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1 | package PVE::Storage::ZFSPoolPlugin; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use IO::File; | |
6 | use POSIX; | |
7 | use PVE::Tools qw(run_command); | |
8 | use PVE::Storage::Plugin; | |
9 | use PVE::RPCEnvironment; | |
10 | use Net::IP; | |
11 | ||
12 | use base qw(PVE::Storage::Plugin); | |
13 | ||
14 | sub type { | |
15 | return 'zfspool'; | |
16 | } | |
17 | ||
18 | sub plugindata { | |
19 | return { | |
20 | content => [ {images => 1, rootdir => 1}, {images => 1 , rootdir => 1}], | |
21 | format => [ { raw => 1, subvol => 1 } , 'raw' ], | |
22 | }; | |
23 | } | |
24 | ||
25 | sub properties { | |
26 | return { | |
27 | blocksize => { | |
28 | description => "block size", | |
29 | type => 'string', | |
30 | }, | |
31 | sparse => { | |
32 | description => "use sparse volumes", | |
33 | type => 'boolean', | |
34 | }, | |
35 | }; | |
36 | } | |
37 | ||
38 | sub options { | |
39 | return { | |
40 | pool => { fixed => 1 }, | |
41 | blocksize => { optional => 1 }, | |
42 | sparse => { optional => 1 }, | |
43 | nodes => { optional => 1 }, | |
44 | disable => { optional => 1 }, | |
45 | content => { optional => 1 }, | |
46 | bwlimit => { optional => 1 }, | |
47 | }; | |
48 | } | |
49 | ||
50 | # static zfs helper methods | |
51 | ||
52 | sub zfs_parse_size { | |
53 | my ($text) = @_; | |
54 | ||
55 | return 0 if !$text; | |
56 | ||
57 | if ($text =~ m/^(\d+(\.\d+)?)([TGMK])?$/) { | |
58 | ||
59 | my ($size, $reminder, $unit) = ($1, $2, $3); | |
60 | ||
61 | if ($unit) { | |
62 | if ($unit eq 'K') { | |
63 | $size *= 1024; | |
64 | } elsif ($unit eq 'M') { | |
65 | $size *= 1024*1024; | |
66 | } elsif ($unit eq 'G') { | |
67 | $size *= 1024*1024*1024; | |
68 | } elsif ($unit eq 'T') { | |
69 | $size *= 1024*1024*1024*1024; | |
70 | } else { | |
71 | die "got unknown zfs size unit '$unit'\n"; | |
72 | } | |
73 | } | |
74 | ||
75 | if ($reminder) { | |
76 | $size = ceil($size); | |
77 | } | |
78 | ||
79 | return $size; | |
80 | ||
81 | } | |
82 | ||
83 | warn "unable to parse zfs size '$text'\n"; | |
84 | ||
85 | return 0; | |
86 | } | |
87 | ||
88 | sub zfs_parse_zvol_list { | |
89 | my ($text) = @_; | |
90 | ||
91 | my $list = (); | |
92 | ||
93 | return $list if !$text; | |
94 | ||
95 | my @lines = split /\n/, $text; | |
96 | foreach my $line (@lines) { | |
97 | my ($dataset, $size, $origin, $type, $refquota) = split(/\s+/, $line); | |
98 | next if !($type eq 'volume' || $type eq 'filesystem'); | |
99 | ||
100 | my $zvol = {}; | |
101 | my @parts = split /\//, $dataset; | |
102 | next if scalar(@parts) < 2; # we need pool/name | |
103 | my $name = pop @parts; | |
104 | my $pool = join('/', @parts); | |
105 | ||
106 | next unless $name =~ m!^(vm|base|subvol|basevol)-(\d+)-(\S+)$!; | |
107 | $zvol->{owner} = $2; | |
108 | ||
109 | $zvol->{pool} = $pool; | |
110 | $zvol->{name} = $name; | |
111 | if ($type eq 'filesystem') { | |
112 | if ($refquota eq 'none') { | |
113 | $zvol->{size} = 0; | |
114 | } else { | |
115 | $zvol->{size} = zfs_parse_size($refquota); | |
116 | } | |
117 | $zvol->{format} = 'subvol'; | |
118 | } else { | |
119 | $zvol->{size} = zfs_parse_size($size); | |
120 | $zvol->{format} = 'raw'; | |
121 | } | |
122 | if ($origin !~ /^-$/) { | |
123 | $zvol->{origin} = $origin; | |
