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904 lines
26 KiB
Bash
Executable File
904 lines
26 KiB
Bash
Executable File
#!/bin/bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#
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# Enumerate GPUs (NVIDIA, Intel, AMD) and output JSON for libvirt,
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# including:
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# - PCI metadata (address, vendor/device IDs, driver, pci_class)
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# - IOMMU group
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# - PCI root (for PCIe topology grouping)
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# - NUMA node
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# - SR-IOV VF counts
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# - full_passthrough block (with VM usage)
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# - vGPU (MDEV) instances (fetching profile “name” and “max_instance” from description)
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# - VF (SR-IOV / MIG) instances (with VM usage)
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#
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# Uses `lspci -nnm` for GPU discovery and `virsh` to detect VM attachments.
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# Compatible with Ubuntu (20.04+, 22.04+) and RHEL/CentOS (7/8), Bash ≥4.
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#
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#
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# Sample JSON:
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# {
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# "gpus": [
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# {
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# "pci_address": "00:03.0",
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# "vendor_id": "10de",
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# "device_id": "2484",
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# "vendor": "NVIDIA Corporation",
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# "device": "GeForce RTX 3070",
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# "driver": "nvidia",
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# "pci_class": "VGA compatible controller",
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# "iommu_group": "8",
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# "sriov_totalvfs": 0,
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# "sriov_numvfs": 0,
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# "full_passthrough": {
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# "enabled": true,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x03",
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# "function": "0x0"
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# },
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# "used_by_vm": "win10"
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# },
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# "vgpu_instances": [],
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# "vf_instances": []
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# },
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# {
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# "pci_address": "00:AF.0",
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# "vendor_id": "10de",
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# "device_id": "1EB8",
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# "vendor": "NVIDIA Corporation",
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# "device": "Tesla T4",
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# "driver": "nvidia",
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# "pci_class": "3D controller",
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# "iommu_group": "12",
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# "sriov_totalvfs": 0,
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# "sriov_numvfs": 0,
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# "full_passthrough": {
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# "enabled": false,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0xAF",
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# "function": "0x0"
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# },
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# "used_by_vm": null
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# },
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# "vgpu_instances": [
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# {
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# "mdev_uuid": "a1b2c3d4-5678-4e9a-8b0c-d1e2f3a4b5c6",
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# "profile_name": "grid_t4-16c",
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# "max_instances": 4,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0xAF",
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# "function": "0x0"
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# },
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# "used_by_vm": "vm1"
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# },
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# {
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# "mdev_uuid": "b2c3d4e5-6789-4f0a-9c1d-e2f3a4b5c6d7",
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# "profile_name": "grid_t4-8c",
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# "max_instances": 8,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0xAF",
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# "function": "0x1"
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# },
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# "used_by_vm": "vm2"
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# }
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# ],
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# "vf_instances": []
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# },
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# {
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# "pci_address": "00:65.0",
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# "vendor_id": "10de",
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# "device_id": "20B0",
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# "vendor": "NVIDIA Corporation",
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# "device": "A100-SXM4-40GB",
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# "driver": "nvidia",
