lib/PublicInbox/V2Writable.pm | 10 +++++++---
 t/v2reindex.t                 |  3 +--

diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index c8869bda3cf669b1de9428a570ce6ea0c5f6e2f0..51723e55ffb44662087f349a41a69a30fb36c5c1 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -204,9 +204,13 @@ 		$self->{skel} = $skel;
 
 		# need to create all parts before initializing msgmap FD
 		my $max = $self->{partitions} - 1;
-		@{$self->{idx_parts}} = map {
-			PublicInbox::SearchIdxPart->new($self, $_, $skel);
-		} (0..$max);
+
+		# idx_parts must be visible to all forked processes
+		my $idx = $self->{idx_parts} = [];
+		for my $i (0..$max) {
+			push @$idx,
+			     PublicInbox::SearchIdxPart->new($self, $i, $skel);
+		}
 
 		# Now that all subprocesses are up, we can open the FD for SQLite:
 		$skel->_msgmap_init->{dbh}->begin_work;
diff --git a/t/v2reindex.t b/t/v2reindex.t
index b9540e4abce4e3087549da720077d68644ef68b4..bf44fa0ad7bc291766b7bf1f9f53a4c9a2d6bb98 100644
--- a/t/v2reindex.t
+++ b/t/v2reindex.t
@@ -30,9 +30,8 @@ 		Date => 'Fri, 02 Oct 1993 00:00:00 +0000',
 	],
 	body => "hello world\n",
 );
-
+local $ENV{NPROC} = 2;
 my $im = PublicInbox::V2Writable->new($ibx, 1);
-$im->{parallel} = 0;
 foreach my $i (1..10) {
 	$mime->header_set('Message-Id', "<$i\@example.com>");
 	ok($im->add($mime), "message $i added");