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1 | package PVE::Storage::Plugin; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
6 | use File::chdir; | |
7 | use File::Path; | |
8 | use File::Basename; | |
9 | ||
10 | use PVE::Tools qw(run_command); | |
11 | use PVE::JSONSchema qw(get_standard_option); | |
12 | use PVE::Cluster qw(cfs_register_file); | |
13 | ||
14 | use base qw(PVE::SectionConfig); | |
15 | ||
16 | our @COMMON_TAR_FLAGS = qw( | |
17 | --one-file-system | |
18 | -p --sparse --numeric-owner --acls | |
19 | --xattrs --xattrs-include=user.* --xattrs-include=security.capability | |
20 | --warning=no-file-ignored --warning=no-xattr-write | |
21 | ); | |
22 | ||
23 | our @SHARED_STORAGE = ( | |
24 | 'iscsi', | |
25 | 'nfs', | |
26 | 'cifs', | |
27 | 'rbd', | |
28 | 'cephfs', | |
29 | 'iscsidirect', | |
30 | 'glusterfs', | |
31 | 'zfs', | |
32 | 'drbd'); | |
33 | ||
34 | our $MAX_VOLUMES_PER_GUEST = 1024; | |
35 | ||
36 | cfs_register_file ('storage.cfg', | |
37 | sub { __PACKAGE__->parse_config(@_); }, | |
38 | sub { __PACKAGE__->write_config(@_); }); | |
39 | ||
40 | ||
41 | my $defaultData = { | |
42 | propertyList => { | |
43 | type => { description => "Storage type." }, | |
44 | storage => get_standard_option('pve-storage-id', | |
45 | { completion => \&PVE::Storage::complete_storage }), | |
46 | nodes => get_standard_option('pve-node-list', { optional => 1 }), | |
47 | content => { | |
48 | description => "Allowed content types.\n\nNOTE: the value " . | |
49 | "'rootdir' is used for Containers, and value 'images' for VMs.\n", | |
50 | type => 'string', format => 'pve-storage-content-list', | |
51 | optional => 1, | |
52 | completion => \&PVE::Storage::complete_content_type, | |
53 | }, | |
54 | disable => { | |
55 | description => "Flag to disable the storage.", | |
56 | type => 'boolean', | |
57 | optional => 1, | |
58 | }, | |
59 | maxfiles => { | |
60 | description => "Maximal number of backup files per VM. Use '0' for unlimted.", | |
61 | type => 'integer', | |
62 | minimum => 0, | |
63 | optional => 1, | |
64 | }, | |
65 | shared => { | |
66 | description => "Mark storage as shared.", | |
67 | type => 'boolean', | |
68 | optional => 1, | |
69 | }, | |
70 | 'format' => { | |
71 | description => "Default image format.", | |
72 | type => 'string', format => 'pve-storage-format', | |
73 | optional => 1, | |
74 | }, | |
75 | }, | |
76 | }; | |
77 | ||
78 | sub content_hash_to_string { | |
79 | my $hash = shift; | |
80 | ||
81 | my @cta; | |
82 | foreach my $ct (keys %$hash) { | |
83 | push @cta, $ct if $hash->{$ct}; | |
84 | } | |
85 | ||
86 | return join(',', @cta); | |
87 | } | |
88 | ||
89 | sub valid_content_types { | |
90 | my ($type) = @_; | |
91 | ||
92 | my $def = $defaultData->{plugindata}->{$type}; | |
93 | ||
94 | return {} if !$def; | |
95 | ||
96 | return $def->{content}->[0]; | |
97 | } | |
98 | ||
99 | sub default_format { | |
100 | my ($scfg) = @_; | |
101 | ||
102 | my $type = $scfg->{type}; | |
103 | my $def = $defaultData->{plugindata}->{$type}; | |
104 | ||
105 | my $def_format = 'raw'; | |
106 | my $valid_formats = [ $def_format ]; | |
107 | ||
108 | if (defined($def->{format})) { | |
109 | $def_format = $scfg->{format} || $def->{format}->[1]; | |
110 | $valid_formats = [ sort keys %{$def->{format}->[0]} ]; | |
111 | } | |
112 | ||
113 | return wantarray ? ($def_format, $valid_formats) : $def_format; | |
114 | } | |
115 | ||
116 | PVE::JSONSchema::register_format('pve-storage-path', \&verify_path); | |
117 | sub verify_path { | |
118 | my ($path, $noerr) = @_; | |
119 | ||
120 | # fixme: exclude more shell meta characters? | |
121 | # we need absolute paths | |
122 | if ($path !~ m|^/[^;\(\)]+|) { | |
123 | return undef if $noerr; | |
124 | die "value does not look like a valid absolute path\n"; | |
125 | } | |
126 | return $path; | |
127 | } | |
128 | ||
129 | PVE::JSONSchema::register_format('pve-storage-server', \&verify_server); | |
130 | sub verify_server { | |
131 | my ($server, $noerr) = @_; | |
132 | ||
133 | if (!(PVE::JSONSchema::pve_verify_ip($server, 1) || | |
134 | PVE::JSONSchema::pve_verify_dns_name($server, 1))) | |
135 | { | |
136 | return undef if $noerr; | |
137 | die "value does not look like a valid server name or IP address\n"; | |
138 | } | |
139 | return $server; | |
140 | } | |
141 | ||
142 | PVE::JSONSchema::register_format('pve-storage-vgname', \&parse_lvm_name); | |
143 | sub parse_lvm_name { | |
144 | my ($name, $noerr) = @_; | |
145 | ||
146 | if ($name !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) { | |
147 | return undef if $noerr; | |
148 | die "lvm name '$name' contains illegal characters\n"; | |
149 | } | |
150 | ||
151 | return $name; | |
152 | } | |
153 | ||
154 | # fixme: do we need this | |
155 | #PVE::JSONSchema::register_format('pve-storage-portal', \&verify_portal); | |
156 | #sub verify_portal { | |
157 | # my ($portal, $noerr) = @_; | |
158 | # | |
159 | # # IP with optional port | |
160 | # if ($portal !~ m/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}(:\d+)?$/) { | |
161 | # return undef if $noerr; | |
162 | # die "value does not look like a valid portal address\n"; | |
163 | # } | |
164 | # return $portal; | |
165 | #} | |
166 | ||
167 | PVE::JSONSchema::register_format('pve-storage-portal-dns', \&verify_portal_dns); | |
168 | sub verify_portal_dns { | |