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# "pci_class": "VGA compatible controller",
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# "iommu_group": "15",
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# "sriov_totalvfs": 7,
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# "sriov_numvfs": 7,
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# "full_passthrough": {
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# "enabled": false,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x65",
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# "function": "0x0"
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# },
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# "used_by_vm": null
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# },
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# "vgpu_instances": [
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# {
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# "mdev_uuid": "f4a2c8de-1234-4b3a-8c9d-0a1b2c3d4e5f",
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# "profile_name": "grid_a100-8c",
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# "max_instances": 8,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x65",
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# "function": "0x0"
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# },
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# "used_by_vm": null
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# },
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# {
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# "mdev_uuid": "e5b3d9ef-5678-4c2b-9d0e-1b2c3d4e5f6a",
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# "profile_name": "grid_a100-5c",
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# "max_instances": 5,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x65",
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# "function": "0x1"
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# },
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# "used_by_vm": null
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# }
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# ],
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# "vf_instances": [
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# {
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# "vf_pci_address": "65:00.2",
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# "vf_profile": "1g.5gb",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x65",
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# "function": "0x2"
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# },
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# "used_by_vm": "ml"
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# },
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# {
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# "vf_pci_address": "65:00.3",
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# "vf_profile": "2g.10gb",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x65",
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# "function": "0x3"
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# },
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# "used_by_vm": null
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# }
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# ]
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# },
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# {
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# "pci_address": "00:02.0",
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# "vendor_id": "8086",
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# "device_id": "46A6",
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# "vendor": "Intel Corporation",
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# "device": "Alder Lake-P GT2 [Iris Xe Graphics]",
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# "driver": "i915",
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# "pci_class": "VGA compatible controller",
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# "iommu_group": "0",
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# "sriov_totalvfs": 4,
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# "sriov_numvfs": 4,
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# "full_passthrough": {
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# "enabled": false,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x02",
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# "function": "0x0"
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# },
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# "used_by_vm": null
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# },
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# "vgpu_instances": [
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# {
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# "mdev_uuid": "b7c8d9fe-1111-2222-3333-444455556666",
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# "profile_name": "i915-GVTg_V5_4",
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# "max_instances": 4,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x02",
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# "function": "0x0"
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# },
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# "used_by_vm": null
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# },
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# {
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# "mdev_uuid": "c8d9e0af-7777-8888-9999-000011112222",
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# "profile_name": "i915-GVTg_V5_8",
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# "max_instances": 8,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x02",
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# "function": "0x1"
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# },
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# "used_by_vm": null
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# }
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# ],
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# "vf_instances": [
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# {
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# "vf_pci_address": "00:02.1",
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# "vf_profile": "Intel SR-IOV VF 1",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x02",
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# "function": "0x1"
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# },
