251 yr by SudoPacman

On 2/6/2025 at 10:00 AM, SudoPacman said:

Docker image getting more and more full when performing large backup.

 

Hi guys,

 

So, been using this image for 4 or 5 years now, and has been happily backing up everything I need without hardly a hitch. It really is a superb piece of software.

That said, since boxing day this year I have been getting alerts each Thursday (when my appdata backup kicks in) about my docker mage filling up. After the backup is complete it goes back to normal.

 

Before a backup it sits at 75% (of 45gb). On the 26th Dec it triggered the 90% warning, and did that for a few weeks, then 95%, and today 97%! After the backup it goes back to its previous size.

Obviously I'm getting a little concerned.

 

Whilst I could increase the size of my docker image, I fear it'll just keep getting larger and larger.

I have all paths mapped to locations on my array and cache. I find myself wondering whether there is another path I can add to the docker configuration that may be getting hammered during backup that's not in the default?

 

Appreciate any help you can provide. If want any other info please shout.

 

Cheers,

Pacman

 

PS: I suppose it _could_ be the app backup plugin too. I'll doublecheck there too.

PPS: All settings look fine, and it occurred to me as was writing a similar post that it couldn't write to the docker image anyway, so abandoned that idea. I feel it must be something here. although I guess could be the stopping and starting of other containers, but doesn't feel like that should be writing this amount of data!

 I have been having the same issue and it is Duplicati filling up the Docker Image. I have the /temp directory mapped but at some point he stopped writing in to it. I found files from 2024 in there but no new ones. I would really like help here. What do we need to do to have it use the correct directory again?

33 minutes ago, Jakobustrop said:

 I have been having the same issue and it is Duplicati filling up the Docker Image. I have the /temp directory mapped but at some point he stopped writing in to it. I found files from 2024 in there but no new ones. I would really like help here. What do we need to do to have it use the correct directory again?

I seem to have found the answer myself. So apparently duplicati is putting temp files into:"/run/duplicati-temp/" so you have to change the docker path to that or use the "tempdir" options in the "Default options" Section of the Duplicati settings to remap it.

Hi all, 

 

I am trying to create multiple duplicati instances. I am using tailscale to connect to the remove tailvaults. However only the first container i created was able to connect to the remote tailvault. the second one is throwing an error saying its unable to connect. 

 

I exported the backcup config from the first instance and imported to the second, just to make sure the settings are the same, and i still would not connect. Is there some special config i need to have more than 1 duplicati instance running at the same time and connecting to the same vault? 

 

Thanks. 

On 2/22/2025 at 10:33 PM, Jakobustrop said:

I seem to have found the answer myself. So apparently duplicati is putting temp files into:"/run/duplicati-temp/" so you have to change the docker path to that or use the "tempdir" options in the "Default options" Section of the Duplicati settings to remap it.

Thanks, I'll give that a look!

 

Didn't get a mail saying you'd replied, so apologies for taking a while.

 

Edit: Yeah, changed tempdir to /tmp
Thanks for the help!

Edited February 27, 20251 yr by SudoPacman

Hi everyone,

 

I just created my first Duplicati docker, and wanted to create the first backup task. In the “Source data” step, I actually wanted to select folders within a share. But the GUI only shows the folders User Data, Computer and Source Data (empty). I do not understand this directory tree. I expected it to show me the shares, but it looks like a list of the Linux root folder. I tried to manually add a path /mnt/user/files/ , but the message "The path does not seem to exist. Would you like to add it anyway?" showed up. But I'm pretty sure the path exists
How is it possible to backup the shares?
Thanks a lot for some input!

Edited March 6, 20251 yr by Amiga1000

On 3/6/2025 at 2:49 AM, Amiga1000 said:

I'm pretty sure the path exists

It doesn't, unless you map it.

 

Each container is an independent little linux install, it only sees the folders inside the container until you tell it how to see external paths. Look at the install template, on the path shown as Source Data on the container side, you put the /mnt/user path on the host side. Then when you look in the Source Data folder inside the container, it shows the contents of whatever folder you mapped there.

On 2/25/2025 at 9:36 AM, [email protected] said:

Hi all, 

 

I am trying to create multiple duplicati instances. I am using tailscale to connect to the remove tailvaults. However only the first container i created was able to connect to the remote tailvault. the second one is throwing an error saying its unable to connect. 