169 | my ($portal, $noerr) = @_; | |
170 | ||
171 | # IP or DNS name with optional port | |
172 | if (!PVE::Tools::parse_host_and_port($portal)) { | |
173 | return undef if $noerr; | |
174 | die "value does not look like a valid portal address\n"; | |
175 | } | |
176 | return $portal; | |
177 | } | |
178 | ||
179 | PVE::JSONSchema::register_format('pve-storage-content', \&verify_content); | |
180 | sub verify_content { | |
181 | my ($ct, $noerr) = @_; | |
182 | ||
183 | my $valid_content = valid_content_types('dir'); # dir includes all types | |
184 | ||
185 | if (!$valid_content->{$ct}) { | |
186 | return undef if $noerr; | |
187 | die "invalid content type '$ct'\n"; | |
188 | } | |
189 | ||
190 | return $ct; | |
191 | } | |
192 | ||
193 | PVE::JSONSchema::register_format('pve-storage-format', \&verify_format); | |
194 | sub verify_format { | |
195 | my ($fmt, $noerr) = @_; | |
196 | ||
197 | if ($fmt !~ m/(raw|qcow2|vmdk|subvol)/) { | |
198 | return undef if $noerr; | |
199 | die "invalid format '$fmt'\n"; | |
200 | } | |
201 | ||
202 | return $fmt; | |
203 | } | |
204 | ||
205 | PVE::JSONSchema::register_format('pve-storage-options', \&verify_options); | |
206 | sub verify_options { | |
207 | my ($value, $noerr) = @_; | |
208 | ||
209 | # mount options (see man fstab) | |
210 | if ($value !~ m/^\S+$/) { | |
211 | return undef if $noerr; | |
212 | die "invalid options '$value'\n"; | |
213 | } | |
214 | ||
215 | return $value; | |
216 | } | |
217 | ||
218 | PVE::JSONSchema::register_format('pve-volume-id', \&parse_volume_id); | |
219 | sub parse_volume_id { | |
220 | my ($volid, $noerr) = @_; | |
221 | ||
222 | if ($volid =~ m/^([a-z][a-z0-9\-\_\.]*[a-z0-9]):(.+)$/i) { | |
223 | return wantarray ? ($1, $2) : $1; | |
224 | } | |
225 | return undef if $noerr; | |
226 | die "unable to parse volume ID '$volid'\n"; | |
227 | } | |
228 | ||
229 | ||
230 | sub private { | |
231 | return $defaultData; | |
232 | } | |
233 | ||
234 | sub parse_section_header { | |
235 | my ($class, $line) = @_; | |
236 | ||
237 | if ($line =~ m/^(\S+):\s*(\S+)\s*$/) { | |
238 | my ($type, $storeid) = (lc($1), $2); | |
239 | my $errmsg = undef; # set if you want to skip whole section | |
240 | eval { PVE::JSONSchema::parse_storage_id($storeid); }; | |
241 | $errmsg = $@ if $@; | |
242 | my $config = {}; # to return additional attributes | |
243 | return ($type, $storeid, $errmsg, $config); | |
244 | } | |
245 | return undef; | |
246 | } | |
247 | ||
248 | sub decode_value { | |
249 | my ($class, $type, $key, $value) = @_; | |
250 | ||
251 | my $def = $defaultData->{plugindata}->{$type}; | |
252 | ||
253 | if ($key eq 'content') { | |
254 | my $valid_content = $def->{content}->[0]; | |
255 | ||
256 | my $res = {}; | |
257 | ||
258 | foreach my $c (PVE::Tools::split_list($value)) { | |
259 | if (!$valid_content->{$c}) { | |
260 | warn "storage does not support content type '$c'\n"; | |
261 | next; | |
262 | } | |
263 | $res->{$c} = 1; | |
264 | } | |
265 | ||
266 | if ($res->{none} && scalar (keys %$res) > 1) { | |
267 | die "unable to combine 'none' with other content types\n"; | |
268 | } | |
269 | ||
270 | return $res; | |
271 | } elsif ($key eq 'format') { | |
272 | my $valid_formats = $def->{format}->[0]; | |
273 | ||
274 | if (!$valid_formats->{$value}) { | |
275 | warn "storage does not support format '$value'\n"; | |
276 | next; | |
277 | } | |
278 | ||
279 | return $value; | |
280 | } elsif ($key eq 'nodes') { | |
281 | my $res = {}; | |
282 | ||
283 | foreach my $node (PVE::Tools::split_list($value)) { | |
284 | if (PVE::JSONSchema::pve_verify_node_name($node)) { | |
285 | $res->{$node} = 1; | |
286 | } | |
287 | } | |
288 | ||
289 | # fixme: | |
290 | # no node restrictions for local storage | |
291 | #if ($storeid && $storeid eq 'local' && scalar(keys(%$res))) { | |
292 | # die "storage '$storeid' does not allow node restrictions\n"; | |
293 | #} | |
294 | ||
295 | return $res; | |
296 | } | |
297 | ||
298 | return $value; | |
299 | } | |
300 | ||
301 | sub encode_value { | |
302 | my ($class, $type, $key, $value) = @_; | |
303 | ||
304 | if ($key eq 'nodes') { | |
305 | return join(',', keys(%$value)); | |
306 | } elsif ($key eq 'content') { | |
307 | my $res = content_hash_to_string($value) || 'none'; | |
308 | return $res; | |
309 | } | |
310 | ||
311 | return $value; | |
312 | } | |
313 | ||
314 | sub parse_config { | |
315 | my ($class, $filename, $raw) = @_; | |
316 | ||
317 | my $cfg = $class->SUPER::parse_config($filename, $raw); | |
318 | my $ids = $cfg->{ids}; | |
319 | ||
320 | # make sure we have a reasonable 'local:' storage | |
321 | # we want 'local' to be always the same 'type' (on all cluster nodes) | |
322 | if (!$ids->{local} || $ids->{local}->{type} ne 'dir' || | |
323 | ($ids->{local}->{path} && $ids->{local}->{path} ne '/var/lib/vz')) { | |
324 | $ids->{local} = { | |
325 | type => 'dir', | |
326 | priority => 0, # force first entry | |
327 | path => '/var/lib/vz', | |
328 | maxfiles => 0, | |
329 | content => { images => 1, rootdir => 1, vztmpl => 1, iso => 1, snippets => 1}, | |
330 | }; | |
331 | } | |
332 | ||
333 | # make sure we have a path | |
334 | $ids->{local}->{path} = '/var/lib/vz' if !$ids->{local}->{path}; | |
335 | ||
336 | # remove node restrictions for local storage | |
337 | delete($ids->{local}->{nodes}); | |
338 | ||
339 | foreach my $storeid (keys %$ids) { | |
