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