win7 stuck on boot occasionally when apicv enabled

win7 stuck on boot occasionally when apicv enabled

[Sunguodong]

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Hi,
I am getting a vm stuck problem when booting a windows 7 guest on xen-4.6(latest version).
My hvm guest: Windows 7 64bit (installed pvdriver inside, pvdriver is downloaded from 'http://wiki.univention.de/index.php?title=Installing-signed-GPLPV-drivers')
My server's CPU model name : Intel(R) Xeon(R) CPU E5-2643 v2 @ 3.50GHz

This happens rarely, maybe only once in hundreds times of rebooting, and when this appens, it stucks on the Windows Logo screen.
In order to know where it stopped, I turned on the Boot message and OS Boot Information in OS. It showed something like bellow:
"
Micfosoft (R) Windows (R) Version 6.1 (Build 7600)
4 System Processors [4088 MB Memory] MultiProcessor Kernel
Boot Logging Enabled
"
then it stucks forever.

Then I turned off apicv with option 'apicv=0' and did the rebooting test again, the stuck problem didn't show up for at least 9000 times of rebooting.
So I think it is related with apicv, maybe interrupts loss occasionally when vm is booting when apicv is enabled.

Has anyone come across this problem before? Or what can I do to solve this?

Thank you.


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Re: win7 stuck on boot occasionally when apicv enabled

[Jan Beulich]

>>> On 03.06.15 at 11:31, <sunguodong@huawei.com> wrote:
> Hi,
> I am getting a vm stuck problem when booting a windows 7 guest on 
> xen-4.6(latest version).
> My hvm guest: Windows 7 64bit (installed pvdriver inside, pvdriver is 
> downloaded from 
> 'http://wiki.univention.de/index.php?title=Installing-signed-GPLPV-drivers')
> My server's CPU model name : Intel(R) Xeon(R) CPU E5-2643 v2 @ 3.50GHz
> 
> This happens rarely, maybe only once in hundreds times of rebooting, and 
> when this appens, it stucks on the Windows Logo screen.
> In order to know where it stopped, I turned on the Boot message and OS Boot 
> Information in OS. It showed something like bellow:
> "
> Micfosoft (R) Windows (R) Version 6.1 (Build 7600)
> 4 System Processors [4088 MB Memory] MultiProcessor Kernel
> Boot Logging Enabled
> "
> then it stucks forever.
> 
> Then I turned off apicv with option 'apicv=0' and did the rebooting test 
> again, the stuck problem didn't show up for at least 9000 times of rebooting.
> So I think it is related with apicv, maybe interrupts loss occasionally when 
> vm is booting when apicv is enabled.
> 
> Has anyone come across this problem before? Or what can I do to solve this?

Hmm, I first thought this could very well be the problem we're seeing
as random Windows install or migration failures in osstest, but we're
seeing at least the latter even on 4.3, which doesn't support that
feature. Cc-ing the VMX maintainers...

Jan

Re: win7 stuck on boot occasionally when apicv enabled

[Zhang, Yang Z]

Sunguodong wrote on 2015-06-03:
> Hi,
> 
> I am getting a vm stuck problem when booting a windows 7 guest on 
> xen-4.6(latest version).
> 
> My hvm guest: Windows 7 64bit (installed pvdriver inside, pvdriver is 
> downloaded from 
> 'http://wiki.univention.de/index.php?title=Installing-signed-GPLPV-dri
> vers')
> 
> My server's CPU model name : Intel(R) Xeon(R) CPU E5-2643 v2 @ 3.50GHz
> 
> 
> 
> This happens rarely, maybe only once in hundreds times of rebooting, 
> and when this appens, it stucks on the Windows Logo screen.
> 
> In order to know where it stopped, I turned on the Boot message and OS 
> Boot Information in OS. It showed something like bellow:
> 
> "
> 
> Micfosoft (R) Windows (R) Version 6.1 (Build 7600)
> 
> 4 System Processors [4088 MB Memory] MultiProcessor Kernel
> 
> Boot Logging Enabled
> 
> "
> 
> then it stucks forever.
> 
> 
> 
> Then I turned off apicv with option 'apicv=0' and did the rebooting 
> test again, the stuck problem didn't show up for at least 9000 times of rebooting.
> 
> So I think it is related with apicv, maybe interrupts loss 
> occasionally when vm is booting when apicv is enabled.
> 
> 
> 
> Has anyone come across this problem before? Or what can I do to solve this?

Can you try to use 'xl destroy && xl create' instead of reboot? I suspect there may be some status in VCPU doesn't be reset correctly during reboot.

btw, I guess you didn't enable the viridian in guest config? It's better to turn off it to help to narrow down the issue.

> 
> 
> 
> Thank you.
> 
>


Best regards,
Yang

答复: win7 stuck on boot occasionally when apicv enabled

[Sunguodong]

OK, I will test with 'xl destroy && xl create' next.
My current config is:
#######
builder = "hvm"
name = "win7-1"
#viridian = 1	# didn't enable the viridian here
memory = 4096
maxmem = 4096
vcpus = 4
pae=1
acpi=1
apic=1
sdl=0
vif = [ 'mac=00:16:3e:07:37:88,bridge=br0' ]
disk = [ 'file:/home/sda11/sungd/win7_64_2U_vhd-1,xvda,w' ]
vnc = 1
vnclisten = ''
vncdisplay = 0
#######

If I get the result, I'll let you know ASAP.

Thanks!

-----邮件原件-----
发件人: Zhang, Yang Z [mailto:yang.z.zhang@intel.com] 
发送时间: 2015年6月11日 16:01
收件人: Sunguodong; xen-devel@lists.xen.org
抄送: jiongxi.li@intel.com; Liuqiming (John); Fanhenglong
主题: RE: win7 stuck on boot occasionally when apicv enabled

Sunguodong wrote on 2015-06-03:
> Hi,
> 
> I am getting a vm stuck problem when booting a windows 7 guest on 
> xen-4.6(latest version).
> 
> My hvm guest: Windows 7 64bit (installed pvdriver inside, pvdriver is 
> downloaded from 
> 'http://wiki.univention.de/index.php?title=Installing-signed-GPLPV-dri
> vers')
> 
> My server's CPU model name : Intel(R) Xeon(R) CPU E5-2643 v2 @ 3.50GHz
> 
> 
> 
> This happens rarely, maybe only once in hundreds times of rebooting, 
> and when this appens, it stucks on the Windows Logo screen.
> 
> In order to know where it stopped, I turned on the Boot message and OS 
> Boot Information in OS. It showed something like bellow:
> 
> "
> 
> Micfosoft (R) Windows (R) Version 6.1 (Build 7600)
> 
> 4 System Processors [4088 MB Memory] MultiProcessor Kernel
> 
> Boot Logging Enabled
> 
> "
> 
> then it stucks forever.
> 
> 
> 
> Then I turned off apicv with option 'apicv=0' and did the rebooting 
> test again, the stuck problem didn't show up for at least 9000 times of rebooting.
> 
> So I think it is related with apicv, maybe interrupts loss 
> occasionally when vm is booting when apicv is enabled.
> 
> 
> 
> Has anyone come across this problem before? Or what can I do to solve this?

Can you try to use 'xl destroy && xl create' instead of reboot? I suspect there may be some status in VCPU doesn't be reset correctly during reboot.

btw, I guess you didn't enable the viridian in guest config? It's better to turn off it to help to narrow down the issue.

> 
> 
> 
> Thank you.
> 
>


Best regards,
Yang


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