340 | my $d = $ids->{$storeid}; | |
341 | my $type = $d->{type}; | |
342 | ||
343 | my $def = $defaultData->{plugindata}->{$type}; | |
344 | ||
345 | if ($def->{content}) { | |
346 | $d->{content} = $def->{content}->[1] if !$d->{content}; | |
347 | } | |
348 | if (grep { $_ eq $type } @SHARED_STORAGE) { | |
349 | $d->{shared} = 1; | |
350 | } | |
351 | } | |
352 | ||
353 | return $cfg; | |
354 | } | |
355 | ||
356 | # Storage implementation | |
357 | ||
358 | # called during addition of storage (before the new storage config got written) | |
359 | # die to abort additon if there are (grave) problems | |
360 | # NOTE: runs in a storage config *locked* context | |
361 | sub on_add_hook { | |
362 | my ($class, $storeid, $scfg, %param) = @_; | |
363 | ||
364 | # do nothing by default | |
365 | } | |
366 | ||
367 | # called during deletion of storage (before the new storage config got written) | |
368 | # and if the activate check on addition fails, to cleanup all storage traces | |
369 | # which on_add_hook may have created. | |
370 | # die to abort deletion if there are (very grave) problems | |
371 | # NOTE: runs in a storage config *locked* context | |
372 | sub on_delete_hook { | |
373 | my ($class, $storeid, $scfg) = @_; | |
374 | ||
375 | # do nothing by default | |
376 | } | |
377 | ||
378 | sub cluster_lock_storage { | |
379 | my ($class, $storeid, $shared, $timeout, $func, @param) = @_; | |
380 | ||
381 | my $res; | |
382 | if (!$shared) { | |
383 | my $lockid = "pve-storage-$storeid"; | |
384 | my $lockdir = "/var/lock/pve-manager"; | |
385 | mkdir $lockdir; | |
386 | $res = PVE::Tools::lock_file("$lockdir/$lockid", $timeout, $func, @param); | |
387 | die $@ if $@; | |
388 | } else { | |
389 | $res = PVE::Cluster::cfs_lock_storage($storeid, $timeout, $func, @param); | |
390 | die $@ if $@; | |
391 | } | |
392 | return $res; | |
393 | } | |
394 | ||
395 | sub parse_name_dir { | |
396 | my $name = shift; | |
397 | ||
398 | if ($name =~ m!^((base-)?[^/\s]+\.(raw|qcow2|vmdk|subvol))$!) { | |
399 | return ($1, $3, $2); # (name, format, isBase) | |
400 | } | |
401 | ||
402 | die "unable to parse volume filename '$name'\n"; | |
403 | } | |
404 | ||
405 | sub parse_volname { | |
406 | my ($class, $volname) = @_; | |
407 | ||
408 | if ($volname =~ m!^(\d+)/(\S+)/(\d+)/(\S+)$!) { | |
409 | my ($basedvmid, $basename) = ($1, $2); | |
410 | parse_name_dir($basename); | |
411 | my ($vmid, $name) = ($3, $4); | |
412 | my (undef, $format, $isBase) = parse_name_dir($name); | |
413 | return ('images', $name, $vmid, $basename, $basedvmid, $isBase, $format); | |
414 | } elsif ($volname =~ m!^(\d+)/(\S+)$!) { | |
415 | my ($vmid, $name) = ($1, $2); | |
416 | my (undef, $format, $isBase) = parse_name_dir($name); | |
417 | return ('images', $name, $vmid, undef, undef, $isBase, $format); | |
418 | } elsif ($volname =~ m!^iso/([^/]+\.[Ii][Ss][Oo])$!) { | |
419 | return ('iso', $1); | |
420 | } elsif ($volname =~ m!^vztmpl/([^/]+\.tar\.[gx]z)$!) { | |
421 | return ('vztmpl', $1); | |
422 | } elsif ($volname =~ m!^rootdir/(\d+)$!) { | |
423 | return ('rootdir', $1, $1); | |
424 | } elsif ($volname =~ m!^backup/([^/]+(\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo)))$!) { | |
425 | my $fn = $1; | |
426 | if ($fn =~ m/^vzdump-(openvz|lxc|qemu)-(\d+)-.+/) { | |
427 | return ('backup', $fn, $2); | |
428 | } | |
429 | return ('backup', $fn); | |
430 | } elsif ($volname =~ m!^snippets/([^/]+)$!) { | |
431 | return ('snippets', $1); | |
432 | } | |
433 | ||
434 | die "unable to parse directory volume name '$volname'\n"; | |
435 | } | |
436 | ||
437 | my $vtype_subdirs = { | |
438 | images => 'images', | |
439 | rootdir => 'private', | |
440 | iso => 'template/iso', | |
441 | vztmpl => 'template/cache', | |
442 | backup => 'dump', | |
443 | snippets => 'snippets', | |
444 | }; | |
445 | ||
446 | sub get_subdir { | |
447 | my ($class, $scfg, $vtype) = @_; | |
448 | ||
449 | my $path = $scfg->{path}; | |
450 | ||
451 | die "storage definintion has no path\n" if !$path; | |
452 | ||
453 | my $subdir = $vtype_subdirs->{$vtype}; | |
454 | ||
455 | die "unknown vtype '$vtype'\n" if !defined($subdir); | |
456 | ||
457 | return "$path/$subdir"; | |
458 | } | |
459 | ||
460 | sub filesystem_path { | |
461 | my ($class, $scfg, $volname, $snapname) = @_; | |
462 | ||
463 | my ($vtype, $name, $vmid, undef, undef, $isBase, $format) = | |
464 | $class->parse_volname($volname); | |
465 | ||
466 | # Note: qcow2/qed has internal snapshot, so path is always | |
467 | # the same (with or without snapshot => same file). | |
468 | die "can't snapshot this image format\n" | |
469 | if defined($snapname) && $format !~ m/^(qcow2|qed)$/; | |
470 | ||
471 | my $dir = $class->get_subdir($scfg, $vtype); | |
472 | ||
473 | $dir .= "/$vmid" if $vtype eq 'images'; | |
474 | ||
475 | my $path = "$dir/$name"; | |
476 | ||
477 | return wantarray ? ($path, $vmid, $vtype) : $path; | |
478 | } | |
479 | ||
480 | sub path { | |
481 | my ($class, $scfg, $volname, $storeid, $snapname) = @_; | |
482 | ||
483 | return $class->filesystem_path($scfg, $volname, $snapname); | |
484 | } | |
485 | ||
486 | sub create_base { | |
487 | my ($class, $storeid, $scfg, $volname) = @_; | |
488 | ||
489 | # this only works for file based storage types | |
490 | die "storage definition has no path\n" if !$scfg->{path}; | |
491 | ||