124 | } | |
125 | push @$list, $zvol; | |
126 | } | |
127 | ||
128 | return $list; | |
129 | } | |
130 | ||
131 | sub parse_volname { | |
132 | my ($class, $volname) = @_; | |
133 | ||
134 | if ($volname =~ m/^(((base|basevol)-(\d+)-\S+)\/)?((base|basevol|vm|subvol)-(\d+)-\S+)$/) { | |
135 | my $format = ($6 eq 'subvol' || $6 eq 'basevol') ? 'subvol' : 'raw'; | |
136 | my $isBase = ($6 eq 'base' || $6 eq 'basevol'); | |
137 | return ('images', $5, $7, $2, $4, $isBase, $format); | |
138 | } | |
139 | ||
140 | die "unable to parse zfs volume name '$volname'\n"; | |
141 | } | |
142 | ||
143 | # virtual zfs methods (subclass can overwrite them) | |
144 | ||
145 | sub path { | |
146 | my ($class, $scfg, $volname, $storeid, $snapname) = @_; | |
147 | ||
148 | my ($vtype, $name, $vmid) = $class->parse_volname($volname); | |
149 | ||
150 | my $path = ''; | |
151 | ||
152 | if ($vtype eq "images") { | |
153 | if ($name =~ m/^subvol-/ || $name =~ m/^basevol-/) { | |
154 | # fixme: we currently assume standard mount point?! | |
155 | $path = "/$scfg->{pool}/$name"; | |
156 | } else { | |
157 | $path = "/dev/zvol/$scfg->{pool}/$name"; | |
158 | } | |
159 | $path .= "\@$snapname" if defined($snapname); | |
160 | } else { | |
161 | die "$vtype is not allowed in ZFSPool!"; | |
162 | } | |
163 | ||
164 | return ($path, $vmid, $vtype); | |
165 | } | |
166 | ||
167 | sub zfs_request { | |
168 | my ($class, $scfg, $timeout, $method, @params) = @_; | |
169 | ||
170 | my $default_timeout = PVE::RPCEnvironment->is_worker() ? 60*60 : 5; | |
171 | ||
172 | my $cmd = []; | |
173 | ||
174 | if ($method eq 'zpool_list') { | |
175 | push @$cmd, 'zpool', 'list'; | |
176 | } elsif ($method eq 'zpool_import') { | |
177 | push @$cmd, 'zpool', 'import'; | |
178 | $default_timeout = 15 if $default_timeout < 15; | |
179 | } else { | |
180 | push @$cmd, 'zfs', $method; | |
181 | } | |
182 | ||
183 | push @$cmd, @params; | |
184 | ||
185 | my $msg = ''; | |
186 | ||
187 | my $output = sub { | |
188 | my $line = shift; | |
189 | $msg .= "$line\n"; | |
190 | }; | |
191 | ||
192 | $timeout = $default_timeout if !$timeout; | |
193 | ||
194 | run_command($cmd, errmsg => "zfs error", outfunc => $output, timeout => $timeout); | |
195 | ||
196 | return $msg; | |
197 | } | |
198 | ||
199 | sub alloc_image { | |
200 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
201 | ||
202 | my $volname = $name; | |
203 | ||
204 | if ($fmt eq 'raw') { | |
205 | ||
206 | die "illegal name '$volname' - should be 'vm-$vmid-*'\n" | |
207 | if $volname && $volname !~ m/^vm-$vmid-/; | |
208 | $volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt) | |
209 | if !$volname; | |
210 | ||
211 | $class->zfs_create_zvol($scfg, $volname, $size); | |
212 | my $devname = "/dev/zvol/$scfg->{pool}/$volname"; | |
213 | ||
214 | my $timeout = PVE::RPCEnvironment->is_worker() ? 60*5 : 10; | |
215 | for (my $i = 1; $i <= $timeout; $i++) { | |
216 | last if -b $devname; | |
217 | die "Timeout: no zvol after $timeout sec found.\n" | |
218 | if $i == $timeout; | |
219 | ||
220 | sleep(1); | |
221 | } | |
222 | } elsif ( $fmt eq 'subvol') { | |
223 | ||
224 | die "illegal name '$volname' - should be 'subvol-$vmid-*'\n" | |
225 | if $volname && $volname !~ m/^subvol-$vmid-/; | |
226 | $volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt) | |
