Nextcloud File Locking gets out of sync

apps/notes/lib/Service/Note.php の 174 行付近と apps/notes/lib/Controller/NotesApiController.php の 164-174 行付近から始め、apps/notes/lib/Service/Util.php と lib/Controller/Helper.php を通じてロック処理を追跡します。Android/ブラウザーでの編集シーケンスを再現し、files_lock LockWrapper の trace を調査します。クライアントを交互に使用した後、ファイルがブロックされたままになったり ManuallyLockedException が発生したりせずにノートを同期できれば完了です。

Sometimes the nextcloud android app break and fails to sync a note. Only opening the file in the browser and closing it again resolves it

Steps to reproduce

This issue is not 100% reproducible every time, but I found it using that way:

1. Use Android app to edit notes
2. Edit the file with the website again (after closing the android app)
3. Use the Android app again to edit again

Expected behaviour

The app syncs fine

Actual behaviour

The Server logs an error (attached below)

And the notes app shows an error that is not able to sync. Only if you go to the website, open and close the note, the sync works again

Server

• Notes app version: 6.0.1
• Nextcloud version: 34.0.1
• OS: Debian/LXC
• Web server: apache2 2.4.68-1~deb13u1
• PHP version: 8.4.23
• Database: mariadb

Nextcloud is ran behind an apache proxy server

Client

• Browser (incl. version): Firefox ESR 140.12.0
  • OS: Debian Trixie with Wayland

The other Client is Android 16 using the latest available version of the notes android app

Log files

{
  "reqId": "REDACTED",
  "level": 3,
  "time": "2026-07-17T04:12:11+00:00",
  "remoteAddr": "REDACTED",
  "user": "REDACTED",
  "app": "notes",
  "method": "PUT",
  "url": "/index.php/apps/notes/api/v1/notes/23228?",
  "scriptName": "/index.php",
  "message": "Controller failed with OCP\\Lock\\ManuallyLockedException",
  "userAgent": "Mozilla/5.0 (Android) Nextcloud-android/34.0.1",
  "version": "34.0.1.2",
  "exception": {
    "Exception": "OCP\\Lock\\ManuallyLockedException",
    "Message": "\"files/Notizen/Privat/Todo.md\" is locked, existing lock on file: files_lock/1ed743bc-1034-40ef-9711-3a5ab33e994c",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/nextcloud/apps/files_lock/lib/Storage/LockWrapper.php",
        "line": 213,
        "function": "checkPermissions",
        "class": "OCA\\FilesLock\\Storage\\LockWrapper",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php",
        "line": 150,
        "function": "file_put_contents",
        "class": "OCA\\FilesLock\\Storage\\LockWrapper",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/View.php",
        "line": 1235,
        "function": "file_put_contents",
        "class": "OC\\Files\\Storage\\Wrapper\\Wrapper",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/View.php",
        "line": 680,
        "function": "basicOperation",
        "class": "OC\\Files\\View",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Node/File.php",
        "line": 56,
        "function": "file_put_contents",
        "class": "OC\\Files\\View",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/notes/lib/Service/Note.php",
        "line": 174,
        "function": "putContent",
        "class": "OC\\Files\\Node\\File",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/notes/lib/Controller/NotesApiController.php",
        "line": 174,
        "function": "setContent",
        "class": "OCA\\Notes\\Service\\Note",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/notes/lib/Service/Util.php",
        "line": 25,
        "function": "{closure:OCA\\Notes\\Controller\\NotesApiController::update():164}",
        "class": "OCA\\Notes\\Controller\\NotesApiController",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/var/www/nextcloud/apps/notes/lib/Controller/Helper.php",
        "line": 135,
        "function": "retryIfLocked",
        "class": "OCA\\Notes\\Service\\Util",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/apps/notes/lib/Controller/NotesApiController.php",
        "line": 164,
        "function": "handleErrorResponse",
        "class": "OCA\\Notes\\Controller\\Helper",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 165,
        "function": "update",
        "class": "OCA\\Notes\\Controller\\NotesApiController",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 78,
        "function": "executeController",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/App.php",
        "line": 137,
        "function": "dispatch",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Route/Router.php",
        "line": 324,
        "function": "main",
        "class": "OC\\AppFramework\\App",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/lib/base.php",
        "line": 1159,
        "function": "match",
        "class": "OC\\Route\\Router",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/index.php",
        "line": 25,
        "function": "handleRequest",
        "class": "OC",
        "type": "::"
      }
    ],
    "File": "/var/www/nextcloud/apps/files_lock/lib/Storage/LockWrapper.php",
    "Line": 82,
    "message": "Controller failed with OCP\\Lock\\ManuallyLockedException",
    "exception": "{\"class\":\"OCP\\Lock\\ManuallyLockedException\",\"message\":\"\\\"files/Notizen/Privat/Todo.md\\\" is locked, existing lock on file: files_lock/1ed743bc-1034-40ef-9711-3a5ab33e994c\",\"code\":0,\"file\":\"/var/www/nextcloud/apps/files_lock/lib/Storage/LockWrapper.php:82\",\"trace\":\"#0 /var/www/nextcloud/apps/files_lock/lib/Storage/LockWrapper.php(213): OCA\\FilesLock\\Storage\\LockWrapper->checkPermissions()\\n#1 /var/www/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php(150): OCA\\FilesLock\\Storage\\LockWrapper->file_put_contents()\\n#2 /var/www/nextcloud/lib/private/Files/View.php(1235): OC\\Files\\Storage\\Wrapper\\Wrapper->file_put_contents()\\n#3 /var/www/nextcloud/lib/private/Files/View.php(680): OC\\Files\\View->basicOperation()\\n#4 /var/www/nextcloud/lib/private/Files/Node/File.php(56): OC\\Files\\View->file_put_contents()\\n#5 /var/www/nextcloud/apps/notes/lib/Service/Note.php(174): OC\\Files\\Node\\File->putContent()\\n#6 /var/www/nextcloud/apps/notes/lib/Controller/NotesApiController.php(174): OCA\\Notes\\Service\\Note->setContent()\\n#7 /var/www/nextcloud/apps/notes/lib/Service/Util.php(25): OCA\\Notes\\Controller\\NotesApiController->{closure:OCA\\Notes\\Controller\\NotesApiController::update():164}()\\n#8 /var/www/nextcloud/apps/notes/lib/Controller/Helper.php(135): OCA\\Notes\\Service\\Util::retryIfLocked()\\n#9 /var/www/nextcloud/apps/notes/lib/Controller/NotesApiController.php(164): OCA\\Notes\\Controller\\Helper->handleErrorResponse()\\n#10 /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php(165): OCA\\Notes\\Controller\\NotesApiController->update()\\n#11 /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php(78): OC\\AppFramework\\Http\\Dispatcher->executeController()\\n#12 /var/www/nextcloud/lib/private/AppFramework/App.php(137): OC\\AppFramework\\Http\\Dispatcher->dispatch()\\n#13 /var/www/nextcloud/lib/private/Route/Router.php(324): OC\\AppFramework\\App::main()\\n#14 /var/www/nextcloud/lib/base.php(1159): OC\\Route\\Router->match()\\n#15 /var/www/nextcloud/index.php(25): OC::handleRequest()\\n#16 {main}\"}",
    "CustomMessage": "Controller failed with OCP\\Lock\\ManuallyLockedException"
  },
  "id": "REDACTED"
}