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Commit | Line | Data |
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14770890 DM |
1 | package PVE::Storage::DRBDPlugin; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use IO::File; | |
eab90afd DM |
6 | use Net::DBus; |
7 | use Data::Dumper; | |
8 | ||
14770890 | 9 | use PVE::Tools qw(run_command trim); |
28d58512 | 10 | use PVE::INotify; |
14770890 DM |
11 | use PVE::Storage::Plugin; |
12 | use PVE::JSONSchema qw(get_standard_option); | |
13 | ||
14 | use base qw(PVE::Storage::Plugin); | |
15 | ||
16 | # Configuration | |
17 | ||
fb0e1d93 DM |
18 | my $default_redundancy = 2; |
19 | ||
14770890 DM |
20 | sub type { |
21 | return 'drbd'; | |
22 | } | |
23 | ||
24 | sub plugindata { | |
25 | return { | |
3c056934 | 26 | content => [ {images => 1, rootdir => 1}, { images => 1 }], |
14770890 DM |
27 | }; |
28 | } | |
29 | ||
30 | sub properties { | |
31 | return { | |
32 | redundancy => { | |
33 | description => "The redundancy count specifies the number of nodes to which the resource should be deployed. It must be at least 1 and at most the number of nodes in the cluster.", | |
34 | type => 'integer', | |
35 | minimum => 1, | |
36 | maximum => 16, | |
fb0e1d93 | 37 | default => $default_redundancy, |
14770890 DM |
38 | }, |
39 | }; | |
40 | } | |
41 | ||
42 | sub options { | |
43 | return { | |
44 | redundancy => { optional => 1 }, | |
c2c31217 | 45 | content => { optional => 1 }, |
14770890 DM |
46 | nodes => { optional => 1 }, |
47 | disable => { optional => 1 }, | |
48 | }; | |
49 | } | |
50 | ||
eab90afd DM |
51 | # helper |
52 | ||
fb0e1d93 DM |
53 | sub get_redundancy { |
54 | my ($scfg) = @_; | |
55 | ||
56 | return $scfg->{redundancy} || $default_redundancy; | |
57 | } | |
58 | ||
eab90afd DM |
59 | sub connect_drbdmanage_service { |
60 | ||
61 | my $bus = Net::DBus->system; | |
62 | ||
63 | my $service = $bus->get_service("org.drbd.drbdmanaged"); | |
64 | ||
65 | my $hdl = $service->get_object("/interface", "org.drbd.drbdmanaged"); | |
66 | ||
67 | return $hdl; | |
68 | } | |
69 | ||
31ba75ff | 70 | sub check_drbd_res { |
eab90afd DM |
71 | my ($rc) = @_; |
72 | ||
31ba75ff | 73 | die "got undefined drbd result\n" if !$rc; |
eab90afd | 74 | |
9e4632c2 | 75 | # Messages for return codes 1 to 99 are not considered an error. |
31ba75ff | 76 | foreach my $res (@$rc) { |
30a1369b | 77 | my ($code, $format, $details) = @$res; |
eab90afd | 78 | |
9e4632c2 | 79 | next if $code < 100; |
eab90afd | 80 | |
30a1369b DM |
81 | my $msg; |
82 | if (defined($format)) { | |
83 | my @args = (); | |
84 | push @args, $details->{$1} // "" | |
85 | while $format =~ s,\%\((\w+)\),%,; | |
86 | ||
87 | $msg = sprintf($format, @args); | |
88 | ||
89 | } else { | |
90 | $msg = "drbd error: got error code $code"; | |
91 | } | |
92 | ||
31ba75ff | 93 | chomp $msg; |
31ba75ff DM |
94 | die "drbd error: $msg\n"; |
95 | } | |
96 | ||
97 | return undef; | |
eab90afd DM |
98 | } |
99 | ||
100 | sub drbd_list_volumes { | |
101 | my ($hdl) = @_; | |
102 | ||
103 | $hdl = connect_drbdmanage_service() if !$hdl; | |
104 | ||
105 | my ($rc, $res) = $hdl->list_volumes([], 0, {}, []); | |
31ba75ff | 106 | check_drbd_res($rc); |
eab90afd DM |
107 | |
108 | my $volumes = {}; | |
109 | ||
110 | foreach my $entry (@$res) { | |
111 | my ($volname, $properties, $vol_list) = @$entry; | |
112 | ||
