]>
git.proxmox.com Git - pve-storage.git/blob - PVE/Storage/LvmThinPlugin.pm
1 package PVE
::Storage
::LvmThinPlugin
;
7 use PVE
::Tools
qw(run_command trim);
8 use PVE
::Storage
::Plugin
;
9 use PVE
::Storage
::LVMPlugin
;
10 use PVE
::JSONSchema
qw(get_standard_option);
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
18 use base
qw(PVE::Storage::LVMPlugin);
26 content
=> [ {images
=> 1, rootdir
=> 1}, { images
=> 1, rootdir
=> 1}],
33 description
=> "LVM thin pool LV name.",
34 type
=> 'string', format
=> 'pve-storage-vgname',
41 thinpool
=> { fixed
=> 1 },
42 vgname
=> { fixed
=> 1 },
43 nodes
=> { optional
=> 1 },
44 disable
=> { optional
=> 1 },
45 content
=> { optional
=> 1 },
50 my ($class, $volname) = @_;
52 PVE
::Storage
::Plugin
::parse_lvm_name
($volname);
54 if ($volname =~ m/^((vm|base)-(\d+)-\S+)$/) {
55 return ('images', $1, $3, undef, undef, $2 eq 'base', 'raw');
58 die "unable to parse lvm volume name '$volname'\n";
62 my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_;
64 die "unsupported format '$fmt'" if $fmt ne 'raw';
66 die "illegal name '$name' - sould be 'vm-$vmid-*'\n"
67 if $name && $name !~ m/^vm-$vmid-/;
69 my $vgs = PVE
::Storage
::LVMPlugin
::lvm_vgs
();
71 my $vg = $scfg->{vgname
};
73 die "no such volume group '$vg'\n" if !defined ($vgs->{$vg});
75 my $lvs = PVE
::Storage
::LVMPlugin
::lvm_list_volumes
($vg);
77 $name = PVE
::Storage
::LVMPlugin
::lvm_find_free_diskname
($lvs, $vg, $storeid, $vmid)
80 my $cmd = ['/sbin/lvcreate', '-aly', '-V', "${size}k", '--name', $name,
81 '--thinpool', "$vg/$scfg->{thinpool}" ];
83 run_command
($cmd, errmsg
=> "lvcreate '$vg/$name' error");
89 my ($class, $storeid, $scfg, $volname, $isBase) = @_;
91 my $vg = $scfg->{vgname
};
93 my $lvs = PVE
::Storage
::LVMPlugin
::lvm_list_volumes
($vg);
95 if (my $dat = $lvs->{$scfg->{vgname
}}) {
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");
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");
115 my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_;
117 my $vgname = $scfg->{vgname
};
119 $cache->{lvs
} = PVE
::Storage
::LVMPlugin
::lvm_list_volumes
() if !$cache->{lvs
};
123 if (my $dat = $cache->{lvs
}->{$vgname}) {
125 foreach my $volname (keys %$dat) {
127 next if $volname !~ m/^(vm|base)-(\d+)-/;
130 my $info = $dat->{$volname};
132 next if $info->{lv_type
} ne 'V';
134 next if $info->{pool_lv
} ne $scfg->{thinpool
};
136 my $volid = "$storeid:$volname";
139 my $found = grep { $_ eq $volid } @$vollist;
142 next if defined($vmid) && ($owner ne $vmid);
146 volid
=> $volid, format
=> 'raw', size
=> $info->{lv_size
}, vmid
=> $owner,
155 my ($class, $storeid, $scfg, $cache) = @_;
157 my $lvname = "$scfg->{vgname}/$scfg->{thinpool}";
159 $cache->{lvs
} = PVE
::Storage
::LVMPlugin
::lvm_list_volumes
() if !$cache->{lvs
};
161 my $lvs = $cache->{lvs
};
163 return undef if !$lvs->{$scfg->{vgname
}};
165 my $info = $lvs->{$scfg->{vgname
}}->{$scfg->{thinpool
}};
167 return undef if !$info;
169 return undef if $info->{lv_type
} ne 't';
171 return ($info->{lv_size
}, $info->{lv_size
} - $info->{used
}, $info->{used
}, 1) if $info->{lv_size
};
176 sub activate_volume
{
177 my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
179 my $vg = $scfg->{vgname
};
181 # only snapshot volumes needs activation
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");