492 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $format) = | |
493 | $class->parse_volname($volname); | |
494 | ||
495 | die "create_base on wrong vtype '$vtype'\n" if $vtype ne 'images'; | |
496 | ||
497 | die "create_base not possible with base image\n" if $isBase; | |
498 | ||
499 | my $path = $class->filesystem_path($scfg, $volname); | |
500 | ||
501 | my ($size, undef, $used, $parent) = file_size_info($path); | |
502 | die "file_size_info on '$volname' failed\n" if !($format && defined($size)); | |
503 | ||
504 | die "volname '$volname' contains wrong information about parent\n" | |
505 | if $basename && (!$parent || $parent ne "../$basevmid/$basename"); | |
506 | ||
507 | my $newname = $name; | |
508 | $newname =~ s/^vm-/base-/; | |
509 | ||
510 | my $newvolname = $basename ? "$basevmid/$basename/$vmid/$newname" : | |
511 | "$vmid/$newname"; | |
512 | ||
513 | my $newpath = $class->filesystem_path($scfg, $newvolname); | |
514 | ||
515 | die "file '$newpath' already exists\n" if -f $newpath; | |
516 | ||
517 | rename($path, $newpath) || | |
518 | die "rename '$path' to '$newpath' failed - $!\n"; | |
519 | ||
520 | # We try to protect base volume | |
521 | ||
522 | chmod(0444, $newpath); # nobody should write anything | |
523 | ||
524 | # also try to set immutable flag | |
525 | eval { run_command(['/usr/bin/chattr', '+i', $newpath]); }; | |
526 | warn $@ if $@; | |
527 | ||
528 | return $newvolname; | |
529 | } | |
530 | ||
531 | my $get_vm_disk_number = sub { | |
532 | my ($disk_name, $scfg, $vmid, $suffix) = @_; | |
533 | ||
534 | my $disk_regex = qr/(vm|base)-$vmid-disk-(\d+)$suffix/; | |
535 | ||
536 | my $type = $scfg->{type}; | |
537 | my $def = { %{$defaultData->{plugindata}->{$type}} }; | |
538 | ||
539 | my $valid = $def->{format}[0]; | |
540 | if ($valid->{subvol}) { | |
541 | $disk_regex = qr/(vm|base|subvol|basevol)-$vmid-disk-(\d+)/; | |
542 | } | |
543 | ||
544 | if ($disk_name =~ m/$disk_regex/) { | |
545 | return $2; | |
546 | } | |
547 | ||
548 | return undef; | |
549 | }; | |
550 | ||
551 | sub get_next_vm_diskname { | |
552 | my ($disk_list, $storeid, $vmid, $fmt, $scfg, $add_fmt_suffix) = @_; | |
553 | ||
554 | $fmt //= ''; | |
555 | my $prefix = ($fmt eq 'subvol') ? 'subvol' : 'vm'; | |
556 | my $suffix = $add_fmt_suffix ? ".$fmt" : ''; | |
557 | ||
558 | my $disk_ids = {}; | |
559 | foreach my $disk (@$disk_list) { | |
560 | my $disknum = $get_vm_disk_number->($disk, $scfg, $vmid, $suffix); | |
561 | $disk_ids->{$disknum} = 1 if defined($disknum); | |
562 | } | |
563 | ||
564 | for (my $i = 0; $i < $MAX_VOLUMES_PER_GUEST; $i++) { | |
565 | if (!$disk_ids->{$i}) { | |
566 | return "$prefix-$vmid-disk-$i$suffix"; | |
567 | } | |
568 | } | |
569 | ||
570 | die "unable to allocate an image name for VM $vmid in storage '$storeid'\n" | |
571 | } | |
572 | ||
573 | my $find_free_diskname = sub { | |
574 | my ($imgdir, $vmid, $fmt, $scfg) = @_; | |
575 | ||
576 | my $disk_list = []; | |
577 | ||
578 | if (defined(my $dh = IO::Dir->new($imgdir))) { | |
579 | @$disk_list = $dh->read(); | |
580 | $dh->close(); | |
581 | } | |
582 | ||
583 | return get_next_vm_diskname($disk_list, $imgdir, $vmid, $fmt, $scfg, 1); | |
584 | }; | |
585 | ||
586 | sub clone_image { | |
587 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; | |
588 | ||
589 | # this only works for file based storage types | |
590 | die "storage definintion has no path\n" if !$scfg->{path}; | |
591 | ||
592 | my ($vtype, $basename, $basevmid, undef, undef, $isBase, $format) = | |
593 | $class->parse_volname($volname); | |
594 | ||
595 | die "clone_image on wrong vtype '$vtype'\n" if $vtype ne 'images'; | |
596 | ||
597 | die "this storage type does not support clone_image on snapshot\n" if $snap; | |
598 | ||
599 | die "this storage type does not support clone_image on subvolumes\n" if $format eq 'subvol'; | |
600 | ||
601 | die "clone_image only works on base images\n" if !$isBase; | |
602 | ||
603 | my $imagedir = $class->get_subdir($scfg, 'images'); | |
604 | $imagedir .= "/$vmid"; | |
605 | ||
606 | mkpath $imagedir; | |
607 | ||
608 | my $name = $find_free_diskname->($imagedir, $vmid, "qcow2", $scfg); | |
609 | ||
610 | warn "clone $volname: $vtype, $name, $vmid to $name (base=../$basevmid/$basename)\n"; | |
611 | ||
612 | my $newvol = "$basevmid/$basename/$vmid/$name"; | |
613 | ||
614 | my $path = $class->filesystem_path($scfg, $newvol); | |
615 | ||
616 | # Note: we use relative paths, so we need to call chdir before qemu-img | |
617 | eval { | |
618 | local $CWD = $imagedir; | |
619 | ||
620 | my $cmd = ['/usr/bin/qemu-img', 'create', '-b', "../$basevmid/$basename", | |
621 | '-f', 'qcow2', $path]; | |
622 | ||
623 | run_command($cmd); | |
624 | }; | |
625 | my $err = $@; | |
626 | ||
627 | die $err if $err; | |
628 | ||
629 | return $newvol; | |
630 | } | |
631 | ||
632 | sub alloc_image { | |
633 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
634 | ||
635 | my $imagedir = $class->get_subdir($scfg, 'images'); | |
636 | $imagedir .= "/$vmid"; | |
637 | ||
638 | mkpath $imagedir; | |
639 | ||
640 | $name = $find_free_diskname->($imagedir, $vmid, $fmt, $scfg) if !$name; | |
641 | ||
642 | my (undef, $tmpfmt) = parse_name_dir($name); | |
643 | ||
644 | die "illegal name '$name' - wrong extension for format ('$tmpfmt != '$fmt')\n" | |
645 | if $tmpfmt ne $fmt; | |
646 | ||
647 | my $path = "$imagedir/$name"; | |
