--- trunk/vz-clone.pl	2007/10/04 18:54:41	24
+++ trunk/vz-clone.pl	2009/02/27 18:37:34	62
@@ -1,17 +1,56 @@
 #!/usr/bin/perl -w
 
 use strict;
-use Shell qw/rsync vzlist lvcreate mount umount lvremove which lvdisplay mke2fs/;
+use Shell qw/rsync vzlist lvcreate mount umount lvremove which lvdisplay mke2fs vzctl/;
 
 my $vz   = '/vz';
 my $conf = '/etc/vz/conf';
 
 my $snap_size = '100M';
 
-my $VEID = shift @ARGV || die "Usage: $0 VEID\n\n",vzlist;
+my ( $action, $VEID ) = @ARGV;
+
+my $use_snapshot = 0;
+
+my $valid_actions = 'create|mount|umount|destroy';
+
+die "Usage: $0 ($valid_actions) VEID\n\n",vzlist unless $VEID && $action && $action =~ m/($valid_actions)/;
 
 my $CVEID = "10$VEID";
 
+sub vzctl_stop {
+	my $veid = shift;
+	my $vzlist = vzlist();
+	if ( $vzlist =~ m/$veid/ ) {
+		print "stop $veid\n";
+		vzctl('stop', $veid);
+	}
+}
+
+if ( $action eq 'create' ) {
+	vzctl_stop( $CVEID );
+} elsif ( $action eq 'destroy' ) {
+	vzctl_stop( $VEID );
+}
+
+
+if ( $action =~ m/(create|umount|destroy)/ ) {
+	my $clone;
+	open(my $m, '-|', 'mount') || die "can't open mount: $!";
+	while(<$m>) {
+		my @v = split(/\s+/,$_);
+		if ( $v[2] =~ m!/(private|root)/$CVEID$! && $v[5] =~ m/bind/ ) {
+			umount( $v[2] );
+		} elsif ( $v[2] =~ m!vz-clone-$CVEID$! ) {
+			$clone = $v[2];
+		}
+	}
+	umount( $clone ) if $clone;
+
+	exit if $action eq 'umount';
+}
+
+
 my $orig_conf = "/etc/vz/conf/$VEID.conf";
 
 die "$VEID config $orig_conf doesn't exist\n" unless -e $orig_conf;
@@ -44,8 +83,9 @@
 
 sub copy_files {
 	my ( $from, $to ) = @_;
+	return if $action ne 'create';
 	warn "rsync $from -> $to\n";
-	rsync('-raSHAD', "$from/", "$to/" );
+	rsync('-raSHAD', '--delete', "$from/", "$to/" );
 }
 
 if ( $vz_lv ) {
@@ -53,7 +93,7 @@
 	my ( $vz_lv_path, $vz_lv_name ) = ( $1, $2 ) if ( $vz_lv =~ m!^(.+)/([^/]+)$! );
 
 	my $snap = $vz_lv_name . '-snap';
-	my $clone = "$vz_lv_name-clone-$CVEID";
+	my $clone = "vz-clone-$CVEID";
 
 	sub do_mount {
 		my ( $from, $to ) = @_;
@@ -76,17 +116,21 @@
 		mount( '--bind', $from, $to );
 	}
 
-	print "Creating $snap_size snapshot $snap from $vz_lv\n";
-	lvcreate( '--size', $snap_size, '--snapshot', '--name', $snap, $vz_lv );
+	if ( $use_snapshot ) {
 
-	do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );
+		print "Creating $snap_size snapshot $snap from $vz_lv\n";
+		lvcreate( '--size', $snap_size, '--snapshot', '--name', $snap, $vz_lv );
+
+		do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );
+	
+	}
 
-	my $clone_size = fs_quota( $VEID ) . 'k';
 	my $vg_name = $1 if ( $vz_lv_path =~ m!/([^/]+)/*$! );
 
 	if ( lvdisplay( "$vz_lv_path/$clone" ) ) {
 		warn "using existing $vz_lv_path/$clone\n";
 	} else {
+		my $clone_size = fs_quota( $VEID ) . 'k';
 		print "Creating LV $clone ($clone_size bytes) in VG $vg_name for $VEID clone filesystem\n";
 		lvcreate( '--size', $clone_size, '--name', $clone, $vg_name );
 		mke2fs( '-m', 0, '-j', "$vz_lv_path/$clone" );
@@ -100,27 +144,40 @@
 	mount_bind( "/tmp/$clone/private", "$vz/private/$CVEID" );
 	mount_bind( "/tmp/$clone/root", "$vz/root/$CVEID" );
 
-	copy_files( "/tmp/$snap/private/$VEID", "$vz/private/$CVEID" );
+	if ( $use_snapshot ) {
+
+		copy_files( "/tmp/$snap/private/$VEID", "/tmp/$clone/private" );
 
-	print "Cleanup\n";
+		print "Cleanup\n";
 
-	#umount( "$vz_lv_path/$clone" );
-	umount( "$vz_lv_path/$snap" );
+		#umount( "$vz_lv_path/$clone" );
+		umount( "$vz_lv_path/$snap" );
 
-	lvremove( '-f', "$vz_lv_path/$snap" );
+		lvremove( '-f', "$vz_lv_path/$snap" );
+
+	} else {
+		copy_files( "$vz/private/$VEID", "/tmp/$clone/private" );
+
+	}
 
 } else {
 
 	copy_files( "$vz/private/$VEID", "$vz/private/$CVEID" );
 }
 
+exit if $action eq 'mount';
+
 my $note = "# modified by $0\n";
 
+my $ve_clone_ip;
+
 sub fix_ip {
 	my $ip = shift;
 	$ip =~ s/['"]//g;
-	$ip =~ s/^\d+\./10./;
+#	$ip =~ s/^\d+\./10./;
+	$ip =~ s/^\d+\.\d+\./192.168./;
 	warn "$CVEID new IP number: $ip\n";
+	$ve_clone_ip = $ip;
 	return $note . qq{IP_ADDRESS="$ip"};
 }
 
@@ -135,10 +192,10 @@
 open(my $o, '<', "$conf/$VEID.conf")  || die "can't open $conf/$VEID.conf: $!";
 open(my $n, '>', "$conf/$CVEID.conf") || die "can't open $conf/$CVEID.conf: $!";
 while(<$o>) {
-	s!^HOSTNAME=(.*)$!fix_hostname($1)!ie;
-	s!^IP_ADDRESS=(.*)$!fix_ip($1)!ie;
-	s!^(ONBOOT=).*$!# modified by $0\n$1"no"!i;
+	s{^HOSTNAME=(.*)$}{fix_hostname($1)}ie;
+	s{^IP_ADDRESS=(.*)$}{fix_ip($1)}ie;
+	s{^(ONBOOT=).*$}{# modified by $0\n$1"no"}i;
 	print $n $_;
 }
 
-print "\nPlease review config file: $conf/$CVEID.conf\nAdd NAT for new VE with: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE\nStart clone of $VEID with: vzctl start $CVEID\n"
+print "\nPlease review config file: $conf/$CVEID.conf\nAdd NAT for new VE with: iptables -t nat -A POSTROUTING -s $ve_clone_ip -o eth0 -j MASQUERADE\nStart clone of $VEID with: vzctl start $CVEID\n"