227 | if !$volname; | |
228 | ||
229 | die "illegal name '$volname' - should be 'subvol-$vmid-*'\n" | |
230 | if $volname !~ m/^subvol-$vmid-/; | |
231 | ||
232 | $class->zfs_create_subvol($scfg, $volname, $size); | |
233 | ||
234 | } else { | |
235 | die "unsupported format '$fmt'"; | |
236 | } | |
237 | ||
238 | return $volname; | |
239 | } | |
240 | ||
241 | sub free_image { | |
242 | my ($class, $storeid, $scfg, $volname, $isBase) = @_; | |
243 | ||
244 | my (undef, $name, undef) = $class->parse_volname($volname); | |
245 | ||
246 | $class->zfs_delete_zvol($scfg, $name); | |
247 | ||
248 | return undef; | |
249 | } | |
250 | ||
251 | sub list_images { | |
252 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
253 | ||
254 | $cache->{zfs} = $class->zfs_list_zvol($scfg) if !$cache->{zfs}; | |
255 | my $zfspool = $scfg->{pool}; | |
256 | my $res = []; | |
257 | ||
258 | if (my $dat = $cache->{zfs}->{$zfspool}) { | |
259 | ||
260 | foreach my $image (keys %$dat) { | |
261 | ||
262 | my $info = $dat->{$image}; | |
263 | ||
264 | my $volname = $info->{name}; | |
265 | my $parent = $info->{parent}; | |
266 | my $owner = $info->{vmid}; | |
267 | ||
268 | if ($parent && $parent =~ m/^(\S+)\@__base__$/) { | |
269 | my ($basename) = ($1); | |
270 | $info->{volid} = "$storeid:$basename/$volname"; | |
271 | } else { | |
272 | $info->{volid} = "$storeid:$volname"; | |
273 | } | |
274 | ||
275 | if ($vollist) { | |
276 | my $found = grep { $_ eq $info->{volid} } @$vollist; | |
277 | next if !$found; | |
278 | } else { | |
279 | next if defined ($vmid) && ($owner ne $vmid); | |
280 | } | |
281 | ||
282 | push @$res, $info; | |
283 | } | |
284 | } | |
285 | return $res; | |
286 | } | |
287 | ||
288 | sub zfs_get_pool_stats { | |
289 | my ($class, $scfg) = @_; | |
290 | ||
291 | my $available = 0; | |
292 | my $used = 0; | |
293 | ||
294 | my $text = $class->zfs_request($scfg, undef, 'get', '-o', 'value', '-Hp', | |
295 | 'available,used', $scfg->{pool}); | |
296 | ||
297 | my @lines = split /\n/, $text; | |
298 | ||
299 | if($lines[0] =~ /^(\d+)$/) { | |
300 | $available = $1; | |
301 | } | |
302 | ||
303 | if($lines[1] =~ /^(\d+)$/) { | |
304 | $used = $1; | |
305 | } | |
306 | ||
307 | return ($available, $used); | |
308 | } | |
309 | ||
310 | sub zfs_create_zvol { | |
311 | my ($class, $scfg, $zvol, $size) = @_; | |
312 | ||
313 | # always align size to 1M as workaround until | |
314 | # https://github.com/zfsonlinux/zfs/issues/8541 is solved | |
315 | my $padding = (1024 - $size % 1024) % 1024; | |
316 | $size = $size + $padding; | |
317 | ||
318 | my $cmd = ['create']; | |
319 | ||
320 | push @$cmd, '-s' if $scfg->{sparse}; | |
321 | ||
322 | push @$cmd, '-b', $scfg->{blocksize} if $scfg->{blocksize}; | |
323 | ||
324 | push @$cmd, '-V', "${size}k", "$scfg->{pool}/$zvol"; | |
325 | ||
326 | $class->zfs_request($scfg, undef, @$cmd); | |
327 | } | |
328 | ||
329 | sub zfs_create_subvol { | |
330 | my ($class, $scfg, $volname, $size) = @_; | |
331 | ||
332 | my $dataset = "$scfg->{pool}/$volname"; | |
333 | ||
334 | my $cmd = ['create', '-o', 'acltype=posixacl', '-o', 'xattr=sa', | |
335 | '-o', "refquota=${size}k", $dataset]; | |
336 | ||
337 | $class->zfs_request($scfg, undef, @$cmd); | |
338 | } | |
339 | ||
340 | sub zfs_delete_zvol { | |
