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