648 | ||
649 | die "disk image '$path' already exists\n" if -e $path; | |
650 | ||
651 | if ($fmt eq 'subvol') { | |
652 | # only allow this if size = 0, so that user knows what he is doing | |
653 | die "storage does not support subvol quotas\n" if $size != 0; | |
654 | ||
655 | my $old_umask = umask(0022); | |
656 | my $err; | |
657 | mkdir($path) or $err = "unable to create subvol '$path' - $!\n"; | |
658 | umask $old_umask; | |
659 | die $err if $err; | |
660 | } else { | |
661 | my $cmd = ['/usr/bin/qemu-img', 'create']; | |
662 | ||
663 | push @$cmd, '-o', 'preallocation=metadata' if $fmt eq 'qcow2'; | |
664 | ||
665 | push @$cmd, '-f', $fmt, $path, "${size}K"; | |
666 | ||
667 | eval { run_command($cmd, errmsg => "unable to create image"); }; | |
668 | if ($@) { | |
669 | unlink $path; | |
670 | rmdir $imagedir; | |
671 | die "$@"; | |
672 | } | |
673 | } | |
674 | ||
675 | return "$vmid/$name"; | |
676 | } | |
677 | ||
678 | sub free_image { | |
679 | my ($class, $storeid, $scfg, $volname, $isBase, $format) = @_; | |
680 | ||
681 | my $path = $class->filesystem_path($scfg, $volname); | |
682 | ||
683 | if ($isBase) { | |
684 | # try to remove immutable flag | |
685 | eval { run_command(['/usr/bin/chattr', '-i', $path]); }; | |
686 | warn $@ if $@; | |
687 | } | |
688 | ||
689 | if (defined($format) && ($format eq 'subvol')) { | |
690 | File::Path::remove_tree($path); | |
691 | } else { | |
692 | if (!(-f $path || -l $path)) { | |
693 | warn "disk image '$path' does not exists\n"; | |
694 | return undef; | |
695 | } | |
696 | ||
697 | unlink($path) || die "unlink '$path' failed - $!\n"; | |
698 | } | |
699 | ||
700 | # try to cleanup directory to not clutter storage with empty $vmid dirs if | |
701 | # all images from a guest got deleted | |
702 | my $dir = dirname($path); | |
703 | rmdir($dir); | |
704 | ||
705 | return undef; | |
706 | } | |
707 | ||
708 | sub file_size_info { | |
709 | my ($filename, $timeout) = @_; | |
710 | ||
711 | if (-d $filename) { | |
712 | return wantarray ? (0, 'subvol', 0, undef) : 1; | |
713 | } | |
714 | ||
715 | my $cmd = ['/usr/bin/qemu-img', 'info', $filename]; | |
716 | ||
717 | my $format; | |
718 | my $parent; | |
719 | my $size = 0; | |
720 | my $used = 0; | |
721 | ||
722 | eval { | |
723 | run_command($cmd, timeout => $timeout, outfunc => sub { | |
724 | my $line = shift; | |
725 | if ($line =~ m/^file format:\s+(\S+)\s*$/) { | |
726 | $format = $1; | |
727 | } elsif ($line =~ m/^backing file:\s(\S+)\s/) { | |
728 | $parent = $1; | |
729 | } elsif ($line =~ m/^virtual size:\s\S+\s+\((\d+)\s+bytes\)$/) { | |
730 | $size = int($1); | |
731 | } elsif ($line =~ m/^disk size:\s+(\d+(.\d+)?)([KMGT])\s*$/) { | |
732 | $used = $1; | |
733 | my $u = $3; | |
734 | ||
735 | $used *= 1024 if $u eq 'K'; | |
736 | $used *= (1024*1024) if $u eq 'M'; | |
737 | $used *= (1024*1024*1024) if $u eq 'G'; | |
738 | $used *= (1024*1024*1024*1024) if $u eq 'T'; | |
739 | ||
740 | $used = int($used); | |
741 | } | |
742 | }); | |
743 | }; | |
744 | ||
745 | return wantarray ? ($size, $format, $used, $parent) : $size; | |
746 | } | |
747 | ||
748 | sub volume_size_info { | |
749 | my ($class, $scfg, $storeid, $volname, $timeout) = @_; | |
750 | my $path = $class->filesystem_path($scfg, $volname); | |
751 | return file_size_info($path, $timeout); | |
752 | ||
753 | } | |
754 | ||
755 | sub volume_resize { | |
756 | my ($class, $scfg, $storeid, $volname, $size, $running) = @_; | |
757 | ||
758 | die "can't resize this image format\n" if $volname !~ m/\.(raw|qcow2)$/; | |
759 | ||
760 | return 1 if $running; | |
761 | ||
762 | my $path = $class->filesystem_path($scfg, $volname); | |
763 | ||
764 | my $format = ($class->parse_volname($volname))[6]; | |
765 | ||
766 | my $cmd = ['/usr/bin/qemu-img', 'resize', '-f', $format, $path , $size]; | |
767 | ||
768 | run_command($cmd, timeout => 10); | |
769 | ||
770 | return undef; | |
771 | } | |
772 | ||
773 | sub volume_snapshot { | |
774 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
775 | ||
776 | die "can't snapshot this image format\n" if $volname !~ m/\.(qcow2|qed)$/; | |
777 | ||
778 | my $path = $class->filesystem_path($scfg, $volname); | |
779 | ||
780 | my $cmd = ['/usr/bin/qemu-img', 'snapshot','-c', $snap, $path]; | |
781 | ||
782 | run_command($cmd); | |
783 | ||
784 | return undef; | |
785 | } | |
786 | ||
787 | sub volume_rollback_is_possible { | |
788 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
789 | ||
790 | return 1; | |
791 | } | |
792 | ||
793 | sub volume_snapshot_rollback { | |
794 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
795 | ||
796 | die "can't rollback snapshot this image format\n" if $volname !~ m/\.(qcow2|qed)$/; | |
797 | ||
798 | my $path = $class->filesystem_path($scfg, $volname); | |
799 | ||
800 | my $cmd = ['/usr/bin/qemu-img', 'snapshot','-a', $snap, $path]; | |
801 | ||
802 | run_command($cmd); | |
803 | ||
804 | return undef; | |
805 | } | |
806 | ||
807 | sub volume_snapshot_delete { | |
808 | my ($class, $scfg, $storeid, $volname, $snap, $running) = @_; | |
809 | ||
810 | die "can't delete snapshot for this image format\n" if $volname !~ m/\.(qcow2|qed)$/; | |
811 | ||
812 | return 1 if $running; | |
813 | ||
814 | my $path = $class->filesystem_path($scfg, $volname); | |
815 | ||
816 | $class->deactivate_volume($storeid, $scfg, $volname, $snap, {}); | |