 

I exported the backcup config from the first instance and imported to the second, just to make sure the settings are the same, and i still would not connect. Is there some special config i need to have more than 1 duplicati instance running at the same time and connecting to the same vault? 

 

Thanks. 

Does anyone have any ideas on how to run 2 duplicaticontainers at the same time connecting to various tailvaults? 

Edited March 9, 20251 yr by [email protected]

Anyone have an idea of why Duplicati is writing so much to my cache disk during backup operations? I have the /run/duplicati-temp/ directory remapped to RAM at /dev/shm/ and I can confirm that it is putting temp files in there, however, I am still seeing tons of disk writes to my cache when it's backing up. I've confirmed that these writes stop after the backup process finishes.

Hello,

I tried to use this (great) video guide to make a USB-Backup: Backing Up Unraid with Duplicati: Complete Guide for Cloud, USB, Local and Remote Backups

Im trying but is it possible that theres a problem with ZFS-Pools to backup source?

Nevermind the script thingie my 12 TB backup finished immediately in unraid. But in duplicati i get I/O errors.

I also can only chose the one big ZFS Pool as backup source, duplicati doesn´t show any subfolders etc.

Thanks in advance

Hi Guys

I am new to Duplicati and have just set it up to create regular backups of my shares onto an 8Tb USB disk - I have backed all the shares up and it worked great - total space used for all my backups is about 2.6Tb.

I then opened a backed up Word file and changed the date in it, then re-ran the backup. I then tried to restore the original backed up file, so it would restore the file with the original date in the file. The restore worked and the file was restored in place of the amended file.

However I got an error...

Despite this error saying access is denied, the file has been restored to the original, so this is great. However I noticed that the restored file is timestamped with the time of the restore - which is obviously not correct.

So, in destination -> options I populated the user/password with my user who has read/write permissions and re-ran the restore and it said restored with no errors... so I assume the error message above is because the share is set to Private - but I am not sure how it restored the file if access was denied... and I really want to make sure that any files I restore are restored with the original timestamp as this change will upset other programs which access the data.

Can anyone advise?

But, on the face of it, much better than my old manual backups using Areca Backup on a USB drive from a VM - so thanks :)

Edit [SOLVED] - I deleted the file with the wrong timestamp from my share and restored the file again and this time it ran seamlessly and restored the correct time stamp... so, perhaps, if there is a file there already which is being overwritten it uses the restore timestamp rather than the original timestamp?!?! Either way, it seems perfect now.

Edited August 7, 2025Aug 7 by SliMat
[SOLVED]

HELP - Files Deleted?!?!?!

Hi all,

As above I am very new to Duplicati, so am still learning my way round... but am very concerned because I just checked the logs on last nights automated backup and it says that it has deleted 481 files and 94 folders!!!

I haven't deleted any files so am very concerned what has been deleted, this is the log;

Can anyone advise if this is me mis-interpreting the log - or has Duplicati just deleted a whole lot of my files from my backup source?

Is there a way to see what has been "deleted"?

Since my initial test backup, I have ticked the "Exclude Hidden Files", "Exclude System Files" & "Exclude Temporary Files"... so I was wondering if it has deleted any of these files which were included on my initial backup?

Thanks in advance

Edited August 7, 2025Aug 7 by SliMat

I'm having problems doing my first backup. I'm trying to backup the appdata backups from the plugin to google drive, but it's giving me a fatal error. Here's the logs: https://privatebin.net/?32ed93ec3cb641b7#DmnvsY41zaEEUE9BBSw7sHVqfhdPTFenVybUnf4WVENy

unraid-diagnostics-20251002-1828.zip

Hello,

I've installed Duplicati but I found a problem..

If im restarting Duplicati I cannot access it anymore. This is the error im getting.

It says that my port is already allocated. It's only Duplicati that uses it.

I have to change the port between 8200 and 8201 each and everytime i start it.

Does anyone have a clue why?

This is my template:

tower-diagnostics-20251013-1055.zip

I am having the same problem @gevsan . Did you ever find a fix?

Will start by saying I am new to UNRAID and docker. Just getting to grips with some concepts, but struggling. Limited experience with Linux, but can work with scripting at basic level.

I have written a script to ping a remote server (on my local network) to see if it is running, and return an error code, which, inside UNRAID Terminal works fine. I get error 0 when the remote server is running, and error 1 when it is offline

I am unsure if this a Docker issue or a Duplicati issue, as I can get ping to work in other docker containers.

