[pve-devel] [PATCH qemu-server/pve-manager] notify users about virtio-gl prerequisites

[pve-devel] [PATCH qemu-server/pve-manager] notify users about virtio-gl prerequisites

[Stoiko Ivanov]

These two patches resulted from the feedback of our early adopters in the forum:
https://forum.proxmox.com/threads/.61801/page-3#post-466750

Thomas suggested that it might both make sense to display a note in the GUI,
and exit early in the API/CLI.

Tested on my box (where it works), and a VM without GPU (where it cannot work).

qemu-server:
Stoiko Ivanov (1):
  check prerequisites for virtio-gl display

 PVE/QemuServer.pm | 11 +++++++++++
 1 file changed, 11 insertions(+)

pve-manager:
Stoiko Ivanov (1):
  ui: qemu: show hint about prerequisites for virgl display

 www/manager6/qemu/DisplayEdit.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

-- 
2.30.2

[pve-devel] [PATCH qemu-server 1/1] check prerequisites for virtio-gl display

[Stoiko Ivanov]

and exit early if they are not met.
The necessary libraries were taken from Thomas' post in our community
forum:
https://forum.proxmox.com/threads/.61801/post-466767 (ff)

The /dev/dri/renderD.* check is based on util/drm.c in the current
qemu source code.

Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
---
 PVE/QemuServer.pm | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 8e7cfb8..1290f33 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -1880,6 +1880,17 @@ sub print_vga_device {
 	$pciaddr = print_pci_addr($vgaid, $bridges, $arch, $machine);
     }
 
+    if ($vga->{type} eq 'virtio-gl') {
+	if ( ! -e '/usr/lib/x86_64-linux-gnu/libEGL.so.1' ||
+	    ! -e '/usr/lib/x86_64-linux-gnu/libGL.so.1') {
+	    die "missing libraries for '$vga->{type}' detected (install libgl1 and libegl1)\n";
+	}
+
+	if ( ! PVE::Tools::dir_glob_regex('/dev/dri/', "renderD.*")) {
+	    die "no drm render node detected (/dev/dri/renderD*) - needed for '$vga->{type}' display\n";
+	}
+    }
+
     return "$type,id=${vgaid}${memory}${max_outputs}${pciaddr}${edidoff}";
 }
 
-- 
2.30.2

[pve-devel] applied: [PATCH qemu-server 1/1] check prerequisites for virtio-gl display

[Thomas Lamprecht]

Am 4/29/22 um 18:50 schrieb Stoiko Ivanov:
> and exit early if they are not met.
> The necessary libraries were taken from Thomas' post in our community
> forum:
> https://forum.proxmox.com/threads/.61801/post-466767 (ff)
> 
> The /dev/dri/renderD.* check is based on util/drm.c in the current
> qemu source code.
> 
> Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
> Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
> ---
>  PVE/QemuServer.pm | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
>

applied, but edited message minimally and transformed to post-if while at it, thanks!

[pve-devel] [PATCH manager 1/1] ui: qemu: show hint about prerequisites for virgl display

[Stoiko Ivanov]

since there is no hard dependency on the needed libraries (and we
cannot easily check if a fitting GPU is present in the GUI) - notify
the user about the prerequisites - else the error-messages might be a
bit confusing [0]

Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>

[0] https://forum.proxmox.com/threads/.61801/post-466750

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
---
 www/manager6/qemu/DisplayEdit.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/www/manager6/qemu/DisplayEdit.js b/www/manager6/qemu/DisplayEdit.js
index 9bb1763e..602729d6 100644
--- a/www/manager6/qemu/DisplayEdit.js
+++ b/www/manager6/qemu/DisplayEdit.js
@@ -49,6 +49,13 @@ Ext.define('PVE.qemu.DisplayInputPanel', {
 		    memoryfield.setEmptyText(Proxmox.Utils.defaultText);
 		}
 		memoryfield.setDisabled(disableMemoryField);
+
+		let hintfield = this.up('panel').down('field[name=virglhint]');
+		if (val === 'virtio-gl') {
+		    hintfield.setHidden(false);
+		} else {
+		    hintfield.setHidden(true);
+		}
 	    },
 	},
     },
@@ -60,6 +67,14 @@ Ext.define('PVE.qemu.DisplayInputPanel', {
 	maxValue: 512,
 	step: 4,
 	name: 'memory',
+    },
+    {
+	xtype: 'displayfield',
+	userCls: 'pmx-hint',
+	hidden: true,
+	name: 'virglhint',
+	value: gettext('Note: You need to have a physical GPU in the host and have the necessary ' +
+	    'driver and library packages (libgl1, libegl1) installed'),
     }],
 });
 
-- 
2.30.2