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Commit | Line | Data |
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7af97ad5 | 1 | package PVE::LXC::Create; |
5b4657d0 DM |
2 | |
3 | use strict; | |
4 | use warnings; | |
5 | use File::Basename; | |
6 | use File::Path; | |
7 | use Data::Dumper; | |
8 | ||
9 | use PVE::Storage; | |
10 | use PVE::LXC; | |
7af97ad5 | 11 | use PVE::LXC::Setup; |
f507c3a7 | 12 | use PVE::VZDump::ConvertOVZ; |
5b4657d0 | 13 | |
6ed8c6dd DM |
14 | sub next_free_nbd_dev { |
15 | ||
16 | for(my $i = 0;;$i++) { | |
17 | my $dev = "/dev/nbd$i"; | |
18 | last if ! -b $dev; | |
19 | next if -f "/sys/block/nbd$i/pid"; # busy | |
20 | return $dev; | |
21 | } | |
22 | die "unable to find free nbd device\n"; | |
23 | } | |
24 | ||
5b4657d0 DM |
25 | sub restore_archive { |
26 | my ($archive, $rootdir, $conf) = @_; | |
27 | ||
27916659 | 28 | my $userns_cmd = []; |
5b4657d0 | 29 | |
27916659 DM |
30 | # we always use the same mapping: 'b:0:100000:65536' |
31 | # if ($conf->{'lxc.id_map'}) { | |
32 | # $userns_cmd = ['lxc-usernsexec', '-m', 'b:0:100000:65536', '--']; | |
33 | # PVE::Tools::run_command(['chown', '-R', '100000:100000', $rootdir]); | |
34 | # } | |
5b4657d0 | 35 | |
27916659 | 36 | my $cmd = [@$userns_cmd, 'tar', 'xpf', $archive, '--numeric-owner', '--totals', |
5b4657d0 DM |
37 | '--sparse', '-C', $rootdir]; |
38 | ||
39 | push @$cmd, '--anchored'; | |
40 | push @$cmd, '--exclude' , './dev/*'; | |
41 | ||
6034ae50 DM |
42 | if ($archive eq '-') { |
43 | print "extracting archive from STDIN\n"; | |
44 | PVE::Tools::run_command($cmd, input => "<&STDIN"); | |
27916659 | 45 | } else { |
6034ae50 DM |
46 | print "extracting archive '$archive'\n"; |
47 | PVE::Tools::run_command($cmd); | |
27916659 | 48 | } |
6034ae50 | 49 | |
27916659 | 50 | # determine file type of /usr/bin/file itself to get guests' architecture |
a9d131df TL |
51 | $cmd = [@$userns_cmd, '/usr/bin/file', '-b', '-L', "$rootdir/usr/bin/file"]; |
52 | PVE::Tools::run_command($cmd, outfunc => sub { | |
53 | shift =~ /^ELF (\d{2}-bit)/; # safely assumes x86 linux | |
54 | my $arch_str = $1; | |
27916659 | 55 | $conf->{'arch'} = 'amd64'; # defaults to 64bit |
a9d131df | 56 | if(defined($arch_str)) { |
27916659 DM |
57 | $conf->{'arch'} = 'i386' if $arch_str =~ /32/; |
58 | print "Detected container architecture: $conf->{'arch'}\n"; | |
a9d131df | 59 | } else { |
27916659 DM |
60 | print "CT architecture detection failed, falling back to amd64.\n" . |
61 | "Edit the config in /etc/pve/nodes/{node}/lxc/{vmid}/config " . | |
62 | "to set another architecture.\n"; | |
a9d131df TL |
63 | } |
64 | }); | |
5b4657d0 DM |
65 | } |
66 | ||
f507c3a7 WL |
67 | sub tar_archive_search_conf { |
68 | my ($archive) = @_; | |
69 | ||
70 | die "ERROR: file '$archive' does not exist\n" if ! -f $archive; | |
71 | ||
72 | my $pid = open(my $fh, '-|', 'tar', 'tf', $archive) || | |
27916659 | 73 | die "unable to open file '$archive'\n"; |
f507c3a7 WL |
74 | |
75 | my $file; | |
effa4f43 | 76 | while (defined($file = <$fh>)) { |
27916659 | 77 | if ($file =~ m!^(\./etc/vzdump/(pct|vps)\.conf)$!) { |