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# "used_by_vm": "linux01"
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# },
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# {
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# "vf_pci_address": "00:02.2",
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# "vf_profile": "Intel SR-IOV VF 2",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x02",
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# "function": "0x2"
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# },
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# "used_by_vm": null
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# }
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# ]
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# },
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# {
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# "pci_address": "00:03.0",
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# "vendor_id": "1002",
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# "device_id": "7340",
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# "vendor": "AMD",
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# "device": "Instinct MI210",
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# "driver": "amdgpu",
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# "pci_class": "3D controller",
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# "iommu_group": "8",
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# "sriov_totalvfs": 8,
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# "sriov_numvfs": 8,
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# "full_passthrough": {
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# "enabled": false,
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x03",
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# "function": "0x0"
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# },
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# "used_by_vm": null
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# },
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# "vgpu_instances": [],
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# "vf_instances": [
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# {
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# "vf_pci_address": "03:00.1",
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# "vf_profile": "mi210-4c",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x03",
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# "function": "0x1"
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# },
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# "used_by_vm": null
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# },
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# {
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# "vf_pci_address": "03:00.2",
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# "vf_profile": "mi210-2c",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x03",
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# "function": "0x2"
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# },
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# "used_by_vm": null
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# },
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# {
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# "vf_pci_address": "03:00.3",
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# "vf_profile": "mi210-1c",
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# "libvirt_address": {
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# "domain": "0x0000",
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# "bus": "0x00",
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# "slot": "0x03",
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# "function": "0x3"
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# },
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# "used_by_vm": null
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# }
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# ]
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# }
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# ]
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# }
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#
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set -euo pipefail
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# === Utility Functions ===
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# Escape a string for JSON
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json_escape() {
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local str="$1"
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str=${str//\\/\\\\}
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str=${str//\"/\\\"}
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str=${str//
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/\\n}
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str=${str//
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/\\r}
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str=${str// /\\t}
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printf '"%s"' "$str"
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}
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# Cache for nodedev XML data to avoid repeated virsh calls
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declare -A nodedev_cache
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# Cache for nvidia-smi vgpu profile data
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declare -A nvidia_vgpu_profiles
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# Parse nvidia-smi vgpu -s -v output and populate profile cache
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parse_nvidia_vgpu_profiles() {
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local gpu_address=""
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local profile_id=""
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local profile_name=""
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local max_instances=""
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local fb_memory=""
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local max_heads=""
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local max_x_res=""
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local max_y_res=""
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# Function to store current profile data
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store_profile_data() {
