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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 $device error"); | |
89 | } | |
90 | ||
91 | sub lvm_vgs { | |
8cccb344 | 92 | my ($includepvs) = @_; |
1dc01b9f DM |
93 | |
94 | my $cmd = ['/sbin/vgs', '--separator', ':', '--noheadings', '--units', 'b', | |
8cccb344 DC |
95 | '--unbuffered', '--nosuffix', '--options']; |
96 | ||
97 | my $cols = [qw(vg_name vg_size vg_free lv_count)]; | |
98 | ||
99 | if ($includepvs) { | |
100 | push @$cols, qw(pv_name pv_size pv_free); | |
101 | } | |
102 | ||
103 | push @$cmd, join(',', @$cols); | |
1dc01b9f DM |
104 | |
105 | my $vgs = {}; | |
106 | eval { | |
107 | run_command($cmd, outfunc => sub { | |
108 | my $line = shift; | |
109 | ||
110 | $line = trim($line); | |
111 | ||
8cccb344 DC |
112 | my ($name, $size, $free, $lvcount, $pvname, $pvsize, $pvfree) = split (':', $line); |
113 | ||
114 | $vgs->{$name} = { size => int ($size), free => int ($free), lvcount => int($lvcount) } | |
115 | if !$vgs->{$name}; | |
1dc01b9f | 116 | |
8cccb344 DC |
117 | if (defined($pvname) && defined($pvsize) && defined($pvfree)) { |
118 | push @{$vgs->{$name}->{pvs}}, { | |
119 | name => $pvname, | |
120 | size => int($pvsize), | |
121 | free => int($pvfree), | |
122 | }; | |
123 | } | |
1dc01b9f DM |
124 | }); |
125 | }; | |
126 | my $err = $@; | |
127 | ||
128 | # just warn (vgs return error code 5 if clvmd does not run) | |
129 | # but output is still OK (list without clustered VGs) | |
130 | warn $err if $err; | |
131 | ||
132 | return $vgs; | |
133 | } | |
134 | ||
3e44cd84 | 135 | sub lvm_list_volumes { |
1dc01b9f DM |
136 | my ($vgname) = @_; |
137 | ||
138 | my $cmd = ['/sbin/lvs', '--separator', ':', '--noheadings', '--units', 'b', | |
139 | '--unbuffered', '--nosuffix', '--options', | |
2c2fd98b | 140 | 'vg_name,lv_name,lv_size,lv_attr,pool_lv,data_percent,metadata_percent,snap_percent,uuid,tags,metadata_size']; |
1dc01b9f DM |
141 | |
142 | push @$cmd, $vgname if $vgname; | |
143 | ||
144 | my $lvs = {}; | |
145 | run_command($cmd, outfunc => sub { | |
146 | my $line = shift; | |
147 | ||
148 | $line = trim($line); | |
149 | ||
2c2fd98b | 150 | my ($vg_name, $lv_name, $lv_size, $lv_attr, $pool_lv, $data_percent, $meta_percent, $snap_percent, $uuid, $tags, $meta_size) = split(':', $line); |
3e44cd84 DM |
151 | return if !$vg_name; |
152 | return if !$lv_name; | |
1dc01b9f | 153 | |
3e44cd84 | 154 | my $lv_type = substr($lv_attr, 0, 1); |
1dc01b9f | 155 | |
3e44cd84 | 156 | my $d = { |
a3f38a64 | 157 | lv_size => int($lv_size), |
3e44cd84 DM |
158 | lv_type => $lv_type, |
159 | }; | |
160 | $d->{pool_lv} = $pool_lv if $pool_lv; | |
7a9dd119 | 161 | $d->{tags} = $tags if $tags; |
3e44cd84 DM |
162 | |
163 | if ($lv_type eq 't') { | |
164 | $data_percent ||= 0; | |
165 | $meta_percent ||= 0; | |
166 | $snap_percent ||= 0; | |
2c2fd98b DC |
167 | $d->{metadata_size} = int($meta_size); |
168 | $d->{metadata_used} = int(($meta_percent * $meta_size)/100); | |
faabe9e2 | 169 | $d->{used} = int(($data_percent * $lv_size)/100); |
1dc01b9f | 170 | } |
3e44cd84 | 171 | $lvs->{$vg_name}->{$lv_name} = $d; |
1dc01b9f DM |
172 | }); |
173 | ||
174 | return $lvs; | |
175 | } | |
176 | ||
5c687bd9 | 177 | # Configuration |
1dc01b9f | 178 | |
