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Bug 750695

Summary: Operation about balloon inside guest(win2003-64bit) should not execute after balloon driver change status from disable to enable
Product: Red Hat Enterprise Linux 6 Reporter: langfang <flang>
Component: virtio-winAssignee: Yvugenfi <yvugenfi>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 6.2CC: acathrow, bcao, bsarathy, juzhang
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-11-02 06:50:53 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:

Description langfang 2011-11-02 04:26:50 UTC 
Description of problem:
disabled balloon size will work after enable balloon driver

Version-Release number of selected component (if applicable):
kernel:2.6.32-214.el6.x86_64
qemu-kvm-0.12.1.2-2.206.el6.x86_64
virtio-win:virtio-win-1.4.0-1.el6.noarch.rpm


How reproducible:
100%
CLI:/usr/libexec/qemu-kvm -m 2G -smp 2 -cpu cpu64-rhel6,+x2apic -usb -device usb-tablet -rtc base=localtime,clock=host,driftfix=slew -drive file=/mnt/win2003R2sp2_x64.qcow2.bak,format=qcow2,if=none,id=drive-ide0-0-0,werror=stop,rerror=stop,cache=none -device virtio-blk-pci,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,id=hostnet0,script=/etc/qemu-ifup -device virtio-net-pci,netdev=hostnet0,mac=00:10:20:2c:45:23,bus=pci.0,addr=0x4,id=net0 -boot order=dcn -uuid d2b0ab4c-d828-468e-8e30-ef5da1754db1 -rtc-td-hack -no-kvm-pit-reinjection -monitor stdio -name win2k3sp2-64 -drive file=/usr/share/virtio-win/virtio-win.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 -device virtio-balloon-pci,bus=pci.0,id=balloon0 -spice port=5830,disable-ticketing -vga qxl


Steps to Reproduce:
1.boot a win2003 guest with balloon device(....-device
virtio-balloon-pci,bus=pci.0,id=balloon0),and disable balloon driver
2.set ballloon size
(qemu) balloon 1024
balloon: actual=2048
3.enable balloon driver
4.view the balloon size
(qemu) info balloon
balloon: actual=1024
  
Actual results:the balloon size  change to disabled balloon size


Expected results:the balloon size will not change


Additional info:
Comment 1 langfang 2011-11-02 04:29:02 UTC 
i  have sent mail to vadim about this issue, create this bug to track this stuff.

On Tue, 2011-11-01 at 00:54 -0400, Fang Lang wrote:
> Hi,Vadim
>    sorry to bother you,there have a problem need you to help me~,i boot a win2003 guest with balloon device(-device virtio-balloon-pci,bus=pci.0,id=balloon0),when i diable the VirtIo Balloon Driver and then set ballloon size to 1600,the balloon size will not change,but when i enable the VirtIo Balloon Driver,the size will change to 1600,do you thank this phenomenon is normal,thanks~~~
> 
> 
>    my CLI:/usr/libexec/qemu-kvm -m 2G -smp 2 -cpu cpu64-rhel6,+x2apic -usb -device usb-tablet -rtc base=localtime,clock=host,driftfix=slew -drive file=/home/win2003R2sp2_x64.qcow2.bak,format=qcow2,if=none,id=drive-ide0-0-0,werror=stop,rerror=stop,cache=none -device virtio-blk-pci,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,id=hostnet0,script=/etc/qemu-ifup -device virtio-net-pci,netdev=hostnet0,mac=00:10:20:2c:45:23,bus=pci.0,addr=0x4,id=net0 -boot order=dcn -uuid d2b0ab4c-d828-468e-8e30-ef5da1754db1 -rtc-td-hack -no-kvm-pit-reinjection -monitor stdio -name win2k3sp2-64 -drive file=/usr/share/virtio-win/virtio-win.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 -device virtio-balloon-pci,bus=pci.0,id=balloon0 -spice port=5830,disable-ticketing -vga qxl

Thank you, 
I'll try to investigate this issue,
and come back to you asap.

Best regards,
Vadim.
Comment 3 Mike Cao 2011-11-02 06:50:53 UTC 

*** This bug has been marked as a duplicate of bug 750704 ***