Failing to move files across filesystem boundaries [in a docker instance]

[perllaghu]

Situation:

• jupyterlab server running as a docker container [in a cluster]
• filesystem content is mounted from an external NFS server:
  • /home/joyan ($HOME) is the users home directory
  • /home/joyvan/shared-data is mounted in top of that

I can happily "delete" files from $HOME, and any sub-directory within that mount

"Deleting" /home/joyvan/shared-data/untitled.txt, however, throws the following error:

[W 2026-01-28 10:05:10.703 ServerApp] delete /shared-data/untitled.txt
[ServerApp | WARNING] delete /shared-data/untitled.txt
[W 2026-01-28 10:05:10.737 ServerApp] wrote error: "send2trash failed: [Errno 13] Permission denied: ''"
    Traceback (most recent call last):
[ServerApp | WARNING] wrote error: "send2trash failed: [Errno 13] Permission denied: ''"
    Traceback (most recent call last):
      File "/opt/conda/lib/python3.13/site-packages/send2trash/plat_gio.py", line 17, in send2trash
        f.trash(cancellable=None)
      File "/opt/conda/lib/python3.13/site-packages/send2trash/plat_gio.py", line 17, in send2trash
        f.trash(cancellable=None)
        ~~~~~~~^^^^^^^^^^^^^^^^^^
    gi.repository.GLib.GError: g-io-error-quark: Unable to trash file /home/jovyan/shared-data/untitled.txt across filesystem boundaries (15)
        ~~~~~~~^^^^^^^^^^^^^^^^^^
    gi.repository.GLib.GError: g-io-error-quark: Unable to trash file /home/jovyan/shared-data/untitled.txt across filesystem boundaries (15)

    The above exception was the direct cause of the following exception:

    Traceback (most recent call last):
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/filemanager.py", line 1032, in delete_file
        send2trash(os_path)
        ~~~~~~~~~~^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/send2trash/plat_gio.py", line 22, in send2trash
        raise TrashPermissionError("") from e
    send2trash.exceptions.TrashPermissionError: [Errno 13] Permission denied: ''

    The above exception was the direct cause of the following exception:

    Traceback (most recent call last):
      File "/opt/conda/lib/python3.13/site-packages/tornado/web.py", line 1859, in _execute
        result = await result
                 ^^^^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
        return await out
               ^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/handlers.py", line 336, in delete
        await ensure_async(cm.delete(path))
      File "/opt/conda/lib/python3.13/site-packages/jupyter_core/utils/__init__.py", line 214, in ensure_async
        result = await obj
                 ^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/manager.py", line 898, in delete
        await self.delete_file(path)
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/filemanager.py", line 1034, in delete_file
        raise web.HTTPError(400, "send2trash failed: %s" % e) from e
    tornado.web.HTTPError: HTTP 400: Bad Request (send2trash failed: [Errno 13] Permission denied: '')

    The above exception was the direct cause of the following exception:

    Traceback (most recent call last):
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/filemanager.py", line 1032, in delete_file
        send2trash(os_path)
        ~~~~~~~~~~^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/send2trash/plat_gio.py", line 22, in send2trash
        raise TrashPermissionError("") from e
    send2trash.exceptions.TrashPermissionError: [Errno 13] Permission denied: ''

    The above exception was the direct cause of the following exception:

    Traceback (most recent call last):
      File "/opt/conda/lib/python3.13/site-packages/tornado/web.py", line 1859, in _execute
        result = await result
                 ^^^^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
        return await out
               ^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/handlers.py", line 336, in delete
        await ensure_async(cm.delete(path))
      File "/opt/conda/lib/python3.13/site-packages/jupyter_core/utils/__init__.py", line 214, in ensure_async
        result = await obj
                 ^^^^^^^^^
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/manager.py", line 898, in delete
        await self.delete_file(path)
      File "/opt/conda/lib/python3.13/site-packages/jupyter_server/services/contents/filemanager.py", line 1034, in delete_file
        raise web.HTTPError(400, "send2trash failed: %s" % e) from e
    tornado.web.HTTPError: HTTP 400: Bad Request (send2trash failed: [Errno 13] Permission denied: '')
[ServerApp | WARNING] 400 DELETE /<path>/api/contents/shared-data/untitled.txt?1769594710684 (f62f69fde70242e9bdf565f3fd771a67@129.215.128.191) 42.82ms referer=https://<server>/<path>/lab/tree/shared-data     

I'm guessing that try/except in plat_other.py isn't recognising this error?