1dc01b9f DM |
179 | sub type { |
180 | return 'lvm'; | |
181 | } | |
182 | ||
183 | sub plugindata { | |
184 | return { | |
68b2c18a | 185 | content => [ {images => 1, rootdir => 1}, { images => 1 }], |
1dc01b9f DM |
186 | }; |
187 | } | |
188 | ||
189 | sub properties { | |
190 | return { | |
191 | vgname => { | |
192 | description => "Volume group name.", | |
193 | type => 'string', format => 'pve-storage-vgname', | |
194 | }, | |
195 | base => { | |
196 | description => "Base volume. This volume is automatically activated.", | |
197 | type => 'string', format => 'pve-volume-id', | |
198 | }, | |
199 | saferemove => { | |
200 | description => "Zero-out data when removing LVs.", | |
201 | type => 'boolean', | |
202 | }, | |
399ab2b6 PB |
203 | saferemove_throughput => { |
204 | description => "Wipe throughput (cstream -t parameter value).", | |
205 | type => 'string', | |
206 | }, | |
7a9dd119 FG |
207 | tagged_only => { |
208 | description => "Only use logical volumes tagged with 'pve-vm-ID'.", | |
209 | type => 'boolean', | |
210 | } | |
1dc01b9f DM |
211 | }; |
212 | } | |
213 | ||
214 | sub options { | |
215 | return { | |
216 | vgname => { fixed => 1 }, | |
0423e8c6 | 217 | nodes => { optional => 1 }, |
1dc01b9f DM |
218 | shared => { optional => 1 }, |
219 | disable => { optional => 1 }, | |
0423e8c6 FG |
220 | saferemove => { optional => 1 }, |
221 | saferemove_throughput => { optional => 1 }, | |
1dc01b9f | 222 | content => { optional => 1 }, |
0423e8c6 | 223 | base => { fixed => 1, optional => 1 }, |
7a9dd119 | 224 | tagged_only => { optional => 1 }, |
9edb99a5 | 225 | bwlimit => { optional => 1 }, |
1dc01b9f DM |
226 | }; |
227 | } | |
228 | ||
229 | # Storage implementation | |
230 | ||
f9602323 TL |
231 | sub on_add_hook { |
232 | my ($class, $storeid, $scfg, %param) = @_; | |
233 | ||
234 | if (my $base = $scfg->{base}) { | |
235 | my ($baseid, $volname) = PVE::Storage::parse_volume_id($base); | |
236 | ||
237 | my $cfg = PVE::Storage::config(); | |
238 | my $basecfg = PVE::Storage::storage_config ($cfg, $baseid, 1); | |
239 | die "base storage ID '$baseid' does not exist\n" if !$basecfg; | |
240 | ||
241 | # we only support iscsi for now | |
242 | die "unsupported base type '$basecfg->{type}'" | |
243 | if $basecfg->{type} ne 'iscsi'; | |
244 | ||
245 | my $path = PVE::Storage::path($cfg, $base); | |
246 | ||
247 | PVE::Storage::activate_storage($cfg, $baseid); | |
248 | ||
249 | lvm_create_volume_group($path, $scfg->{vgname}, $scfg->{shared}); | |
250 | } | |
251 | } | |
252 | ||
1dc01b9f DM |
253 | sub parse_volname { |
254 | my ($class, $volname) = @_; | |
255 | ||
5dca5c7c | 256 | PVE::Storage::Plugin::parse_lvm_name($volname); |
1dc01b9f DM |
257 | |
258 | if ($volname =~ m/^(vm-(\d+)-\S+)$/) { | |
7800e84d | 259 | return ('images', $1, $2, undef, undef, undef, 'raw'); |
1dc01b9f DM |
260 | } |
261 | ||
262 | die "unable to parse lvm volume name '$volname'\n"; | |
263 | } | |
264 | ||
452e3ee7 | 265 | sub filesystem_path { |
e67069eb DM |
266 | my ($class, $scfg, $volname, $snapname) = @_; |
267 | ||
268 | die "lvm snapshot is not implemented"if defined($snapname); | |
1dc01b9f DM |
269 | |
270 | my ($vtype, $name, $vmid) = $class->parse_volname($volname); | |
271 | ||
272 | my $vg = $scfg->{vgname}; | |