817 | ||
818 | my $cmd = ['/usr/bin/qemu-img', 'snapshot','-d', $snap, $path]; | |
819 | ||
820 | run_command($cmd); | |
821 | ||
822 | return undef; | |
823 | } | |
824 | ||
825 | sub storage_can_replicate { | |
826 | my ($class, $scfg, $storeid, $format) = @_; | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | sub volume_has_feature { | |
832 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
833 | ||
834 | my $features = { | |
835 | snapshot => { current => { qcow2 => 1}, snap => { qcow2 => 1} }, | |
836 | clone => { base => {qcow2 => 1, raw => 1, vmdk => 1} }, | |
837 | template => { current => {qcow2 => 1, raw => 1, vmdk => 1, subvol => 1} }, | |
838 | copy => { base => {qcow2 => 1, raw => 1, vmdk => 1}, | |
839 | current => {qcow2 => 1, raw => 1, vmdk => 1}, | |
840 | snap => {qcow2 => 1} }, | |
841 | sparseinit => { base => {qcow2 => 1, raw => 1, vmdk => 1}, | |
842 | current => {qcow2 => 1, raw => 1, vmdk => 1} }, | |
843 | }; | |
844 | ||
845 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $format) = | |
846 | $class->parse_volname($volname); | |
847 | ||
848 | my $key = undef; | |
849 | if($snapname){ | |
850 | $key = 'snap'; | |
851 | }else{ | |
852 | $key = $isBase ? 'base' : 'current'; | |
853 | } | |
854 | ||
855 | return 1 if defined($features->{$feature}->{$key}->{$format}); | |
856 | ||
857 | return undef; | |
858 | } | |
859 | ||
860 | sub list_images { | |
861 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
862 | ||
863 | my $imagedir = $class->get_subdir($scfg, 'images'); | |
864 | ||
865 | my ($defFmt, $vaidFmts) = default_format($scfg); | |
866 | my $fmts = join ('|', @$vaidFmts); | |
867 | ||
868 | my $res = []; | |
869 | ||
870 | foreach my $fn (<$imagedir/[0-9][0-9]*/*>) { | |
871 | ||
872 | next if $fn !~ m!^(/.+/(\d+)/([^/]+\.($fmts)))$!; | |
873 | $fn = $1; # untaint | |
874 | ||
875 | my $owner = $2; | |
876 | my $name = $3; | |
877 | ||
878 | next if !$vollist && defined($vmid) && ($owner ne $vmid); | |
879 | ||
880 | my ($size, $format, $used, $parent) = file_size_info($fn); | |
881 | next if !($format && defined($size)); | |
882 | ||
883 | my $volid; | |
884 | if ($parent && $parent =~ m!^../(\d+)/([^/]+\.($fmts))$!) { | |
885 | my ($basevmid, $basename) = ($1, $2); | |
886 | $volid = "$storeid:$basevmid/$basename/$owner/$name"; | |
887 | } else { | |
888 | $volid = "$storeid:$owner/$name"; | |
889 | } | |
890 | ||
891 | if ($vollist) { | |
892 | my $found = grep { $_ eq $volid } @$vollist; | |
893 | next if !$found; | |
894 | } | |
895 | ||
896 | push @$res, { | |
897 | volid => $volid, format => $format, | |
898 | size => $size, vmid => $owner, used => $used, parent => $parent | |
899 | }; | |
900 | } | |
901 | ||
902 | return $res; | |
903 | } | |
904 | ||
905 | # list templates ($tt = <iso|vztmpl|backup|snippets>) | |
906 | my $get_subdir_files = sub { | |
907 | my ($sid, $path, $tt, $vmid) = @_; | |
908 | ||
909 | my $res = []; | |
910 | ||
911 | foreach my $fn (<$path/*>) { | |
912 | ||
913 | next if -d $fn; | |
914 | ||
915 | my $info; | |
916 | ||
917 | if ($tt eq 'iso') { | |
918 | next if $fn !~ m!/([^/]+\.iso)$!i; | |
919 | ||
920 | $info = { volid => "$sid:iso/$1", format => 'iso' }; | |
921 | ||
922 | } elsif ($tt eq 'vztmpl') { | |
923 | next if $fn !~ m!/([^/]+\.tar\.([gx]z))$!; | |
924 | ||
925 | $info = { volid => "$sid:vztmpl/$1", format => "t$2" }; | |
926 | ||
927 | } elsif ($tt eq 'backup') { | |
928 | next if $fn !~ m!/([^/]+\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo))$!; | |
929 | next if defined($vmid) && $fn !~ m/\S+-$vmid-\S+/; | |
930 | ||
931 | $info = { volid => "$sid:backup/$1", format => $2 }; | |
932 | ||
933 | } elsif ($tt eq 'snippets') { | |
934 | ||
935 | $info = { | |
936 | volid => "$sid:snippets/". basename($fn), | |
937 | format => 'snippet', | |
938 | }; | |
939 | } | |
940 | ||
941 | $info->{size} = -s $fn // 0; | |
942 | ||
943 | push @$res, $info; | |
944 | } | |
945 | ||
946 | return $res; | |
947 | }; | |
948 | ||
949 | sub list_volumes { | |
950 | my ($class, $storeid, $scfg, $vmid, $content_types) = @_; | |
951 | ||
952 | my $res = []; | |
953 | ||
954 | foreach my $ct (@$content_types) { | |
955 | my $data; | |
956 | ||
957 | my $path = $class->get_subdir($scfg, $ct); | |
958 | ||
959 | if ($ct eq 'images') { | |
960 | $data = $class->list_images($storeid, $scfg, $vmid); | |
961 | } elsif ($ct eq 'iso' && !defined($vmid)) { | |
962 | $data = $get_subdir_files->($storeid, $path, 'iso'); | |
963 | } elsif ($ct eq 'vztmpl'&& !defined($vmid)) { | |
964 | $data = $get_subdir_files->($storeid, $path, 'vztmpl'); | |
965 | } elsif ($ct eq 'backup') { | |
966 | $data = $get_subdir_files->($storeid, $path, 'backup', $vmid); | |
967 | } elsif ($ct eq 'snippets') { | |
968 | $data = $get_subdir_files->($storeid, $path, 'snippets'); | |
969 | } | |
970 | ||
971 | next if !$data; | |
972 | ||
973 | foreach my $item (@$data) { | |
974 | $item->{content} = $ct; | |
975 | push @$res, $item; | |
976 | } | |
977 | } | |
978 | ||
979 | return $res; | |
980 | } | |
981 | ||
982 | sub status { | |
983 | my ($class, $storeid, $scfg, $cache) = @_; | |
984 | ||
985 | my $path = $scfg->{path}; | |
986 | ||
987 | die "storage definintion has no path\n" if !$path; | |
988 | ||
989 | my $timeout = 2; | |
990 | my $res = PVE::Tools::df($path, $timeout); | |
991 | ||