341 | my ($class, $scfg, $zvol) = @_; | |
342 | ||
343 | my $err; | |
344 | ||
345 | for (my $i = 0; $i < 6; $i++) { | |
346 | ||
347 | eval { $class->zfs_request($scfg, undef, 'destroy', '-r', "$scfg->{pool}/$zvol"); }; | |
348 | if ($err = $@) { | |
349 | if ($err =~ m/^zfs error:(.*): dataset is busy.*/) { | |
350 | sleep(1); | |
351 | } elsif ($err =~ m/^zfs error:.*: dataset does not exist.*$/) { | |
352 | $err = undef; | |
353 | last; | |
354 | } else { | |
355 | die $err; | |
356 | } | |
357 | } else { | |
358 | last; | |
359 | } | |
360 | } | |
361 | ||
362 | die $err if $err; | |
363 | } | |
364 | ||
365 | sub zfs_list_zvol { | |
366 | my ($class, $scfg) = @_; | |
367 | ||
368 | my $text = $class->zfs_request($scfg, 10, 'list', '-o', 'name,volsize,origin,type,refquota', '-t', 'volume,filesystem', '-Hr'); | |
369 | my $zvols = zfs_parse_zvol_list($text); | |
370 | return undef if !$zvols; | |
371 | ||
372 | my $list = (); | |
373 | foreach my $zvol (@$zvols) { | |
374 | my $pool = $zvol->{pool}; | |
375 | my $name = $zvol->{name}; | |
376 | my $parent = $zvol->{origin}; | |
377 | if($zvol->{origin} && $zvol->{origin} =~ m/^$scfg->{pool}\/(\S+)$/){ | |
378 | $parent = $1; | |
379 | } | |
380 | ||
381 | $list->{$pool}->{$name} = { | |
382 | name => $name, | |
383 | size => $zvol->{size}, | |
384 | parent => $parent, | |
385 | format => $zvol->{format}, | |
386 | vmid => $zvol->{owner}, | |
387 | }; | |
388 | } | |
389 | ||
390 | return $list; | |
391 | } | |
392 | ||
393 | sub zfs_find_free_diskname { | |
394 | my ($class, $storeid, $scfg, $vmid, $format) = @_; | |
395 | ||
396 | my $volumes = $class->zfs_list_zvol($scfg); | |
397 | my $dat = $volumes->{$scfg->{pool}}; | |
398 | ||
399 | my $disk_list = [ keys %$dat ]; | |
400 | return PVE::Storage::Plugin::get_next_vm_diskname($disk_list, $storeid, $vmid, $format, $scfg); | |
401 | } | |
402 | ||
403 | sub zfs_get_latest_snapshot { | |
404 | my ($class, $scfg, $volname) = @_; | |
405 | ||
406 | my $vname = ($class->parse_volname($volname))[1]; | |
407 | ||
408 | # abort rollback if snapshot is not the latest | |
409 | my @params = ('-t', 'snapshot', '-o', 'name', '-s', 'creation'); | |
410 | my $text = $class->zfs_request($scfg, undef, 'list', @params); | |
411 | my @snapshots = split(/\n/, $text); | |
412 | ||
413 | my $recentsnap; | |
414 | foreach (@snapshots) { | |
415 | if (/$scfg->{pool}\/$vname/) { | |
416 | s/^.*@//; | |
417 | $recentsnap = $_; | |
418 | } | |
419 | } | |
420 | ||
421 | return $recentsnap; | |
422 | } | |
423 | ||
424 | sub status { | |
425 | my ($class, $storeid, $scfg, $cache) = @_; | |
426 | ||
427 | my $total = 0; | |
428 | my $free = 0; | |
429 | my $used = 0; | |
430 | my $active = 0; | |
431 | ||
432 | eval { | |
433 | ($free, $used) = $class->zfs_get_pool_stats($scfg); | |
434 | $active = 1; | |
435 | $total = $free + $used; | |
436 | }; | |
437 | warn $@ if $@; | |
438 | ||
439 | return ($total, $free, $used, $active); | |
440 | } | |
441 | ||
442 | sub volume_size_info { | |
443 | my ($class, $scfg, $storeid, $volname, $timeout) = @_; | |
444 | ||
445 | my (undef, $vname, undef, undef, undef, undef, $format) = | |
446 | $class->parse_volname($volname); | |
447 | ||
448 | my $attr = $format eq 'subvol' ? 'refquota' : 'volsize'; | |
449 | my $text = $class->zfs_request($scfg, undef, 'get', '-Hp', $attr, "$scfg->{pool}/$vname"); | |
