(In reply to Arvin Schnell from comment #2) > Maybe the chunk-size is set in the AutoYaST profile? Unfortunately > the logs are missing on openQA. This is not an autoyast driven installation, it's a regular GUI driven one (though using the REST-API to control yast, not the actually Keyboard/Mouse inputs) So it might, in the end, still be a problem with the test code: sub add_raid { my ($self, $args) = @_; my $raid_level = $args->{raid_level}; my $device_selection_step = $args->{device_selection_step}; my $chunk_size = $args->{chunk_size}; $self->get_expert_partitioner_page()->select_raid(); $self->get_expert_partitioner_page()->press_add_raid_button(); $self->get_raid_type_page()->set_raid_level($raid_level); foreach my $device (@{$args->{devices}}) { $self->get_raid_type_page()->add_device($device); } $self->get_raid_type_page()->press_next(); $self->get_raid_options_page()->select_chunk_size($chunk_size) if $chunk_size; $self->get_raid_options_page()->press_next(); $self->add_raid_partition($args->{partition}); } Question will probably we how the UI handles that when clicking through it as regular user