It is to run from Duplicati as "--run-script-before-required" to stop the backup job if the remote server is not running. After a while I figured out path mapping and the script runs when Duplicati starts a backup. The the log is as expected.

#!/bin/bash

ErrLev=1

ping -c1 -W10 192.168.11.126

if (($? == 0)); then

ErrLev=0

else

fi

exit $ErrLev

However it always results in an error code of 1 as the PING command does not execute with message "bash: ping: command not found".

I am presuming the PING command is not included in the Docker container. Is this correct?

If I am correct, how do I get it in there?

Am I going about this correctly, running the script from inside the Docker (using the update container to add a path to the script)?

2 hours ago, g0rsq said:

Will start by saying I am new to UNRAID and docker. Just getting to grips with some concepts, but struggling. Limited experience with Linux, but can work with scripting at basic level.

I have written a script to ping a remote server (on my local network) to see if it is running, and return an error code, which, inside UNRAID Terminal works fine. I get error 0 when the remote server is running, and error 1 when it is offline

I am unsure if this a Docker issue or a Duplicati issue, as I can get ping to work in other docker containers.

It is to run from Duplicati as "--run-script-before-required" to stop the backup job if the remote server is not running. After a while I figured out path mapping and the script runs when Duplicati starts a backup. The the log is as expected.

#!/bin/bash

ErrLev=1

ping -c1 -W10 192.168.11.126

if (($? == 0)); then

ErrLev=0

else

fi

exit $ErrLev

However it always results in an error code of 1 as the PING command does not execute with message "bash: ping: command not found".

I am presuming the PING command is not included in the Docker container. Is this correct?

If I am correct, how do I get it in there?

Am I going about this correctly, running the script from inside the Docker (using the update container to add a path to the script)?

You can get ping in the container like this:

Add these two variables to duplicati template
Key: DOCKER_MODS

Value: linuxserver/mods:universal-package-install

Key: INSTALL_PACKAGES
Value: iputils-ping

This will install ping in the container.

Example for multiple packs:

INSTALL_PACKAGES=iputils-ping|rsync|git|nginx

Edited November 29, 2025Nov 29 by Niklas

Niklas

Thank you so much for that. Script is now running and doing what I needed it to do.

Hi Guys

Duplicati has been running fine for months, but a couple of days ago I updated from the UnRAID docker page and ever since then I get warnings...

When I check the logs it shows;

"2025-12-03 01:00:00 +00 - [Warning-Duplicati.Library.Main.Controller-UnsupportedOption]: The supplied option --auth-username is not supported and will be ignored"

I seem to remember when I set it up, it couldnt access my source share because of username / password required... so I set authorisation;

It looks like this feature has been depracted... can anyone advise how to fix this?

Thanks

On 12/3/2025 at 9:46 AM, SliMat said:

Hi Guys

Duplicati has been running fine for months, but a couple of days ago I updated from the UnRAID docker page and ever since then I get warnings...

When I check the logs it shows;

"2025-12-03 01:00:00 +00 - [Warning-Duplicati.Library.Main.Controller-UnsupportedOption]: The supplied option --auth-username is not supported and will be ignored"

I seem to remember when I set it up, it couldnt access my source share because of username / password required... so I set authorisation;

It looks like this feature has been depracted... can anyone advise how to fix this?

Thanks

OK, as there was no reply to my above query, i removed the username and password from the settings above and tonight got this error...

• 2025-12-09 01:00:44 +00 - [Error-Duplicati.Library.Main.Controller-FailedOperation]: The operation Backup has failed RemoteListVerificationException: Found 68780 files that are missing from the remote storage, please run repair

Can anyone offer any advice why this has broken in the latest release??

Is there a way to roll back to the previous version of Dullicati to get things working again if this option has been removed in the latest version?

Thanks

I now have Duplicati running nicely, with a script checking destination drive is alive...🙂

The problem I have now is when updating Duplicati from the Docker Tab, the container fails to restart hanging at this line.

I can not do anything other than close the UNRAID window, re-open UNRAID and select restart. I need to do this two times before Duplicati is running again. I do not need to do anything else just restart UNRAID two times

Can anyone tell me what is likely wrong?

Everything is normal to this point where it just says wait!

Thanks