Bug 988624

Summary:	[virtio-win][netkvm]specific parameters in the old netkvme driver still exist after upgrade netkvm driver
Product:	Red Hat Enterprise Linux 6	Reporter:	lijin <lijin>
Component:	virtio-win	Assignee:	Yvugenfi <yvugenfi>
Status:	CLOSED WONTFIX	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	high
Version:	6.5	CC:	acathrow, bcao, bsarathy, qzhang
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Known Issue
Doc Text:	When upgrading the NetKVM driver through the Windows Device Manager, the old registry values are not removed. As a consequence, for example, non-existent parameters may be available.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-07-28 14:08:33 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description lijin 2013-07-26 02:20:03 UTC

Description of problem:
With build65,netkvm has only one "TestOnly" parameters:"TestOnly.RXThrottle",after downgrade to build 54,netkvm adapter has sevral "TestOnly" parameters,such as:TestOnly.DelayConnect,TestOnly.InterruptRecovery,TestOnly.Promiscuous,etc.
Then upgrade netkvm back to build 65,those "TestOnly" parameters still here,they should be removed.

Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux Server release 7.0 Beta (Maipo)
kernel-3.10.0-0.rc7.64.el7.x86_64
qemu-kvm-1.5.1-2.el7.x86_64
seabios-1.7.2.2-2.el7.x86_64
virtio-win-prewhql-65

How reproducible:
100%

Steps to Reproduce:
1.boot guest with netkvm:
/usr/libexec/qemu-kvm  \
-drive file=win2k8R2.qcow2,if=none,cache=none,media=disk,format=qcow2,id=drive-scsi-0 \
-device ide-drive,drive=drive-scsi-0,id=blk0,bootindex=0 \
-global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 \
-usb -device usb-tablet \
-monitor stdio \
-chardev socket,id=aaaa,path=/tmp/tttt,server,nowait \
-mon chardev=aaaa,mode=readline \
-spice port=5900,disable-ticketing -vga qxl \
-chardev file,path=/root/console.log,id=serial1 \
-device isa-serial,chardev=serial1,id=s1 \
-cpu 'Penryn' -M pc \
-smp 4,cores=2,threads=1,sockets=2 -m 6G \
-enable-kvm \
-netdev tap,sndbuf=0,id=hostnet1,vhost=on,script=/etc/qemu-ifup,downscript=no -device virtio-net-pci,netdev=hostnet1,id=net1,mac=00:52:12:16:54:46,bus=pci.0,addr=0x7 \

2.in guest,device manager--->Redhat Virtio Ethernet Adapter--->Advanced,check the parameters
3.downgrade netkvm driver to build 54
device manager--->Redhat Virtio Ethernet Adapter--->Advanced,,check the parameters
4.upgrade netkvm driver to build 65
device manager--->Redhat Virtio Ethernet Adapter--->Advanced,,check the parameters

Actual results:
after step4,parameters specific in build 54 still exist,but acctually those parameters have been removed in build65.

Expected results:
after upgrade to build 65,those parameter should not shown in netkvm

Additional info:
in rhel6 host,still hit this issue.

Comment 2 Yvugenfi@redhat.com 2013-07-28 14:08:33 UTC

Hi,

This is MS bug. If using upgrade through device manager the old registry values are not removed.

This bug should be documented.

Best regards,
Yan.