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Commit | Line | Data |
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1dc01b9f DM |
1 | package PVE::Storage::LVMPlugin; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
074b2cb4 | 5 | |
1dc01b9f | 6 | use IO::File; |
074b2cb4 | 7 | |
1dc01b9f DM |
8 | use PVE::Tools qw(run_command trim); |
9 | use PVE::Storage::Plugin; | |
10 | use PVE::JSONSchema qw(get_standard_option); | |
11 | ||
12 | use base qw(PVE::Storage::Plugin); | |
13 | ||
14 | # lvm helper functions | |
15 | ||
16 | sub lvm_pv_info { | |
17 | my ($device) = @_; | |
18 | ||
19 | die "no device specified" if !$device; | |
20 | ||
21 | my $has_label = 0; | |
22 | ||
23 | my $cmd = ['/usr/bin/file', '-L', '-s', $device]; | |
24 | run_command($cmd, outfunc => sub { | |
25 | my $line = shift; | |
26 | $has_label = 1 if $line =~ m/LVM2/; | |
27 | }); | |
28 | ||
29 | return undef if !$has_label; | |
30 | ||
31 | $cmd = ['/sbin/pvs', '--separator', ':', '--noheadings', '--units', 'k', | |
32 | '--unbuffered', '--nosuffix', '--options', | |
33 | 'pv_name,pv_size,vg_name,pv_uuid', $device]; | |
34 | ||
35 | my $pvinfo; | |
36 | run_command($cmd, outfunc => sub { | |
37 | my $line = shift; | |
38 | ||
39 | $line = trim($line); | |
40 | ||
41 | my ($pvname, $size, $vgname, $uuid) = split(':', $line); | |
42 | ||
5c687bd9 | 43 | die "found multiple pvs entries for device '$device'\n" |
1dc01b9f DM |
44 | if $pvinfo; |
45 | ||
46 | $pvinfo = { | |
47 | pvname => $pvname, | |
a3f38a64 | 48 | size => int($size), |
1dc01b9f DM |
49 | vgname => $vgname, |
50 | uuid => $uuid, | |
51 | }; | |
52 | }); | |
53 | ||
54 | return $pvinfo; | |
55 | } | |
56 | ||
57 | sub clear_first_sector { | |
58 | my ($dev) = shift; | |
59 | ||
60 | if (my $fh = IO::File->new($dev, "w")) { | |
61 | my $buf = 0 x 512; | |
62 | syswrite $fh, $buf; | |
5c687bd9 | 63 | $fh->close(); |
1dc01b9f DM |
64 | } |
65 | } | |
66 | ||
67 | sub lvm_create_volume_group { | |
68 | my ($device, $vgname, $shared) = @_; | |
5c687bd9 | 69 | |
1dc01b9f | 70 | my $res = lvm_pv_info($device); |
5c687bd9 | 71 | |
1dc01b9f DM |
72 | if ($res->{vgname}) { |
73 | return if $res->{vgname} eq $vgname; # already created | |
74 | die "device '$device' is already used by volume group '$res->{vgname}'\n"; | |
75 | } | |
76 | ||
77 | clear_first_sector($device); # else pvcreate fails | |
78 | ||
79 | # we use --metadatasize 250k, which reseults in "pe_start = 512" | |
80 | # so pe_start is aligned on a 128k boundary (advantage for SSDs) | |
81 | my $cmd = ['/sbin/pvcreate', '--metadatasize', '250k', $device]; | |
82 | ||
83 | run_command($cmd, errmsg => "pvcreate '$device' error"); | |
84 | ||
85 | $cmd = ['/sbin/vgcreate', $vgname, $device]; | |
86 | # push @$cmd, '-c', 'y' if $shared; # we do not use this yet | |
87 | ||
88 | run_command($cmd, errmsg => "vgcreate $vgname $device error"); | |
89 | } | |
90 | ||
91 | sub lvm_vgs { | |
92 | ||
93 | my $cmd = ['/sbin/vgs', '--separator', ':', '--noheadings', '--units', 'b', | |
94 | '--unbuffered', '--nosuffix', '--options', | |