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if [[ -n "$gpu_address" && -n "$profile_id" && -n "$profile_name" ]]; then
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local key="${gpu_address}:${profile_id}"
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nvidia_vgpu_profiles["$key"]="$profile_name|${max_instances:-0}|${fb_memory:-0}|${max_heads:-0}|${max_x_res:-0}|${max_y_res:-0}"
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fi
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}
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# Skip if nvidia-smi is not available
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if ! command -v nvidia-smi >/dev/null 2>&1; then
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return
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fi
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while IFS= read -r line; do
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# Match GPU address line
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if [[ $line =~ ^GPU[[:space:]]+([0-9A-Fa-f:]+\.[0-9A-Fa-f]+) ]]; then
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# Store previous profile data before starting new GPU
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store_profile_data
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gpu_address="${BASH_REMATCH[1]}"
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# Convert from format like 00000000:AF:00.0 to AF:00.0 and normalize to lowercase
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if [[ $gpu_address =~ [0-9A-Fa-f]+:([0-9A-Fa-f]+:[0-9A-Fa-f]+\.[0-9A-Fa-f]+) ]]; then
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gpu_address="${BASH_REMATCH[1],,}"
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else
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gpu_address="${gpu_address,,}"
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fi
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# Reset profile variables for new GPU
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profile_id=""
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profile_name=""
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max_instances=""
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fb_memory=""
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max_heads=""
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max_x_res=""
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max_y_res=""
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elif [[ $line =~ ^[[:space:]]*vGPU[[:space:]]+Type[[:space:]]+ID[[:space:]]*:[[:space:]]*0x([0-9A-Fa-f]+) ]]; then
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# Store previous profile data before starting new profile
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store_profile_data
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# Normalize to lowercase hex without 0x prefix
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profile_id="${BASH_REMATCH[1],,}"
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# Reset profile-specific variables
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profile_name=""
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max_instances=""
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fb_memory=""
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max_heads=""
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max_x_res=""
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max_y_res=""
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elif [[ $line =~ ^[[:space:]]*Name[[:space:]]*:[[:space:]]*(.+)$ ]]; then
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profile_name="${BASH_REMATCH[1]}"
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elif [[ $line =~ ^[[:space:]]*Max[[:space:]]+Instances[[:space:]]*:[[:space:]]*([0-9]+) ]]; then
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max_instances="${BASH_REMATCH[1]}"
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elif [[ $line =~ ^[[:space:]]*FB[[:space:]]+Memory[[:space:]]*:[[:space:]]*([0-9]+)[[:space:]]*MiB ]]; then
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fb_memory="${BASH_REMATCH[1]}"
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elif [[ $line =~ ^[[:space:]]*Display[[:space:]]+Heads[[:space:]]*:[[:space:]]*([0-9]+) ]]; then
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max_heads="${BASH_REMATCH[1]}"
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elif [[ $line =~ ^[[:space:]]*Maximum[[:space:]]+X[[:space:]]+Resolution[[:space:]]*:[[:space:]]*([0-9]+) ]]; then
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max_x_res="${BASH_REMATCH[1]}"
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elif [[ $line =~ ^[[:space:]]*Maximum[[:space:]]+Y[[:space:]]+Resolution[[:space:]]*:[[:space:]]*([0-9]+) ]]; then
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max_y_res="${BASH_REMATCH[1]}"
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fi
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done < <(nvidia-smi vgpu -s -v 2>/dev/null || true)
|
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# Store the last profile data after processing all lines
|
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store_profile_data
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}
|
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|
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# Get current vGPU type ID for a VF from sysfs
|
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get_current_vgpu_type() {
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local vf_path="$1"
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local current_type_file="$vf_path/nvidia/current_vgpu_type"
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if [[ -f "$current_type_file" ]]; then
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local type_id
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type_id=$(<"$current_type_file")
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|
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# Remove any whitespace
|
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type_id="${type_id// /}"
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|
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# Handle different input formats and normalize to lowercase hex without 0x
|
||
if [[ $type_id =~ ^0x([0-9A-Fa-f]+)$ ]]; then
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# Input is hex with 0x prefix (e.g., "0x252")
|
||
echo "${BASH_REMATCH[1],,}"
|
||
elif [[ $type_id =~ ^[0-9]+$ ]]; then
|
||
# Input is decimal (e.g., "594")
|
||
printf "%x" "$type_id"
|
