[pve-devel] [PATCH qemu-server v2 1/3] vga: allow live-migration with clipboard

[Markus Frank]

The live-migration feature now works with QEMU 10.1:
5d56bff11e ("ui/vdagent: add migration support")

Signed-off-by: Markus Frank <m.frank at proxmox.com>
---
v2:
* add machine version check to ensure QEMU version is at least 10.1.

 src/PVE/API2/Qemu.pm   | 4 +++-
 src/PVE/QemuMigrate.pm | 6 +++++-
 src/PVE/QemuServer.pm  | 4 ++--
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/PVE/API2/Qemu.pm b/src/PVE/API2/Qemu.pm
index 190878de..3ab0afcf 100644
--- a/src/PVE/API2/Qemu.pm
+++ b/src/PVE/API2/Qemu.pm
@@ -5300,7 +5300,9 @@ __PACKAGE__->register_method({
 
         my $vga = PVE::QemuServer::parse_vga($vmconf->{vga});
         if ($res->{running} && $vga->{'clipboard'} && $vga->{'clipboard'} eq 'vnc') {
-            push $local_resources->@*, "clipboard=vnc";
+            my $machine_version = PVE::QemuServer::Machine::get_current_qemu_machine($vmid);
+            push $local_resources->@*, "clipboard=vnc"
+                if !PVE::QemuServer::Machine::is_machine_version_at_least($machine_version, 10, 1);
         }
 
         $res->{allowed_nodes} = [];
diff --git a/src/PVE/QemuMigrate.pm b/src/PVE/QemuMigrate.pm
index b3ddc34e..829288ff 100644
--- a/src/PVE/QemuMigrate.pm
+++ b/src/PVE/QemuMigrate.pm
@@ -301,7 +301,11 @@ sub prepare {
 
     my $vga = PVE::QemuServer::parse_vga($conf->{vga});
     if ($running && $vga->{'clipboard'} && $vga->{'clipboard'} eq 'vnc') {
-        die "VMs with 'clipboard' set to 'vnc' are not live migratable!\n";
+        my $machine_version = PVE::QemuServer::Machine::get_current_qemu_machine($vmid);
+        if (!PVE::QemuServer::Machine::is_machine_version_at_least($machine_version, 10, 1)) {
+            die "VMs with 'clipboard' set to 'vnc' are not live migratable with"
+                . " QEMU/machine versions older than 10.1!\n";
+        }
     }
 
     my $vollist = PVE::QemuServer::get_vm_volumes($conf);
diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index 69991843..ecf64fea 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -177,8 +177,8 @@ my $vga_fmt = {
     },
     clipboard => {
         description =>
-            'Enable a specific clipboard. If not set, depending on the display type the'
-            . ' SPICE one will be added. Migration with VNC clipboard is not yet supported!',
+            'Enable a specific clipboard. If not set, depending on the display type the SPICE one'
+            . ' will be added. Live migration is not possible with QEMU version < 10.1.',
         type => 'string',
         enum => ['vnc'],
         optional => 1,
-- 
2.47.3