95 | 'vg_name,vg_size,vg_free']; | |
96 | ||
97 | my $vgs = {}; | |
98 | eval { | |
99 | run_command($cmd, outfunc => sub { | |
100 | my $line = shift; | |
101 | ||
102 | $line = trim($line); | |
103 | ||
104 | my ($name, $size, $free) = split (':', $line); | |
105 | ||
106 | $vgs->{$name} = { size => int ($size), free => int ($free) }; | |
107 | }); | |
108 | }; | |
109 | my $err = $@; | |
110 | ||
111 | # just warn (vgs return error code 5 if clvmd does not run) | |
112 | # but output is still OK (list without clustered VGs) | |
113 | warn $err if $err; | |
114 | ||
115 | return $vgs; | |
116 | } | |
117 | ||
3e44cd84 | 118 | sub lvm_list_volumes { |
1dc01b9f DM |
119 | my ($vgname) = @_; |
120 | ||
121 | my $cmd = ['/sbin/lvs', '--separator', ':', '--noheadings', '--units', 'b', | |
122 | '--unbuffered', '--nosuffix', '--options', | |
3e44cd84 | 123 | 'vg_name,lv_name,lv_size,lv_attr,pool_lv,data_percent,metadata_percent,snap_percent,uuid,tags']; |
1dc01b9f DM |
124 | |
125 | push @$cmd, $vgname if $vgname; | |
126 | ||
127 | my $lvs = {}; | |
128 | run_command($cmd, outfunc => sub { | |
129 | my $line = shift; | |
130 | ||
131 | $line = trim($line); | |
132 | ||
3e44cd84 DM |
133 | my ($vg_name, $lv_name, $lv_size, $lv_attr, $pool_lv, $data_percent, $meta_percent, $snap_percent, $uuid, $tags) = split(':', $line); |
134 | return if !$vg_name; | |
135 | return if !$lv_name; | |
1dc01b9f | 136 | |
3e44cd84 | 137 | my $lv_type = substr($lv_attr, 0, 1); |
1dc01b9f | 138 | |
3e44cd84 | 139 | my $d = { |
a3f38a64 | 140 | lv_size => int($lv_size), |
3e44cd84 DM |
141 | lv_type => $lv_type, |
142 | }; | |
143 | $d->{pool_lv} = $pool_lv if $pool_lv; | |
7a9dd119 | 144 | $d->{tags} = $tags if $tags; |
3e44cd84 DM |
145 | |
146 | if ($lv_type eq 't') { | |
147 | $data_percent ||= 0; | |
148 | $meta_percent ||= 0; | |
149 | $snap_percent ||= 0; | |
faabe9e2 | 150 | $d->{used} = int(($data_percent * $lv_size)/100); |
1dc01b9f | 151 | } |
3e44cd84 | 152 | $lvs->{$vg_name}->{$lv_name} = $d; |
1dc01b9f DM |
153 | }); |
154 | ||
155 | return $lvs; | |
156 | } | |
157 | ||
5c687bd9 | 158 | # Configuration |
1dc01b9f | 159 | |
1dc01b9f DM |
160 | sub type { |
161 | return 'lvm'; | |
162 | } | |
163 | ||
164 | sub plugindata { | |
165 | return { | |
68b2c18a | 166 | content => [ {images => 1, rootdir => 1}, { images => 1 }], |
1dc01b9f DM |
167 | }; |
168 | } | |
169 | ||
170 | sub properties { | |
171 | return { | |
172 | vgname => { | |
173 | description => "Volume group name.", | |
174 | type => 'string', format => 'pve-storage-vgname', | |
175 | }, | |
176 | base => { | |
177 | description => "Base volume. This volume is automatically activated.", | |
178 | type => 'string', format => 'pve-volume-id', | |
179 | }, | |
180 | saferemove => { | |
181 | description => "Zero-out data when removing LVs.", | |
182 | type => 'boolean', | |
183 | }, | |
399ab2b6 PB |
184 | saferemove_throughput => { |
185 | description => "Wipe throughput (cstream -t parameter value).", | |
186 | type => 'string', | |
187 | }, | |
7a9dd119 FG |
188 | tagged_only => { |