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elif [[ $type_id =~ ^[0-9A-Fa-f]+$ ]]; then
|
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# Input is hex without 0x prefix (e.g., "252")
|
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echo "${type_id,,}"
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else
|
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# Fallback for unknown format
|
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echo "0"
|
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fi
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else
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echo "0"
|
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fi
|
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}
|
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|
||
# Get profile information from nvidia-smi cache
|
||
get_nvidia_profile_info() {
|
||
local gpu_address="$1"
|
||
local profile_id="$2"
|
||
local key="${gpu_address}:${profile_id}"
|
||
|
||
if [[ -n "${nvidia_vgpu_profiles[$key]:-}" ]]; then
|
||
echo "${nvidia_vgpu_profiles[$key]}"
|
||
else
|
||
echo "|0|0|0|0|0" # Default empty values
|
||
fi
|
||
}
|
||
|
||
# Get nodedev name for a PCI address (e.g. "00:02.0" -> "pci_0000_00_02_0")
|
||
get_nodedev_name() {
|
||
local addr="$1"
|
||
echo "pci_$(echo "$addr" | sed 's/[:.]/\_/g' | sed 's/^/0000_/')"
|
||
}
|
||
|
||
# Get cached nodedev XML for a PCI address
|
||
get_nodedev_xml() {
|
||
local addr="$1"
|
||
local nodedev_name
|
||
nodedev_name=$(get_nodedev_name "$addr")
|
||
|
||
if [[ -z "${nodedev_cache[$nodedev_name]:-}" ]]; then
|
||
if nodedev_cache[$nodedev_name]=$(virsh nodedev-dumpxml "$nodedev_name" 2>/dev/null); then
|
||
true # Cache populated successfully
|
||
else
|
||
nodedev_cache[$nodedev_name]="" # Cache empty result to avoid retries
|
||
fi
|
||
fi
|
||
|
||
echo "${nodedev_cache[$nodedev_name]}"
|
||
}
|
||
|
||
# Given a PCI address (e.g. "00:02.0"), return its IOMMU group or "null"
|
||
get_iommu_group() {
|
||
local addr="$1"
|
||
local xml
|
||
xml=$(get_nodedev_xml "$addr")
|
||
local group
|
||
group=$(echo "$xml" | xmlstarlet sel -t -v "//iommuGroup/@number" 2>/dev/null || true)
|
||
echo "${group:-null}"
|
||
}
|
||
|
||
# Given a PCI address, output "TOTALVFS NUMVFS"
|
||
get_sriov_counts() {
|
||
local addr="$1"
|
||
local xml
|
||
xml=$(get_nodedev_xml "$addr")
|
||
|
||
local totalvfs=0
|
||
local numvfs=0
|
||
|
||
if [[ -n "$xml" ]]; then
|
||
# Check for SR-IOV capability before parsing
|
||
local cap_xml
|
||
cap_xml=$(echo "$xml" | xmlstarlet sel -t -c "//capability[@type='virt_functions']" 2>/dev/null || true)
|
||
|
||
if [[ -n "$cap_xml" ]]; then
|
||
totalvfs=$(echo "$cap_xml" | xmlstarlet sel -t -v "/capability/@maxCount" 2>/dev/null || true)
|
||
numvfs=$(echo "$cap_xml" | xmlstarlet sel -t -v "count(/capability/address)" 2>/dev/null || true)
|
||
fi
|
||
fi
|
||
|
||
echo "${totalvfs:-0} ${numvfs:-0}"
|
||
}
|
||
|
||
# Given a PCI address, return its NUMA node (or -1 if none)
|
||
get_numa_node() {
|
||
local addr="$1"
|
||
local xml
|
||
xml=$(get_nodedev_xml "$addr")
|
||
local node
|
||
node=$(echo "$xml" | xmlstarlet sel -t -v "//numa/@node" 2>/dev/null || true)
|
||
echo "${node:--1}"
|
||
}
|
||
|
||
# Given a PCI address, return its PCI root (the top‐level bridge ID, e.g. "0000:00:03")
|
||
get_pci_root() {
|
||
local addr="$1"
|
||
local xml
|
||
xml=$(get_nodedev_xml "$addr")
|
||
|
||
if [[ -n "$xml" ]]; then
|
||
# Extract the parent device from XML
|
||
local parent
|
||
parent=$(echo "$xml" | xmlstarlet sel -t -v "/device/parent" 2>/dev/null || true)
|
||
if [[ -n "$parent" ]]; then
|
||
# If parent is a PCI device, recursively find its root
|
||
if [[ $parent =~ ^pci_0000_([0-9A-Fa-f]{2})_([0-9A-Fa-f]{2})_([0-9A-Fa-f])$ ]]; then
|
||
local parent_addr="${BASH_REMATCH[1]}:${BASH_REMATCH[2]}.${BASH_REMATCH[3]}"
|
||
get_pci_root "$parent_addr"
|
||
return
|
||
else
|
||
# Parent is not PCI device, so current device is the root
|
||
echo "0000:$addr"
|
||
return
|
||
fi
|
||
fi
|
||
fi
|
||
|
||
# fallback
|
||
echo "0000:$addr"
|
||
}
|
||
|
||
# Build VM → hostdev maps:
|
||
# pci_to_vm[BDF] = VM name that attaches that BDF
|
||
# mdev_to_vm[UUID] = VM name that attaches that MDEV UUID
|
||
declare -A pci_to_vm mdev_to_vm
|
||
|
||
# Gather all VM names (including inactive)
|
||
mapfile -t VMS < <(virsh list --all --name | grep -v '^$')
|
||
for VM in "${VMS[@]}"; do
|
||
# Skip if dumpxml fails
|
||
if ! xml=$(virsh dumpxml "$VM" 2>/dev/null); then
|
||
continue
|
||
fi
|
||
|
||
# -- PCI hostdevs: use xmlstarlet to extract BDF for all PCI host devices --
|
||
while read -r bus slot func; do
|
||
[[ -n "$bus" && -n "$slot" && -n "$func" ]] || continue
|
||
# Format to match lspci output (e.g., 01:00.0) by padding with zeros
|
||
bus_fmt=$(printf "%02x" "0x$bus")
|
||
slot_fmt=$(printf "%02x" "0x$slot")
|
||
func_fmt=$(printf "%x" "0x$func")
|
||
BDF="$bus_fmt:$slot_fmt.$func_fmt"
|
||
pci_to_vm["$BDF"]="$VM"
|
||
done < <(echo "$xml" | xmlstarlet sel -T -t -m "//hostdev[@type='pci']/source/address" \
|
||
-v "substring-after(@bus, '0x')" -o " " \
|
||
-v "substring-after(@slot, '0x')" -o " " \
|
||
-v "substring-after(@function, '0x')" -n 2>/dev/null || true)
|
||
|
||
# -- MDEV hostdevs: use xmlstarlet to extract UUIDs --
|
||
while IFS= read -r UUID; do
|
||
[[ -n "$UUID" ]] && mdev_to_vm["$UUID"]="$VM"
|
||
done < <(echo "$xml" | xmlstarlet sel -T -t -m "//hostdev[@type='mdev']/source/address" -v "@uuid" -n 2>/dev/null || true)
|
||
done
|
||
|
||
# Helper: convert a VM name to JSON value (quoted string or null)
|
||
to_json_vm() {
|
||
local vm="$1"
|
||
if [[ -z "$vm" ]]; then
|
||
echo "null"
|
||
else
|
||
json_escape "$vm"
|
||
fi
|
||
}
|
||
|
||
# Parse a "description" file for GPU properties and set global variables
|
||
# Expects one argument: the path to the description file
|
||
parse_and_add_gpu_properties() {
|
||
local desc_file="$1"
|
||
# Reset properties to null defaults
|
||
MAX_INSTANCES="null"
|
||
VIDEO_RAM="null"
|
||
MAX_HEADS="null"
|
||
MAX_RESOLUTION_X="null"
|
||
MAX_RESOLUTION_Y="null"
|
||
|
||
if [[ -f "$desc_file" ]]; then
|
||
local desc
|
||
desc=$(<"$desc_file")
|
||
if [[ $desc =~ max_instance=([0-9]+) ]]; then
|
||
MAX_INSTANCES="${BASH_REMATCH[1]}"
|
||
fi
|
||
if [[ $desc =~ framebuffer=([0-9]+)M? ]]; then # Support with or without 'M' suffix
|
||
VIDEO_RAM="${BASH_REMATCH[1]}"
|
||
fi
|
||
if [[ $desc =~ num_heads=([0-9]+) ]]; then
|
||
MAX_HEADS="${BASH_REMATCH[1]}"
|
||
fi
|
||
if [[ $desc =~ max_resolution=([0-9]+)x([0-9]+) ]]; then
|
||
MAX_RESOLUTION_X="${BASH_REMATCH[1]}"
|
||
MAX_RESOLUTION_Y="${BASH_REMATCH[2]}"
