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Commit | Line | Data |
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85fda4dd | 1 | package PVE::Storage::ZFSPoolPlugin; |
5bb8e010 DM |
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 | ||
10 | ||
11 | use base qw(PVE::Storage::Plugin); | |
12 | ||
5bb8e010 | 13 | sub type { |
85fda4dd | 14 | return 'zfspool'; |
5bb8e010 DM |
15 | } |
16 | ||
17 | sub plugindata { | |
18 | return { | |
85fda4dd | 19 | content => [ {images => 1}, { images => 1 }], |
5bb8e010 | 20 | }; |
85fda4dd | 21 | } |
5bb8e010 | 22 | |
7730694e DM |
23 | sub properties { |
24 | return { | |
25 | blocksize => { | |
26 | description => "block size", | |
27 | type => 'string', | |
28 | }, | |
29 | sparse => { | |
30 | description => "use sparse volumes", | |
31 | type => 'boolean', | |
32 | }, | |
33 | }; | |
34 | } | |
35 | ||
5bb8e010 DM |
36 | sub options { |
37 | return { | |
7730694e DM |
38 | pool => { fixed => 1 }, |
39 | blocksize => { optional => 1 }, | |
40 | sparse => { optional => 1 }, | |
41 | nodes => { optional => 1 }, | |
5bb8e010 DM |
42 | disable => { optional => 1 }, |
43 | maxfiles => { optional => 1 }, | |
44 | content => { optional => 1 }, | |
45 | }; | |
46 | } | |
47 | ||
7730694e DM |
48 | # static zfs helper methods |
49 | ||
060ef890 DM |
50 | sub zfs_parse_size { |
51 | my ($text) = @_; | |
52 | ||
53 | return 0 if !$text; | |
54 | ||
55 | if ($text =~ m/^(\d+(\.\d+)?)([TGMK])?$/) { | |
56 | ||
57 | my ($size, $reminder, $unit) = ($1, $2, $3); | |
58 | ||
59 | if ($unit) { | |
60 | if ($unit eq 'K') { | |
61 | $size *= 1024; | |
62 | } elsif ($unit eq 'M') { | |
63 | $size *= 1024*1024; | |
64 | } elsif ($unit eq 'G') { | |
65 | $size *= 1024*1024*1024; | |
66 | } elsif ($unit eq 'T') { | |
67 | $size *= 1024*1024*1024*1024; | |
68 | } else { | |
69 | die "got unknown zfs size unit '$unit'\n"; | |
70 | } | |
71 | } | |
72 | ||
73 | if ($reminder) { | |
74 | $size = ceil($size); | |
75 | } | |
76 | ||
77 | return $size; | |
78 | ||
79 | } | |
80 | ||
81 | warn "unable to parse zfs size '$text'\n"; | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
7730694e DM |
86 | sub zfs_parse_zvol_list { |
87 | my ($text) = @_; | |
88 | ||
89 | my $list = (); | |
90 | ||
91 | return $list if !$text; | |
92 | ||
93 | my @lines = split /\n/, $text; | |
94 | foreach my $line (@lines) { | |
95 | if ($line =~ /^(.+)\s+([a-zA-Z0-9\.]+|\-)\s+(.+)$/) { | |
96 | my $zvol = {}; | |
97 | my @parts = split /\//, $1; | |
98 | my $name = pop @parts; | |
99 | my $pool = join('/', @parts); | |
100 | ||
90a11abe WL |
101 | next unless $name =~ m!^(\w+)-(\d+)-(\w+)-(\d+)$!; |
102 | $name = $pool . '/' . $name; | |
7730694e DM |
103 | |
104 | $zvol->{pool} = $pool; | |
105 | $zvol->{name} = $name; | |
106 | $zvol->{size} = zfs_parse_size($2); | |
107 | if ($3 !~ /^-$/) { | |
108 | $zvol->{origin} = $3; | |
109 | } | |
110 | push @$list, $zvol; | |
111 | } | |
112 | } | |
113 | ||
114 | return $list; | |
115 | } | |
116 | ||
cc80ed9c WL |
117 | sub parse_volname { |
118 | my ($class, $volname) = @_; | |
119 | ||
120 | if ($volname =~ m/^(((base|vm)-(\d+)-\S+)\/)?((base)?(vm)?-(\d+)-\S+)$/) { | |
