initial dmraid support

4 files changed, 87 insertions, 1 deletions

diff --git a/perl-install/fs/dmraid.pm b/perl-install/fs/dmraid.pm
new file mode 100644
index 000000000..1a0268014
--- /dev/null
+++ b/perl-install/fs/dmraid.pm
@@ -0,0 +1,55 @@
+package fs::dmraid; # $Id$
+
+use diagnostics;
+use strict;
+
+#-######################################################################################
+#- misc imports
+#-######################################################################################
+use common;
+use modules;
+use devices;
+use fs::type;
+use run_program;
+
+
+init() or log::l("dmraid::init failed");
+
+sub init() {
+    eval { modules::load('dm-mirror') };
+    devices::init_device_mapper();
+    if ($::isInstall) {
+	run_program::run('dmraid', '-ay');
+    }
+    1;
+}
+
+sub check {
+    my ($in) = @_;
+
+    $in->do_pkgs->ensure_binary_is_installed('dmraid', 'dmraid') or return;
+    init();
+    1;
+}
+
+sub pvs_and_vgs() {
+    map {
+	my @l = split(':');
+	{ pv => $l[0], format => $l[1], vg => $l[2], level => $l[3], status => $l[4] };
+    } run_program::get_stdout('dmraid', '-rcc');
+}
+
+sub vgs() {
+    map {
+	my $dev = "mapper/$_->{vg}";
+	my $vg = fs::subpart_from_wild_device_name("/dev/$dev");
+	add2hash($vg, { media_type => 'hd', prefix => $dev, bus => "dm_$_->{format}" });
+	$vg;
+    } grep { $_->{status} eq 'ok' } uniq_ { $_->{vg} } pvs_and_vgs();
+}
+
+sub pvs() {
+    map { $_->{pv} } grep { $_->{status} eq 'ok' } pvs_and_vgs();
+}
+
+1;
diff --git a/perl-install/fs/proc_partitions.pm b/perl-install/fs/proc_partitions.pm
index 1cb3acfd1..1d40840f5 100644
--- a/perl-install/fs/proc_partitions.pm
+++ b/perl-install/fs/proc_partitions.pm
@@ -59,6 +59,8 @@ sub read {
 sub compare {
     my ($hd) = @_;
 
+    $hd->{bus} =~ /^dm_/ and log::l("skipping /proc/partititions check for dmraid $hd->{device}"), return;
+
     my @l1 = partition_table::get_normal_parts($hd);
     my @l2 = grep { $_->{rootDevice} eq $hd->{device} } &read([$hd]);
 
diff --git a/perl-install/fsedit.pm b/perl-install/fsedit.pm
index 1ca3e1f3d..e2000b2b1 100644
--- a/perl-install/fsedit.pm
+++ b/perl-install/fsedit.pm
@@ -98,6 +98,31 @@ sub lvms {
     @lvms;
 }
 
+sub handle_dmraid {
+    my ($drives) = @_;
+
+    @$drives > 1 or return;
+
+    devices::make($_->{device}) foreach @$drives;
+
+    require fs::dmraid;
+
+    my @pvs = fs::dmraid::pvs();
+    my @vgs = fs::dmraid::vgs();
+    log::l(sprintf('dmraid: pvs = [%s], vgs = [%s]',
+		   join(' ', @pvs),
+		   join(' ', map { $_->{device} } @vgs)));
+
+    my @used_hds = map {
+	my $part = fs::get::device2part($_, $drives) or log::l("handle_dmraid: can't find $_ in known drives");
+	if_($part, $part);
+    } @pvs;
+
+    @$drives = difference2($drives, \@used_hds);
+
+    push @$drives, @vgs;
+}
+
 sub get_hds {
     my ($o_flags, $o_in) = @_;
     my $flags = $o_flags || {};
@@ -105,6 +130,9 @@ sub get_hds {
 
     my @drives = detect_devices::hds();
 
+    #- replace drives used in dmraid by the merged name
+    handle_dmraid(\@drives);
+
     foreach my $hd (@drives) {
 	$hd->{file} = devices::make($hd->{device});
 	$hd->{prefix} ||= $hd->{device};
diff --git a/perl-install/install2.pm b/perl-install/install2.pm
index aaca3a6dd..3b9d1ef5f 100644
--- a/perl-install/install2.pm
+++ b/perl-install/install2.pm
@@ -210,7 +210,8 @@ sub formatPartitions {
     raid::prepare_prefixed($o->{all_hds}{raids});
 
     #- needed by lilo
-    if (my @vgs = map { $_->{VG_name} } @{$o->{all_hds}{lvms}}) {
+    if (-d '/dev/mapper') {
+	my @vgs = map { $_->{VG_name} } @{$o->{all_hds}{lvms}};
 	cp_af("/dev/$_", "$::prefix/dev") foreach 'mapper', @vgs;
     }
 }