189 | description => "Only use logical volumes tagged with 'pve-vm-ID'.", | |
190 | type => 'boolean', | |
191 | } | |
1dc01b9f DM |
192 | }; |
193 | } | |
194 | ||
195 | sub options { | |
196 | return { | |
197 | vgname => { fixed => 1 }, | |
0423e8c6 | 198 | nodes => { optional => 1 }, |
1dc01b9f DM |
199 | shared => { optional => 1 }, |
200 | disable => { optional => 1 }, | |
0423e8c6 FG |
201 | saferemove => { optional => 1 }, |
202 | saferemove_throughput => { optional => 1 }, | |
1dc01b9f | 203 | content => { optional => 1 }, |
0423e8c6 | 204 | base => { fixed => 1, optional => 1 }, |
7a9dd119 | 205 | tagged_only => { optional => 1 }, |
9edb99a5 | 206 | bwlimit => { optional => 1 }, |
1dc01b9f DM |
207 | }; |
208 | } | |
209 | ||
210 | # Storage implementation | |
211 | ||
f9602323 TL |
212 | sub on_add_hook { |
213 | my ($class, $storeid, $scfg, %param) = @_; | |
214 | ||
215 | if (my $base = $scfg->{base}) { | |
216 | my ($baseid, $volname) = PVE::Storage::parse_volume_id($base); | |
217 | ||
218 | my $cfg = PVE::Storage::config(); | |
219 | my $basecfg = PVE::Storage::storage_config ($cfg, $baseid, 1); | |
220 | die "base storage ID '$baseid' does not exist\n" if !$basecfg; | |
221 | ||
222 | # we only support iscsi for now | |
223 | die "unsupported base type '$basecfg->{type}'" | |
224 | if $basecfg->{type} ne 'iscsi'; | |
225 | ||
226 | my $path = PVE::Storage::path($cfg, $base); | |
227 | ||
228 | PVE::Storage::activate_storage($cfg, $baseid); | |
229 | ||
230 | lvm_create_volume_group($path, $scfg->{vgname}, $scfg->{shared}); | |
231 | } | |
232 | } | |
233 | ||
1dc01b9f DM |
234 | sub parse_volname { |
235 | my ($class, $volname) = @_; | |
236 | ||
5dca5c7c | 237 | PVE::Storage::Plugin::parse_lvm_name($volname); |
1dc01b9f DM |
238 | |
239 | if ($volname =~ m/^(vm-(\d+)-\S+)$/) { | |
7800e84d | 240 | return ('images', $1, $2, undef, undef, undef, 'raw'); |
1dc01b9f DM |
241 | } |
242 | ||
243 | die "unable to parse lvm volume name '$volname'\n"; | |
244 | } | |
245 | ||
452e3ee7 | 246 | sub filesystem_path { |
e67069eb DM |
247 | my ($class, $scfg, $volname, $snapname) = @_; |
248 | ||
249 | die "lvm snapshot is not implemented"if defined($snapname); | |
1dc01b9f DM |
250 | |
251 | my ($vtype, $name, $vmid) = $class->parse_volname($volname); | |
252 | ||
253 | my $vg = $scfg->{vgname}; | |
5c687bd9 | 254 | |
1dc01b9f DM |
255 | my $path = "/dev/$vg/$name"; |
256 | ||
5521b580 | 257 | return wantarray ? ($path, $vmid, $vtype) : $path; |
1dc01b9f DM |
258 | } |
259 | ||
5eab0272 DM |
260 | sub create_base { |
261 | my ($class, $storeid, $scfg, $volname) = @_; | |
262 | ||
263 | die "can't create base images in lvm storage\n"; | |
264 | } | |
265 | ||
266 | sub clone_image { | |
f236eaf8 | 267 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; |
5eab0272 DM |
268 | |
269 | die "can't clone images in lvm storage\n"; | |
270 | } | |
271 | ||
b1378461 DM |
272 | sub lvm_find_free_diskname { |
273 | my ($lvs, $vg, $storeid, $vmid) = @_; | |
274 | ||
275 | my $name; | |
276 | ||
277 | for (my $i = 1; $i < 100; $i++) { | |