5c687bd9 | 273 | |
1dc01b9f DM |
274 | my $path = "/dev/$vg/$name"; |
275 | ||
5521b580 | 276 | return wantarray ? ($path, $vmid, $vtype) : $path; |
1dc01b9f DM |
277 | } |
278 | ||
5eab0272 DM |
279 | sub create_base { |
280 | my ($class, $storeid, $scfg, $volname) = @_; | |
281 | ||
282 | die "can't create base images in lvm storage\n"; | |
283 | } | |
284 | ||
285 | sub clone_image { | |
f236eaf8 | 286 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; |
5eab0272 DM |
287 | |
288 | die "can't clone images in lvm storage\n"; | |
289 | } | |
290 | ||
b1378461 | 291 | sub lvm_find_free_diskname { |
c4a29df4 | 292 | my ($lvs, $vg, $storeid, $vmid, $scfg) = @_; |
b1378461 | 293 | |
c4a29df4 | 294 | my $disk_list = [ keys %{$lvs->{$vg}} ]; |
b1378461 | 295 | |
c4a29df4 | 296 | return PVE::Storage::Plugin::get_next_vm_diskname($disk_list, $storeid, $vmid, undef, $scfg); |
b1378461 DM |
297 | } |
298 | ||
1dc01b9f DM |
299 | sub alloc_image { |
300 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
301 | ||
302 | die "unsupported format '$fmt'" if $fmt ne 'raw'; | |
303 | ||
5c687bd9 | 304 | die "illegal name '$name' - sould be 'vm-$vmid-*'\n" |
1dc01b9f DM |
305 | if $name && $name !~ m/^vm-$vmid-/; |
306 | ||
307 | my $vgs = lvm_vgs(); | |
308 | ||
309 | my $vg = $scfg->{vgname}; | |
310 | ||
e8acaa3c | 311 | die "no such volume group '$vg'\n" if !defined ($vgs->{$vg}); |
1dc01b9f DM |
312 | |
313 | my $free = int($vgs->{$vg}->{free}); | |
314 | ||
315 | die "not enough free space ($free < $size)\n" if $free < $size; | |
316 | ||
c4a29df4 | 317 | $name = lvm_find_free_diskname(lvm_list_volumes($vg), $vg, $storeid, $vmid, $scfg) |
1dc01b9f DM |
318 | if !$name; |
319 | ||
320 | my $cmd = ['/sbin/lvcreate', '-aly', '--addtag', "pve-vm-$vmid", '--size', "${size}k", '--name', $name, $vg]; | |
321 | ||
322 | run_command($cmd, errmsg => "lvcreate '$vg/pve-vm-$vmid' error"); | |
323 | ||
324 | return $name; | |
325 | } | |
326 | ||
327 | sub free_image { | |
32437ed2 | 328 | my ($class, $storeid, $scfg, $volname, $isBase) = @_; |
1dc01b9f DM |
329 | |
330 | my $vg = $scfg->{vgname}; | |
399ab2b6 | 331 | |
1dc01b9f DM |
332 | # we need to zero out LVM data for security reasons |
333 | # and to allow thin provisioning | |
334 | ||
335 | my $zero_out_worker = sub { | |
399ab2b6 PB |
336 | print "zero-out data on image $volname (/dev/$vg/del-$volname)\n"; |
337 | ||
338 | # wipe throughput up to 10MB/s by default; may be overwritten with saferemove_throughput | |
339 | my $throughput = '-10485760'; | |
340 | if ($scfg->{saferemove_throughput}) { | |
341 | $throughput = $scfg->{saferemove_throughput}; | |
342 | } | |
343 | ||
344 | my $cmd = [ | |
345 | '/usr/bin/cstream', | |
346 | '-i', '/dev/zero', | |
347 | '-o', "/dev/$vg/del-$volname", | |
348 | '-T', '10', | |
349 | '-v', '1', | |
350 | '-b', '1048576', | |
351 | '-t', "$throughput" | |
352 | ]; | |
353 | eval { run_command($cmd, errmsg => "zero out finished (note: 'No space left on device' is ok here)"); }; | |
1dc01b9f DM |
354 | warn $@ if $@; |
355 | ||
356 | $class->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub { | |
357 | my $cmd = ['/sbin/lvremove', '-f', "$vg/del-$volname"]; | |
358 | run_command($cmd, errmsg => "lvremove '$vg/del-$volname' error"); | |
