Nextcloud App Fails to Launch When Using Host Path Storage – Works with ixVolume

I’m running TrueNAS SCALE 25.04.0 and trying to deploy the Nextcloud app from the official catalog.

When I deploy it using ixVolume storage, the app launches successfully.

However, when I change the storage configuration to use a host path, the app fails to start with the following error:
[EFAULT] Failed 'up' action for 'nextcloud' app. Please check /var/log/app_lifecycle.log for more details
Here’s the full traceback:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/middlewared/job.py", line 515, in run
    await self.future
  File "/usr/lib/python3/dist-packages/middlewared/job.py", line 562, in __run_body
    rv = await self.middleware.run_in_thread(self.method, *args)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 599, in run_in_thread
    return await self.run_in_executor(io_thread_pool_executor, method, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 596, in run_in_executor
    return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/service/crud_service.py", line 294, in nf
    rv = func(*args, **kwargs)
         ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/api/base/decorator.py", line 96, in wrapped
    result = func(*args)
             ^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/plugins/apps/crud.py", line 148, in do_create
    return self.create_internal(job, app_name, version, data['values'], complete_app_details)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/plugins/apps/crud.py", line 193, in create_internal
    raise e from None
  File "/usr/lib/python3/dist-packages/middlewared/plugins/apps/crud.py", line 186, in create_internal
    compose_action(app_name, version, 'up', force_recreate=True, remove_orphans=True)
  File "/usr/lib/python3/dist-packages/middlewared/plugins/apps/compose_utils.py", line 61, in compose_action
    raise CallError(err_msg)
middlewared.service_exception.CallError: [EFAULT] Failed 'up' action for 'nextcloud' app. Please check /var/log/app_lifecycle.log for more details

I have already verified that the dataset used for the host path has the following ACL, User: apps, Permissions: Allow | Full Control

Despite this, the app consistently fails to deploy when using the host path. Included is a copy of the app lifecycle log with the relevant logs. Any help will be greatly appreaciated.
app_lifecycle.log.txt (3.5 KB)

Postgres needs the user/group 999 added to the permissions of that folder/dataset, so you’ll need to add that user/group to it.