992 | return undef if !$res || !$res->{total}; | |
993 | ||
994 | return ($res->{total}, $res->{avail}, $res->{used}, 1); | |
995 | } | |
996 | ||
997 | sub volume_snapshot_list { | |
998 | my ($class, $scfg, $storeid, $volname) = @_; | |
999 | ||
1000 | # implement in subclass | |
1001 | die "Volume_snapshot_list is not implemented for $class"; | |
1002 | ||
1003 | # return an empty array if dataset does not exist. | |
1004 | } | |
1005 | ||
1006 | sub activate_storage { | |
1007 | my ($class, $storeid, $scfg, $cache) = @_; | |
1008 | ||
1009 | my $path = $scfg->{path}; | |
1010 | ||
1011 | die "storage definintion has no path\n" if !$path; | |
1012 | ||
1013 | # this path test may hang indefinitely on unresponsive mounts | |
1014 | my $timeout = 2; | |
1015 | if (! PVE::Tools::run_fork_with_timeout($timeout, sub {-d $path})) { | |
1016 | die "unable to activate storage '$storeid' - " . | |
1017 | "directory '$path' does not exist or is unreachable\n"; | |
1018 | } | |
1019 | ||
1020 | ||
1021 | return if defined($scfg->{mkdir}) && !$scfg->{mkdir}; | |
1022 | ||
1023 | if (defined($scfg->{content})) { | |
1024 | foreach my $vtype (keys %$vtype_subdirs) { | |
1025 | # OpenVZMigrate uses backup (dump) dir | |
1026 | if (defined($scfg->{content}->{$vtype}) || | |
1027 | ($vtype eq 'backup' && defined($scfg->{content}->{'rootdir'}))) { | |
1028 | my $subdir = $class->get_subdir($scfg, $vtype); | |
1029 | mkpath $subdir if $subdir ne $path; | |
1030 | } | |
1031 | } | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | sub deactivate_storage { | |
1036 | my ($class, $storeid, $scfg, $cache) = @_; | |
1037 | ||
1038 | # do nothing by default | |
1039 | } | |
1040 | ||
1041 | sub map_volume { | |
1042 | my ($class, $storeid, $scfg, $volname, $snapname) = @_; | |
1043 | ||
1044 | my ($path) = $class->path($scfg, $volname, $storeid, $snapname); | |
1045 | return $path; | |
1046 | } | |
1047 | ||
1048 | sub unmap_volume { | |
1049 | my ($class, $storeid, $scfg, $volname, $snapname) = @_; | |
1050 | ||
1051 | return 1; | |
1052 | } | |
1053 | ||
1054 | sub activate_volume { | |
1055 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; | |
1056 | ||
1057 | my $path = $class->filesystem_path($scfg, $volname, $snapname); | |
1058 | ||
1059 | # check is volume exists | |
1060 | if ($scfg->{path}) { | |
1061 | die "volume '$storeid:$volname' does not exist\n" if ! -e $path; | |
1062 | } else { | |
1063 | die "volume '$storeid:$volname' does not exist\n" if ! -b $path; | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | sub deactivate_volume { | |
1068 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; | |
1069 | ||
1070 | # do nothing by default | |
1071 | } | |
1072 | ||
1073 | sub check_connection { | |
1074 | my ($class, $storeid, $scfg) = @_; | |
1075 | # do nothing by default | |
1076 | return 1; | |
1077 | } | |
1078 | ||
1079 | # Import/Export interface: | |
1080 | # Any path based storage is assumed to support 'raw' and 'tar' streams, so | |
1081 | # the default implementations will return this if $scfg->{path} is set, | |
1082 | # mimicking the old PVE::Storage::storage_migrate() function. | |
1083 | # | |
1084 | # Plugins may fall back to PVE::Storage::Plugin::volume_{export,import}... | |
1085 | # functions in case the format doesn't match their specialized | |
1086 | # implementations to reuse the raw/tar code. | |
1087 | # | |
1088 | # Format specification: | |
1089 | # The following formats are all prefixed with image information in the form | |
1090 | # of a 64 bit little endian unsigned integer (pack('Q<')) in order to be able | |
1091 | # to preallocate the image on storages which require it. | |
1092 | # | |
1093 | # raw+size: (image files only) | |
1094 | # A raw binary data stream such as produced via `dd if=TheImageFile`. | |
1095 | # qcow2+size, vmdk: (image files only) | |
1096 | # A raw qcow2/vmdk/... file such as produced via `dd if=some.qcow2` for | |
1097 | # files which are already in qcow2 format, or via `qemu-img convert`. | |
1098 | # Note that these formats are only valid with $with_snapshots being true. | |
1099 | # tar+size: (subvolumes only) | |
1100 | # A GNU tar stream containing just the inner contents of the subvolume. | |
1101 | # This does not distinguish between the contents of a privileged or | |
1102 | # unprivileged container. In other words, this is from the root user | |
1103 | # namespace's point of view with no uid-mapping in effect. | |
1104 | # As produced via `tar -C vm-100-disk-1.subvol -cpf TheOutputFile.dat .` | |
1105 | ||
1106 | # Plugins may reuse these helpers. Changes to the header format should be | |
1107 | # reflected by changes to the function prototypes. | |
1108 | sub write_common_header($$) { | |
1109 | my ($fh, $image_size_in_bytes) = @_; | |
1110 | syswrite($fh, pack("Q<", $image_size_in_bytes), 8); | |
1111 | } | |
1112 | ||
1113 | sub read_common_header($) { | |
1114 | my ($fh) = @_; | |
1115 | sysread($fh, my $size, 8); | |
1116 | $size = unpack('Q<', $size); | |
1117 | die "got a bad size (not a multiple of 1K)\n" if ($size&1023); | |
1118 | # Size is in bytes! | |
1119 | return $size; | |
1120 | } | |
1121 | ||
1122 | # Export a volume into a file handle as a stream of desired format. | |
1123 | sub volume_export { | |
1124 | my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
1125 | if ($scfg->{path} && !defined($snapshot) && !defined($base_snapshot)) { | |
