# HG changeset patch
# User Heiko Schlittermann <hs@schlittermann.de>
# Date 1264897052 -3600
# Node ID bdc967bf50d29e21ee910406833a8a79541586c4
# Parent  1c7e99693439ae8c5004fae8a5658132c6550dcf
[savepoint]

diff -r 1c7e99693439 -r bdc967bf50d2 is
--- a/is	Fri Jan 29 00:35:46 2010 +0100
+++ b/is	Sun Jan 31 01:17:32 2010 +0100
@@ -8,13 +8,17 @@
 use Getopt::Long;
 use Pod::Usage;
 use File::Basename;
+use Data::Dumper;
 
 use lib "lib";
 use SI::system;
+use SI::ptable;
+use SI::lvm;
 
 my $ME = basename $0;
 my $opt_base = "..";
 my $opt_src = undef;
+my $opt_verbose = undef;
 
 
 MAIN: {
@@ -22,19 +26,69 @@
     GetOptions(
 	"base=s" => \$opt_base,
 	"src=s"	=> \$opt_src,
+	"help" => sub { pod2usage(-verbose => 1, exit => 0) },
+	"man" => sub { pod2usage(-verbose => 2, exit => 0) },
+	"verbose" => \$opt_verbose,
     ) or pod2usage;
 		
     my $id = SI::system::id();
 
     # now check if we find a suitable image
-    my $src = defined $opt_src ? $opt_src : "$opt_base/image-$id";
+    my $src = defined $opt_src ? $opt_src : "image-$id";
+    $src = "$opt_base/$src" if $src !~ /\//;
+
     -d $src or die "$ME: $src: $!\n";
 
     our $VAR1;
     do "$src/info/devices";
     my %devices = %$VAR1;
 
-    die %devices;
+#    SI::ptable::restore(%devices);
+#    SI::ptable::mkfs(%devices);
+    SI::lvm::pvcreate(%devices);
+    SI::lvm::vgcfgrestore("$src/lvm/vg.*", %devices);
+
+
+    exit;
+    die Dumper \%devices;
 
 }
+
+__END__
+
+=head1 NAME
+
+is - revert si (recover from system image)
+
+=head1 SYNOPSIS
+
+  is [--base=BASE] [--source=SOURCE]
+  is --help
+  is --man
+
+=head1 DESCRIPTION
+
+This B<is> tool installs the image you saved with B<si>.
+
+=head1 OPTIONS
+
+=over
+
+=item B<-b>|B<--base> I<base>
+
+The directory where to look for the images. Each image should have 
+a unique subdirectory there. (default: I<..>)
+
+=item B<-s>|B<--source> I<source>
+
+The source of the image. If the source does not contain a slash ("/"), the
+it is expected to be a subdirectory of the base (see option B<--base>).
+
+Normally the source directories are named by the MAC address of the system. 
+For convenience a symbolic link with the hostname of the saved systems may be
+in place. (default: mac address)
+
+=back
+
+=cut
 # vim:sts=4 sw=4 aw ai si:
diff -r 1c7e99693439 -r bdc967bf50d2 lib/SI/lvm.pm
--- a/lib/SI/lvm.pm	Fri Jan 29 00:35:46 2010 +0100
+++ b/lib/SI/lvm.pm	Sun Jan 31 01:17:32 2010 +0100
@@ -7,6 +7,7 @@
 use IO::File;
 use Cwd qw(abs_path);
 use File::Basename;
+use feature "switch";
 
 use SI::tools;
 
