Proxmox/qemu-server
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add iothread/dataplane support

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new config option:

iothread: 1|0

This enable iothread/dataplane support, to improve io performance on fast storages

Currently block jobs don't work yet, it's planned for qemu 2.2.
So it's better to not expose yet this option in gui.

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This commit is contained in:
Alexandre Derumier 2014-10-10 04:05:44 +02:00 committed by Dietmar Maurer
parent 88e9d6bc50
commit 7183bd9a8f
1 changed files with 9 additions and 0 deletions
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9
PVE/QemuServer.pm
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@ -152,6 +152,12 @@ mkdir $lock_dir;
my $pcisysfs = "/sys/bus/pci";
my $confdesc = {
iothread => {
optional => 1,
type => 'boolean',
description => "Enable iothread dataplane.",
default => 0,
},
onboot => {
optional => 1,
type => 'boolean',
@ -1090,6 +1096,7 @@ sub print_drivedevice_full {
if ($drive->{interface} eq 'virtio') {
my $pciaddr = print_pci_addr("$drive->{interface}$drive->{index}", $bridges);
$device = "virtio-blk-pci,drive=drive-$drive->{interface}$drive->{index},id=$drive->{interface}$drive->{index}$pciaddr";
$device .= ",iothread=iothread0" if $conf->{iothread};
} elsif ($drive->{interface} eq 'scsi') {
$maxdev = ($conf->{scsihw} && ($conf->{scsihw} !~ m/^lsi/)) ? 256 : 7;
my $controller = int($drive->{index} / $maxdev);
@ -2438,6 +2445,8 @@ sub config_to_command {
push @$cmd, '-smbios', "type=1,$conf->{smbios1}";
}
push @$cmd, '-object', "iothread,id=iothread0" if $conf->{iothread};
if ($q35) {
# the q35 chipset support native usb2, so we enable usb controller
# by default for this machine type