121 | return ('images', $5, $8, $2, $4, $6); | |
122 | } | |
123 | ||
124 | die "unable to parse zfs volume name '$volname'\n"; | |
125 | } | |
126 | ||
7730694e DM |
127 | # virtual zfs methods (subclass can overwrite them) |
128 | ||
f3e632d0 WL |
129 | sub path { |
130 | my ($class, $scfg, $volname) = @_; | |
131 | ||
132 | my ($vtype, $name, $vmid) = $class->parse_volname($volname); | |
133 | ||
134 | my $path = ''; | |
135 | ||
136 | if($vtype eq "images"){ | |
137 | $path = "/dev/zvol/$scfg->{pool}/$volname"; | |
138 | } else { | |
85fda4dd | 139 | die "$vtype is not allowed in ZFSPool!"; |
f3e632d0 WL |
140 | } |
141 | ||
142 | return ($path, $vmid, $vtype); | |
143 | } | |
144 | ||
7730694e DM |
145 | sub zfs_request { |
146 | my ($class, $scfg, $timeout, $method, @params) = @_; | |
147 | ||
148 | $timeout = 5 if !$timeout; | |
149 | ||
150 | my $cmd = []; | |
151 | ||
152 | if ($method eq 'zpool_list') { | |
86d47239 | 153 | push @$cmd, 'zpool', 'list'; |
7730694e DM |
154 | } else { |
155 | push @$cmd, 'zfs', $method; | |
156 | } | |
157 | ||
158 | push @$cmd, @params; | |
159 | ||
160 | my $msg = ''; | |
161 | ||
162 | my $output = sub { | |
163 | my $line = shift; | |
164 | $msg .= "$line\n"; | |
165 | }; | |
166 | ||
167 | run_command($cmd, outfunc => $output, timeout => $timeout); | |
168 | ||
169 | return $msg; | |
170 | } | |
171 | ||
b3ba95e4 WL |
172 | sub alloc_image { |
173 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
174 | ||
175 | die "unsupported format '$fmt'" if $fmt ne 'raw'; | |
176 | ||
177 | die "illegal name '$name' - sould be 'vm-$vmid-*'\n" | |
178 | if $name && $name !~ m/^vm-$vmid-/; | |
179 | ||
180 | $name = $class->zfs_find_free_diskname($storeid, $scfg, $vmid) if !$name; | |
181 | ||
182 | $class->zfs_create_zvol($scfg, $name, $size); | |
76fd7dc7 DM |
183 | |
184 | my $devname = "/dev/zvol/$scfg->{pool}/$name"; | |
185 | ||
186 | run_command("udevadm trigger --subsystem-match block"); | |
187 | system("udevadm settle --timeout 10 --exit-if-exists=${devname}"); | |
b3ba95e4 WL |
188 | |
189 | return $name; | |
190 | } | |
191 | ||
e9565df5 WL |
192 | sub free_image { |
193 | my ($class, $storeid, $scfg, $volname, $isBase) = @_; | |
194 | ||
195 | my (undef, $name, undef) = $class->parse_volname($volname); | |
196 | ||
197 | $class->zfs_delete_zvol($scfg, $name); | |
198 | ||
199 | return undef; | |
200 | } | |
201 | ||
ca04180f WL |
202 | sub list_images { |
203 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
204 | ||
205 | $cache->{zfs} = $class->zfs_list_zvol($scfg) if !$cache->{zfs}; | |
206 | my $zfspool = $scfg->{pool}; | |
207 | my $res = []; | |
208 | ||
209 | if (my $dat = $cache->{zfs}->{$zfspool}) { | |
210 | ||
211 | foreach my $image (keys %$dat) { | |
212 | ||
213 | my $volname = $dat->{$image}->{name}; | |
214 | my $parent = $dat->{$image}->{parent}; | |
215 | ||
216 | my $volid = undef; | |
217 | if ($parent && $parent =~ m/^(\S+)@(\S+)$/) { | |
218 | my ($basename) = ($1); | |
219 | $volid = "$storeid:$basename/$volname"; | |
220 | } else { | |
221 | $volid = "$storeid:$volname"; | |
222 | } | |
