src/lxc-pve-prestart-hook

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5 use POSIX;
   6 use File::Path;
   7
   8 use PVE::SafeSyslog;
   9 use PVE::Tools;
  10 use PVE::Cluster;
  11 use PVE::INotify;
  12 use PVE::RPCEnvironment;
  13 use PVE::JSONSchema qw(get_standard_option);
  14 use PVE::CLIHandler;
  15 use PVE::Storage;
  16 use PVE::LXC;
  17 use PVE::LXCSetup;
  18 use Data::Dumper;
  19
  20 use base qw(PVE::CLIHandler);
  21
  22 $ENV{'PATH'} = '/sbin:/bin:/usr/sbin:/usr/bin';
  23
  24 initlog ('lxc-pve-prestart-hook');
  25
  26 die "please run as root\n" if $> != 0;
  27
  28 PVE::INotify::inotify_init();
  29
  30 my $rpcenv = PVE::RPCEnvironment->init('cli');
  31 $rpcenv->set_language($ENV{LANG});
  32 $rpcenv->set_user('root@pam');
  33
  34 # we cannot use cfs_read here (permission problem)
  35 #$rpcenv->init_request();
  36
  37 my $nodename = PVE::INotify::nodename();
  38
  39 __PACKAGE__->register_method ({
  40     name => 'lxc-pve-prestart-hook',
  41     path => 'lxc-pve-prestart-hook',
  42     method => 'GET',
  43     description => "Create a new container root directory.",
  44     parameters => {
  45         additionalProperties => 0,
  46         properties => {
  47             name => {
  48                 description => "The container name. This hook is only active for containers using numeric IDs, where configuration is stored on /etc/pve/lxc/<name>.conf (else it is just a NOP).",
  49                 type => 'string',
  50                 pattern => '\S+',
  51                 maxLength => 64,
  52             },
  53             path => {
  54                 description => "The path to the container configuration directory (LXC internal argument - do not pass manually!).",
  55                 type => 'string',
  56             },
  57             rootfs => {
  58                 description => "The path to the container's rootfs (LXC internal argument - do not pass manually!)",
  59                 type => 'string',
  60             },
  61         },
  62     },
  63     returns => { type => 'null' },
  64
  65     code => sub {
  66         my ($param) = @_;
  67
  68         return undef if $param->{name} !~ m/^\d+$/;
  69
  70         my $rootdir = $ENV{LXC_ROOTFS_MOUNT};
  71
  72         my $vmid = $param->{name};
  73
  74         PVE::Cluster::check_cfs_quorum(); # only start if we have quorum
  75
  76         return undef if ! -f PVE::LXC::config_file($vmid);
  77
  78         my $conf = PVE::LXC::load_config($vmid);
  79
  80         my $storage_cfg = PVE::Storage::config();
  81
  82         PVE::LXC::foreach_mountpoint($conf, sub {
  83             my ($ms, $mountpoint) = @_;
  84
  85             my $volid = $mountpoint->{volume};
  86             return if !$volid || $volid =~ m|^/dev/.+|;
  87
  88             PVE::Storage::activate_volumes($storage_cfg, [$volid]);
  89
  90             my ($storage, $volname) = PVE::Storage::parse_volume_id($volid);
  91             my $scfg = PVE::Storage::storage_config($storage_cfg, $storage);
  92             my ($vtype, undef, undef, undef, undef, $isBase, $format) =
  93                 PVE::Storage::parse_volname($storage_cfg, $volid);
  94
  95             if($ms ne 'rootfs' && $format ne 'subvol' && ($scfg->{type} eq 'dir' || $scfg->{type} eq 'nfs')) {
  96                 my $path = PVE::Storage::path($storage_cfg, $volid);
  97                 PVE::Tools::run_command(['losetup', '--find', '--show', $path]);
  98             }
  99         });
 100
 101         return undef;
 102     }});
 103
 104
 105 push @ARGV, 'help' if !scalar(@ARGV);
 106
 107 my $param = {};
 108
 109 if ((scalar(@ARGV) == 1) && ($ARGV[0] eq 'printmanpod') ||
 110     ($ARGV[0] eq 'verifyapi')) {
 111     # OK
 112 } elsif ((scalar(@ARGV) == 3) && ($ARGV[1] eq 'lxc') && ($ARGV[2] eq 'pre-start')) {
 113     $param->{name} = $ENV{'LXC_NAME'};
 114     die "got wrong name" if $param->{name} ne $ARGV[0];
 115
 116     $param->{path} = $ENV{'LXC_CONFIG_FILE'};
 117     $param->{rootfs} = $ENV{'LXC_ROOTFS_PATH'};
 118     @ARGV = ();
 119 } else {
 120     @ARGV = ('help');
 121 }
 122
 123 my $cmddef = [ __PACKAGE__, 'lxc-pve-prestart-hook', [], $param];
 124
 125 PVE::CLIHandler::handle_simple_cmd($cmddef, \@ARGV, undef, $0);
 126
 127 exit 0;
 128
 129 __END__
 130
 131 =head1 NAME
 132
 133 lxc-pve - LXC pre-start hook for Proxmox VE
 134
 135 =head1 SYNOPSIS
 136
 137 =include synopsis
 138
 139 =head1 DESCRIPTION
 140
 141 This mount hook activate storage and volumes for pve container.
 142
 143 =head1 SEE ALSO
 144
 145 lct(1)
 146
 147 =include pve_copyright