effa4f43 DM |
78 | $file = $1; # untaint |
79 | last; | |
80 | } | |
f507c3a7 WL |
81 | } |
82 | ||
83 | kill 15, $pid; | |
84 | waitpid $pid, 0; | |
85 | close $fh; | |
86 | ||
effa4f43 | 87 | die "ERROR: archive contains no configuration file\n" if !$file; |
f507c3a7 WL |
88 | chomp $file; |
89 | ||
90 | return $file; | |
91 | } | |
92 | ||
93 | sub recover_config { | |
effa4f43 | 94 | my ($archive) = @_; |
f507c3a7 WL |
95 | |
96 | my $conf_file = tar_archive_search_conf($archive); | |
27916659 | 97 | |
f507c3a7 WL |
98 | my $raw = ''; |
99 | my $out = sub { | |
100 | my $output = shift; | |
101 | $raw .= "$output\n"; | |
102 | }; | |
103 | ||
104 | PVE::Tools::run_command(['tar', '-xpOf', $archive, $conf_file, '--occurrence'], outfunc => $out); | |
105 | ||
effa4f43 | 106 | my $conf; |
27916659 | 107 | my $disksize; |
f507c3a7 | 108 | |
27916659 | 109 | if ($conf_file =~ m/pct\.conf/) { |
f507c3a7 | 110 | |
3381b5c2 | 111 | $conf = PVE::LXC::parse_pct_config("/lxc/0.conf" , $raw); |
f507c3a7 | 112 | |
27916659 | 113 | delete $conf->{snapshots}; |
bb1ac2de | 114 | delete $conf->{template}; # restored CT is never a template |
27916659 DM |
115 | |
116 | if (defined($conf->{rootfs})) { | |
117 | my $rootinfo = PVE::LXC::parse_ct_mountpoint($conf->{rootfs}); | |
118 | $disksize = $rootinfo->{size} if defined($rootinfo->{size}); | |
119 | } | |
120 | ||
effa4f43 | 121 | } elsif ($conf_file =~ m/vps\.conf/) { |
27916659 DM |
122 | |
123 | ($conf, $disksize) = PVE::VZDump::ConvertOVZ::convert_ovz($raw); | |
124 | ||
effa4f43 DM |
125 | } else { |
126 | ||
27916659 | 127 | die "internal error"; |
f507c3a7 WL |
128 | } |
129 | ||
27916659 | 130 | return wantarray ? ($conf, $disksize) : $conf; |
f507c3a7 WL |
131 | } |
132 | ||
5b4657d0 | 133 | sub restore_and_configure { |
f507c3a7 | 134 | my ($vmid, $archive, $rootdir, $conf, $password, $restore) = @_; |
5b4657d0 DM |
135 | |
136 | restore_archive($archive, $rootdir, $conf); | |
137 | ||
f507c3a7 | 138 | if (!$restore) { |
7af97ad5 | 139 | my $lxc_setup = PVE::LXC::Setup->new($conf, $rootdir); # detect OS |
5b4657d0 | 140 | |
f507c3a7 WL |
141 | PVE::LXC::write_config($vmid, $conf); # safe config (after OS detection) |
142 | $lxc_setup->post_create_hook($password); | |
27916659 DM |
143 | } else { |
144 | # restore: try to extract configuration from archive | |
5b4657d0 | 145 | |
27916659 DM |
146 | my $pct_cfg_fn = "$rootdir/etc/vzdump/pct.conf"; |
147 | my $ovz_cfg_fn = "$rootdir/etc/vzdump/vps.conf"; | |
148 | if (-f $pct_cfg_fn) { | |
149 | my $raw = PVE::Tools::file_get_contents($pct_cfg_fn); | |
150 | my $oldconf = PVE::LXC::parse_pct_config("/lxc/$vmid.conf", $raw); | |
5b4657d0 | 151 | |
27916659 DM |
152 | foreach my $key (keys %$oldconf) { |
153 | next if $key eq 'digest' || $key eq 'rootfs' || $key eq 'snapshots'; | |
154 | $conf->{$key} = $oldconf->{$key} if !defined($conf->{$key}); | |
155 | } | |
156 | ||
157 | } elsif (-f $ovz_cfg_fn) { | |
158 | print "###########################################################\n"; | |
159 | print "Converting OpenVZ configuration to LXC.\n"; | |