278 | my $tn = "vm-$vmid-disk-$i"; | |
279 | if (!defined ($lvs->{$vg}->{$tn})) { | |
280 | $name = $tn; | |
281 | last; | |
282 | } | |
283 | } | |
284 | ||
285 | die "unable to allocate an image name for ID $vmid in storage '$storeid'\n" | |
286 | if !$name; | |
287 | ||
288 | return $name; | |
289 | } | |
290 | ||
1dc01b9f DM |
291 | sub alloc_image { |
292 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
293 | ||
294 | die "unsupported format '$fmt'" if $fmt ne 'raw'; | |
295 | ||
5c687bd9 | 296 | die "illegal name '$name' - sould be 'vm-$vmid-*'\n" |
1dc01b9f DM |
297 | if $name && $name !~ m/^vm-$vmid-/; |
298 | ||
299 | my $vgs = lvm_vgs(); | |
300 | ||
301 | my $vg = $scfg->{vgname}; | |
302 | ||
e8acaa3c | 303 | die "no such volume group '$vg'\n" if !defined ($vgs->{$vg}); |
1dc01b9f DM |
304 | |
305 | my $free = int($vgs->{$vg}->{free}); | |
306 | ||
307 | die "not enough free space ($free < $size)\n" if $free < $size; | |
308 | ||
b1378461 | 309 | $name = lvm_find_free_diskname(lvm_list_volumes($vg), $vg, $storeid, $vmid) |
1dc01b9f DM |
310 | if !$name; |
311 | ||
312 | my $cmd = ['/sbin/lvcreate', '-aly', '--addtag', "pve-vm-$vmid", '--size', "${size}k", '--name', $name, $vg]; | |
313 | ||
314 | run_command($cmd, errmsg => "lvcreate '$vg/pve-vm-$vmid' error"); | |
315 | ||
316 | return $name; | |
317 | } | |
318 | ||
319 | sub free_image { | |
32437ed2 | 320 | my ($class, $storeid, $scfg, $volname, $isBase) = @_; |
1dc01b9f DM |
321 | |
322 | my $vg = $scfg->{vgname}; | |
399ab2b6 | 323 | |
1dc01b9f DM |
324 | # we need to zero out LVM data for security reasons |
325 | # and to allow thin provisioning | |
326 | ||
327 | my $zero_out_worker = sub { | |
399ab2b6 PB |
328 | print "zero-out data on image $volname (/dev/$vg/del-$volname)\n"; |
329 | ||
330 | # wipe throughput up to 10MB/s by default; may be overwritten with saferemove_throughput | |
331 | my $throughput = '-10485760'; | |
332 | if ($scfg->{saferemove_throughput}) { | |
333 | $throughput = $scfg->{saferemove_throughput}; | |
334 | } | |
335 | ||
336 | my $cmd = [ | |
337 | '/usr/bin/cstream', | |
338 | '-i', '/dev/zero', | |
339 | '-o', "/dev/$vg/del-$volname", | |
340 | '-T', '10', | |
341 | '-v', '1', | |
342 | '-b', '1048576', | |
343 | '-t', "$throughput" | |
344 | ]; | |
345 | eval { run_command($cmd, errmsg => "zero out finished (note: 'No space left on device' is ok here)"); }; | |
1dc01b9f DM |
346 | warn $@ if $@; |
347 | ||
348 | $class->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub { | |
349 | my $cmd = ['/sbin/lvremove', '-f', "$vg/del-$volname"]; | |
350 | run_command($cmd, errmsg => "lvremove '$vg/del-$volname' error"); | |
351 | }); | |
399ab2b6 | 352 | print "successfully removed volume $volname ($vg/del-$volname)\n"; |
1dc01b9f DM |
353 | }; |
354 | ||
399ab2b6 PB |
355 | my $cmd = ['/sbin/lvchange', '-aly', "$vg/$volname"]; |
356 | run_command($cmd, errmsg => "can't activate LV '$vg/$volname' to zero-out its data"); | |
357 | ||
1dc01b9f DM |
358 | if ($scfg->{saferemove}) { |
359 | # avoid long running task, so we only rename here | |