450 | if ($text =~ /\s$attr\s(\d+)\s/) { | |
451 | return $1; | |
452 | } | |
453 | ||
454 | die "Could not get zfs volume size\n"; | |
455 | } | |
456 | ||
457 | sub volume_snapshot { | |
458 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
459 | ||
460 | my $vname = ($class->parse_volname($volname))[1]; | |
461 | ||
462 | $class->zfs_request($scfg, undef, 'snapshot', "$scfg->{pool}/$vname\@$snap"); | |
463 | } | |
464 | ||
465 | sub volume_snapshot_delete { | |
466 | my ($class, $scfg, $storeid, $volname, $snap, $running) = @_; | |
467 | ||
468 | my $vname = ($class->parse_volname($volname))[1]; | |
469 | ||
470 | $class->deactivate_volume($storeid, $scfg, $vname, $snap, {}); | |
471 | $class->zfs_request($scfg, undef, 'destroy', "$scfg->{pool}/$vname\@$snap"); | |
472 | } | |
473 | ||
474 | sub volume_snapshot_rollback { | |
475 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
476 | ||
477 | my $vname = ($class->parse_volname($volname))[1]; | |
478 | ||
479 | $class->zfs_request($scfg, undef, 'rollback', "$scfg->{pool}/$vname\@$snap"); | |
480 | } | |
481 | ||
482 | sub volume_rollback_is_possible { | |
483 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
484 | ||
485 | my $recentsnap = $class->zfs_get_latest_snapshot($scfg, $volname); | |
486 | if ($snap ne $recentsnap) { | |
487 | die "can't rollback, more recent snapshots exist\n"; | |
488 | } | |
489 | ||
490 | return 1; | |
491 | } | |
492 | ||
493 | sub volume_snapshot_list { | |
494 | my ($class, $scfg, $storeid, $volname) = @_; | |
495 | ||
496 | my ($vtype, $name, $vmid) = $class->parse_volname($volname); | |
497 | ||
498 | my $zpath = "$scfg->{pool}/$name"; | |
499 | ||
500 | my $snaps = []; | |
501 | ||
502 | my $cmd = ['zfs', 'list', '-r', '-H', '-S', 'name', '-t', 'snap', '-o', | |
503 | 'name', $zpath]; | |
504 | ||
505 | my $outfunc = sub { | |
506 | my $line = shift; | |
507 | ||
508 | if ($line =~ m/^\Q$zpath\E@(.*)$/) { | |
509 | push @$snaps, $1; | |
510 | } | |
511 | }; | |
512 | ||
513 | eval { run_command( [$cmd], outfunc => $outfunc , errfunc => sub{}); }; | |
514 | ||
515 | # return an empty array if dataset does not exist. | |
516 | return $snaps; | |
517 | } | |
518 | ||
519 | sub activate_storage { | |
520 | my ($class, $storeid, $scfg, $cache) = @_; | |
521 | ||
522 | # Note: $scfg->{pool} can include dataset <pool>/<dataset> | |
523 | my $pool = $scfg->{pool}; | |
524 | $pool =~ s!/.*$!!; | |
525 | ||
526 | my @param = ('-o', 'name', '-H', "$pool"); | |
527 | my $res; | |
528 | eval { | |
529 | $res = $class->zfs_request($scfg, undef, 'zpool_list', @param); | |
530 | }; | |
531 | ||
532 | if ($@ || !defined($res) || $res !~ $pool) { | |
533 | eval { | |
534 | @param = ('-d', '/dev/disk/by-id/', "$pool"); | |
535 | $class->zfs_request($scfg, undef, 'zpool_import', @param); | |
536 | }; | |
537 | die "could not activate storage '$storeid', $@\n" if $@; | |
538 | } | |
539 | return 1; | |
540 | } | |
541 | ||
542 | sub deactivate_storage { | |
543 | my ($class, $storeid, $scfg, $cache) = @_; | |
544 | return 1; | |
545 | } | |
546 | ||
547 | sub activate_volume { | |
548 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; | |
549 | return 1; | |
550 | } | |
551 | ||
552 | sub deactivate_volume { | |