359 | }); | |
399ab2b6 | 360 | print "successfully removed volume $volname ($vg/del-$volname)\n"; |
1dc01b9f DM |
361 | }; |
362 | ||
399ab2b6 PB |
363 | my $cmd = ['/sbin/lvchange', '-aly', "$vg/$volname"]; |
364 | run_command($cmd, errmsg => "can't activate LV '$vg/$volname' to zero-out its data"); | |
365 | ||
1dc01b9f DM |
366 | if ($scfg->{saferemove}) { |
367 | # avoid long running task, so we only rename here | |
399ab2b6 | 368 | $cmd = ['/sbin/lvrename', $vg, $volname, "del-$volname"]; |
1dc01b9f DM |
369 | run_command($cmd, errmsg => "lvrename '$vg/$volname' error"); |
370 | return $zero_out_worker; | |
371 | } else { | |
372 | my $tmpvg = $scfg->{vgname}; | |
399ab2b6 | 373 | $cmd = ['/sbin/lvremove', '-f', "$tmpvg/$volname"]; |
1dc01b9f DM |
374 | run_command($cmd, errmsg => "lvremove '$tmpvg/$volname' error"); |
375 | } | |
376 | ||
377 | return undef; | |
378 | } | |
379 | ||
7a9dd119 FG |
380 | my $check_tags = sub { |
381 | my ($tags) = @_; | |
382 | ||
383 | return defined($tags) && $tags =~ /(^|,)pve-vm-\d+(,|$)/; | |
384 | }; | |
385 | ||
1dc01b9f DM |
386 | sub list_images { |
387 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
388 | ||
389 | my $vgname = $scfg->{vgname}; | |
390 | ||
3e44cd84 | 391 | $cache->{lvs} = lvm_list_volumes() if !$cache->{lvs}; |
1dc01b9f DM |
392 | |
393 | my $res = []; | |
5c687bd9 | 394 | |
1dc01b9f DM |
395 | if (my $dat = $cache->{lvs}->{$vgname}) { |
396 | ||
397 | foreach my $volname (keys %$dat) { | |
398 | ||
3e44cd84 DM |
399 | next if $volname !~ m/^vm-(\d+)-/; |
400 | my $owner = $1; | |
401 | ||
402 | my $info = $dat->{$volname}; | |
403 | ||
7a9dd119 FG |
404 | next if $scfg->{tagged_only} && !&$check_tags($info->{tags}); |
405 | ||
3e44cd84 | 406 | next if $info->{lv_type} ne '-'; |
1dc01b9f DM |
407 | |
408 | my $volid = "$storeid:$volname"; | |
409 | ||
410 | if ($vollist) { | |
411 | my $found = grep { $_ eq $volid } @$vollist; | |
412 | next if !$found; | |
413 | } else { | |
3e44cd84 | 414 | next if defined($vmid) && ($owner ne $vmid); |
1dc01b9f DM |
415 | } |
416 | ||
3e44cd84 DM |
417 | push @$res, { |
418 | volid => $volid, format => 'raw', size => $info->{lv_size}, vmid => $owner, | |
419 | }; | |
1dc01b9f DM |
420 | } |
421 | } | |
422 | ||
423 | return $res; | |
424 | } | |
425 | ||
426 | sub status { | |
427 | my ($class, $storeid, $scfg, $cache) = @_; | |
428 | ||
429 | $cache->{vgs} = lvm_vgs() if !$cache->{vgs}; | |
430 | ||
431 | my $vgname = $scfg->{vgname}; | |
432 | ||
097a2b2f DM |
433 | if (my $info = $cache->{vgs}->{$vgname}) { |
434 | return ($info->{size}, $info->{free}, $info->{size} - $info->{free}, 1); | |
1dc01b9f DM |
435 | } |
436 | ||
437 | return undef; | |
438 | } | |
439 | ||
440 | sub activate_storage { | |
441 | my ($class, $storeid, $scfg, $cache) = @_; | |
442 | ||
443 | $cache->{vgs} = lvm_vgs() if !$cache->{vgs}; | |
444 | ||
445 | # In LVM2, vgscans take place automatically; | |
446 | # this is just to be sure | |
5c687bd9 | 447 | if ($cache->{vgs} && !$cache->{vgscaned} && |
1dc01b9f DM |
448 | !$cache->{vgs}->{$scfg->{vgname}}) { |
449 | $cache->{vgscaned} = 1; | |
450 | my $cmd = ['/sbin/vgscan', '--ignorelockingfailure', '--mknodes']; | |
451 | eval { run_command($cmd, outfunc => sub {}); }; | |