223 | ||
224 | my $owner = $dat->{$volname}->{vmid}; | |
225 | if ($vollist) { | |
226 | my $found = grep { $_ eq $volid } @$vollist; | |
227 | next if !$found; | |
228 | } else { | |
229 | next if defined ($vmid) && ($owner ne $vmid); | |
230 | } | |
231 | ||
232 | my $info = $dat->{$volname}; | |
233 | $info->{volid} = $volid; | |
234 | push @$res, $info; | |
235 | } | |
236 | } | |
237 | ||
238 | return $res; | |
239 | } | |
240 | ||
7730694e DM |
241 | sub zfs_get_pool_stats { |
242 | my ($class, $scfg) = @_; | |
243 | ||
244 | my $available = 0; | |
245 | my $used = 0; | |
246 | ||
247 | my $text = $class->zfs_request($scfg, undef, 'get', '-o', 'value', '-Hp', | |
248 | 'available,used', $scfg->{pool}); | |
249 | ||
250 | my @lines = split /\n/, $text; | |
251 | ||
252 | if($lines[0] =~ /^(\d+)$/) { | |
253 | $available = $1; | |
254 | } | |
255 | ||
256 | if($lines[1] =~ /^(\d+)$/) { | |
257 | $used = $1; | |
258 | } | |
259 | ||
260 | return ($available, $used); | |
261 | } | |
262 | ||
263 | sub zfs_get_zvol_size { | |
264 | my ($class, $scfg, $zvol) = @_; | |
265 | ||
266 | my $text = $class->zfs_request($scfg, undef, 'get', '-Hp', 'volsize', "$scfg->{pool}/$zvol"); | |
267 | ||
268 | if ($text =~ /volsize\s(\d+)/) { | |
269 | return $1; | |
270 | } | |
271 | ||
272 | die "Could not get zvol size"; | |
273 | } | |
274 | ||
275 | sub zfs_create_zvol { | |
276 | my ($class, $scfg, $zvol, $size) = @_; | |
277 | ||
278 | my $cmd = ['create']; | |
279 | ||
280 | push @$cmd, '-s' if $scfg->{sparse}; | |
281 | ||
282 | push @$cmd, '-b', $scfg->{blocksize} if $scfg->{blocksize}; | |
283 | ||
284 | push @$cmd, '-V', "${size}k", "$scfg->{pool}/$zvol"; | |
285 | ||
286 | $class->zfs_request($scfg, undef, @$cmd); | |
287 | } | |
288 | ||
289 | sub zfs_delete_zvol { | |
290 | my ($class, $scfg, $zvol) = @_; | |
291 | ||
292 | $class->zfs_request($scfg, undef, 'destroy', '-r', "$scfg->{pool}/$zvol"); | |
293 | } | |
294 | ||
295 | sub zfs_list_zvol { | |
296 | my ($class, $scfg) = @_; | |
297 | ||
298 | my $text = $class->zfs_request($scfg, 10, 'list', '-o', 'name,volsize,origin', '-t', 'volume', '-Hr'); | |
299 | my $zvols = zfs_parse_zvol_list($text); | |
300 | return undef if !$zvols; | |
301 | ||
302 | my $list = (); | |
303 | foreach my $zvol (@$zvols) { | |
304 | my @values = split('/', $zvol->{name}); | |
305 | ||
306 | my $image = pop @values; | |
307 | my $pool = join('/', @values); | |
308 | ||
309 | next if $image !~ m/^((vm|base)-(\d+)-\S+)$/; | |
310 | my $owner = $3; | |
311 | ||
312 | my $parent = $zvol->{origin}; | |
313 | if($zvol->{origin} && $zvol->{origin} =~ m/^$scfg->{pool}\/(\S+)$/){ | |
314 | $parent = $1; | |
315 | } | |
316 | ||
317 | $list->{$pool}->{$image} = { | |
318 | name => $image, | |
319 | size => $zvol->{size}, | |
320 | parent => $parent, | |
321 | format => 'raw', | |
322 | vmid => $owner | |
323 | }; | |
324 | } | |
325 | ||
326 | return $list; | |
327 | } | |
328 | ||
329 | sub zfs_find_free_diskname { | |
330 | my ($class, $storeid, $scfg, $vmid) = @_; | |
331 | ||
332 | my $name = undef; | |
333 | my $volumes = $class->zfs_list_zvol($scfg); | |
334 | ||
