]>
Commit | Line | Data |
---|---|---|
610798bc DM |
1 | package PVE::Storage::LvmThinPlugin; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
15334c83 | 5 | use Data::Dumper; |
610798bc DM |
6 | use IO::File; |
7 | use PVE::Tools qw(run_command trim); | |
8 | use PVE::Storage::Plugin; | |
15334c83 | 9 | use PVE::Storage::LVMPlugin; |
610798bc DM |
10 | use PVE::JSONSchema qw(get_standard_option); |
11 | ||
12 | # see: man lvmthin | |
15334c83 DM |
13 | # lvcreate -n ThinDataLV -L LargeSize VG |
14 | # lvconvert --type thin-pool VG/ThinDataLV | |
15 | # lvcreate -n pvepool -L 20G pve | |
16 | # lvconvert --type thin-pool pve/pvepool | |
610798bc DM |
17 | |
18 | use base qw(PVE::Storage::LVMPlugin); | |
19 | ||
20 | sub type { | |
21 | return 'lvmthin'; | |
22 | } | |
23 | ||
24 | sub plugindata { | |
25 | return { | |
26 | content => [ {images => 1, rootdir => 1}, { images => 1, rootdir => 1}], | |
27 | }; | |
28 | } | |
29 | ||
30 | sub properties { | |
31 | return { | |
32 | thinpool => { | |
33 | description => "LVM thin pool LV name.", | |
34 | type => 'string', format => 'pve-storage-vgname', | |
35 | }, | |
36 | }; | |
37 | } | |
38 | ||
39 | sub options { | |
40 | return { | |
41 | thinpool => { fixed => 1 }, | |
42 | vgname => { fixed => 1 }, | |
43 | nodes => { optional => 1 }, | |
44 | disable => { optional => 1 }, | |
45 | content => { optional => 1 }, | |
46 | }; | |
47 | } | |
48 | ||
f1b59efc DM |
49 | sub parse_volname { |
50 | my ($class, $volname) = @_; | |
51 | ||
52 | PVE::Storage::Plugin::parse_lvm_name($volname); | |
53 | ||
54 | if ($volname =~ m/^((vm|base)-(\d+)-\S+)$/) { | |
55 | return ('images', $1, $3, undef, undef, $2 eq 'base', 'raw'); | |
56 | } | |
57 | ||
58 | die "unable to parse lvm volume name '$volname'\n"; | |
59 | } | |
60 | ||
610798bc DM |
61 | sub alloc_image { |
62 | my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_; | |
63 | ||
64 | die "unsupported format '$fmt'" if $fmt ne 'raw'; | |
65 | ||
15334c83 | 66 | die "illegal name '$name' - sould be 'vm-$vmid-*'\n" |
610798bc DM |
67 | if $name && $name !~ m/^vm-$vmid-/; |
68 | ||
f1b59efc | 69 | my $vgs = PVE::Storage::LVMPlugin::lvm_vgs(); |
5b41084a | 70 | |
15334c83 DM |
71 | my $vg = $scfg->{vgname}; |
72 | ||
5b41084a DM |
73 | die "no such volume group '$vg'\n" if !defined ($vgs->{$vg}); |
74 | ||
f1b59efc | 75 | my $lvs = PVE::Storage::LVMPlugin::lvm_list_volumes($vg); |
15334c83 | 76 | |
f1b59efc DM |
77 | $name = PVE::Storage::LVMPlugin::lvm_find_free_diskname($lvs, $vg, $storeid, $vmid) |
78 | if !$name; | |
15334c83 DM |
79 | |
80 | my $cmd = ['/sbin/lvcreate', '-aly', '-V', "${size}k", '--name', $name, | |
81 | '--thinpool', "$vg/$scfg->{thinpool}" ]; | |
82 | ||
83 | run_command($cmd, errmsg => "lvcreate '$vg/$name' error"); | |
84 | ||
85 | return $name; | |
610798bc DM |
86 | } |
87 | ||
88 | sub free_image { | |
89 | my ($class, $storeid, $scfg, $volname, $isBase) = @_; | |
90 | ||
91 | my $vg = $scfg->{vgname}; | |
663372bc DM |
92 | |
93 | my $lvs = PVE::Storage::LVMPlugin::lvm_list_volumes($vg); | |
94 | ||
95 | if (my $dat = $lvs->{$scfg->{vgname}}) { | |
96 | ||
97 | # remove all volume snapshots first | |
98 | foreach my $lv (keys %$dat) { | |
99 | next if $lv !~ m/^snap_${volname}_(\w+)$/; | |
100 | my $cmd = ['/sbin/lvremove', '-f', "$vg/$lv"]; | |
101 | run_command($cmd, errmsg => "lvremove snapshot '$vg/$lv' error"); | |
102 | } | |
103 | ||
104 | # finally remove original (if exists) | |
105 | if ($dat->{$volname}) { | |
106 | my $cmd = ['/sbin/lvremove', '-f', "$vg/$volname"]; | |
107 | run_command($cmd, errmsg => "lvremove '$vg/$volname' error"); | |
