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External S3: large file (re)upload results in upload connection error #16551

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External S3: large file (re)upload results in upload connection error#16551
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@aatdark

Description

@aatdark
aatdark
opened on Feb 19, 2026

⚠️ Before posting ⚠️

  • This is a bug, not a question or an enhancement.
  • I've searched for similar issues and didn't find a duplicate.
  • I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
  • I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

  1. create a large file (e.g a 100MB video)
  2. upload the file from android client to an external S3 folder
  3. reupload the same file from android client -> fails with connection error

Expected behaviour

successful reupload, no error on app

Actual behaviour

Connection error displayed in Uploads section of the app (after 100% upload). The file is uploaded successfully though

Android version

15

Device brand and model

Fairphone Gen6

Stock or custom OS?

Stock

Nextcloud android app version

3.35.2

Nextcloud server version

32.0.5.0

Using a reverse proxy?

I don't know

Android logs

No response

Server error logs



Additional information


Folder is hosted on external files on a S3 server (garage) on a home internet connection with fast down, slow uplink.

On the web application the re-upload succeeds.


I suspect the timeout settings are different on web / android. After the full upload the backend triggers a GET of the existing video file which takes 3min (slow uplink) to succeed before it executes the PUT.


External Files settings:


    

  • multipart copy deactivated
    • 

  • path style activated
    • 

  • legacy auth v2 deactived
    • 



# Webinterface upload of already existing file [WORKING]:

garage_s3  | 2026-02-19T10:56:52.348853Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43966 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T10:56:52.394129Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43966 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket?versioning
garage_s3  | 2026-02-19T10:56:52.468786Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43966 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T10:56:52.891325Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43970 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T10:56:52.937044Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43970 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4
// --- conflict resolution on web interface - upload new file
garage_s3  | 2026-02-19T10:57:03.089737Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:50888 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T10:57:03.098849Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:50894 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T10:57:03.133607Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:50888 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4
garage_s3  | 2026-02-19T10:57:03.143382Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:50894 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T10:57:20.151673Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T10:57:20.197166Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T10:57:20.311419Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&prefix=VID.mp4%2F&max-keys=1
garage_s3  | 2026-02-19T10:57:20.357564Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4/
garage_s3  | 2026-02-19T10:57:20.358162Z  INFO garage_api_common::generic_server: Response: error 404 Not Found, Key not found
garage_s3  | 2026-02-19T10:57:20.490956Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59850 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/VID.mp4
// ---  slow because of uplink limitation
garage_s3  | 2026-02-19T10:59:04.520997Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) POST /nextcloud-bucket/VID.mp4?uploads
garage_s3  | 2026-02-19T10:59:05.216212Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) PUT /nextcloud-bucket/VID.mp4?partNumber=1&uploadId=67d32da828a3bdf7b6ca7c64fb3e8d57afc184a5ed11285f95658f820042fa6e
garage_s3  | 2026-02-19T10:59:30.927267Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) POST /nextcloud-bucket/VID.mp4?uploadId=67d32da828a3bdf7b6ca7c64fb3e8d57afc184a5ed11285f95658f820042fa6e
garage_s3  | 2026-02-19T10:59:30.984876Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4
garage_s3  | 2026-02-19T10:59:31.029204Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&prefix=VID.mp4%2F&max-keys=1
garage_s3  | 2026-02-19T10:59:31.074184Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:59840 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4/
garage_s3  | 2026-02-19T10:59:31.074847Z  INFO garage_api_common::generic_server: Response: error 404 Not Found, Key not found
garage_s3  | 2026-02-19T10:59:31.928668Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43226 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T10:59:31.974708Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43226 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket?versioning
garage_s3  | 2026-02-19T10:59:32.024018Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:43226 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=

result: successful upload on webinterface, no error msg

# Upload with android app [UPLOAD ERROR]

garage_s3  | 2026-02-19T11:01:43.767890Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:52514 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:43.814283Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:52514 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket?versioning
garage_s3  | 2026-02-19T11:01:44.039441Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:52514 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:01:44.400690Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:52518 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:44.444850Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:52518 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:01:47.751720Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:51428 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:47.797210Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:51428 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:01:48.191809Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:51442 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:48.237515Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:51442 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:01:48.683772Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:51448 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:48.729514Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:51448 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:01:56.647815Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34758 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:56.692371Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34758 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:01:57.197538Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34768 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:01:57.243525Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34768 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4
/-- conflict resultion on app - reupload local version
garage_s3  | 2026-02-19T11:02:02.249542Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34770 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:02:02.295038Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34770 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:02:03.094929Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34782 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:02:03.139062Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:34782 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:02:10.511900Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:46176 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:02:10.557636Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:46176 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:02:16.530758Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56800 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:02:16.575120Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56800 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:02:20.851165Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket
garage_s3  | 2026-02-19T11:02:20.897083Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&delimiter=%2F&prefix=
garage_s3  | 2026-02-19T11:02:21.012729Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&prefix=VID.mp4%2F&max-keys=1
garage_s3  | 2026-02-19T11:02:21.059340Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4/
garage_s3  | 2026-02-19T11:02:21.060216Z  INFO garage_api_common::generic_server: Response: error 404 Not Found, Key not found
garage_s3  | 2026-02-19T11:02:21.217087Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56826 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/VID.mp4

/-- Connection error on app in Uploads section around 2026-02-19T11:03:30
/-- s3 is completing the GET request

garage_s3  | 2026-02-19T11:04:07.180588Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) POST /nextcloud-bucket/VID.mp4?uploads
garage_s3  | 2026-02-19T11:04:07.912136Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) PUT /nextcloud-bucket/VID.mp4?partNumber=1&uploadId=71a92c2083912de1fae7d44de886c2449956519396b3b9c3bd92d4f53637afe4
garage_s3  | 2026-02-19T11:04:33.690146Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) POST /nextcloud-bucket/VID.mp4?uploadId=71a92c2083912de1fae7d44de886c2449956519396b3b9c3bd92d4f53637afe4
garage_s3  | 2026-02-19T11:04:33.750501Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4
garage_s3  | 2026-02-19T11:04:33.796197Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) GET /nextcloud-bucket/?list-type=2&prefix=VID.mp4%2F&max-keys=1
garage_s3  | 2026-02-19T11:04:33.842764Z  INFO garage_api_common::generic_server: [::ffff:172.30.198.5]:56814 (key GK1687cb20redacted2e99e257) HEAD /nextcloud-bucket/VID.mp4/
garage_s3  | 2026-02-19T11:04:33.843177Z  INFO garage_api_common::generic_server: Response: error 404 Not Found, Key not found

result: upload seems successful, error on app persists.

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