my @l2m_io = (undef, @io[1..$#io]);
pipe(my $startq, $l2m_io[0]) or die "pipe: $!";
$self->wq_do('query_prepare', \@l2m_io, $lei);
my @l2m_io = (undef, @io[1..$#io]);
pipe(my $startq, $l2m_io[0]) or die "pipe: $!";
$self->wq_do('query_prepare', \@l2m_io, $lei);