335 | my $disk_ids = {}; | |
336 | my $dat = $volumes->{$scfg->{pool}}; | |
337 | ||
338 | foreach my $image (keys %$dat) { | |
339 | my $volname = $dat->{$image}->{name}; | |
340 | if ($volname =~ m/(vm|base)-$vmid-disk-(\d+)/){ | |
341 | $disk_ids->{$2} = 1; | |
342 | } | |
343 | } | |
344 | ||
345 | for (my $i = 1; $i < 100; $i++) { | |
346 | if (!$disk_ids->{$i}) { | |
347 | return "vm-$vmid-disk-$i"; | |
348 | } | |
349 | } | |
350 | ||
351 | die "unable to allocate an image name for VM $vmid in storage '$storeid'\n"; | |
352 | } | |
353 | ||
2fc59177 DM |
354 | sub zfs_get_latest_snapshot { |
355 | my ($class, $scfg, $volname) = @_; | |
356 | ||
357 | # abort rollback if snapshot is not the latest | |
358 | my @params = ('-t', 'snapshot', '-o', 'name', '-s', 'creation'); | |
359 | my $text = zfs_request($class, $scfg, undef, 'list', @params); | |
360 | my @snapshots = split(/\n/, $text); | |
361 | ||
362 | my $recentsnap; | |
363 | foreach (@snapshots) { | |
364 | if (/$scfg->{pool}\/$volname/) { | |
365 | s/^.*@//; | |
366 | $recentsnap = $_; | |
367 | } | |
368 | } | |
369 | ||
370 | return $recentsnap; | |
371 | } | |
372 | ||
b5e5f7e3 DM |
373 | sub status { |
374 | my ($class, $storeid, $scfg, $cache) = @_; | |
375 | ||
376 | my $total = 0; | |
377 | my $free = 0; | |
378 | my $used = 0; | |
379 | my $active = 0; | |
380 | ||
381 | eval { | |
382 | ($free, $used) = $class->zfs_get_pool_stats($scfg); | |
383 | $active = 1; | |
384 | $total = $free + $used; | |
385 | }; | |
386 | warn $@ if $@; | |
387 | ||
388 | return ($total, $free, $used, $active); | |
389 | } | |
390 | ||
391 | sub volume_size_info { | |
392 | my ($class, $scfg, $storeid, $volname, $timeout) = @_; | |
393 | ||
394 | return $class->zfs_get_zvol_size($scfg, $volname); | |
395 | } | |
396 | ||
397 | sub volume_snapshot { | |
398 | my ($class, $scfg, $storeid, $volname, $snap, $running) = @_; | |
399 | ||
400 | $class->zfs_request($scfg, undef, 'snapshot', "$scfg->{pool}/$volname\@$snap"); | |
401 | } | |
402 | ||
403 | sub volume_snapshot_delete { | |
404 | my ($class, $scfg, $storeid, $volname, $snap, $running) = @_; | |
405 | ||
406 | $class->zfs_request($scfg, undef, 'destroy', "$scfg->{pool}/$volname\@$snap"); | |
407 | } | |
408 | ||
2b40ffae WL |
409 | sub volume_snapshot_rollback { |
410 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
411 | ||
1597f1f9 WL |
412 | zfs_request($class, $scfg, undef, 'rollback', "$scfg->{pool}/$volname\@$snap"); |
413 | } | |
414 | ||
415 | sub volume_rollback_is_possible { | |
416 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
417 | ||
2fc59177 | 418 | my $recentsnap = $class->zfs_get_latest_snapshot($scfg, $volname); |
2b40ffae | 419 | if ($snap ne $recentsnap) { |
1597f1f9 | 420 | die "can't rollback, more recent snapshots exist\n"; |
2b40ffae WL |
421 | } |
422 | ||
1597f1f9 | 423 | return 1; |
2b40ffae WL |
424 | } |
425 | ||
0a3d992f DM |
426 | sub activate_storage { |
427 | my ($class, $storeid, $scfg, $cache) = @_; | |
86d47239 WL |
428 | |
429 | my @param = ('-o', 'name', '-H'); | |
430 | ||
431 | my $text = zfs_request($class, $scfg, undef, 'zpool_list', @param); | |
