Bug 845489

Summary: win2008 guest hangs during booting with huge page mem on rhel5.9
Product: Red Hat Enterprise Linux 5 Reporter: Shaolong Hu <shu>
Component: kvmAssignee: Andrea Arcangeli <aarcange>
Status: CLOSED WONTFIX QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 5.9CC: aarcange, chayang, juzhang, michen, mkenneth, rhod, virt-maint
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Known Issue
Doc Text:
A Microsoft Windows 2008 guest can become unresponsive during boot if huge page memory is enabled on the Red Hat Enterprise Linux 5.9 host. To work around this problem, disable huge page memory on the Red Hat Enterprise Linux 5.9 host.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2013-03-28 18:24:08 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 Shaolong Hu 2012-08-03 08:38:07 UTC 
Description of problem:
-------------------------
boot win2008 guest with huge page mem, guest hangs during booting.


Version-Release number of selected component (if applicable):
---------------------------------------------------------------
host:
kvm-83-258.el5
kernel-2.6.18-333.el5

guest:
win2008-64 sp2

How reproducible:
-----------------
100%


Steps to Reproduce:
---------------------
1.on host:
mount -t hugetlbfs none /mnt/
echo 1500 > /proc/sys/vm/nr_hugepages

2./usr/libexec/qemu-kvm -no-hpet -rtc-td-hack -smp 4 -m 2G -name win2008 -uuid 31e71eea-d178-4988-89da-25b2e4484001 -drive file=win2008-64-virtio.qcow2,format=qcow2,cache=off,index=0,boot=on,media=disk,if=virtio -monitor stdio -usbdevice tablet -net nic,vlan=0,model=virtio -net tap,vlan=0,ifname=net1,script=/etc/qemu-ifup -M rhel5.6.0 -no-kvm-pit-reinjection -spice port=5930,disable-ticketing -qxl 1 -mem-path /mnt



Actual results:
---------------------------
guest hangs during booting.


Additional info:
------------------
Change guest image to RHEL6.3-64, win2003-64, win7-64, all boot correctly.
Comment 1 Shaolong Hu 2012-08-03 08:39:36 UTC 
win2008 guest boot correctly without "-mem-path /mnt".
Comment 2 Ronen Hod 2012-08-08 15:26:59 UTC 
Andrea,
I wouldn't fix this bug, and we can probably close this bug using a tech-note that describes the limitations.
Comment 3 Ronen Hod 2013-03-28 18:23:30 UTC 
Andrea,
Please take a look at Comment 1 and write a short tech-note.
I will close this bug.
Comment 5 Andrea Arcangeli 2013-04-05 12:36:03 UTC 
tech note from comment #1: win2008-64 guest boot correctly without -mem-path/hugetlbfs on RHEL5.9 host.