|
||
fi
|
||
fi
|
||
}
|
||
|
||
# Finds and formats mdev instances for a given PCI device (PF or VF).
|
||
# Appends JSON strings for each found mdev instance to the global 'vlist' array.
|
||
# Arguments:
|
||
# $1: mdev_base_path (e.g., /sys/bus/pci/devices/.../mdev_supported_types)
|
||
# $2: bdf (e.g., 01:00.0)
|
||
process_mdev_instances() {
|
||
local mdev_base_path="$1"
|
||
local bdf="$2"
|
||
|
||
if [[ ! -d "$mdev_base_path" ]]; then
|
||
return
|
||
fi
|
||
|
||
for PROF_DIR in "$mdev_base_path"/*; do
|
||
[[ -d "$PROF_DIR" ]] || continue
|
||
|
||
local PROFILE_NAME
|
||
if [[ -f "$PROF_DIR/name" ]]; then
|
||
PROFILE_NAME=$(<"$PROF_DIR/name")
|
||
else
|
||
PROFILE_NAME=$(basename "$PROF_DIR")
|
||
fi
|
||
|
||
parse_and_add_gpu_properties "$PROF_DIR/description"
|
||
|
||
local DEVICE_DIR="$PROF_DIR/devices"
|
||
if [[ -d "$DEVICE_DIR" ]]; then
|
||
for UDIR in "$DEVICE_DIR"/*; do
|
||
[[ -d "$UDIR" ]] || continue
|
||
local MDEV_UUID
|
||
MDEV_UUID=$(basename "$UDIR")
|
||
|
||
local DOMAIN="0x0000"
|
||
local BUS="0x${bdf:0:2}"
|
||
local SLOT="0x${bdf:3:2}"
|
||
local FUNC="0x${bdf:6:1}"
|
||
|
||
local raw
|
||
raw="${mdev_to_vm[$MDEV_UUID]:-}"
|
||
local USED_JSON
|
||
USED_JSON=$(to_json_vm "$raw")
|
||
|
||
vlist+=(
|
||
"{\"mdev_uuid\":\"$MDEV_UUID\",\"profile_name\":$(json_escape "$PROFILE_NAME"),\"max_instances\":$MAX_INSTANCES,\"video_ram\":$VIDEO_RAM,\"max_heads\":$MAX_HEADS,\"max_resolution_x\":$MAX_RESOLUTION_X,\"max_resolution_y\":$MAX_RESOLUTION_Y,\"libvirt_address\":{\"domain\":\"$DOMAIN\",\"bus\":\"$BUS\",\"slot\":\"$SLOT\",\"function\":\"$FUNC\"},\"used_by_vm\":$USED_JSON}")
|
||
done
|
||
fi
|
||
done
|
||
}
|
||
|
||
# === GPU Discovery ===
|
||
|
||
# Parse nvidia-smi vgpu profiles once at the beginning
|
||
parse_nvidia_vgpu_profiles
|
||
|
||
mapfile -t LINES < <(lspci -nnm)
|
||
|
||
echo '{ "gpus": ['
|
||
|
||
first_gpu=true
|
||
for LINE in "${LINES[@]}"; do
|
||
# Parse lspci -nnm fields: SLOT "CLASS [CODE]" "VENDOR [VID]" "DEVICE [DID]" ...
|
||
if [[ $LINE =~ ^([^[:space:]]+)[[:space:]]\"([^\"]+)\"[[:space:]]\"([^\"]+)\"[[:space:]]\"([^\"]+)\" ]]; then
|
||
PCI_ADDR="${BASH_REMATCH[1],,}" # Normalize to lowercase
|
||
PCI_CLASS="${BASH_REMATCH[2]}"
|
||
VENDOR_FIELD="${BASH_REMATCH[3]}"
|
||
DEVICE_FIELD="${BASH_REMATCH[4]}"
|
||
else
|
||
continue
|
||
fi
|
||
|
||
# If this is a VF, skip it. It will be processed under its PF.
|
||
if [[ -e "/sys/bus/pci/devices/0000:$PCI_ADDR/physfn" ]]; then
|
||
continue
|
||
fi
|
||
|
||
# Only process GPU classes (3D controller)
|
||
if [[ ! "$PCI_CLASS" =~ (3D\ controller) ]]; then
|
||
continue
|
||
fi
|
||
|
||
# Extract vendor name and ID
|
||
VENDOR=$(sed -E 's/ \[[0-9A-Fa-f]{4}\]$//' <<<"$VENDOR_FIELD")
|
||
VENDOR_ID=$(sed -E 's/.*\[([0-9A-Fa-f]{4})\]$/\1/' <<<"$VENDOR_FIELD")
|
||
# Extract device name and ID
|
||
DEVICE=$(sed -E 's/ \[[0-9A-Fa-f]{4}\]$//' <<<"$DEVICE_FIELD")