187 # other volumes are active by default
191 sub deactivate_volume
{
192 my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
194 my $vg = $scfg->{vgname
};
196 # we only deactivate snapshot volumes
198 my $snapvol = "snap_${volname}_$snapname";
199 my $cmd = ['/sbin/lvchange', '-an', "$vg/$snapvol"];
200 run_command
($cmd, errmsg
=> "deactivate_volume '$vg/$snapvol' error");
202 # other volumes are kept active
207 my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_;
209 die "clone_image from snapshots not implemented" if $snap;
211 my ($vtype, undef, undef, undef, undef, $isBase, $format) =
212 $class->parse_volname($volname);
214 die "clone_image only works on base images\n" if !$isBase;
216 my $vg = $scfg->{vgname
};
217 my $lvs = PVE
::Storage
::LVMPlugin
::lvm_list_volumes
($vg);
219 my $name = PVE
::Storage
::LVMPlugin
::lvm_find_free_diskname
($lvs, $vg, $storeid, $vmid);
221 my $cmd = ['/sbin/lvcreate', '-n', $name, '-prw', '-kn', '-s', "$vg/$volname"];
222 run_command
($cmd, errmsg
=> "clone image '$vg/$volname' error");
228 my ($class, $storeid, $scfg, $volname) = @_;
230 my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) =
231 $class->parse_volname($volname);
233 die "create_base not possible with base image\n" if $isBase;
235 my $vg = $scfg->{vgname
};
236 my $lvs = PVE
::Storage
::LVMPlugin
::lvm_list_volumes
($vg);
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+)$/;
247 $newname =~ s/^vm-/base-/;
249 my $cmd = ['/sbin/lvrename', $vg, $volname, $newname];
250 run_command
($cmd, errmsg
=> "lvrename '$vg/$volname' => '$vg/$newname' error");
252 # set inactive, read-only and activationskip flags
253 $cmd = ['/sbin/lvchange', '-an', '-pr', '-ky', "$vg/$newname"];
254 eval { run_command
($cmd); };
257 my $newvolname = $newname;
262 # sub volume_resize {} reuse code from parent class
264 sub volume_snapshot
{
265 my ($class, $scfg, $storeid, $volname, $snap) = @_;
267 my $vg = $scfg->{vgname
};
268 my $snapvol = "snap_${volname}_$snap";
270 my $cmd = ['/sbin/lvcreate', '-n', $snapvol, '-pr', '-s', "$vg/$volname"];
271 run_command
($cmd, errmsg
=> "lvcreate snapshot '$vg/$snapvol' error");
275 sub volume_snapshot_rollback
{
276 my ($class, $scfg, $storeid, $volname, $snap) = @_;
278 my $vg = $scfg->{vgname
};
279 my $snapvol = "snap_${volname}_$snap";
281 my $cmd = ['/sbin/lvremove', '-f', "$vg/$volname"];
282 run_command
($cmd, errmsg
=> "lvremove '$vg/$volname' error");
284 $cmd = ['/sbin/lvcreate', '-kn', '-n', $volname, '-s', "$vg/$snapvol"];
285 run_command
($cmd, errmsg
=> "lvm rollback '$vg/$snapvol' error");
288 sub volume_snapshot_delete
{
289 my ($class, $scfg, $storeid, $volname, $snap) = @_;
291 my $vg = $scfg->{vgname
};
292 my $snapvol = "snap_${volname}_$snap";
294 my $cmd = ['/sbin/lvremove', '-f', "$vg/$snapvol"];
295 run_command
($cmd, errmsg
=> "lvremove snapshot '$vg/$snapvol' error");
298 sub volume_has_feature
{
299 my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_;
302 snapshot
=> { current
=> 1 },
303 clone
=> { base
=> 1},
304 template
=> { current
=> 1},
305 copy
=> { base
=> 1, current
=> 1},
308 my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) =
309 $class->parse_volname($volname);
315 $key = $isBase ?
'base' : 'current';
317 return 1 if $features->{$feature}->{$key};