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Take populated disks into consideration when calculating PCI device ID

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This commit is contained in:
Patrik Olsson 2026-02-05 15:10:57 +01:00
parent 66db267e27
commit fe2014854e
1 changed files with 19 additions and 2 deletions
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21
gns3server/compute/qemu/qemu_vm.py
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@ -2190,14 +2190,31 @@ class QemuVM(BaseNode):
patched_qemu = True
# Each 32 PCI device we need to add a PCI bridge with max 9 bridges
pci_devices = 4 + len(self._ethernet_adapters) # 4 PCI devices are use by default by qemu
# Count PCI devices: 4 default + disks (virtio/sata/nvme/scsi) + network adapters
pci_disk_devices = 0
for drive in ["a", "b", "c", "d"]:
# config disk replaces hdd when enabled
if drive == "d" and self._create_config_disk:
continue
if getattr(self, "_hd{}_disk_image".format(drive)):
interface = getattr(self, "_hd{}_disk_interface".format(drive))
# virtio, sata, nvme, and scsi each consume 1 PCI slot; ide and none don't
if interface not in ("none", "ide"):
pci_disk_devices += 1
# config disk (replaces hdd) also consumes a PCI slot if created
if self._create_config_disk and self.config_disk_image:
interface = self.hdd_disk_interface if self.hdd_disk_interface != "none" else self.hda_disk_interface
if interface not in ("none", "ide"):
pci_disk_devices += 1
pci_devices = 4 + pci_disk_devices + len(self._ethernet_adapters)
pci_bridges = math.floor(pci_devices / 32)
pci_bridges_created = 0
if pci_bridges >= 1:
if self._qemu_version and parse_version(self._qemu_version) < parse_version("2.4.0"):
raise QemuError("Qemu version 2.4 or later is required to run this VM with a large number of network adapters")
pci_device_id = 4 + pci_bridges # Bridge consume PCI ports
pci_device_id = 4 + pci_bridges + pci_disk_devices # Bridges and disks consume PCI ports
for adapter_number, adapter in enumerate(self._ethernet_adapters):
mac = int_to_macaddress(macaddress_to_int(self._mac_address) + adapter_number)