|
||
DEVICE_ID=$(sed -E 's/.*\[([0-9A-Fa-f]{4})\]$/\1/' <<<"$DEVICE_FIELD")
|
||
|
||
# Kernel driver
|
||
DRV_PATH="/sys/bus/pci/devices/0000:$PCI_ADDR/driver"
|
||
if [[ -L $DRV_PATH ]]; then
|
||
DRIVER=$(basename "$(readlink "$DRV_PATH")")
|
||
else
|
||
DRIVER="unknown"
|
||
fi
|
||
|
||
# IOMMU group
|
||
IOMMU=$(get_iommu_group "$PCI_ADDR")
|
||
|
||
# PCI root (to group GPUs under same PCIe switch/root complex)
|
||
PCI_ROOT=$(get_pci_root "$PCI_ADDR")
|
||
|
||
# NUMA node
|
||
NUMA_NODE=$(get_numa_node "$PCI_ADDR")
|
||
|
||
# SR-IOV counts
|
||
read -r TOTALVFS NUMVFS < <(get_sriov_counts "$PCI_ADDR")
|
||
|
||
# Get Physical GPU properties from its own description file, if available
|
||
PF_DESC_PATH="/sys/bus/pci/devices/0000:$PCI_ADDR/description"
|
||
parse_and_add_gpu_properties "$PF_DESC_PATH"
|
||
# Save physical function's properties before they are overwritten by vGPU/VF processing
|
||
PF_MAX_INSTANCES=$MAX_INSTANCES
|
||
PF_VIDEO_RAM=$VIDEO_RAM
|
||
PF_MAX_HEADS=$MAX_HEADS
|
||
PF_MAX_RESOLUTION_X=$MAX_RESOLUTION_X
|
||
PF_MAX_RESOLUTION_Y=$MAX_RESOLUTION_Y
|
||
|
||
# === full_passthrough usage ===
|
||
raw="${pci_to_vm[$PCI_ADDR]:-}"
|
||
FULL_USED_JSON=$(to_json_vm "$raw")
|
||
|
||
# === vGPU (MDEV) instances ===
|
||
VGPU_ARRAY="[]"
|
||
declare -a vlist=()
|
||
# Process mdev on the Physical Function
|
||
MDEV_BASE="/sys/bus/pci/devices/0000:$PCI_ADDR/mdev_supported_types"
|
||
process_mdev_instances "$MDEV_BASE" "$PCI_ADDR"
|
||
|
||
# === VF instances (SR-IOV / MIG) ===
|
||
VF_ARRAY="[]"
|
||
declare -a flist=()
|
||
if ((TOTALVFS > 0)); then
|
||
for VF_LINK in /sys/bus/pci/devices/0000:"$PCI_ADDR"/virtfn*; do
|
||
[[ -L $VF_LINK ]] || continue
|
||
VF_PATH=$(readlink -f "$VF_LINK")
|
||
VF_ADDR=${VF_PATH##*/} # e.g. "0000:65:00.2"
|
||
VF_BDF="${VF_ADDR:5}" # "65:00.2"
|
||
|
||
# For NVIDIA SR-IOV, check for vGPU (mdev) on the VF itself
|
||
if [[ "$VENDOR_ID" == "10de" ]]; then
|
||
VF_MDEV_BASE="$VF_PATH/mdev_supported_types"
|
||
process_mdev_instances "$VF_MDEV_BASE" "$VF_BDF"
|
||
fi
|
||
|
||
DOMAIN="0x0000"
|
||
BUS="0x${VF_BDF:0:2}"
|
||
SLOT="0x${VF_BDF:3:2}"
|
||
FUNC="0x${VF_BDF:6:1}"
|
||
|
||
# Determine vf_profile using nvidia-smi information
|
||
VF_PROFILE=""
|
||
VF_PROFILE_NAME=""
|
||
VF_MAX_INSTANCES="null"
|
||
VF_VIDEO_RAM="null"
|
||
VF_MAX_HEADS="null"
|
||
VF_MAX_RESOLUTION_X="null"
|
||
VF_MAX_RESOLUTION_Y="null"
|
||
|
||
if [[ "$VENDOR_ID" == "10de" ]]; then
|
||
# For NVIDIA GPUs, check current vGPU type
|
||
current_vgpu_type=$(get_current_vgpu_type "$VF_PATH")
|
||
if [[ "$current_vgpu_type" != "0" ]]; then
|
||
# Get profile info from nvidia-smi cache
|
||
profile_info=$(get_nvidia_profile_info "$PCI_ADDR" "$current_vgpu_type")
|
||
IFS='|' read -r VF_PROFILE_NAME VF_MAX_INSTANCES VF_VIDEO_RAM VF_MAX_HEADS VF_MAX_RESOLUTION_X VF_MAX_RESOLUTION_Y <<< "$profile_info"
|
||
