---
src/PVE/API2/LXC/Config.pm | 159 +++++++++++++++++++++++++++++++++++++++++++++
src/PVE/CLI/pct.pm | 2 +
2 files changed, 161 insertions(+)
diff --git a/src/PVE/API2/LXC/Config.pm b/src/PVE/API2/LXC/Config.pm
index 95eafaa..476e07c 100644
--- a/src/PVE/API2/LXC/Config.pm
+++ b/src/PVE/API2/LXC/Config.pm
@@ -149,4 +149,163 @@ __PACKAGE__->register_method({
return undef;
}});
+my $query_loopdev = sub {
+ my ($path) = @_;
+ my $found;
+ my $parser = sub {
+ my $line = shift;
+ if ($line =~ m@^(/dev/loop\d+):@) {
+ $found = $1;
+ }
+ };
+ my $cmd = ['losetup', '--associated', $path];
+ PVE::Tools::run_command($cmd, outfunc => $parser);
+ return $found;
+};
+
+__PACKAGE__->register_method({
+ name => 'resize_vm',
+ path => '{vmid}/resize',
+ method => 'PUT',
+ protected => 1,
+ proxyto => 'node',
+ description => "Resize a container mountpoint.",
+ permissions => {
+ check => ['perm', '/vms/{vmid}', $vm_config_perm_list, any => 1],
+ },
+ parameters => {
+ additionalProperties => 0,
+ properties => PVE::LXC::json_config_properties(
+ {
+ node => get_standard_option('pve-node'),
+ vmid => get_standard_option('pve-vmid'),
+ disk => {
+ type => 'string',
+ description => "The disk you want to resize.",
+ enum => [PVE::LXC::mountpoint_names()],
+ },
+ size => {
+ type => 'string',
+ pattern => '\+?\d+(\.\d+)?[KMGT]?',
+ description => "The new size. With the '+' sign the value
is added to the actual size of the volume and without it, the value is taken as
an absolute one. Shrinking disk size is not supported.",
+ },
+ digest => {
+ type => 'string',
+ description => 'Prevent changes if current configuration
file has different SHA1 digest. This can be used to prevent concurrent
modifications.',
+ maxLength => 40,
+ optional => 1,
+ }
+ }),
+ },
+ returns => { type => 'null'},
+ code => sub {
+ my ($param) = @_;
+
+ my $rpcenv = PVE::RPCEnvironment::get();
+
+ my $authuser = $rpcenv->get_user();
+
+ my $node = extract_param($param, 'node');
+
+ my $vmid = extract_param($param, 'vmid');
+
+ my $digest = extract_param($param, 'digest');
+
+ my $sizestr = extract_param($param, 'size');
+ die "invalid size string" if $sizestr !~
m/^(\+)?(\d+(\.\d+)?)([KMGT])?$/;
+ my ($ext, $newsize, $unit) = ($1, $2, $4);
+
+ die "no options specified\n" if !scalar(keys %$param);
+
+ PVE::LXC::check_ct_modify_config_perm($rpcenv, $authuser, $vmid, undef,
[keys %$param]);
+
+ my $storage_cfg = cfs_read_file("storage.cfg");
+
+ my $code = sub {
+
+ my $conf = PVE::LXC::load_config($vmid);
+ PVE::LXC::check_lock($conf);
+
+ PVE::Tools::assert_if_modified($digest, $conf->{digest});
+
+ my $running = PVE::LXC::check_running($vmid);
+
+ my $disk = $param->{disk};
+ my $mp = PVE::LXC::parse_ct_mountpoint($conf->{$disk});
+ my $volid = $mp->{volume};
+
+ my (undef, undef, $owner, undef, undef, undef, $format) =
+ PVE::Storage::parse_volname($storage_cfg, $volid);
+
+ die "can't resize mountpoint owned by another container ($owner)"
+ if $vmid != $owner;
+
+ die "can't resize volume: $disk if snapshot exists\n"
+ if %{$conf->{snapshots}} && $format eq 'qcow2';
+
+ my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid);
+
+ $rpcenv->check($authuser, "/storage/$storeid",
['Datastore.AllocateSpace']);
+
+ my $size = PVE::Storage::volume_size_info($storage_cfg, $volid, 5);
+ # FIXME: also in PVE::API2::Qemu (PVE::Tools candidate?)