399ab2b6 | 360 | $cmd = ['/sbin/lvrename', $vg, $volname, "del-$volname"]; |
1dc01b9f DM |
361 | run_command($cmd, errmsg => "lvrename '$vg/$volname' error"); |
362 | return $zero_out_worker; | |
363 | } else { | |
364 | my $tmpvg = $scfg->{vgname}; | |
399ab2b6 | 365 | $cmd = ['/sbin/lvremove', '-f', "$tmpvg/$volname"]; |
1dc01b9f DM |
366 | run_command($cmd, errmsg => "lvremove '$tmpvg/$volname' error"); |
367 | } | |
368 | ||
369 | return undef; | |
370 | } | |
371 | ||
7a9dd119 FG |
372 | my $check_tags = sub { |
373 | my ($tags) = @_; | |
374 | ||
375 | return defined($tags) && $tags =~ /(^|,)pve-vm-\d+(,|$)/; | |
376 | }; | |
377 | ||
1dc01b9f DM |
378 | sub list_images { |
379 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
380 | ||
381 | my $vgname = $scfg->{vgname}; | |
382 | ||
3e44cd84 | 383 | $cache->{lvs} = lvm_list_volumes() if !$cache->{lvs}; |
1dc01b9f DM |
384 | |
385 | my $res = []; | |
5c687bd9 | 386 | |
1dc01b9f DM |
387 | if (my $dat = $cache->{lvs}->{$vgname}) { |
388 | ||
389 | foreach my $volname (keys %$dat) { | |
390 | ||
3e44cd84 DM |
391 | next if $volname !~ m/^vm-(\d+)-/; |
392 | my $owner = $1; | |
393 | ||
394 | my $info = $dat->{$volname}; | |
395 | ||
7a9dd119 FG |
396 | next if $scfg->{tagged_only} && !&$check_tags($info->{tags}); |
397 | ||
3e44cd84 | 398 | next if $info->{lv_type} ne '-'; |
1dc01b9f DM |
399 | |
400 | my $volid = "$storeid:$volname"; | |
401 | ||
402 | if ($vollist) { | |
403 | my $found = grep { $_ eq $volid } @$vollist; | |
404 | next if !$found; | |
405 | } else { | |
3e44cd84 | 406 | next if defined($vmid) && ($owner ne $vmid); |
1dc01b9f DM |
407 | } |
408 | ||
3e44cd84 DM |
409 | push @$res, { |
410 | volid => $volid, format => 'raw', size => $info->{lv_size}, vmid => $owner, | |
411 | }; | |
1dc01b9f DM |
412 | } |
413 | } | |
414 | ||
415 | return $res; | |
416 | } | |
417 | ||
418 | sub status { | |
419 | my ($class, $storeid, $scfg, $cache) = @_; | |
420 | ||
421 | $cache->{vgs} = lvm_vgs() if !$cache->{vgs}; | |
422 | ||
423 | my $vgname = $scfg->{vgname}; | |
424 | ||
097a2b2f DM |
425 | if (my $info = $cache->{vgs}->{$vgname}) { |
426 | return ($info->{size}, $info->{free}, $info->{size} - $info->{free}, 1); | |
1dc01b9f DM |
427 | } |
428 | ||
429 | return undef; | |
430 | } | |
431 | ||
432 | sub activate_storage { | |
433 | my ($class, $storeid, $scfg, $cache) = @_; | |
434 | ||
435 | $cache->{vgs} = lvm_vgs() if !$cache->{vgs}; | |
436 | ||
437 | # In LVM2, vgscans take place automatically; | |
438 | # this is just to be sure | |
5c687bd9 | 439 | if ($cache->{vgs} && !$cache->{vgscaned} && |
1dc01b9f DM |
440 | !$cache->{vgs}->{$scfg->{vgname}}) { |
441 | $cache->{vgscaned} = 1; | |
442 | my $cmd = ['/sbin/vgscan', '--ignorelockingfailure', '--mknodes']; | |
443 | eval { run_command($cmd, outfunc => sub {}); }; | |
444 | warn $@ if $@; | |
445 | } | |
446 | ||
447 | # we do not acticate any volumes here ('vgchange -aly') | |
448 | # instead, volumes are activate individually later | |
449 | } | |
450 | ||
451 | sub deactivate_storage { | |