108 | } | |
109 | } | |
610798bc DM |
110 | |
111 | return undef; | |
112 | } | |
113 | ||
114 | sub list_images { | |
115 | my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_; | |
116 | ||
15334c83 DM |
117 | my $vgname = $scfg->{vgname}; |
118 | ||
119 | $cache->{lvs} = PVE::Storage::LVMPlugin::lvm_list_volumes() if !$cache->{lvs}; | |
120 | ||
121 | my $res = []; | |
122 | ||
123 | if (my $dat = $cache->{lvs}->{$vgname}) { | |
124 | ||
125 | foreach my $volname (keys %$dat) { | |
126 | ||
f1b59efc DM |
127 | next if $volname !~ m/^(vm|base)-(\d+)-/; |
128 | my $owner = $2; | |
15334c83 DM |
129 | |
130 | my $info = $dat->{$volname}; | |
131 | ||
132 | next if $info->{lv_type} ne 'V'; | |
133 | ||
134 | next if $info->{pool_lv} ne $scfg->{thinpool}; | |
135 | ||
136 | my $volid = "$storeid:$volname"; | |
137 | ||
138 | if ($vollist) { | |
139 | my $found = grep { $_ eq $volid } @$vollist; | |
140 | next if !$found; | |
141 | } else { | |
142 | next if defined($vmid) && ($owner ne $vmid); | |
143 | } | |
144 | ||
145 | push @$res, { | |
146 | volid => $volid, format => 'raw', size => $info->{lv_size}, vmid => $owner, | |
147 | }; | |
148 | } | |
149 | } | |
150 | ||
151 | return $res; | |
610798bc DM |
152 | } |
153 | ||
154 | sub status { | |
155 | my ($class, $storeid, $scfg, $cache) = @_; | |
156 | ||
157 | my $lvname = "$scfg->{vgname}/$scfg->{thinpool}"; | |
15334c83 DM |
158 | |
159 | $cache->{lvs} = PVE::Storage::LVMPlugin::lvm_list_volumes() if !$cache->{lvs}; | |
160 | ||
161 | my $lvs = $cache->{lvs}; | |
162 | ||
163 | return undef if !$lvs->{$scfg->{vgname}}; | |
164 | ||
165 | my $info = $lvs->{$scfg->{vgname}}->{$scfg->{thinpool}}; | |
166 | ||
167 | return undef if !$info; | |
168 | ||
169 | return undef if $info->{lv_type} ne 't'; | |
170 | ||
171 | return ($info->{lv_size}, $info->{lv_size} - $info->{used}, $info->{used}, 1) if $info->{lv_size}; | |
610798bc DM |
172 | |
173 | return undef; | |
174 | } | |
175 | ||
176 | sub activate_volume { | |
177 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; | |
15334c83 | 178 | |
663372bc DM |
179 | my $vg = $scfg->{vgname}; |
180 | ||
181 | # only snapshot volumes needs activation | |
182 | if ($snapname) { | |
183 | my $snapvol = "snap_${volname}_$snapname"; | |
184 | my $cmd = ['/sbin/lvchange', '-ay', '-K', "$vg/$snapvol"]; | |
185 | run_command($cmd, errmsg => "activate_volume '$vg/$snapvol' error"); | |
186 | } else { | |
187 | # other volumes are active by default | |
188 | } | |
610798bc DM |
189 | } |
190 | ||
191 | sub deactivate_volume { | |
192 | my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_; | |
15334c83 | 193 | |
663372bc DM |
194 | my $vg = $scfg->{vgname}; |
195 | ||
196 | # we only deactivate snapshot volumes | |
197 | if ($snapname) { | |
198 | my $snapvol = "snap_${volname}_$snapname"; | |
199 | my $cmd = ['/sbin/lvchange', '-an', "$vg/$snapvol"]; | |
200 | run_command($cmd, errmsg => "deactivate_volume '$vg/$snapvol' error"); | |
201 | } else { | |
202 | # other volumes are kept active | |
203 | } | |
610798bc DM |
204 | } |
205 | ||
f1b59efc DM |
206 | sub clone_image { |
207 | my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_; | |
208 | ||
209 | die "clone_image from snapshots not implemented" if $snap; | |
210 | ||
211 | my ($vtype, undef, undef, undef, undef, $isBase, $format) = | |
212 | $class->parse_volname($volname); | |
213 | ||
214 | die "clone_image only works on base images\n" if !$isBase; | |
215 | ||
216 | my $vg = $scfg->{vgname}; | |
217 | my $lvs = PVE::Storage::LVMPlugin::lvm_list_volumes($vg); | |
218 | ||
219 | my $name = PVE::Storage::LVMPlugin::lvm_find_free_diskname($lvs, $vg, $storeid, $vmid); | |