+ if ($unit) {
+ if ($unit eq 'K') {
+ $newsize = $newsize * 1024;
+ } elsif ($unit eq 'M') {
+ $newsize = $newsize * 1024 * 1024;
+ } elsif ($unit eq 'G') {
+ $newsize = $newsize * 1024 * 1024 * 1024;
+ } elsif ($unit eq 'T') {
+ $newsize = $newsize * 1024 * 1024 * 1024 * 1024;
+ }
+ }
+ $newsize += $size if $ext;
+ $newsize = int($newsize);
+
+ die "unable to skrink disk size\n" if $newsize < $size;
+
+ return if $size == $newsize;
+
+ PVE::Cluster::log_msg('info', $authuser, "update CT $vmid: resize
--disk $disk --size $sizestr");
+
+ # FIXME: volume_resize doesn't do anything if $running=1?
+ PVE::Storage::volume_resize($storage_cfg, $volid, $newsize, 0);
+
+ $mp->{size} = $newsize/1024; # kB
+ $conf->{$disk} = PVE::LXC::print_ct_mountpoint($mp, $disk eq
'rootfs');
+
+ PVE::LXC::write_config($vmid, $conf);
+
+ if ($format eq 'raw') {
+ my $path = PVE::Storage::path($storage_cfg, $volid, undef);
+ if ($running) {
+ # NOTE: do not use loopdevices_list as losetup's paths get
scrambled after a container started
+ # (possibly due to namespaces?)
+ $path = &$query_loopdev($path);
+ die "internal error: CT running but mountpoint not attached
to a loop device"
+ if !$path; # fixme: zvols and other storages?
+ PVE::Tools::run_command(['losetup', '--set-capacity',
$path]);
+
+ # In order for resize2fs to know that we need
online-resizing a mountpoint needs
+ # to be visible to it in its namespace.
+ # To not interfere with the rest of the system we unshare
the current mount namespace,
+ # mount over /tmp and then run resize2fs.
+
+ # interestingly we don't need to e2fsck on mounted
systems...
+ my $quoted = PVE::Tools::shellquote($path);
+ my $cmd = "mount --make-rprivate / && mount $quoted /tmp &&
resize2fs $quoted";
+ PVE::Tools::run_command(['unshare', '-m', '--', 'sh', '-c',
$cmd]);
+ } else {
+ PVE::Tools::run_command(['e2fsck', '-f', '-y', $path]);
+ PVE::Tools::run_command(['resize2fs', $path]);
+ }
+ }
+ };
+
+ PVE::LXC::lock_container($vmid, undef, $code);
+
+ return undef;
+ }});
+
1;
diff --git a/src/PVE/CLI/pct.pm b/src/PVE/CLI/pct.pm
index ac67e07..8c56f89 100755
--- a/src/PVE/CLI/pct.pm
+++ b/src/PVE/CLI/pct.pm
@@ -147,6 +147,8 @@ our $cmddef = {
}
}],
set => [ 'PVE::API2::LXC::Config', 'update_vm', ['vmid'], { node =>
$nodename }],
+
+ resize => [ "PVE::API2::LXC::Config", 'resize_vm', ['vmid', 'disk',
'size'], { node => $nodename } ],
create => [ 'PVE::API2::LXC', 'create_vm', ['vmid', 'ostemplate'], { node
=> $nodename }, $upid_exit ],
restore => [ 'PVE::API2::LXC', 'create_vm', ['vmid', 'ostemplate'], { node
=> $nodename, restore => 1 }, $upid_exit ],
--
2.1.4
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