Bug 1908633
| Summary: | [virtual network] Hot unplug rtl8139 nic issues on q35 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | Lei Yang <leiyang> |
| Component: | qemu-kvm | Assignee: | ybendito |
| qemu-kvm sub component: | Networking | QA Contact: | Lei Yang <leiyang> |
| Status: | CLOSED CURRENTRELEASE | Docs Contact: | |
| Severity: | medium | ||
| Priority: | medium | CC: | ailan, chayang, jinzhao, juzhang, mdean, virt-maint, ybendito, yvugenfi |
| Version: | unspecified | Keywords: | Regression, Triaged |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-02-21 18:19:17 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1744438 | ||
I think the problem happens due to the fact that rtl8139 is not a PCIe device. So the first question is whether RHEL should support hot plugging/unplugging of rtl8139 on q35. Note that when/if qemu will include ACPI support for hot plug/unplug this problem will be solved. Hit same issue when run the win10 guest on rhel8.5-av host. Test Version: qemu-kvm-6.0.0-16.module+el8.5.0+10848+2dccc46d.x86_64 kernel-4.18.0-305.3.el8.x86_64 virtio-win-prewhql-0.1-198.iso Hit same issue when run the win2019 guest on rhel8.5-av host. Test Version: qemu-kvm-6.0.0-27.module+el8.5.0+12121+c40c8708.x86_64 kernel-4.18.0-328.el8.x86_64 virtio-win-prewhql-0.1-203.iso Bulk update: Move RHEL-AV bugs to RHEL9. If necessary to resolve in RHEL8, then clone to the current RHEL8 release. Hit same issue when run the win2019 guest on rhel9.0.0 host. Test Version: kernel-5.14.0-39.el9.x86_64 qemu-kvm-6.2.0-1.el9.x86_64 virtio-win-prewhql-0.1-215.iso |
Description of problem: Can not get a valid ip after hot plug/unplug rtl8139 nic on q35 machines. And when hot unplug the device, it will not disappear from the device manager, useing "scan for hardware changes", the device will disappear normally. Version-Release number of selected component (if applicable): qemu-kvm-5.2.0-1.module+el8.4.0+9091+650b220a.x86_64 kernel-4.18.0-262.el8.x86_64 virtio-win-prewhql-0.1-191.iso How reproducible: 100% Steps to Reproduce: 1.Boot a guest /usr/libexec/qemu-kvm \ -name 'avocado-vt-vm1' \ -sandbox on \ -machine q35 \ -device pcie-root-port,id=pcie-root-port-0,multifunction=on,bus=pcie.0,addr=0x1,chassis=1 \ -device pcie-pci-bridge,id=pcie-pci-bridge-0,addr=0x0,bus=pcie-root-port-0 \ -nodefaults \ -device VGA,bus=pcie.0,addr=0x2 \ -m 62464 \ -smp 16,maxcpus=16,cores=8,threads=1,dies=1,sockets=2 \ -cpu 'EPYC',hv_stimer,hv_synic,hv_vpindex,hv_relaxed,hv_spinlocks=0xfff,hv_vapic,hv_time,hv_frequencies,hv_runtime,hv_tlbflush,hv_reenlightenment,hv_stimer_direct,hv_ipi,+kvm_pv_unhalt \ -device pcie-root-port,id=pcie-root-port-1,port=0x1,addr=0x1.0x1,bus=pcie.0,chassis=2 \ -device qemu-xhci,id=usb1,bus=pcie-root-port-1,addr=0x0 \ -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \ -device pcie-root-port,id=pcie-root-port-2,port=0x2,addr=0x1.0x2,bus=pcie.0,chassis=3 \ -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie-root-port-2,addr=0x0 \ -blockdev node-name=file_image1,driver=file,auto-read-only=on,discard=unmap,aio=threads,filename=/home/kvm_autotest_root/images/win10-64-virtio-scsi.qcow2,cache.direct=on,cache.no-flush=off \ -blockdev node-name=drive_image1,driver=qcow2,read-only=off,cache.direct=on,cache.no-flush=off,file=file_image1 \ -device scsi-hd,id=image1,drive=drive_image1,write-cache=on \ -device pcie-root-port,id=pcie-root-port-3,port=0x3,addr=0x1.0x3,bus=pcie.0,chassis=4 \ -device rtl8139,mac=9a:45:3a:24:29:0a,id=id3hq3Te,netdev=idvc6ke6,bus=pcie-root-port-3,addr=0x0 \ -netdev tap,id=idvc6ke6 \ -blockdev node-name=file_cd1,driver=file,auto-read-only=on,discard=unmap,aio=threads,filename=/home/kvm_autotest_root/iso/windows/winutils.iso,cache.direct=on,cache.no-flush=off \ -blockdev node-name=drive_cd1,driver=raw,read-only=on,cache.direct=on,cache.no-flush=off,file=file_cd1 \ -device scsi-cd,id=cd1,drive=drive_cd1,write-cache=on \ -vnc :0 \ -rtc base=localtime,clock=host,driftfix=slew \ -boot menu=off,order=cdn,once=c,strict=off \ -enable-kvm \ -device pcie-root-port,id=pcie_extra_root_port_0,multifunction=on,bus=pcie.0,addr=0x3,chassis=5 \ -monitor stdio \ -qmp tcp:0:5555,server,nowait \ 2.Hot unplug device {'execute': 'device_del', 'arguments': {'id': 'id3hq3Te'}} {'execute': 'netdev_del', 'arguments': {'id': 'idvc6ke6'}} 3.Check the device status, it does not disappear from the device manager. Actual results: Hot unplug rtl8139 nic, it does not disappear from the device manager. Expected results: After hot unplug device,it will disappear from the device manager Additional info: RHEL guest works well,