[pve-devel] [PATCH v5 qemu-server 4/4] fix #4957: add vendor and product information passthrough for SCSI-Disks

[Hannes Duerr]

adds vendor and product information for SCSI devices to the json schema and
checks in the VM create/update API call if it is possible to add these to QEMU as a device option

Signed-off-by: Hannes Duerr <h.duerr at proxmox.com>
---
 PVE/API2/Qemu.pm        | 39 +++++++++++++++++++++++++++++++++++++++
 PVE/QemuServer.pm       | 13 ++++++++++++-
 PVE/QemuServer/Drive.pm | 24 ++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 1 deletion(-)

diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index b9c8f20..75c7161 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -696,6 +696,33 @@ my $check_vm_modify_config_perm = sub {
     return 1;
 };
 
+sub assert_scsi_feature_compatibility {
+    my ($opt, $conf, $storecfg, $drive_attributes) = @_;
+
+    my $drive = PVE::QemuServer::Drive::parse_drive($opt, $drive_attributes);
+
+    my $machine_type = PVE::QemuServer::get_vm_machine($conf, undef, $conf->{arch});
+    my $machine_version = PVE::QemuServer::extract_version(
+	$machine_type, PVE::QemuServer::kvm_user_version());
+    my $drivetype = PVE::QemuServer::Drive::get_scsi_devicetype(
+	$drive, $storecfg, $machine_version);
+
+    if ($drivetype ne 'hd' && $drivetype ne 'cd') {
+	if ($drive->{product}) {
+	    raise_param_exc({
+		product => "Passing of product information is only supported for".
+		"'scsi-hd' and 'scsi-cd' devices (e.g. not pass-through)."
+	    });
+	}
+	if ($drive->{vendor}) {
+	    raise_param_exc({
+		vendor => "Passing of vendor information is only supported for".
+		"'scsi-hd' and 'scsi-cd' devices (e.g. not pass-through)."
+	    });
+	}
+    }
+}
+
 __PACKAGE__->register_method({
     name => 'vmlist',
     path => '',
@@ -1011,6 +1038,13 @@ __PACKAGE__->register_method({
 		my $conf = $param;
 		my $arch = PVE::QemuServer::get_vm_arch($conf);
 
+		for my $opt (sort keys $param->%*) {
+		    if ($opt =~ m/^scsi(\d)+$/) {
+			assert_scsi_feature_compatibility(
+			    $opt, $conf, $storecfg, $param->{$opt});
+		    }
+		}
+
 		$conf->{meta} = PVE::QemuServer::new_meta_info_string();
 
 		my $vollist = [];
@@ -1826,6 +1860,11 @@ my $update_vm_api  = sub {
 		    PVE::QemuServer::vmconfig_register_unused_drive($storecfg, $vmid, $conf, PVE::QemuServer::parse_drive($opt, $conf->{pending}->{$opt}))
 			if defined($conf->{pending}->{$opt});
 
+		    if ($opt =~ m/^scsi(\d)+$/) {
+			assert_scsi_feature_compatibility(
+			    $opt, $conf, $storecfg, $param->{$opt});
+		    }
+
 		    my (undef, $created_opts) = $create_disks->(
 			$rpcenv,
 			$authuser,
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 6090f91..4fbb9b2 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -1210,7 +1210,8 @@ sub kvm_user_version {
     return $kvm_user_version->{$binary};
 
 }
-my sub extract_version {
+
+our sub extract_version {
     my ($machine_type, $version) = @_;
     $version = kvm_user_version() if !defined($version);
     return PVE::QemuServer::Machine::extract_version($machine_type, $version)
@@ -1404,6 +1405,16 @@ sub print_drivedevice_full {
 	}
 	$device .= ",wwn=$drive->{wwn}" if $drive->{wwn};
 
+	# only scsi-hd and scsi-cd support passing vendor and product information
+	if ($devicetype eq 'hd' || $devicetype eq 'cd') {
+	    if (my $vendor = $drive->{vendor}) {
+		$device .= ",vendor=$vendor";
+	    }
+	    if (my $product = $drive->{product}) {
+		$device .= ",product=$product";
+	    }
+	}
+
     } elsif ($drive->{interface} eq 'ide' || $drive->{interface} eq 'sata') {
 	my $maxdev = ($drive->{interface} eq 'sata') ? $PVE::QemuServer::Drive::MAX_SATA_DISKS : 2;
 	my $controller = int($drive->{index} / $maxdev);
diff --git a/PVE/QemuServer/Drive.pm b/PVE/QemuServer/Drive.pm
index de62d43..4e1646d 100644
--- a/PVE/QemuServer/Drive.pm
+++ b/PVE/QemuServer/Drive.pm
@@ -161,6 +161,26 @@ my %iothread_fmt = ( iothread => {
 	optional => 1,
 });
 
+my %product_fmt = (
+    product => {
+	type => 'string',
+	pattern => '[A-Za-z0-9\-_]{,40}',
+	format_description => 'product',
+	description => "The drive's product name, up to 40 bytes long.",
+	optional => 1,
+    },
+);
+
+my %vendor_fmt = (
+    vendor => {
+	type => 'string',
+	pattern => '[A-Za-z0-9\-_]{,40}',
+	format_description => 'vendor',
+	description => "The drive's vendor name, up to 40 bytes long.",
+	optional => 1,
+    },
+);
+
 my %model_fmt = (
     model => {
 	type => 'string',
@@ -278,10 +298,12 @@ PVE::JSONSchema::register_standard_option("pve-qm-ide", $idedesc);
 my $scsi_fmt = {
     %drivedesc_base,
     %iothread_fmt,
+    %product_fmt,
     %queues_fmt,
     %readonly_fmt,
     %scsiblock_fmt,
     %ssd_fmt,
+    %vendor_fmt,
     %wwn_fmt,
 };
 my $scsidesc = {
@@ -402,10 +424,12 @@ my $alldrive_fmt = {
     %drivedesc_base,
     %iothread_fmt,
     %model_fmt,
+    %product_fmt,
     %queues_fmt,
     %readonly_fmt,
     %scsiblock_fmt,
     %ssd_fmt,
+    %vendor_fmt,
     %wwn_fmt,
     %tpmversion_fmt,
     %efitype_fmt,
-- 
2.39.2