113 | next if $volname !~ m/^vm-(\d+)-/; | |
114 | my $vmid = $1; | |
115 | ||
116 | # fixme: we always use volid 0 ? | |
117 | my $size = 0; | |
118 | foreach my $volentry (@$vol_list) { | |
119 | my ($vol_id, $vol_properties) = @$volentry; | |
120 | next if $vol_id != 0; | |
121 | my $vol_size = $vol_properties->{vol_size} * 1024; | |
122 | $size = $vol_size if $vol_size > $size; | |
123 | } | |
124 | ||
125 | $volumes->{$volname} = { format => 'raw', size => $size, | |
126 | vmid => $vmid }; | |
127 | } | |
128 | ||
129 | return $volumes; | |
130 | } | |
131 | ||
14770890 DM |
132 | # Storage implementation |
133 | ||
134 | sub parse_volname { | |
135 | my ($class, $volname) = @_; | |
136 | ||
137 | if ($volname =~ m/^(vm-(\d+)-[a-z][a-z0-9\-\_\.]*[a-z0-9]+)$/) { | |
7800e84d | 138 | return ('images', $1, $2, undef, undef, undef, 'raw'); |
14770890 DM |
139 | } |
140 | ||
141 | die "unable to parse lvm volume name '$volname'\n"; | |
142 | } | |
143 | ||
144 | sub filesystem_path { | |
e67069eb DM |
145 | my ($class, $scfg, $volname, $snapname) = @_; |
146 | ||
147 | die "drbd snapshot is not implemented\n" if defined($snapname); | |
14770890 DM |
148 | |
149 | my ($vtype, $name, $vmid) = $class->parse_volname($volname); | |
150 | ||
eab90afd DM |
151 | # fixme: always use volid 0? |
152 | my $path = "/dev/drbd/by-res/$volname/0"; | |
14770890 DM |
153 | |
154 | return wantarray ? ($path, $vmid, $vtype) : $path; | |
155 | } | |
156 | ||
157 | sub create_base { | |
158 | my ($class, $storeid, $scfg, $volname) = @_; | |
159 | ||
160 | die "can't create base images in drbd storage\n"; | |
161 | } | |
162 | ||
163 | sub clone_image { | |
164 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; | |
165 | ||
166 | die "can't clone images in drbd storage\n"; | |
167 | } | |
168 | ||
169 | sub alloc_image { | |
170 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
171 | ||
172 | die "unsupported format '$fmt'" if $fmt ne 'raw'; | |
173 | ||
47dbb901 | 174 | die "illegal name '$name' - should be 'vm-$vmid-*'\n" |
69a093c7 | 175 | if defined($name) && $name !~ m/^vm-$vmid-/; |
14770890 | 176 | |
eab90afd DM |
177 | my $hdl = connect_drbdmanage_service(); |
178 | my $volumes = drbd_list_volumes($hdl); | |
14770890 | 179 | |
69a093c7 | 180 | die "volume '$name' already exists\n" if defined($name) && $volumes->{$name}; |
eab90afd | 181 | |
69a093c7 | 182 | if (!defined($name)) { |
14770890 DM |
183 | for (my $i = 1; $i < 100; $i++) { |
184 | my $tn = "vm-$vmid-disk-$i"; | |
eab90afd | 185 | if (!defined ($volumes->{$tn})) { |
14770890 DM |
186 | $name = $tn; |
187 | last; | |
188 | } | |
189 | } | |
190 | } | |
191 | ||
192 | die "unable to allocate an image name for VM $vmid in storage '$storeid'\n" | |
69a093c7 | 193 | if !defined($name); |
9e4632c2 | 194 | |
eab90afd | 195 | my ($rc, $res) = $hdl->create_resource($name, {}); |
31ba75ff | 196 | check_drbd_res($rc); |
14770890 | 197 | |
eab90afd | 198 | ($rc, $res) = $hdl->create_volume($name, $size, {}); |
31ba75ff | 199 | check_drbd_res($rc); |
14770890 | 200 | |
98e250aa DM |
201 | ($rc, $res) = $hdl->set_drbdsetup_props( |
202 | { | |
203 | target => "resource", | |
204 | resource => $name, | |
205 | type => 'neto', | |
206 | 'allow-two-primaries' => 'yes', | |
207 | }); | |
31ba75ff | 208 | check_drbd_res($rc); |
9e4632c2 | 209 | |
b0e0ed1a DM |
210 | my $redundancy = get_redundancy($scfg);; |
