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