- don't write /etc/mdadm.conf when no raid

- use option "auto=yes" in mdadm.conf to ensure mdadm will create /dev/mdX devices when needed
  (those are not there when using udev and neither kernel raid autostart nor initrd created the raid)

1 files changed, 3 insertions, 1 deletions

diff --git a/perl-install/raid.pm b/perl-install/raid.pm
index de74f55ef..4b4cb8109 100644
--- a/perl-install/raid.pm
+++ b/perl-install/raid.pm
@@ -221,11 +221,13 @@ sub inactivate_all() {
 sub prepare_prefixed {
     my ($raids) = @_;
 
+    @$raids or return;
+
     my @devices = uniq(map { devices::make($_->{device}) } map { @{$_->{disks}} } @$raids);
 
     output("$::prefix/etc/mdadm.conf",
 	   join(' ', 'DEVICE', @devices) . "\n",
-	   map { "ARRAY " . devices::make($_->{device}) . " UUID=" . $_->{UUID} . "\n" } @$raids);
+	   map { "ARRAY " . devices::make($_->{device}) . " UUID=$_->{UUID} auto=yes\n" } @$raids);
 }
 
 sub get_md_info {