211 | ||
212 | ($rc, $res) = $hdl->auto_deploy($name, $redundancy, 0, 0); | |
213 | check_drbd_res($rc); | |
214 | ||
14770890 DM |
215 | return $name; |
216 | } | |
217 | ||
218 | sub free_image { | |
219 | my ($class, $storeid, $scfg, $volname, $isBase) = @_; | |
220 | ||
eab90afd DM |
221 | my $hdl = connect_drbdmanage_service(); |
222 | my ($rc, $res) = $hdl->remove_resource($volname, 0); | |
31ba75ff | 223 | check_drbd_res($rc); |
14770890 DM |
224 | |
225 | return undef; | |
226 | } | |
227 | ||
228 | sub list_images { | |
229 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
230 | ||
231 | my $vgname = $scfg->{vgname}; | |
232 | ||
eab90afd DM |
233 | $cache->{drbd_volumes} = drbd_list_volumes() if !$cache->{drbd_volumes}; |
234 | ||
14770890 DM |
235 | my $res = []; |
236 | ||
eab90afd DM |
237 | my $dat = $cache->{drbd_volumes}; |
238 | ||
239 | foreach my $volname (keys %$dat) { | |
240 | ||
241 | my $owner = $dat->{$volname}->{vmid}; | |
242 | ||
243 | my $volid = "$storeid:$volname"; | |
244 | ||
245 | if ($vollist) { | |
246 | my $found = grep { $_ eq $volid } @$vollist; | |
247 | next if !$found; | |
248 | } else { | |
249 | next if defined ($vmid) && ($owner ne $vmid); | |
250 | } | |
251 | ||
252 | my $info = $dat->{$volname}; | |
253 | $info->{volid} = $volid; | |
254 | ||
255 | push @$res, $info; | |
256 | } | |
257 | ||
14770890 DM |
258 | return $res; |
259 | } | |
260 | ||
261 | sub status { | |
262 | my ($class, $storeid, $scfg, $cache) = @_; | |
263 | ||
5d6a88b0 DM |
264 | my ($total, $avail, $used); |
265 | ||
eab90afd DM |
266 | eval { |
267 | my $hdl = connect_drbdmanage_service(); | |
fb0e1d93 | 268 | my $redundancy = get_redundancy($scfg);; |
2e346fd4 | 269 | my ($rc, $free_space, $total_space) = $hdl->cluster_free_query($redundancy); |
31ba75ff | 270 | check_drbd_res($rc); |
eab90afd | 271 | |
82548118 DM |
272 | $avail = $free_space*1024; |
273 | $total = $total_space*1024; | |
274 | $used = $total - $avail; | |
eab90afd | 275 | |
eab90afd | 276 | }; |
5d6a88b0 DM |
277 | if (my $err = $@) { |
278 | # ignore error, | |
279 | # assume storage if offline | |
14770890 | 280 | |
5d6a88b0 DM |
281 | return undef; |
282 | } | |
283 | ||
284 | return ($total, $avail, $used, 1); | |
14770890 DM |
285 | } |
286 | ||
287 | sub activate_storage { | |
288 | my ($class, $storeid, $scfg, $cache) = @_; | |
289 | ||
290 | return undef; | |
291 | } | |
292 | ||
293 | sub deactivate_storage { | |
294 | my ($class, $storeid, $scfg, $cache) = @_; | |
295 | ||
296 | return undef; | |
297 | } | |
298 | ||
299 | sub activate_volume { | |
02e797b8 WL |
300 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; |
301 | ||
302 | die "Snapshot not implemented on DRBD\n" if $snapname; | |
14770890 | 303 | |
28d58512 DM |
304 | my $path = $class->path($scfg, $volname); |
305 | ||
306 | my $hdl = connect_drbdmanage_service(); | |
307 | my $nodename = PVE::INotify::nodename(); | |
046fd4cb | 308 | my ($rc, $res) = $hdl->list_assignments([$nodename], [$volname], 0, {}, []); |
31ba75ff | 309 | check_drbd_res($rc); |
28d58512 | 310 | |
046fd4cb PM |
311 | # assignment already exists? |
312 | return undef if @$res; | |
28d58512 DM |
313 | |
314 | # create diskless assignment | |
315 | ($rc, $res) = $hdl->assign($nodename, $volname, { diskless => 'true' }); | |
31ba75ff | 316 | check_drbd_res($rc); |
466183d6 | 317 | |