553 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; | |
554 | return 1; | |
555 | } | |
556 | ||
557 | sub clone_image { | |
558 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; | |
559 | ||
560 | $snap ||= '__base__'; | |
561 | ||
562 | my ($vtype, $basename, $basevmid, undef, undef, $isBase, $format) = | |
563 | $class->parse_volname($volname); | |
564 | ||
565 | die "clone_image only works on base images\n" if !$isBase; | |
566 | ||
567 | my $name = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $format); | |
568 | ||
569 | if ($format eq 'subvol') { | |
570 | my $size = $class->zfs_request($scfg, undef, 'list', '-H', '-o', 'refquota', "$scfg->{pool}/$basename"); | |
571 | chomp($size); | |
572 | $class->zfs_request($scfg, undef, 'clone', "$scfg->{pool}/$basename\@$snap", "$scfg->{pool}/$name", '-o', "refquota=$size"); | |
573 | } else { | |
574 | $class->zfs_request($scfg, undef, 'clone', "$scfg->{pool}/$basename\@$snap", "$scfg->{pool}/$name"); | |
575 | } | |
576 | ||
577 | return "$basename/$name"; | |
578 | } | |
579 | ||
580 | sub create_base { | |
581 | my ($class, $storeid, $scfg, $volname) = @_; | |
582 | ||
583 | my $snap = '__base__'; | |
584 | ||
585 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $format) = | |
586 | $class->parse_volname($volname); | |
587 | ||
588 | die "create_base not possible with base image\n" if $isBase; | |
589 | ||
590 | my $newname = $name; | |
591 | if ( $format eq 'subvol' ) { | |
592 | $newname =~ s/^subvol-/basevol-/; | |
593 | } else { | |
594 | $newname =~ s/^vm-/base-/; | |
595 | } | |
596 | my $newvolname = $basename ? "$basename/$newname" : "$newname"; | |
597 | ||
598 | $class->zfs_request($scfg, undef, 'rename', "$scfg->{pool}/$name", "$scfg->{pool}/$newname"); | |
599 | ||
600 | my $running = undef; #fixme : is create_base always offline ? | |
601 | ||
602 | $class->volume_snapshot($scfg, $storeid, $newname, $snap, $running); | |
603 | ||
604 | return $newvolname; | |
605 | } | |
606 | ||
607 | sub volume_resize { | |
608 | my ($class, $scfg, $storeid, $volname, $size, $running) = @_; | |
609 | ||
610 | my $new_size = int($size/1024); | |
611 | ||
612 | my (undef, $vname, undef, undef, undef, undef, $format) = | |
613 | $class->parse_volname($volname); | |
614 | ||
615 | my $attr = $format eq 'subvol' ? 'refquota' : 'volsize'; | |
616 | ||
617 | $class->zfs_request($scfg, undef, 'set', "$attr=${new_size}k", "$scfg->{pool}/$vname"); | |
618 | ||
619 | return $new_size; | |
620 | } | |
621 | ||
622 | sub storage_can_replicate { | |
623 | my ($class, $scfg, $storeid, $format) = @_; | |
624 | ||
625 | return 1 if $format eq 'raw' || $format eq 'subvol'; | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | sub volume_has_feature { | |
631 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
632 | ||
633 | my $features = { | |
634 | snapshot => { current => 1, snap => 1}, | |
635 | clone => { base => 1}, | |
636 | template => { current => 1}, | |
637 | copy => { base => 1, current => 1}, | |
638 | sparseinit => { base => 1, current => 1}, | |
639 | replicate => { base => 1, current => 1}, | |
640 | }; | |
641 | ||
642 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
643 | $class->parse_volname($volname); | |
644 | ||
645 | my $key = undef; | |
646 | ||
647 | if ($snapname) { | |
648 | $key = 'snap'; | |