452 | warn $@ if $@; | |
453 | } | |
454 | ||
455 | # we do not acticate any volumes here ('vgchange -aly') | |
456 | # instead, volumes are activate individually later | |
457 | } | |
458 | ||
459 | sub deactivate_storage { | |
460 | my ($class, $storeid, $scfg, $cache) = @_; | |
461 | ||
462 | my $cmd = ['/sbin/vgchange', '-aln', $scfg->{vgname}]; | |
463 | run_command($cmd, errmsg => "can't deactivate VG '$scfg->{vgname}'"); | |
464 | } | |
465 | ||
466 | sub activate_volume { | |
02e797b8 | 467 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; |
c8943a85 | 468 | #fix me lvmchange is not provided on |
02e797b8 | 469 | my $path = $class->path($scfg, $volname, $snapname); |
1dc01b9f | 470 | |
c8943a85 | 471 | my $lvm_activate_mode = 'ey'; |
1dc01b9f DM |
472 | |
473 | my $cmd = ['/sbin/lvchange', "-a$lvm_activate_mode", $path]; | |
474 | run_command($cmd, errmsg => "can't activate LV '$path'"); | |
475 | } | |
476 | ||
477 | sub deactivate_volume { | |
02e797b8 | 478 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; |
1dc01b9f | 479 | |
02e797b8 | 480 | my $path = $class->path($scfg, $volname, $snapname); |
1dc01b9f DM |
481 | return if ! -b $path; |
482 | ||
483 | my $cmd = ['/sbin/lvchange', '-aln', $path]; | |
484 | run_command($cmd, errmsg => "can't deactivate LV '$path'"); | |
485 | } | |
486 | ||
530defb6 AD |
487 | sub volume_resize { |
488 | my ($class, $scfg, $storeid, $volname, $size, $running) = @_; | |
489 | ||
490 | $size = ($size/1024/1024) . "M"; | |
491 | ||
492 | my $path = $class->path($scfg, $volname); | |
493 | my $cmd = ['/sbin/lvextend', '-L', $size, $path]; | |
49cc7802 TL |
494 | |
495 | $class->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub { | |
496 | run_command($cmd, errmsg => "error resizing volume '$path'"); | |
497 | }); | |
530defb6 AD |
498 | |
499 | return 1; | |
500 | } | |
501 | ||
33818d16 | 502 | sub volume_snapshot { |
f5640e7d | 503 | my ($class, $scfg, $storeid, $volname, $snap) = @_; |
33818d16 AD |
504 | |
505 | die "lvm snapshot is not implemented"; | |
506 | } | |
507 | ||
051e85b8 AD |
508 | sub volume_snapshot_rollback { |
509 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
510 | ||
511 | die "lvm snapshot rollback is not implemented"; | |
512 | } | |
513 | ||
f57e796b AD |
514 | sub volume_snapshot_delete { |
515 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
516 | ||
517 | die "lvm snapshot delete is not implemented"; | |
518 | } | |
519 | ||
f7d4064f AD |
520 | sub volume_has_feature { |
521 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
522 | ||
9bb4abf6 AD |
523 | my $features = { |
524 | copy => { base => 1, current => 1}, | |
525 | }; | |
526 | ||
527 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
528 | $class->parse_volname($volname); | |
529 | ||
530 | my $key = undef; | |
531 | if($snapname){ | |
2c5a7097 | 532 | $key = 'snap'; |
9bb4abf6 AD |
533 | }else{ |
534 | $key = $isBase ? 'base' : 'current'; | |
535 | } | |
536 | return 1 if $features->{$feature}->{$key}; | |
537 | ||
f7d4064f AD |
538 | return undef; |
539 | } | |
540 | ||
5cbbc78f WB |
541 | sub volume_export_formats { |
542 | my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
543 | return () if defined($snapshot); # lvm-thin only | |