452 | my ($class, $storeid, $scfg, $cache) = @_; | |
453 | ||
454 | my $cmd = ['/sbin/vgchange', '-aln', $scfg->{vgname}]; | |
455 | run_command($cmd, errmsg => "can't deactivate VG '$scfg->{vgname}'"); | |
456 | } | |
457 | ||
458 | sub activate_volume { | |
02e797b8 | 459 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; |
c8943a85 | 460 | #fix me lvmchange is not provided on |
02e797b8 | 461 | my $path = $class->path($scfg, $volname, $snapname); |
1dc01b9f | 462 | |
c8943a85 | 463 | my $lvm_activate_mode = 'ey'; |
1dc01b9f DM |
464 | |
465 | my $cmd = ['/sbin/lvchange', "-a$lvm_activate_mode", $path]; | |
466 | run_command($cmd, errmsg => "can't activate LV '$path'"); | |
467 | } | |
468 | ||
469 | sub deactivate_volume { | |
02e797b8 | 470 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; |
1dc01b9f | 471 | |
02e797b8 | 472 | my $path = $class->path($scfg, $volname, $snapname); |
1dc01b9f DM |
473 | return if ! -b $path; |
474 | ||
475 | my $cmd = ['/sbin/lvchange', '-aln', $path]; | |
476 | run_command($cmd, errmsg => "can't deactivate LV '$path'"); | |
477 | } | |
478 | ||
530defb6 AD |
479 | sub volume_resize { |
480 | my ($class, $scfg, $storeid, $volname, $size, $running) = @_; | |
481 | ||
482 | $size = ($size/1024/1024) . "M"; | |
483 | ||
484 | my $path = $class->path($scfg, $volname); | |
485 | my $cmd = ['/sbin/lvextend', '-L', $size, $path]; | |
486 | run_command($cmd, errmsg => "error resizing volume '$path'"); | |
487 | ||
488 | return 1; | |
489 | } | |
490 | ||
33818d16 | 491 | sub volume_snapshot { |
f5640e7d | 492 | my ($class, $scfg, $storeid, $volname, $snap) = @_; |
33818d16 AD |
493 | |
494 | die "lvm snapshot is not implemented"; | |
495 | } | |
496 | ||
051e85b8 AD |
497 | sub volume_snapshot_rollback { |
498 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
499 | ||
500 | die "lvm snapshot rollback is not implemented"; | |
501 | } | |
502 | ||
f57e796b AD |
503 | sub volume_snapshot_delete { |
504 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
505 | ||
506 | die "lvm snapshot delete is not implemented"; | |
507 | } | |
508 | ||
f7d4064f AD |
509 | sub volume_has_feature { |
510 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
511 | ||
9bb4abf6 AD |
512 | my $features = { |
513 | copy => { base => 1, current => 1}, | |
514 | }; | |
515 | ||
516 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
517 | $class->parse_volname($volname); | |
518 | ||
519 | my $key = undef; | |
520 | if($snapname){ | |
2c5a7097 | 521 | $key = 'snap'; |
9bb4abf6 AD |
522 | }else{ |
523 | $key = $isBase ? 'base' : 'current'; | |
524 | } | |
525 | return 1 if $features->{$feature}->{$key}; | |
526 | ||
f7d4064f AD |
527 | return undef; |
528 | } | |
529 | ||
5cbbc78f WB |
530 | sub volume_export_formats { |
531 | my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
532 | return () if defined($snapshot); # lvm-thin only | |
533 | return volume_import_formats($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots); | |
534 | } | |
535 | ||
536 | sub volume_export { | |
537 | my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
