stratis-pre-1 failing on daily-iso and rawhide with "into_dbus_python._errors.IntoDPUnexpectedValueError: expected a list for an array but found something else: frozenset({'/dev/vda1'})"

[rvykydal]

https://redhat.atlassian.net/browse/INSTALLER-4935

In daily run since yesterday https://github.com/rhinstaller/kickstart-tests/actions/runs/35806002602
Reproducible running the kstest locally.

The pre-creation of stratis in %pre script fails, log:

stratis encountered an unexpected error during execution. Please report the error and include in your report the stack trace shown below.
Traceback (most recent call last):
  File "/usr/lib/python3.15/site-packages/dbus_python_client_gen/_invokers.py", line 350, in dbus_func
    xformed_args = func(args)
  File "/usr/lib/python3.15/site-packages/into_dbus_python/_xformer.py", line 334, in the_func
    return [f(a) for (f, a) in zip(funcs, objects, strict=True)]
            ~^^^
  File "/usr/lib/python3.15/site-packages/into_dbus_python/_xformer.py", line 56, in the_func
    raise err
  File "/usr/lib/python3.15/site-packages/into_dbus_python/_xformer.py", line 51, in the_func
    return func(expr, variant=variant)
  File "/usr/lib/python3.15/site-packages/into_dbus_python/_xformer.py", line 158, in the_array_func
    raise IntoDPUnexpectedValueError(
    ...<2 lines>...
    )
into_dbus_python._errors.IntoDPUnexpectedValueError: expected a list for an array but found something else: frozenset({'/dev/vda1'})

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

Traceback (most recent call last):
  File "/usr/lib/python3.15/site-packages/stratis_cli/_main.py", line 49, in the_func
    namespace.func(namespace)
    ~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/usr/lib/python3.15/site-packages/stratis_cli/_parser/_parser.py", line 148, in wrapped_func
    func(*args)
    ~~~~^^^^^^^
  File "/usr/lib/python3.15/site-packages/stratis_cli/_actions/_pool.py", line 237, in create_pool
    raise err  # pragma: no cover
    ^^^^^^^^^
  File "/usr/lib/python3.15/site-packages/stratis_cli/_actions/_pool.py", line 203, in create_pool
    Manager.Methods.CreatePool(
    ~~~~~~~~~~~~~~~~~~~~~~~~~~^
        proxy,
        ^^^^^^
    ...<22 lines>...
        },
        ^^
    )
    ^
  File "/usr/lib/python3.15/site-packages/stratis_cli/_actions/_data.py", line 134, in new_method
    return orig_method(proxy, args)
  File "/usr/lib/python3.15/site-packages/dbus_python_client_gen/_invokers.py", line 358, in dbus_func
    raise DPClientMarshallingError(
        err_msg, interface_name, signature, args
    ) from err
dbus_python_client_gen._errors.DPClientMarshallingError: Failed to format arguments (fedora, frozenset({'/dev/vda1'}), [], [], (True, 134217728), (True, <IntegrityTagSpec.B512: '512b'>), (True, True)) according to signature "sasa((bu)s)a((bu)ss)(bt)(bs)(bb)" for method "CreatePool" belonging to interface "org.storage.stratis3.Manager.r9"

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

Traceback (most recent call last):
  File "/usr/bin/stratis", line 33, in <module>
    main()
    ~~~~^^
  File "/usr/bin/stratis", line 30, in main
    return run()(sys.argv[1:])
           ~~~~~^^^^^^^^^^^^^^
  File "/usr/lib/python3.15/site-packages/stratis_cli/_main.py", line 70, in the_func
    handle_error(err)
    ~~~~~~~~~~~~^^^^^
  File "/usr/lib/python3.15/site-packages/stratis_cli/_error_reporting.py", line 393, in handle_error
    raise err
  File "/usr/lib/python3.15/site-packages/stratis_cli/_main.py", line 65, in the_func
    raise StratisCliActionError(command_line_args, namespace) from err
stratis_cli._errors.StratisCliActionError: Action selected by command-line arguments ['pool', 'create', 'fedora', '/dev/vda1'] which were parsed to Namespace(print_all_help=None, propagate=False, unhyphenated_uuids=False, func=<function add_subcommand.<locals>.wrap_func.<locals>.wrapped_func at 0x7fd2ef265b10>, key_desc=None, post_parser=<class 'stratis_cli._parser._pool.CreateOptions'>, pool_name='fedora', blockdevs=['/dev/vda1'], no_overprovision=False, clevis=None, integrity=<stratis_cli._parser._pool.IntegrityOptions object at 0x7fd2f0611a90>) failed
Execution failed:
Most likely you specified a pool which does not exist.
Execution failed:
Most likely you specified a pool which does not exist.
mount: /mnt/test-home: fsconfig() failed: /dev/stratis/fedora/home: Can't lookup blockdev.
       dmesg(1) may have more information after failed mount system call.
umount: /mnt/test-home: not mounted.

Journal:
jctl.log

[rvykydal]

Hello @vojtechtrefny, any idea?

[vojtechtrefny]

It's a stratis bug, cockpit already reported it: https://bugzilla.redhat.com/show_bug.cgi?id=2539473