add API for LVM management

currently only list and create,
the list is in a format so that we can use it in an extjs tree

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

PVE/API2/Disks.pm

@@ -8,11 +8,16 @@ use PVE::Diskmanage;
 use HTTP::Status qw(:constants);
 use PVE::JSONSchema qw(get_standard_option);
 
+use PVE::API2::Disks::LVM;
+
 use PVE::RESTHandler;
 
 use base qw(PVE::RESTHandler);
 
-use Data::Dumper;
+__PACKAGE__->register_method ({
+   subclass => "PVE::API2::Disks::LVM",
+   path => 'lvm',
+});
 
 __PACKAGE__->register_method ({
     name => 'index',
@@ -42,6 +47,7 @@ __PACKAGE__->register_method ({
 	    { name => 'list' },
 	    { name => 'initgpt' },
 	    { name => 'smart' },
+	    { name => 'lvm' },
 	    ];
 
 	return $result;

PVE/API2/Disks/LVM.pm

@@ -0,0 +1,178 @@
+package PVE::API2::Disks::LVM;
+
+use strict;
+use warnings;
+
+use PVE::Storage::LVMPlugin;
+use PVE::Diskmanage;
+use PVE::JSONSchema qw(get_standard_option);
+use PVE::API2::Storage::Config;
+use PVE::Tools qw(lock_file);
+
+use PVE::RPCEnvironment;
+use PVE::RESTHandler;
+
+use base qw(PVE::RESTHandler);
+
+__PACKAGE__->register_method ({
+    name => 'index',
+    path => '',
+    method => 'GET',
+    proxyto => 'node',
+    protected => 1,
+    permissions => {
+	check => ['perm', '/', ['Sys.Audit', 'Datastore.Audit'], any => 1],
+    },
+    description => "List LVM Volume Groups",
+    parameters => {
+	additionalProperties => 0,
+	properties => {
+	    node => get_standard_option('pve-node'),
+	},
+    },
+    returns => {
+	type => 'object',
+	properties => {
+	    leaf => {
+		type => 'boolean',
+	    },
+	    children => {
+		type => 'array',
+		items => {
+		    type => "object",
+		    properties => {
+			leaf => {
+			    type => 'boolean',
+			},
+			name => {
+			    type => 'string',
+			    description => 'The name of the volume group',
+			},
+			size => {
+			    type => 'integer',
+			    description => 'The size of the volume group in bytes',
+			},
+			free => {
+			    type => 'integer',
+			    description => 'The free bytes in the volume group',
+			},
+			children => {
+			    optional => 1,
+			    type => 'array',
+			    description => 'The underlying physical volumes',
+			    items =>  {
+				type => 'object',
+				properties => {
+				    leaf => {
+					type => 'boolean',
+				    },
+				    name => {
+					type => 'string',
+					description => 'The name of the physical volume',
+				    },
+				    size => {
+					type => 'integer',
+					description => 'The size of the physical volume in bytes',
+				    },
+				    free => {
+					type => 'integer',
+					description => 'The free bytes in the physical volume',
+				    },
+				},
+			    },
+			},
+		    },
+		},
+	    },
+	},
+    },
+    code => sub {
+	my ($param) = @_;
+
+	my $result = [];
+
+	my $vgs = PVE::Storage::LVMPlugin::lvm_vgs(1);
+
+	foreach my $vg_name (sort keys %$vgs) {
+	    my $vg = $vgs->{$vg_name};
+	    $vg->{name} = $vg_name;
+	    $vg->{leaf} = 0;
+	    foreach my $pv (@{$vg->{pvs}}) {
+		$pv->{leaf} = 1;
+	    }
+	    $vg->{children} = delete $vg->{pvs};
+	    push @$result, $vg;
+	}
+
+	return {
+	    leaf => 0,
+	    children => $result,
+	};
+    }});
+
+__PACKAGE__->register_method ({
+    name => 'create',
+    path => '',
+    method => 'POST',
+    proxyto => 'node',
+    protected => 1,
+    permissions => {
+	check => ['perm', '/', ['Sys.Modify', 'Datastore.Allocate']],
+    },
+    description => "Create an LVM Volume Group",
+    parameters => {
+	additionalProperties => 0,
+	properties => {
+	    node => get_standard_option('pve-node'),
+	    name => get_standard_option('pve-storage-id'),
+	    device => {
+		type => 'string',
+		description => 'The block device you want to create the volume group on',
+	    },
+	    add_storage => {
+		description => "Configure storage using the Volume Group",
+		type => 'boolean',
+		optional => 1,
+		default => 0,
+	    },
+	},
+    },
+    returns => { type => 'string' },
+    code => sub {
+	my ($param) = @_;
+
+	my $rpcenv = PVE::RPCEnvironment::get();
+	my $user = $rpcenv->get_user();
+
+	my $name = $param->{name};
+	my $dev = $param->{device};
+	my $node = $param->{node};
+
+	$dev = PVE::Diskmanage::verify_blockdev_path($dev);
+	die "device $dev is already in use\n" if PVE::Diskmanage::disk_is_used($dev);
+
+	my $worker = sub {
+	    my $res = lock_file('/run/lock/pve-diskmanage.lck', undef, sub {
+		PVE::Storage::LVMPlugin::lvm_create_volume_group($dev, $name);
+
+		if ($param->{add_storage}) {
+		    my $storage_params = {
+			type => 'lvm',
+			vgname => $name,
+			storage => $name,
+			content => 'rootdir,images',
+			shared => 0,
+			nodes => $node,
+		    };
+
+		    PVE::API2::Storage::Config->create($storage_params);
+		}
+	    });
+
+	    die "$@" if $@;
+	};
+
+	return $rpcenv->fork_worker('lvmcreate', $name, $user, $worker);
+    }});
+
+1;

PVE/API2/Disks/Makefile

@@ -0,0 +1,6 @@
+
+SOURCES= LVM.pm
+
+.PHONY: install
+install:
+	for i in ${SOURCES}; do install -D -m 0644 $$i ${DESTDIR}${PERLDIR}/PVE/API2/Disks/$$i; done

PVE/API2/Makefile

@@ -4,3 +4,4 @@
 install:
 	install -D -m 0644 Disks.pm ${DESTDIR}${PERLDIR}/PVE/API2/Disks.pm
 	make -C Storage install
+	make -C Disks install