544 | return volume_import_formats($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots); | |
545 | } | |
546 | ||
547 | sub volume_export { | |
548 | my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
549 | die "volume export format $format not available for $class\n" | |
550 | if $format ne 'raw+size'; | |
551 | die "cannot export volumes together with their snapshots in $class\n" | |
552 | if $with_snapshots; | |
553 | die "cannot export a snapshot in $class\n" if defined($snapshot); | |
554 | die "cannot export an incremental stream in $class\n" if defined($base_snapshot); | |
555 | my $file = $class->path($scfg, $volname, $storeid); | |
556 | my $size; | |
557 | # should be faster than querying LVM, also checks for the device file's availability | |
558 | run_command(['/sbin/blockdev', '--getsize64', $file], outfunc => sub { | |
559 | my ($line) = @_; | |
560 | die "unexpected output from /sbin/blockdev: $line\n" if $line !~ /^(\d+)$/; | |
561 | $size = int($1); | |
562 | }); | |
563 | PVE::Storage::Plugin::write_common_header($fh, $size); | |
564 | run_command(['dd', "if=$file", "bs=64k"], output => '>&'.fileno($fh)); | |
565 | } | |
566 | ||
567 | sub volume_import_formats { | |
568 | my ($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots) = @_; | |
569 | return () if $with_snapshots; # not supported | |
570 | return () if defined($base_snapshot); # not supported | |
571 | return ('raw+size'); | |
572 | } | |
573 | ||
574 | sub volume_import { | |
575 | my ($class, $scfg, $storeid, $fh, $volname, $format, $base_snapshot, $with_snapshots) = @_; | |
576 | die "volume import format $format not available for $class\n" | |
577 | if $format ne 'raw+size'; | |
578 | die "cannot import volumes together with their snapshots in $class\n" | |
579 | if $with_snapshots; | |
580 | die "cannot import an incremental stream in $class\n" if defined($base_snapshot); | |
581 | ||
582 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $file_format) = | |
583 | $class->parse_volname($volname); | |
584 | die "cannot import format $format into a file of format $file_format\n" | |
585 | if $file_format ne 'raw'; | |
586 | ||
587 | my $vg = $scfg->{vgname}; | |
588 | my $lvs = lvm_list_volumes($vg); | |
589 | die "volume $vg/$volname already exists\n" | |
590 | if $lvs->{$vg}->{$volname}; | |
591 | ||
592 | my ($size) = PVE::Storage::Plugin::read_common_header($fh); | |
593 | $size = int($size/1024); | |
594 | ||
595 | eval { | |
596 | my $allocname = $class->alloc_image($storeid, $scfg, $vmid, 'raw', $name, $size); | |
597 | if ($allocname ne $volname) { | |
598 | my $oldname = $volname; | |
599 | $volname = $allocname; # Let the cleanup code know what to free | |
600 | die "internal error: unexpected allocated name: '$allocname' != '$oldname'\n"; | |
601 | } | |
602 | my $file = $class->path($scfg, $volname, $storeid) | |
603 | or die "internal error: failed to get path to newly allocated volume $volname\n"; | |
604 | run_command(['dd', "of=$file", 'conv=sparse', 'bs=64k'], | |
605 | input => '<&'.fileno($fh)); | |
606 | }; | |
607 | if (my $err = $@) { | |
608 | eval { $class->free_image($storeid, $scfg, $volname, 0) }; | |
609 | warn $@ if $@; | |
610 | die $err; | |
611 | } | |
612 | } | |
613 | ||
1dc01b9f | 614 | 1; |