220 | ||
221 | my $cmd = ['/sbin/lvcreate', '-n', $name, '-prw', '-kn', '-s', "$vg/$volname"]; | |
222 | run_command($cmd, errmsg => "clone image '$vg/$volname' error"); | |
223 | ||
224 | return $name; | |
225 | } | |
226 | ||
227 | sub create_base { | |
228 | my ($class, $storeid, $scfg, $volname) = @_; | |
229 | ||
230 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
231 | $class->parse_volname($volname); | |
232 | ||
233 | die "create_base not possible with base image\n" if $isBase; | |
234 | ||
235 | my $vg = $scfg->{vgname}; | |
236 | my $lvs = PVE::Storage::LVMPlugin::lvm_list_volumes($vg); | |
237 | ||
238 | if (my $dat = $lvs->{$vg}) { | |
239 | # to avoid confusion, reject if we find volume snapshots | |
240 | foreach my $lv (keys %$dat) { | |
241 | die "unable to create base volume - found snaphost '$lv'\n" | |
242 | if $lv =~ m/^snap_${volname}_(\w+)$/; | |
243 | } | |
244 | } | |
245 | ||
246 | my $newname = $name; | |
247 | $newname =~ s/^vm-/base-/; | |
248 | ||
249 | my $cmd = ['/sbin/lvrename', $vg, $volname, $newname]; | |
250 | run_command($cmd, errmsg => "lvrename '$vg/$volname' => '$vg/$newname' error"); | |
251 | ||
252 | # set inactive, read-only and activationskip flags | |
253 | $cmd = ['/sbin/lvchange', '-an', '-pr', '-ky', "$vg/$newname"]; | |
254 | eval { run_command($cmd); }; | |
255 | warn $@ if $@; | |
256 | ||
257 | my $newvolname = $newname; | |
258 | ||
259 | return $newvolname; | |
260 | } | |
261 | ||
a9f0c6c4 | 262 | # sub volume_resize {} reuse code from parent class |
610798bc | 263 | |
663372bc DM |
264 | sub volume_snapshot { |
265 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
266 | ||
267 | my $vg = $scfg->{vgname}; | |
268 | my $snapvol = "snap_${volname}_$snap"; | |
269 | ||
270 | my $cmd = ['/sbin/lvcreate', '-n', $snapvol, '-pr', '-s', "$vg/$volname"]; | |
271 | run_command($cmd, errmsg => "lvcreate snapshot '$vg/$snapvol' error"); | |
272 | ||
273 | } | |
274 | ||
275 | sub volume_snapshot_rollback { | |
276 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
277 | ||
278 | my $vg = $scfg->{vgname}; | |
279 | my $snapvol = "snap_${volname}_$snap"; | |
280 | ||
281 | my $cmd = ['/sbin/lvremove', '-f', "$vg/$volname"]; | |
282 | run_command($cmd, errmsg => "lvremove '$vg/$volname' error"); | |
283 | ||
284 | $cmd = ['/sbin/lvcreate', '-kn', '-n', $volname, '-s', "$vg/$snapvol"]; | |
285 | run_command($cmd, errmsg => "lvm rollback '$vg/$snapvol' error"); | |
286 | } | |
287 | ||
288 | sub volume_snapshot_delete { | |
289 | my ($class, $scfg, $storeid, $volname, $snap) = @_; | |
290 | ||
291 | my $vg = $scfg->{vgname}; | |
292 | my $snapvol = "snap_${volname}_$snap"; | |
293 | ||
294 | my $cmd = ['/sbin/lvremove', '-f', "$vg/$snapvol"]; | |
295 | run_command($cmd, errmsg => "lvremove snapshot '$vg/$snapvol' error"); | |
296 | } | |
297 | ||
610798bc DM |
298 | sub volume_has_feature { |
299 | my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_; | |
300 | ||
301 | my $features = { | |
663372bc | 302 | snapshot => { current => 1 }, |
f1b59efc DM |
303 | clone => { base => 1}, |
304 | template => { current => 1}, | |
610798bc DM |
305 | copy => { base => 1, current => 1}, |
306 | }; | |
307 | ||
308 | my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = | |
309 | $class->parse_volname($volname); | |
310 | ||
311 | my $key = undef; | |
312 | if($snapname){ | |
313 | $key = 'snap'; | |
314 | }else{ | |
315 | $key = $isBase ? 'base' : 'current'; | |
316 | } | |
317 | return 1 if $features->{$feature}->{$key}; | |
318 | ||
319 | return undef; | |
320 | } | |
321 | ||
322 | 1; |