Bug 643326
| Summary: | Can't hot remove NIC card for window guests if issue command "host_net_remove" earlier than command "pci_del" | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | juzhang <juzhang> |
| Component: | kvm | Assignee: | Alex Williamson <alex.williamson> |
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 5.6 | CC: | alex.williamson, michen, mkenneth, mst, virt-maint, vrozenfe, ykaul |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-13 17:18:46 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: | 580946 | ||
There's an ordering requirement that's not enforced by the qemu command line. If you can reproduce this with libvirt, using virt-manager or virsh to do the device remove, re-open. |
Description of problem: I tried to hot remove the pci device (NIC card) using the following commands: 1.(qemu) info network VLAN 0 devices: tap.0: ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown virtio.0: model=virtio,macaddr=22:11:22:45:66:83 2. (qemu) host_net_remove 0 tap.0 3.(qemu) pci_del pci_addr=3 4.(qemu) info network VLAN 0 devices: virtio.0: model=virtio,macaddr=22:11:22:45:66:83 5.(qemu) info pci .............. Bus 0, device 3, function 0: Ethernet controller: PCI device 1af4:1000 IRQ 11. BAR0: I/O at 0xc040 [0xc05f]. It's failed. Version-Release number of selected component (if applicable): #rpm -qa | grep kvm kvm-qemu-img-83-204.el5 kvm-debuginfo-83-204.el5 etherboot-roms-kvm-5.4.4-13.el5 kvm-tools-83-204.el5 kmod-kvm-83-204.el5 etherboot-zroms-kvm-5.4.4-13.el5 kvm-83-204.el5 How reproducible: Steps to Reproduce: 1.boot 2008 r2 guest. #/usr/libexec/qemu-kvm -no-hpet -usbdevice tablet -rtc-td-hack -m 2G -smp 2 -drive file=/root/zhangjunyi/win2008-r2-virtio.qcow2,if=virtio,boot=on,werror=stop -drive file=/root/zhangjunyi/mnt/win2008/Windows_Server_2008_R2_GA_EN.iso,media=cdrom -fda /usr/share/virtio-win/virtio-drivers-1.0.0-45801-1.0.0.vfd -net nic,vlan=0,macaddr=22:11:22:45:66:83,model=virtio -net tap,vlan=0,script=/etc/qemu-ifup -uuid `uuidgen` -cpu qemu64,+sse2 -balloon none -boot d -monitor stdio -vnc :10 -notify all 2.Issue the following commands 2.1.(qemu) info network VLAN 0 devices: tap.0: ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown virtio.0: model=virtio,macaddr=22:11:22:45:66:83 2.2 (qemu) host_net_remove 0 tap.0 2.3(qemu) pci_del pci_addr=3 2.4(qemu) info network VLAN 0 devices: virtio.0: model=virtio,macaddr=22:11:22:45:66:83 2.5(qemu) info pci .............. Bus 0, device 3, function 0: Ethernet controller: PCI device 1af4:1000 IRQ 11. BAR0: I/O at 0xc040 [0xc05f]. Actual results: The NIC card can not be removed from guest. Expected results: The NIC card can be removed successfully. Additional info: 1. If issue command pci_del pci_addr=3 earlier than command "host_net_remove",The NIC card can be removed successfully. 1.1(qemu) info network VLAN 0 devices: tap.0: ifname=tap0,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown virtio.0: model=virtio,macaddr=22:11:22:45:66:83 1.2 (qemu) pci_del pci_addr=3 1.3 (qemu) host_net_remove 0 tap.0 /etc/qemu-ifdown: could not launch network script 1.4 (qemu) info network VLAN 0 devices: 1.5 (qemu) info pci (function 3 was removed) Bus 0, device 0, function 0: Host bridge: PCI device 8086:1237 Bus 0, device 1, function 0: ISA bridge: PCI device 8086:7000 Bus 0, device 1, function 1: IDE controller: PCI device 8086:7010 BAR4: I/O at 0xc000 [0xc00f]. Bus 0, device 1, function 2: USB controller: PCI device 8086:7020 IRQ 10. BAR4: I/O at 0xc020 [0xc03f]. Bus 0, device 1, function 3: Bridge: PCI device 8086:7113 IRQ 9. Bus 0, device 2, function 0: VGA controller: PCI device 1013:00b8 BAR0: 32 bit memory at 0xc2000000 [0xc3ffffff]. BAR1: 32 bit memory at 0xc4000000 [0xc4000fff]. Bus 0, device 4, function 0: SCSI controller: PCI device 1af4:1001 IRQ 10. BAR0: I/O at 0xc080 [0xc0bf]. 2.I also tested rhel6. The NIC card can be removed successfully.now matter which command is issue first.