This patch will include storage asynchronous replication.

It is possible to synchronise a volume to an other node in a defined interval.
So if a node fail there will be an copy of the volumes from a VM
on an other node.
With this copy it is possible to start the VM on this node.

PVE/API2/StorageReplication.pm

@@ -0,0 +1,49 @@
+package PVE::API2::StorageReplication;
+
+use warnings;
+use strict;
+
+use PVE::JSONSchema qw(get_standard_option);
+use PVE::ReplicationTools;
+
+use PVE::RESTHandler;
+
+use base qw(PVE::RESTHandler);
+
+__PACKAGE__->register_method ({
+    name => 'list',
+    path => 'list',
+    method => 'GET',
+    description => "List of all replication jobs.",
+    permissions => {
+	user => 'all',
+    },
+    protected => 1,
+    proxyto => 'node',
+    parameters => {
+	additionalProperties => 0,
+	properties => {
+	    node => get_standard_option('pve-node'),
+	    nodes => get_standard_option('pve-node-list' ,
+					 {description => "Notes where the jobs is located.",
+					  optional => 1}),
+	},
+    },
+    returns => { type => 'object' },
+    code => sub {
+	my ($param) = @_;
+
+	if ($param->{nodes}) {
+	    foreach my $node (PVE::Tools::split_list($param->{nodes})) {
+		die "Node: $node does not exists.\n" if
+		    !PVE::Cluster::check_node_exists($node);
+	    }
+	}
+
+	my $nodes = $param->{nodes} ?
+	    $param->{nodes} : $param->{node};
+
+	return PVE::ReplicationTools::get_all_jobs($nodes);
+}});
+
+1;