[GH-ISSUE #17489] issue: vector db space not release after delete a knowledge #18305

New Issue

2026-04-20T00:31:07-05:00

GiteaMirror commented

2026-04-20 00:31:07 -05:00

Originally created by @kaac5 on GitHub (Sep 16, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/17489

Check Existing Issues

I have searched for any existing and/or related issues.
I have searched for any existing and/or related discussions.
I am using the latest version of Open WebUI.

Installation Method

Git Clone

Open WebUI Version

0.6.28

Ollama Version (if applicable)

No response

Operating System

centOS

Browser (if applicable)

No response

Confirmation

I have read and followed all instructions in README.md.
I am using the latest version of both Open WebUI and Ollama.
I have included the browser console logs.
I have included the Docker container logs.
I have provided every relevant configuration, setting, and environment variable used in my setup.
I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
Start with the initial platform/version/OS and dependencies used,
Specify exact install/launch/configure commands,
List URLs visited, user input (incl. example values/emails/passwords if needed),
Describe all options and toggles enabled or changed,
Include any files or environmental changes,
Identify the expected and actual result at each stage,
Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

the disk space release after knowledge base is deleted

Actual Behavior

create a knowledge base
upload 13000 files (our goods info)
observe the disk space
delete the knowledge base
observe the disk space
To be hones, I don't know if it should release space by delete knowledge base? or should I use the file remove api delete them one by one instead ? the rag takes space more and more, I need to control it.

Steps to Reproduce

create a knowledge base
upload 13000 files (our goods info)
observe the disk space
delete the knowledge base
observe the disk space

Logs & Screenshots

I did't save the log, I may try tomorrow, but my rag takes 1.3 TB space.

Additional Information

No response

Originally created by @kaac5 on GitHub (Sep 16, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/17489 ### Check Existing Issues - [x] I have searched for any existing and/or related issues. - [x] I have searched for any existing and/or related discussions. - [x] I am using the latest version of Open WebUI. ### Installation Method Git Clone ### Open WebUI Version 0.6.28 ### Ollama Version (if applicable) _No response_ ### Operating System centOS ### Browser (if applicable) _No response_ ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** Open WebUI and Ollama. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.** - [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc). - [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps: - Start with the initial platform/version/OS and dependencies used, - Specify exact install/launch/configure commands, - List URLs visited, user input (incl. example values/emails/passwords if needed), - Describe all options and toggles enabled or changed, - Include any files or environmental changes, - Identify the expected and actual result at each stage, - Ensure any reasonably skilled user can follow and hit the same issue. ### Expected Behavior the disk space release after knowledge base is deleted ### Actual Behavior 1. create a knowledge base 2. upload 13000 files (our goods info) 3. observe the disk space 4. delete the knowledge base 5. observe the disk space To be hones, I don't know if it should release space by delete knowledge base? or should I use the file remove api delete them one by one instead ? the rag takes space more and more, I need to control it. ### Steps to Reproduce 1. create a knowledge base 2. upload 13000 files (our goods info) 3. observe the disk space 4. delete the knowledge base 5. observe the disk space ### Logs & Screenshots I did't save the log, I may try tomorrow, but my rag takes 1.3 TB space. ### Additional Information _No response_

GiteaMirror added the bug label 2026-04-20 00:31:07 -05:00

GiteaMirror closed this issue

2026-04-20 00:31:08 -05:00

GiteaMirror commented

2026-04-20 00:31:09 -05:00

@Classic298 commented on GitHub (Sep 16, 2025):

PLEASE Search for existing discussions, issues and pull requests.

This topic has been discussed about way over 20 times now.

Related PR here: https://github.com/open-webui/open-webui/pull/16520

Edit: yes it is intended, but not ideal - check the PR description for the reasoning why it is the way it is today

@Classic298 commented on GitHub (Sep 16, 2025): **PLEASE** Search for existing discussions, issues and pull requests. This topic has been discussed about way over 20 times now. Related PR here: https://github.com/open-webui/open-webui/pull/16520 Edit: yes it is intended, but not ideal - check the PR description for the reasoning why it is the way it is today

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Reference: github-starred/open-webui#18305