Description of problem: iperf stalls the driver
Version-Release number of selected component (if applicable): Win2008R2, virtio-win b96
How reproducible: Always
Steps to Reproduce:
1. Run Windows 2008R2 inside Qemu with virtio-net device, install NetKVM driver
2. Run iperf on Windows guest as server, "iperf -s"
3. Run iperf client on Linux host with several connections, like "iperf -c <NetKVM IP address> -P 4 -d -t 6000
Actual results: NetKVM driver stop functioning, ping doesn't respond, disable operation stalls
Expected results: Everything should run smoothly
Apparently, it is the same problem as reported under 1173034. I am marking the bug as duplicated, the patch is going to be posted today.
*** Bug 1173034 has been marked as a duplicate of this bug. ***
can NOT reproduce this issue with build 96
1.boot a win2k8R2 guest:
2.in guest cmd: #iperf.exe -s
3.on host run iperf client with 10 connections in parallel,such as:
#iperf -c <NetKVM IP address> -P 4 -d -t 6000
on both build 96 and build 102,guest network works fine during/after iperf test
/usr/libexec/qemu-kvm -name 096RNG2008R2TLK -enable-kvm -m 4G -smp 4 -uuid 73ef2d2b-4b5d-4f3c-90c9-6ef3bb6e3258 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/tmp/096RNG2008R2TLK,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -boot order=cd,menu=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=096RNG2008R2TLK,if=none,id=drive-ide0-0-0,format=raw,serial=mike_cao,cache=none -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive file=en_windows_server_2008_r2_standard_enterprise_datacenter_and_web_with_sp1_x64_dvd_617601.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive file=096RNG2008R2TLK.vfd,if=none,id=drive-fdc0-0-0,format=raw,cache=none -global isa-fdc.driveA=drive-fdc0-0-0 -netdev tap,script=/etc/qemu-ifup,downscript=no,id=hostnet0,queues=4 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:52:47:1e:03:cd,bus=pci.0,addr=0x3,vectors=10 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=isa_serial0 -device usb-tablet,id=input0 -vnc 0.0.0.0:0 -vga cirrus
Could you help to check comment#7,qe cannot reproduce this issue.
Is there any step not correct?
(In reply to lijin from comment #11)
> Hi dev,
> Could you help to check comment#7,qe cannot reproduce this issue.
> Is there any step not correct?
Will double check. Could be inconsistent reproduction in the first place.
(In reply to Yan Vugenfirer from comment #12)
> (In reply to lijin from comment #11)
> > Hi dev,
> > Could you help to check comment#7,qe cannot reproduce this issue.
> > Is there any step not correct?
> Will double check. Could be inconsistent reproduction in the first place.
Cannot reproduce as well. Build 96 was unstable in any case.
try with virtio-win-prewhql-105,steps same as comment #7,iperf test can finish correctly,guest network still alive.
Based on above ,this issue has been fixed already.
So change status to verified.
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.