PVE/API2/VZDump.pm

   1 package PVE::API2::VZDump;
   2
   3 use strict;
   4 use warnings;
   5 use PVE::Exception qw(raise_param_exc);
   6 use PVE::Tools qw(extract_param);
   7 use PVE::Cluster qw(cfs_register_file cfs_read_file);
   8 use PVE::INotify;
   9 use PVE::RPCEnvironment;
  10 use PVE::AccessControl;
  11 use PVE::JSONSchema qw(get_standard_option);
  12 use PVE::Storage;
  13 use PVE::VZDump;
  14 use PVE::VZDump::Common;
  15 use PVE::API2Tools;
  16
  17 use Data::Dumper; # fixme: remove
  18
  19
  20 use base qw(PVE::RESTHandler);
  21
  22 __PACKAGE__->register_method ({
  23     name => 'vzdump',
  24     path => '',
  25     method => 'POST',
  26     description => "Create backup.",
  27     permissions => {
  28         description => "The user needs 'VM.Backup' permissions on any VM, and 'Datastore.AllocateSpace' on the backup storage. The 'maxfiles', 'tmpdir', 'dumpdir', 'script', 'bwlimit' and 'ionice' parameters are restricted to the 'root\@pam' user.",
  29         user => 'all',
  30     },
  31     protected => 1,
  32     proxyto => 'node',
  33     parameters => {
  34         additionalProperties => 0,
  35         properties => PVE::VZDump::Common::json_config_properties({
  36             stdout => {
  37                 type => 'boolean',
  38                 description => "Write tar to stdout, not to a file.",
  39                 optional => 1,
  40             },
  41         }),
  42     },
  43     returns => { type => 'string' },
  44     code => sub {
  45         my ($param) = @_;
  46
  47         my $rpcenv = PVE::RPCEnvironment::get();
  48
  49         my $user = $rpcenv->get_user();
  50
  51         my $nodename = PVE::INotify::nodename();
  52
  53         if ($rpcenv->{type} ne 'cli') {
  54             raise_param_exc({ node => "option is only allowed on the command line interface."})
  55                 if $param->{node} && $param->{node} ne $nodename;
  56
  57             raise_param_exc({ stdout => "option is only allowed on the command line interface."})
  58                 if $param->{stdout};
  59         }
  60
  61         foreach my $key (qw(maxfiles tmpdir dumpdir script bwlimit ionice)) {
  62             raise_param_exc({ $key => "Only root may set this option."})
  63                 if defined($param->{$key}) && ($user ne 'root@pam');
  64         }
  65
  66         PVE::VZDump::verify_vzdump_parameters($param, 1);
  67
  68         # silent exit if we run on wrong node
  69         return 'OK' if $param->{node} && $param->{node} ne $nodename;
  70
  71         my $cmdline = PVE::VZDump::Common::command_line($param);
  72         my ($vmids, $skiplist) = PVE::VZDump::get_included_guests($param);
  73
  74         if($param->{stop}){
  75             PVE::VZDump::stop_running_backups();
  76             return 'OK' if !scalar(@{$vmids});
  77         }
  78
  79         # silent exit if specified VMs run on other nodes
  80         return "OK" if !scalar(@{$vmids}) && !$param->{all};
  81
  82         my @exclude = PVE::Tools::split_list(extract_param($param, 'exclude'));
  83         $param->{exclude} = PVE::VZDump::check_vmids(@exclude);
  84
  85         # exclude-path list need to be 0 separated
  86         if (defined($param->{'exclude-path'})) {
  87             my @expaths = split(/\0/, $param->{'exclude-path'} || '');
  88             $param->{'exclude-path'} = [ @expaths ];
  89         }
  90
  91         if (defined($param->{mailto})) {
  92             my @mailto = PVE::Tools::split_list(extract_param($param, 'mailto'));
  93             $param->{mailto} = [ @mailto ];
  94         }
  95
  96         die "you can only backup a single VM with option --stdout\n"
  97             if $param->{stdout} && scalar(@{$vmids}) != 1;
  98
  99         $rpcenv->check($user, "/storage/$param->{storage}", [ 'Datastore.AllocateSpace' ])
 100             if $param->{storage};
 101
 102         my $worker = sub {
 103             my $upid = shift;
 104
 105             $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = $SIG{PIPE} = sub {
 106                 die "interrupted by signal\n";
 107             };
 108
 109             my $vzdump = PVE::VZDump->new($cmdline, $param, $skiplist);
 110
 111             eval {
 112                 $vzdump->getlock($upid); # only one process allowed
 113             };
 114             if (my $err = $@) {
 115                 $vzdump->sendmail([], 0, $err);
 116                 exit(-1);
 117             }
 118
 119             if (defined($param->{ionice})) {
 120                 if ($param->{ionice} > 7) {
 121                     PVE::VZDump::run_command(undef, "ionice -c3 -p $$");
 122                 } else {
 123                     PVE::VZDump::run_command(undef, "ionice -c2 -n$param->{ionice} -p $$");
 124                 }
 125             }
 126             $vzdump->exec_backup($rpcenv, $user);
 127         };
 128
 129         open STDOUT, '>/dev/null' if $param->{quiet} && !$param->{stdout};
 130         open STDERR, '>/dev/null' if $param->{quiet};
 131
 132         if ($rpcenv->{type} eq 'cli') {
 133             if ($param->{stdout}) {
 134
 135                 open my $saved_stdout, ">&STDOUT"
 136                     || die "can't dup STDOUT: $!\n";
 137
 138                 open STDOUT, '>&STDERR' ||
 139                     die "unable to redirect STDOUT: $!\n";
 140
 141                 $param->{stdout} = $saved_stdout;
 142             }
 143         }
 144
 145         my $taskid;
 146         $taskid = ${$vmids}[0] if scalar(@{$vmids}) == 1;
 147
 148         return $rpcenv->fork_worker('vzdump', $taskid, $user, $worker);
 149    }});
 150
 151 __PACKAGE__->register_method ({
 152     name => 'extractconfig',
 153     path => 'extractconfig',
 154     method => 'GET',
 155     description => "Extract configuration from vzdump backup archive.",
 156     permissions => {
 157         description => "The user needs 'VM.Backup' permissions on the backed up guest ID, and 'Datastore.AllocateSpace' on the backup storage.",
 158         user => 'all',
 159     },
 160     protected => 1,
 161     proxyto => 'node',
 162     parameters => {
 163         additionalProperties => 0,
 164         properties => {
 165             node => get_standard_option('pve-node'),
 166             volume => {
 167                 description => "Volume identifier",
 168                 type => 'string',
 169                 completion => \&PVE::Storage::complete_volume,
 170             },
 171         },
 172     },
 173     returns => { type => 'string' },
 174     code => sub {
 175         my ($param) = @_;
 176
 177         my $volume = extract_param($param, 'volume');
 178
 179         my $rpcenv = PVE::RPCEnvironment::get();
 180         my $authuser = $rpcenv->get_user();
 181
 182         my $storage_cfg = PVE::Storage::config();
 183         PVE::Storage::check_volume_access($rpcenv, $authuser, $storage_cfg, undef, $volume);
 184
 185         return PVE::Storage::extract_vzdump_config($storage_cfg, $volume);
 186     }});
 187
 188 1;