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fix #3593: add affinity to qemu

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Reuse the PVE::CpuSet to validate cpuset formatting.
Add new qemu property called 'affinity' to store the cpuset.
Push taskset command in front of kvm if 'affinity' is set.

Signed-off-by: Daniel Bowder <daniel@bowdernet.com>
This commit is contained in:
Daniel Bowder 2022-06-30 17:09:45 -07:00 committed by Wolfgang Bumiller
parent 6fa358a334
commit 8387039819
1 changed files with 27 additions and 0 deletions
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27
PVE/QemuServer.pm
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@ -28,6 +28,7 @@ use UUID;
use PVE::Cluster qw(cfs_register_file cfs_read_file cfs_write_file);
use PVE::CGroup;
use PVE::CpuSet;
use PVE::DataCenterConfig;
use PVE::Exception qw(raise raise_param_exc);
use PVE::Format qw(render_duration render_bytes);
@ -707,6 +708,11 @@ EODESCR
description => "Some (read-only) meta-information about this guest.",
optional => 1,
},
affinity => {
type => 'string', format => 'pve-cpuset',
description => "List of host cores used to execute guest processes.",
optional => 1,
},
};
my $cicustom_fmt = {
@ -1026,6 +1032,20 @@ foreach my $key (keys %$confdesc_cloudinit) {
$confdesc->{$key} = $confdesc_cloudinit->{$key};
}
PVE::JSONSchema::register_format('pve-cpuset', \&pve_verify_cpuset);
sub pve_verify_cpuset {
my ($set_text, $noerr) = @_;
my ($count, $members) = eval { PVE::CpuSet::parse_cpuset($set_text) };
if ($@) {
return if $noerr;
die "unable to parse cpuset option\n";
}
return PVE::CpuSet->new($members)->short_string();
}
PVE::JSONSchema::register_format('pve-volume-id-or-qm-path', \&verify_volume_id_or_qm_path);
sub verify_volume_id_or_qm_path {
my ($volid, $noerr) = @_;
@ -3532,6 +3552,13 @@ sub config_to_command {
my $use_old_bios_files = undef;
($use_old_bios_files, $machine_type) = qemu_use_old_bios_files($machine_type);
if ($conf->{affinity}) {
push @$cmd, "taskset";
push @$cmd, "--cpu-list";
push @$cmd, "--all-tasks";
push @$cmd, $conf->{affinity};
}
push @$cmd, $kvm_binary;
push @$cmd, '-id', $vmid;