VF_PROFILE="$VF_PROFILE_NAME"
|
||
fi
|
||
fi
|
||
|
||
# Fallback to lspci parsing if no nvidia-smi profile found
|
||
if [[ -z "$VF_PROFILE" ]]; then
|
||
if VF_LINE=$(lspci -nnm -s "$VF_BDF" 2>/dev/null); then
|
||
if [[ $VF_LINE =~ \"([^\"]+)\"[[:space:]]\"([^\"]+)\"[[:space:]]\"([^\"]+)\"[[:space:]]\"([^\"]+)\" ]]; then
|
||
VF_DEVICE_FIELD="${BASH_REMATCH[4]}"
|
||
VF_PROFILE=$(sed -E 's/ \[[0-9A-Fa-f]{4}\]$//' <<<"$VF_DEVICE_FIELD")
|
||
fi
|
||
fi
|
||
fi
|
||
VF_PROFILE_JSON=$(json_escape "$VF_PROFILE")
|
||
|
||
# Determine which VM uses this VF_BDF
|
||
raw="${pci_to_vm[$VF_BDF]:-}"
|
||
USED_JSON=$(to_json_vm "$raw")
|
||
|
||
flist+=(
|
||
"{\"vf_pci_address\":\"$VF_BDF\",\"vf_profile\":$VF_PROFILE_JSON,\"max_instances\":$VF_MAX_INSTANCES,\"video_ram\":$VF_VIDEO_RAM,\"max_heads\":$VF_MAX_HEADS,\"max_resolution_x\":$VF_MAX_RESOLUTION_X,\"max_resolution_y\":$VF_MAX_RESOLUTION_Y,\"libvirt_address\":{\"domain\":\"$DOMAIN\",\"bus\":\"$BUS\",\"slot\":\"$SLOT\",\"function\":\"$FUNC\"},\"used_by_vm\":$USED_JSON}")
|
||
done
|
||
if [ ${#flist[@]} -gt 0 ]; then
|
||
VF_ARRAY="[$(
|
||
IFS=,
|
||
echo "${flist[*]}"
|
||
)]"
|
||
fi
|
||
fi
|
||
|
||
# Consolidate all vGPU instances (from PF and VFs)
|
||
if [ ${#vlist[@]} -gt 0 ]; then
|
||
VGPU_ARRAY="[$(
|
||
IFS=,
|
||
echo "${vlist[*]}"
|
||
)]"
|
||
fi
|
||
|
||
# === full_passthrough block ===
|
||
# If vgpu_instances and vf_instances are empty, we can assume full passthrough
|
||
FP_ENABLED=0
|
||
if [[ ${#vlist[@]} -eq 0 && ${#flist[@]} -eq 0 ]]; then
|
||
FP_ENABLED=1
|
||
fi
|
||
DOMAIN="0x0000"
|
||
BUS="0x${PCI_ADDR:0:2}"
|
||
SLOT="0x${PCI_ADDR:3:2}"
|
||
FUNC="0x${PCI_ADDR:6:1}"
|
||
|
||
# Emit JSON
|
||
if $first_gpu; then
|
||
first_gpu=false
|
||
else
|
||
echo ","
|
||
fi
|
||
|
||
cat <<JSON
|
||
{
|
||
"pci_address":$(json_escape "$PCI_ADDR"),
|
||
"vendor_id":$(json_escape "$VENDOR_ID"),
|
||
"device_id":$(json_escape "$DEVICE_ID"),
|
||
"vendor":$(json_escape "$VENDOR"),
|
||
"device":$(json_escape "$DEVICE"),
|
||
"driver":$(json_escape "$DRIVER"),
|
||
"pci_class":$(json_escape "$PCI_CLASS"),
|
||
"iommu_group":$(json_escape "$IOMMU"),
|
||
"pci_root":$(json_escape "$PCI_ROOT"),
|
||
"numa_node":$NUMA_NODE,
|
||
"sriov_totalvfs":$TOTALVFS,
|
||
"sriov_numvfs":$NUMVFS,
|
||
"max_instances":$PF_MAX_INSTANCES,
|
||
"video_ram":$PF_VIDEO_RAM,
|
||
"max_heads":$PF_MAX_HEADS,
|
||
"max_resolution_x":$PF_MAX_RESOLUTION_X,
|
||
"max_resolution_y":$PF_MAX_RESOLUTION_Y,
|
||
|
||
"full_passthrough": {
|
||
"enabled":$FP_ENABLED,
|
||
"libvirt_address": {
|
||
"domain":$(json_escape "$DOMAIN"),
|
||
"bus":$(json_escape "$BUS"),
|
||
"slot":$(json_escape "$SLOT"),
|
||
"function":$(json_escape "$FUNC")
|
||
},
|
||
"used_by_vm":$FULL_USED_JSON
|
||
},
|
||
|
||
"vgpu_instances":$VGPU_ARRAY,
|
||
"vf_instances":$VF_ARRAY
|
||
}
|
||
JSON
|
||
|
||
done
|
||
|
||
echo ""
|
||
echo "]}"
|