649 | } else { | |
650 | $key = $isBase ? 'base' : 'current'; | |
651 | } | |
652 | ||
653 | return 1 if $features->{$feature}->{$key}; | |
654 | ||
655 | return undef; | |
656 | } | |
657 | ||
658 | sub volume_export { | |
659 | my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
660 | ||
661 | die "unsupported export stream format for $class: $format\n" | |
662 | if $format ne 'zfs'; | |
663 | ||
664 | die "$class storage can only export snapshots\n" | |
665 | if !defined($snapshot); | |
666 | ||
667 | my $dataset = ($class->parse_volname($volname))[1]; | |
668 | ||
669 | my $fd = fileno($fh); | |
670 | die "internal error: invalid file handle for volume_export\n" | |
671 | if !defined($fd); | |
672 | $fd = ">&$fd"; | |
673 | ||
674 | # For zfs we always create a replication stream (-R) which means the remote | |
675 | # side will always delete non-existing source snapshots. This should work | |
676 | # for all our use cases. | |
677 | my $cmd = ['zfs', 'send', '-Rpv']; | |
678 | if (defined($base_snapshot)) { | |
679 | my $arg = $with_snapshots ? '-I' : '-i'; | |
680 | push @$cmd, $arg, $base_snapshot; | |
681 | } | |
682 | push @$cmd, '--', "$scfg->{pool}/$dataset\@$snapshot"; | |
683 | ||
684 | run_command($cmd, output => $fd); | |
685 | ||
686 | return; | |
687 | } | |
688 | ||
689 | sub volume_export_formats { | |
690 | my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_; | |
691 | ||
692 | my @formats = ('zfs'); | |
693 | # TODOs: | |
694 | # push @formats, 'fies' if $volname !~ /^(?:basevol|subvol)-/; | |
695 | # push @formats, 'raw' if !$base_snapshot && !$with_snapshots; | |
696 | return @formats; | |
697 | } | |
698 | ||
699 | sub volume_import { | |
700 | my ($class, $scfg, $storeid, $fh, $volname, $format, $base_snapshot, $with_snapshots) = @_; | |
701 | ||
702 | die "unsupported import stream format for $class: $format\n" | |
703 | if $format ne 'zfs'; | |
704 | ||
705 | my $fd = fileno($fh); | |
706 | die "internal error: invalid file handle for volume_import\n" | |
707 | if !defined($fd); | |
708 | ||
709 | my $dataset = ($class->parse_volname($volname))[1]; | |
710 | my $zfspath = "$scfg->{pool}/$dataset"; | |
711 | my $suffix = defined($base_snapshot) ? "\@$base_snapshot" : ''; | |
712 | my $exists = 0 == run_command(['zfs', 'get', '-H', 'name', $zfspath.$suffix], | |
713 | noerr => 1, errfunc => sub {}); | |
714 | if (defined($base_snapshot)) { | |
715 | die "base snapshot '$zfspath\@$base_snapshot' doesn't exist\n" if !$exists; | |
716 | } else { | |
717 | die "volume '$zfspath' already exists\n" if $exists; | |
718 | } | |
719 | ||
720 | eval { run_command(['zfs', 'recv', '-F', '--', $zfspath], input => "<&$fd") }; | |
721 | if (my $err = $@) { | |
722 | if (defined($base_snapshot)) { | |
723 | eval { run_command(['zfs', 'rollback', '-r', '--', "$zfspath\@$base_snapshot"]) }; | |
724 | } else { | |
725 | eval { run_command(['zfs', 'destroy', '-r', '--', $zfspath]) }; | |
726 | } | |
727 | die $err; | |
728 | } | |
729 | ||
730 | return; | |
731 | } | |
732 | ||
733 | sub volume_import_formats { | |
734 | my ($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots) = @_; | |
735 | ||
736 | return $class->volume_export_formats($scfg, $storeid, $volname, undef, $base_snapshot, $with_snapshots); | |
737 | } | |
738 | ||
739 | 1; |