0bdf560c | 318 | # wait until device is accessible |
466183d6 DM |
319 | my $print_warning = 1; |
320 | my $max_wait_time = 20; | |
321 | for (my $i = 0;; $i++) { | |
99136653 DM |
322 | if (1) { |
323 | # clumsy, but works | |
324 | last if system("dd if=$path of=/dev/null bs=512 count=1 >/dev/null 2>&1") == 0; | |
325 | } else { | |
326 | # correct, but does not work? | |
327 | ($rc, $res) = $hdl->list_assignments([$nodename], [$volname], 0, { "cstate:deploy" => "true" }, []); | |
328 | check_drbd_res($rc); | |
329 | my $len = scalar(@$res); | |
330 | last if $len > 0; | |
331 | } | |
466183d6 DM |
332 | die "aborting wait - device '$path' still not readable\n" if $i > $max_wait_time; |
333 | print "waiting for device '$path' to become ready...\n" if $print_warning; | |
334 | $print_warning = 0; | |
335 | sleep(1); | |
336 | } | |
4959ea20 | 337 | |
14770890 DM |
338 | return undef; |
339 | } | |
340 | ||
341 | sub deactivate_volume { | |
02e797b8 WL |
342 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; |
343 | ||
344 | die "Snapshot not implemented on DRBD\n" if $snapname; | |
14770890 | 345 | |
ae9e512e DM |
346 | return undef; # fixme: should we unassign ? |
347 | ||
348 | # remove above return to enable this code | |
349 | my $hdl = connect_drbdmanage_service(); | |
350 | my $nodename = PVE::INotify::nodename(); | |
351 | my ($rc, $res) = $hdl->list_assignments([$nodename], [$volname], 0, | |
352 | { "cstate:diskless" => "true" }, []); | |
353 | check_drbd_res($rc); | |
354 | if (scalar(@$res)) { | |
355 | my ($rc, $res) = $hdl->unassign($nodename, $volname,0); | |
356 | check_drbd_res($rc); | |
357 | } | |
358 | ||
14770890 DM |
359 | return undef; |
360 | } | |
361 | ||
362 | sub volume_resize { | |
363 | my ($class, $scfg, $storeid, $volname, $size, $running) = @_; | |
364 | ||
365 | $size = ($size/1024/1024) . "M"; | |
366 | ||
367 | my $path = $class->path($scfg, $volname); | |
368 | ||
eab90afd DM |
369 | # fixme: howto implement this |
370 | die "drbd volume_resize is not implemented"; | |
14770890 DM |
371 | |
372 | #my $cmd = ['/sbin/lvextend', '-L', $size, $path]; | |
373 | #run_command($cmd, errmsg => "error resizing volume '$path'"); | |
374 | ||
375 | return 1; | |
376 | } | |
377 | ||
378 | sub volume_snapshot { | |
379 | my ($class, $scfg, $storeid, $volname, $snap, $running) = @_; | |
380 | ||
381 | die "drbd snapshot is not implemented"; | |
382 | } | |
383 | ||
384 | sub volume_snapshot_rollback { | |
385 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
386 | ||
387 | die "drbd snapshot rollback is not implemented"; | |
388 | } | |
389 | ||
390 | sub volume_snapshot_delete { | |
391 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
392 | ||
393 | die "drbd snapshot delete is not implemented"; | |
394 | } | |
395 | ||
396 | sub volume_has_feature { | |
397 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
398 | ||
399 | my $features = { | |
400 | copy => { base => 1, current => 1}, | |
401 | }; | |
402 | ||
403 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
404 | $class->parse_volname($volname); | |
405 | ||
406 | my $key = undef; | |
407 | if($snapname){ | |
408 | $key = 'snap'; | |
409 | }else{ | |
410 | $key = $isBase ? 'base' : 'current'; | |
411 | } | |
412 | return 1 if $features->{$feature}->{$key}; | |
413 | ||
414 | return undef; | |
415 | } | |
416 | ||
417 | 1; |