Red Hat Bugzilla – Bug 1269738
Vlan table display repeat four times in qmp when queues=4
Last modified: 2016-11-03 16:06:03 EDT
Description of problem: Check vlan table in rx-filter information when guest starts for qmp when queues=4; Vlan table display repeat four times; if queues=2,Vlan table display repeat two times; if queues=1,Vlan table display one times. Version-Release number of selected component (if applicable): 3.10.0-319.el7.x86_64 qemu-kvm-1.5.3-104.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.launch a guest with ctrl_vlan=off -netdev tap,id=hostnet0,vhost=on,queues=2 \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:55:66:77:80:8d,bus=pci.0,addr=0x3,mq=on,mrg_rxbuf=on,ctrl_vlan=off 2.Check vlan table in rx-filter information when guest starts. telnet 10.66.106.66 4567 {"execute":"qmp_capabilities"} { "execute": "query-rx-filter", "arguments": { "name": "net0" } } Actual results: Vlan table display repeat four times Expected results: Vlan table display only one time Additional info: please look attachment about display command: /usr/libexec/qemu-kvm -name BRIDGE -S -machine pc,accel=kvm,usb=off \ -cpu Opteron_G5 -m 4G -realtime mlock=off \ -smp 4 -uuid fbf56917-5866-48f2-b3fb-5ce2ad294d93 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/rhel7cp1.0.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control \ -rtc base=utc,driftfix=slew \ -global kvm-pit.lost_tick_policy=discard \ -no-hpet -no-shutdown \ -global PIIX4_PM.disable_s3=1 \ -global PIIX4_PM.disable_s4=1 \ -boot menu=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 \ -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 \ -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 \ -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 \ -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 \ -drive file=/mnt/rhel712,snapshot=on,cache=none,if=none,id=drive-virtio-disk0,format=qcow2 \ -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \ -netdev tap,id=hostnet0,vhost=on,queues=4 \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:55:66:77:80:8d,bus=pci.0,addr=0x3,vectors=10,mq=on,mrg_rxbuf=on,ctrl_vlan=off \ -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 \ -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/rhel7cp1.0.org.qemu.guest_agent.0,server,nowait \ -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -chardev spicevmc,id=charchannel1,name=vdagent \ -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=com.redhat.spice.0 \ -device usb-tablet,id=input0 \ -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 \ -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 \ -chardev spicevmc,id=charredir1,name=usbredir \ -device usb-redir,chardev=charredir1,id=redir1 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x8 \ -msg timestamp=on -monitor stdio \ -qmp tcp:0:4567,server,nowait \ -vnc 0.0.0.0:3 windows2008r2 guests and linux guest all has this issue
Created attachment 1080860 [details] qmp display
qemu-kvm-rhev-2.3.0-23.el7.x86_64 has no this issue
It isn't just the vlan table, although it is the mostly obvious one (particularly in rhel7 qemu-kvm package). All of the device filtering data is duplicated including all the mac address filters and promisc settings. It is actually possible to reproduce this in upstream as well as qemu-kvm-rhev. If the qmp command is given without a network name argument, then in a multiqueue configuration, the same output is given multiple times (once for each queue). Will clone to qemu-kvm-rhev. -vlad
Fix included in qemu-kvm-1.5.3-108.el7
Reproduce this bug with below version: qemu-kvm-1.5.3-105.el7.x86_64 3.10.0-378.el7.x86_64 Test steps: 1.launch a guest with ctrl_vlan=off -netdev tap,id=hostnet0,vhost=on,queues=4 \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=32:d7:63:b5:a9:54,bus=pci.0,addr=0x3,mq=on,mrg_rxbuf=on,ctrl_vlan=off,vectors=10 2.Check vlan table in rx-filter information when guest starts. telnet 10.66.106.66 4567 {"execute":"qmp_capabilities"} { "execute": "query-rx-filter", "arguments": { "name": "net0" } } Test result: Vlan table display repeat four times: {"return": [{"promiscuous": false, "name": "net1", "main-mac": "32:d7:63:b5:a9:54", "unicast": "normal", "vlan": "all", "vlan-table": [4095, 4094, 4093, 4092, 4091, 4090, 4089, 4088, 4087, 4086, 4085, 4084,.....3,2,1,0]... So this bug reproduce --------------------------------------------------------------------------------- Verify this bug with below version: qemu-kvm-1.5.3-109.el7.x86_64 3.10.0-378.el7.x86_64 The same test steps: Test result: [root@dhcp-65-190 Downloads]# telnet 10.66.8.118 4567 Trying 10.66.8.118... Connected to 10.66.8.118. Escape character is '^]'. {"QMP": {"version": {"qemu": {"micro": 3, "minor": 5, "major": 1}, "package": " (qemu-kvm-1.5.3-109.el7)"}, "capabilities": []}} {"execute":"qmp_capabilities"} {"return": {}} {"timestamp": {"seconds": 1463467473, "microseconds": 265162}, "event": "NIC_RX_FILTER_CHANGED", "data": {"name": "net1", "path": "/machine/peripheral/net1/virtio-backend"}} { "execute": "query-rx-filter", "arguments": { "name": "net1" } } {"return": [{"promiscuous": false, "name": "net1", "main-mac": "32:d7:63:b5:a9:54", "unicast": "normal", "vlan": "all", "vlan-table": [4095, 4094, 4093, 4092, 4091, 4090, 4089, 4088, 4087, 4086, 4085, 4084, 4083, 4082, 4081, 4080, 4079, 4078, 4077, 4076, 4075, 4074, 4073, 4072, 4071, 4070, 4069, 4068, 4067, 4066, 4065, 4064, 4063, 4062, 4061, 4060, 4059, 4058, 4057 no repeat display vlan table, So this bug fix well.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2016-2585.html