[pve-devel] [PATCH qemu-server 02/22] cfg2cmd: require at least QEMU binary version 6.0

[Fabian Grünbichler]

On June 12, 2025 4:02 pm, Fiona Ebner wrote:
> The minimum supported binary version for Proxmox VE 9 is QEMU 10.0, so
> there still is more than enough room for eventual regression testing
> with older binaries.

given that PVE 8.0 released with QEMU 8.0, and PVE 7.0 already with 6.0,
dropping support for < 6.0 in PVE 8 should be okay as well, right?

> 
> Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
> ---
>  PVE/QemuServer.pm          | 15 ++++++---------
>  test/cfg2cmd/old-qemu.conf |  4 ++--
>  2 files changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
> index bf0c8bfe..58a5cfa8 100644
> --- a/PVE/QemuServer.pm
> +++ b/PVE/QemuServer.pm
> @@ -1443,7 +1443,7 @@ my sub drive_uses_cache_direct {
>  }
>  
>  sub print_drive_commandline_full {
> -    my ($storecfg, $vmid, $drive, $live_restore_name, $io_uring) = @_;
> +    my ($storecfg, $vmid, $drive, $live_restore_name) = @_;
>  
>      my $drive_id = PVE::QemuServer::Drive::get_drive_id($drive);
>  
> @@ -1508,7 +1508,7 @@ sub print_drive_commandline_full {
>      $opts .= ",cache=none" if !$drive->{cache} && $cache_direct;
>  
>      if (!$drive->{aio}) {
> -	if ($io_uring && storage_allows_io_uring_default($scfg, $cache_direct)) {
> +	if (storage_allows_io_uring_default($scfg, $cache_direct)) {
>  	    # io_uring supports all cache modes
>  	    $opts .= ",aio=io_uring";
>  	} else {
> @@ -3478,9 +3478,9 @@ sub config_to_command {
>      my $kvm_binary = PVE::QemuServer::Helpers::get_command_for_arch($arch);
>      my $kvmver = kvm_user_version($kvm_binary);
>  
> -    if (!$kvmver || $kvmver !~ m/^(\d+)\.(\d+)/ || $1 < 5) {
> +    if (!$kvmver || $kvmver !~ m/^(\d+)\.(\d+)/ || $1 < 6) {
>  	$kvmver //= "undefined";
> -	die "Detected old QEMU binary ('$kvmver', at least 5.0 is required)\n";
> +	die "Detected old QEMU binary ('$kvmver', at least 6.0 is required)\n";
>      }
>  
>      my $machine_type = PVE::QemuServer::Machine::get_vm_machine($conf, $forcemachine, $arch);
> @@ -3960,8 +3960,7 @@ sub config_to_command {
>  	    push @$devices, '-blockdev', $live_restore->{blockdev};
>  	}
>  
> -	my $drive_cmd = print_drive_commandline_full(
> -	    $storecfg, $vmid, $drive, $live_blockdev_name, min_version($kvmver, 6, 0));
> +	my $drive_cmd = print_drive_commandline_full($storecfg, $vmid, $drive, $live_blockdev_name);
>  
>  	# extra protection for templates, but SATA and IDE don't support it..
>  	$drive_cmd .= ',readonly=on' if drive_is_read_only($conf, $drive);
> @@ -4334,9 +4333,7 @@ sub qemu_iothread_del {
>  sub qemu_driveadd {
>      my ($storecfg, $vmid, $device) = @_;
>  
> -    my $kvmver = get_running_qemu_version($vmid);
> -    my $io_uring = min_version($kvmver, 6, 0);
> -    my $drive = print_drive_commandline_full($storecfg, $vmid, $device, undef, $io_uring);
> +    my $drive = print_drive_commandline_full($storecfg, $vmid, $device, undef);
>      $drive =~ s/\\/\\\\/g;
>      my $ret = PVE::QemuServer::Monitor::hmp_cmd($vmid, "drive_add auto \"$drive\"", 60);
>  
> diff --git a/test/cfg2cmd/old-qemu.conf b/test/cfg2cmd/old-qemu.conf
> index e8129cf6..e560cac7 100644
> --- a/test/cfg2cmd/old-qemu.conf
> +++ b/test/cfg2cmd/old-qemu.conf
> @@ -1,4 +1,4 @@
>  # TEST: Test QEMU version detection and expect fail on old version
> -# QEMU_VERSION: 4.0.1
> -# EXPECT_ERROR: Detected old QEMU binary ('4.0.1', at least 5.0 is required)
> +# QEMU_VERSION: 5.0.1
> +# EXPECT_ERROR: Detected old QEMU binary ('5.0.1', at least 6.0 is required)
>  smbios1: uuid=7b10d7af-b932-4c66-b2c3-3996152ec465
> -- 
> 2.39.5
> 
> 
> 
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