432 | ||
433 | if ($text !~ $scfg->{pool}) { | |
434 | run_command("zpool import -d /dev/disk/by-id/ -a"); | |
435 | } | |
0a3d992f DM |
436 | return 1; |
437 | } | |
438 | ||
439 | sub deactivate_storage { | |
440 | my ($class, $storeid, $scfg, $cache) = @_; | |
441 | return 1; | |
442 | } | |
443 | ||
d4c63dc1 WL |
444 | sub activate_volume { |
445 | my ($class, $storeid, $scfg, $volname, $exclusive, $cache) = @_; | |
446 | return 1; | |
447 | } | |
448 | ||
449 | sub deactivate_volume { | |
450 | my ($class, $storeid, $scfg, $volname, $exclusive, $cache) = @_; | |
451 | return 1; | |
452 | } | |
5bb8e010 | 453 | |
d3a282e8 WL |
454 | sub clone_image { |
455 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; | |
456 | ||
457 | $snap ||= '__base__'; | |
458 | ||
459 | my ($vtype, $basename, $basevmid, undef, undef, $isBase) = | |
460 | $class->parse_volname($volname); | |
461 | ||
462 | die "clone_image only works on base images\n" if !$isBase; | |
463 | ||
464 | my $name = $class->zfs_find_free_diskname($storeid, $scfg, $vmid); | |
465 | ||
d3a282e8 WL |
466 | $class->zfs_request($scfg, undef, 'clone', "$scfg->{pool}/$basename\@$snap", "$scfg->{pool}/$name"); |
467 | ||
468 | return $name; | |
469 | } | |
470 | ||
471 | sub create_base { | |
472 | my ($class, $storeid, $scfg, $volname) = @_; | |
473 | ||
474 | my $snap = '__base__'; | |
475 | ||
476 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
477 | $class->parse_volname($volname); | |
478 | ||
479 | die "create_base not possible with base image\n" if $isBase; | |
480 | ||
481 | my $newname = $name; | |
482 | $newname =~ s/^vm-/base-/; | |
483 | ||
484 | my $newvolname = $basename ? "$basename/$newname" : "$newname"; | |
485 | ||
486 | $class->zfs_request($scfg, undef, 'rename', "$scfg->{pool}/$name", "$scfg->{pool}/$newname"); | |
487 | ||
488 | my $running = undef; #fixme : is create_base always offline ? | |
489 | ||
490 | $class->volume_snapshot($scfg, $storeid, $newname, $snap, $running); | |
491 | ||
492 | return $newvolname; | |
493 | } | |
494 | ||
a4034b9f WL |
495 | sub volume_resize { |
496 | my ($class, $scfg, $storeid, $volname, $size, $running) = @_; | |
497 | ||
498 | my $new_size = ($size/1024); | |
499 | ||
500 | $class->zfs_request($scfg, undef, 'set', 'volsize=' . $new_size . 'k', "$scfg->{pool}/$volname"); | |
501 | ||
502 | return $new_size; | |
503 | } | |
504 | ||
2b40ffae WL |
505 | sub volume_has_feature { |
506 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
507 | ||
508 | my $features = { | |
509 | snapshot => { current => 1, snap => 1}, | |
510 | clone => { base => 1}, | |
511 | template => { current => 1}, | |
512 | copy => { base => 1, current => 1}, | |
513 | }; | |
514 | ||
515 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
516 | $class->parse_volname($volname); | |
517 | ||
518 | my $key = undef; | |
519 | ||
520 | if ($snapname) { | |
521 | $key = 'snap'; | |
522 | } else { | |
523 | $key = $isBase ? 'base' : 'current'; | |
524 | } | |
525 | ||
526 | return 1 if $features->{$feature}->{$key}; | |
527 | ||
528 | return undef; | |
529 | } | |
530 | ||
5bb8e010 | 531 | 1; |