1126 | my $file = $class->path($scfg, $volname, $storeid) | |
1127 | or goto unsupported; | |
1128 | my ($size, $file_format) = file_size_info($file); | |
1129 | ||
1130 | if ($format eq 'raw+size') { | |
1131 | goto unsupported if $with_snapshots || $file_format eq 'subvol'; | |
1132 | write_common_header($fh, $size); | |
1133 | if ($file_format eq 'raw') { | |
1134 | run_command(['dd', "if=$file", "bs=4k"], output => '>&'.fileno($fh)); | |
1135 | } else { | |
1136 | run_command(['qemu-img', 'convert', '-f', $file_format, '-O', 'raw', $file, '/dev/stdout'], | |
1137 | output => '>&'.fileno($fh)); | |
1138 | } | |
1139 | return; | |
1140 | } elsif ($format =~ /^(qcow2|vmdk)\+size$/) { | |
1141 | my $data_format = $1; | |
1142 | goto unsupported if !$with_snapshots || $file_format ne $data_format; | |
1143 | write_common_header($fh, $size); | |
1144 | run_command(['dd', "if=$file", "bs=4k"], output => '>&'.fileno($fh)); | |
1145 | return; | |
1146 | } elsif ($format eq 'tar+size') { | |
1147 | goto unsupported if $file_format ne 'subvol'; | |
1148 | write_common_header($fh, $size); | |
1149 | run_command(['tar', @COMMON_TAR_FLAGS, '-cf', '-', '-C', $file, '.'], | |
1150 | output => '>&'.fileno($fh)); | |
1151 | return; | |
1152 | } | |
1153 | } | |
1154 | unsupported: | |
1155 | die "volume export format $format not available for $class"; | |
1156 | } | |
1157 | ||
1158 | sub volume_export_formats { | |
1159 | my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
1160 | if ($scfg->{path} && !defined($snapshot) && !defined($base_snapshot)) { | |
1161 | my $file = $class->path($scfg, $volname, $storeid) | |
1162 | or return; | |
1163 | my ($size, $format) = file_size_info($file); | |
1164 | ||
1165 | if ($with_snapshots) { | |
1166 | return ($format.'+size') if ($format eq 'qcow2' || $format eq 'vmdk'); | |
1167 | return (); | |
1168 | } | |
1169 | return ('tar+size') if $format eq 'subvol'; | |
1170 | return ('raw+size'); | |
1171 | } | |
1172 | return (); | |
1173 | } | |
1174 | ||
1175 | # Import data from a stream, creating a new or replacing or adding to an existing volume. | |
1176 | sub volume_import { | |
1177 | my ($class, $scfg, $storeid, $fh, $volname, $format, $base_snapshot, $with_snapshots) = @_; | |
1178 | ||
1179 | die "volume import format '$format' not available for $class\n" | |
1180 | if $format !~ /^(raw|tar|qcow2|vmdk)\+size$/; | |
1181 | my $data_format = $1; | |
1182 | ||
1183 | die "format $format cannot be imported without snapshots\n" | |
1184 | if !$with_snapshots && ($data_format eq 'qcow2' || $data_format eq 'vmdk'); | |
1185 | die "format $format cannot be imported with snapshots\n" | |
1186 | if $with_snapshots && ($data_format eq 'raw' || $data_format eq 'tar'); | |
1187 | ||
1188 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $file_format) = | |
1189 | $class->parse_volname($volname); | |
1190 | ||
1191 | # XXX: Should we bother with conversion routines at this level? This won't | |
1192 | # happen without manual CLI usage, so for now we just error out... | |
1193 | die "cannot import format $format into a file of format $file_format\n" | |
1194 | if $data_format ne $file_format && !($data_format eq 'tar' && $file_format eq 'subvol'); | |
1195 | ||
1196 | # Check for an existing file first since interrupting alloc_image doesn't | |
1197 | # free it. | |
1198 | my $file = $class->path($scfg, $volname, $storeid); | |
1199 | die "file '$file' already exists\n" if -e $file; | |
1200 | ||
1201 | my ($size) = read_common_header($fh); | |
1202 | $size = int($size/1024); | |
1203 | ||
1204 | eval { | |
1205 | my $allocname = $class->alloc_image($storeid, $scfg, $vmid, $file_format, $name, $size); | |
1206 | if ($allocname ne $volname) { | |
1207 | my $oldname = $volname; | |
1208 | $volname = $allocname; # Let the cleanup code know what to free | |
1209 | die "internal error: unexpected allocated name: '$allocname' != '$oldname'\n"; | |
1210 | } | |
1211 | my $file = $class->path($scfg, $volname, $storeid) | |
1212 | or die "internal error: failed to get path to newly allocated volume $volname\n"; | |
1213 | if ($data_format eq 'raw' || $data_format eq 'qcow2' || $data_format eq 'vmdk') { | |
1214 | run_command(['dd', "of=$file", 'conv=sparse', 'bs=64k'], | |
1215 | input => '<&'.fileno($fh)); | |
1216 | } elsif ($data_format eq 'tar') { | |
1217 | run_command(['tar', @COMMON_TAR_FLAGS, '-C', $file, '-xf', '-'], | |
1218 | input => '<&'.fileno($fh)); | |
1219 | } else { | |
1220 | die "volume import format '$format' not available for $class"; | |
1221 | } | |
1222 | }; | |
1223 | if (my $err = $@) { | |
1224 | eval { $class->free_image($storeid, $scfg, $volname, 0, $file_format) }; | |
1225 | warn $@ if $@; | |
1226 | die $err; | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | sub volume_import_formats { | |
1231 | my ($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots) = @_; | |
1232 | if ($scfg->{path} && !defined($base_snapshot)) { | |
1233 | my $format = ($class->parse_volname($volname))[6]; | |
1234 | if ($with_snapshots) { | |
1235 | return ($format.'+size') if ($format eq 'qcow2' || $format eq 'vmdk'); | |
1236 | return (); | |
1237 | } | |
1238 | return ('tar+size') if $format eq 'subvol'; | |
1239 | return ('raw+size'); | |
1240 | } | |
1241 | return (); | |
1242 | } | |
1243 | ||
1244 | 1; |