538 | die "volume export format $format not available for $class\n" | |
539 | if $format ne 'raw+size'; | |
540 | die "cannot export volumes together with their snapshots in $class\n" | |
541 | if $with_snapshots; | |
542 | die "cannot export a snapshot in $class\n" if defined($snapshot); | |
543 | die "cannot export an incremental stream in $class\n" if defined($base_snapshot); | |
544 | my $file = $class->path($scfg, $volname, $storeid); | |
545 | my $size; | |
546 | # should be faster than querying LVM, also checks for the device file's availability | |
547 | run_command(['/sbin/blockdev', '--getsize64', $file], outfunc => sub { | |
548 | my ($line) = @_; | |
549 | die "unexpected output from /sbin/blockdev: $line\n" if $line !~ /^(\d+)$/; | |
550 | $size = int($1); | |
551 | }); | |
552 | PVE::Storage::Plugin::write_common_header($fh, $size); | |
553 | run_command(['dd', "if=$file", "bs=64k"], output => '>&'.fileno($fh)); | |
554 | } | |
555 | ||
556 | sub volume_import_formats { | |
557 | my ($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots) = @_; | |
558 | return () if $with_snapshots; # not supported | |
559 | return () if defined($base_snapshot); # not supported | |
560 | return ('raw+size'); | |
561 | } | |
562 | ||
563 | sub volume_import { | |
564 | my ($class, $scfg, $storeid, $fh, $volname, $format, $base_snapshot, $with_snapshots) = @_; | |
565 | die "volume import format $format not available for $class\n" | |
566 | if $format ne 'raw+size'; | |
567 | die "cannot import volumes together with their snapshots in $class\n" | |
568 | if $with_snapshots; | |
569 | die "cannot import an incremental stream in $class\n" if defined($base_snapshot); | |
570 | ||
571 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $file_format) = | |
572 | $class->parse_volname($volname); | |
573 | die "cannot import format $format into a file of format $file_format\n" | |
574 | if $file_format ne 'raw'; | |
575 | ||
576 | my $vg = $scfg->{vgname}; | |
577 | my $lvs = lvm_list_volumes($vg); | |
578 | die "volume $vg/$volname already exists\n" | |
579 | if $lvs->{$vg}->{$volname}; | |
580 | ||
581 | my ($size) = PVE::Storage::Plugin::read_common_header($fh); | |
582 | $size = int($size/1024); | |
583 | ||
584 | eval { | |
585 | my $allocname = $class->alloc_image($storeid, $scfg, $vmid, 'raw', $name, $size); | |
586 | if ($allocname ne $volname) { | |
587 | my $oldname = $volname; | |
588 | $volname = $allocname; # Let the cleanup code know what to free | |
589 | die "internal error: unexpected allocated name: '$allocname' != '$oldname'\n"; | |
590 | } | |
591 | my $file = $class->path($scfg, $volname, $storeid) | |
592 | or die "internal error: failed to get path to newly allocated volume $volname\n"; | |
593 | run_command(['dd', "of=$file", 'conv=sparse', 'bs=64k'], | |
594 | input => '<&'.fileno($fh)); | |
595 | }; | |
596 | if (my $err = $@) { | |
597 | eval { $class->free_image($storeid, $scfg, $volname, 0) }; | |
598 | warn $@ if $@; | |
599 | die $err; | |
600 | } | |
601 | } | |
602 | ||
1dc01b9f | 603 | 1; |