160 | print "Please check the configuration and reconfigure the network.\n"; | |
161 | print "###########################################################\n"; | |
162 | ||
163 | my $raw = PVE::Tools::file_get_contents($ovz_cfg_fn); | |
164 | my $oldconf = PVE::VZDump::ConvertOVZ::convert_ovz($raw); | |
165 | foreach my $key (keys %$oldconf) { | |
166 | $conf->{$key} = $oldconf->{$key} if !defined($conf->{$key}); | |
167 | } | |
5b4657d0 | 168 | |
27916659 DM |
169 | } else { |
170 | print "###########################################################\n"; | |
171 | print "Backup archive does not contain any configuration\n"; | |
172 | print "###########################################################\n"; | |
173 | } | |
174 | } | |
5b4657d0 DM |
175 | } |
176 | ||
5b4657d0 | 177 | sub create_rootfs { |
27916659 | 178 | my ($storage_cfg, $storage, $volid, $vmid, $conf, $archive, $password, $restore) = @_; |
148d1cb4 DM |
179 | |
180 | my $config_fn = PVE::LXC::config_file($vmid); | |
181 | if (-f $config_fn) { | |
182 | die "container exists" if !$restore; # just to be sure | |
183 | ||
184 | my $old_conf = PVE::LXC::load_config($vmid); | |
27916659 DM |
185 | |
186 | # destroy old container volume | |
187 | PVE::LXC::destory_lxc_container($storage_cfg, $vmid, $old_conf); | |
148d1cb4 | 188 | |
27916659 DM |
189 | # do not copy all settings to restored container |
190 | foreach my $opt (qw(rootfs digest snapshots)) { | |
191 | delete $old_conf->{$opt}; | |
f09ce711 | 192 | } |
27916659 | 193 | PVE::LXC::update_pct_config($vmid, $conf, 0, $old_conf); |
5b4657d0 | 194 | |
148d1cb4 | 195 | PVE::LXC::create_config($vmid, $conf); |
5b4657d0 | 196 | |
148d1cb4 DM |
197 | } else { |
198 | ||
199 | PVE::LXC::create_config($vmid, $conf); | |
200 | } | |
201 | ||
7fc16e9e AD |
202 | my $image_path = PVE::Storage::path($storage_cfg, $volid); |
203 | my $mountpoint_path = "/var/lib/lxc/$vmid/rootfs"; | |
204 | my $mountpoint = { volume => $volid, mp => "/" }; | |
7fc16e9e AD |
205 | |
206 | eval { | |
207 | PVE::Storage::activate_volumes($storage_cfg, [$volid]); | |
208 | my $loopdevs = PVE::LXC::attach_loops($storage_cfg, [$volid]); | |
209 | ||
210 | if (!-d $image_path) { | |
211 | my $cmd = ['mkfs.ext4', $image_path]; | |
212 | PVE::Tools::run_command($cmd); | |
3d8cbc23 | 213 | } |
7fc16e9e | 214 | |
1e8f01be | 215 | PVE::LXC::mountpoint_mount($mountpoint, $mountpoint_path, $storage_cfg, $loopdevs); |
7fc16e9e AD |
216 | |
217 | restore_and_configure($vmid, $archive, $mountpoint_path, $conf, $password, $restore); | |
218 | }; | |
219 | if (my $err = $@) { | |
220 | eval { | |
221 | PVE::LXC::dettach_loops($storage_cfg, [$volid]); | |
222 | PVE::Storage::deactivate_volumes($storage_cfg, [$volid]); | |
223 | }; | |
224 | warn $@ if $@; | |
225 | die $err; | |
5b4657d0 | 226 | } |
7fc16e9e AD |
227 | |
228 | PVE::Tools::run_command(['umount', '-l', '-d', $mountpoint_path]); | |
229 | PVE::LXC::dettach_loops($storage_cfg, [$volid]); | |
230 | PVE::Storage::deactivate_volumes($storage_cfg, [$volid]); | |
231 | ||
5b4657d0 DM |
232 | } |
233 | ||
234 | 1; |