Bug 1022990

Description of problem:

Guest(after boot up) sometimes will hang when migrate guest during boot.



Version-Release number of selected component (if applicable):

Host A:RHEL6.5
# uname -r
2.6.32-424.el6.x86_64
# rpm -q qemu-kvm
qemu-kvm-0.12.1.2-2.414.el6.x86_64
# rpm -q seabios
seabios-0.6.1.2-28.el6.x86_64

Host B: RHEL6.0.z
# uname -r
2.6.32-71.40.1.el6.x86_64
# rpm -q qemu-kvm
qemu-kvm-0.12.1.2-2.113.el6_0.8.x86_64
# rpm -q seabios
seabios-0.5.1-3.el6.x86_64


Guest:win2008r2-sp1

How reproducible:

1/15

Steps to Reproduce:
1.Boot guest on hostA(use "-M rhel6.0.0)

2.While guest during boot,do migrate guest from hostA to hostB
(qemu)migrate -d tcp:10.66.83.196:5999 

3.After migration finished 

HostA
(qemu) info migrate
Migration status: completed
total time: 14776 milliseconds
downtime: 194 milliseconds
transferred ram: 399177 kbytes
remaining ram: 0 kbytes
total ram: 4211008 kbytes

HostB
(qemu) info status
VM status: running

4.Login guest-->input password


Actual results:
Guest hang
 "Preparing your desktop...."--->please see attachment

Expected results:

Guest work well

Additional info:
Host A(rhel6.5)
Host B(rhel6.0.z)

1)Tried about 30 times ,hit 4 times. By the way hit the bug when migrate from hostA to hostB.But not hit when migrate from hostB to hostA .

2)My CLI
 /usr/libexec/qemu-kvm  -M rhel6.0.0 -enable-kvm -m 4096 -smp 4,sockets=2,cores=2,threads=1 -name win2008r2 -uuid e032ecb9-44b8-917f-c734-adb365febf48 -nodefconfig -nodefaults -monitor stdio -rtc base=utc -boot c -drive file=/mnt/win2k8-r2-sp1-install6.5host.raw,if=none,id=drive-virtio-disk0,boot=on,format=raw,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0 -drive 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  -usb -device usb-tablet,id=input0 -vnc :10 -vga std -device AC97,id=sound0,bus=pci.0,addr=0x4 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6  -netdev tap,id=hostnet2,fd=7 -device rtl8139,netdev=hostnet2,id=net0,mac=00:10:20:2d:31:21 7<>/dev/tap7

3)MY host info-->host B
processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 23
model name	: Intel(R) Xeon(R) CPU           E5205  @ 1.86GHz
stepping	: 6
cpu MHz		: 1861.914
cache size	: 6144 KB
physical id	: 3
siblings	: 2
core id		: 1
cpu cores	: 2
apicid		: 7
initial apicid	: 7
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips	: 3723.86
clflush size	: 64
cache_alignment	: 64
address sizes	: 38 bits physical, 48 bits virtual
power management:

Host B:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 23
model name	: Intel(R) Xeon(R) CPU           E5205  @ 1.86GHz
stepping	: 6
cpu MHz		: 1861.962
cache size	: 6144 KB
physical id	: 3
siblings	: 2
core id		: 1
cpu cores	: 2
apicid		: 7
initial apicid	: 7
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm dts tpr_shadow vnmi flexpriority
bogomips	: 3723.86
clflush size	: 64
cache_alignment	: 64
address sizes	: 38 bits physical, 48 bits virtual
power management: