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cpu hotplug : add cpu hot-unplug support

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Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This commit is contained in:
Alexandre Derumier 2016-10-17 12:18:56 +02:00 committed by Wolfgang Bumiller
parent 69c81430e0
commit 1e881b75d8
1 changed files with 28 additions and 2 deletions
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30
PVE/QemuServer.pm
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@ -3761,6 +3761,8 @@ sub qemu_usb_hotplug {
sub qemu_cpu_hotplug {
my ($vmid, $conf, $vcpus) = @_;
my $machine_type = PVE::QemuServer::get_current_qemu_machine($vmid);
my $sockets = 1;
$sockets = $conf->{smp} if $conf->{smp}; # old style - no longer iused
$sockets = $conf->{sockets} if $conf->{sockets};
@ -3773,8 +3775,32 @@ sub qemu_cpu_hotplug {
if $vcpus > $maxcpus;
my $currentvcpus = $conf->{vcpus} || $maxcpus;
die "online cpu unplug is not yet possible\n"
if $vcpus < $currentvcpus;
if ($vcpus < $currentvcpus) {
if (qemu_machine_feature_enabled ($machine_type, undef, 2, 7)) {
for (my $i = $currentvcpus; $i > $vcpus; $i--) {
qemu_devicedel($vmid, "cpu$i");
my $retry = 0;
my $currentrunningvcpus = undef;
while (1) {
$currentrunningvcpus = vm_mon_cmd($vmid, "query-cpus");
last if scalar(@{$currentrunningvcpus}) == $i-1;
raise_param_exc({ "cpu unplug" => "error unplug cpu$i" }) if $retry > 5;
$retry++;
sleep 1;
}
#update conf after each succesfull cpu unplug
$conf->{vcpus} = scalar(@{$currentrunningvcpus});
PVE::QemuConfig->write_config($vmid, $conf);
}
} else {
die "online cpu unplug is only possible since qemu 2.7\n"
}
return;
}
my $currentrunningvcpus = vm_mon_cmd($vmid, "query-cpus");
die "vcpus in running vm is different than configuration\n"