@@ -67,6 +68,49 @@
     run("vgcfgbackup -f '$file' >/dev/null");
 }
 
+sub pvcreate(\%) {
+    my $devs = shift;
+    foreach my $volume ( keys %{$devs->{volume}} ) {
+	my $v = $devs->{volume}{$volume};
+	next if $v->{origin} ne "ptable"
+	    or not defined $v->{type}
+	    or $v->{type} !~ /^lvm/i;
+	run("pvcreate -y -ff -u $v->{uuid} $volume");
+    }
+}
+
+sub vgcfgrestore($\%) {
+    my @cfgs = glob($_[0]);
+    my $devs = shift;
+
+    foreach (@cfgs) {
+	my $vg = basename($_);
+	next if $vg eq "vg.*";
+	print $vg, "\n";
+    }
+}
+
+sub mkfs(\%) {
+    my $devs = shift;
+    foreach my $volume ( keys %{$devs->{volume}} ) {
+	my $v = $devs->{volume}{$volume};
+	next if $v->{origin} ne "lvm"
+	    or not defined $v->{type};
+	
+	my $label = default("" => $v->{label});
+	my $uuid = default("" => $v->{uuid});
+
+	given($v->{type}) {
+	    when(/ext/) {
+		run("mkfs -t $v->{type} -L '$label' -U '$uuid' $volume");
+	    };
+	    when(/swap/) {
+		run("mkswap -L '$label' -U '$uuid' $volume");
+	    };
+	}
+    }
+}
+
 1;
 
 # vim:sts=4 sw=4 aw ai si:
diff -r 1c7e99693439 -r bdc967bf50d2 lib/SI/ptable.pm
--- a/lib/SI/ptable.pm	Fri Jan 29 00:35:46 2010 +0100
+++ b/lib/SI/ptable.pm	Sun Jan 31 01:17:32 2010 +0100
@@ -7,6 +7,7 @@
 use File::Find;
 use File::Basename;
 use IO::File;
+use feature "switch";
 
 use SI::tools;
 $ENV{LC_ALL} = "C";
@@ -65,6 +66,46 @@
 
     return;
 }
+
+sub restore(\%) {
+    my $devs = shift;
+
+    foreach my $disk (keys %{$devs->{disk}}) {
+	verbose("restoring partition table of $disk\n");
+	die "I won't use the disk ($disk) I'm running on!" 
+	    if (stat $0)[0] ~~ [ map { (stat)[6] } map { "/dev/" . basename dirname $_ } glob ("/sys/block/" . basename($disk) . "/*/partition")];
+
+	    my $sfdisk = new IO::File "|sfdisk $disk >/dev/null"
+		or die "Can't open |sfdisk $disk: $!\n";
+	    print {$sfdisk} @{$devs->{disk}{$disk}{pt}};
+	    $sfdisk->close or die $? >> 8;
+	    run("partprobe $disk");
+    }
+}
+
+sub mkfs(\%) {
+    my $devs = shift;
+    foreach my $volume ( keys %{$devs->{volume}} ) {
+	my $v = $devs->{volume}{$volume};
+	next if $v->{origin} ne "ptable";
+	warn $volume, "\n";
+	next if not defined $v->{type};
+	given ($v->{type}) {
+	    when(/ext\d/) {
+		my $label = defined $v->{label} ? $v->{label} : "";
+		my $uuid = defined $v->{uuid} ? $v->{uuid} : "";
+		run("mkfs -t $v->{type} -L '$label' -U '$uuid' $volume");
+	    };
+	    when("swap") {
+		my $label = defined $v->{label} ? $v->{label} : "";
+		my $uuid = defined $v->{uuid} ? $v->{uuid} : "";
+		run("mkswap -L '$label' -U '$uuid' $volume");
+	    };
+	};
+
+    }
+
+}
 1;
 
 # vim:sts=4 sw=4 aw ai si:
diff -r 1c7e99693439 -r bdc967bf50d2 lib/SI/tools.pm
--- a/lib/SI/tools.pm	Fri Jan 29 00:35:46 2010 +0100
+++ b/lib/SI/tools.pm	Sun Jan 31 01:17:32 2010 +0100
@@ -8,7 +8,7 @@
 use Data::Dumper;
 use base "Exporter";
 
-our @EXPORT = qw(&run &verbose &find_by_devid &cat &barf);
+our @EXPORT = qw(&run &verbose &find_by_devid &cat &barf &default);
 
 sub run(@) {
     system(@_);
@@ -16,6 +16,10 @@
       if $?;
 }
 
+sub default($$) {
+    return defined $_[1] ? $_[1] : $_[0];
+}
+
 sub barf(@) { die Dumper @_ }
 
 sub cat($) {