Mailing List Archive: Xen: Users

HVM system freeze on AMD system

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darren.s.shepherd at gmail

Aug 11, 2013, 11:20 AM

Post #1 of 4 (20 views)
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HVM system freeze on AMD system

I have an AMD system (A10-6800K on an ASUS F2A85-M) that completely hangs
when I use HVM. I've tested this on XenServer 6.2 and also CentOS 6.4 Xen
4.2.2. Sometimes it happens when the domain is started, other times after
20 minutes or so. So it's sort of random when exactly it happens, but
eventually any HVM domain will freeze the entire system.

The problem is I don't exactly know how to debug such a problem. Since the
system just freezes, there are no messages, error logs, or anything at
all. Can anybody point me to some information on how I might obtain
further information to debug this issue?

Other random things I tried. It will freeze with both ioapic_ack=old and
new. Also I tried running XenServer with the "safe" option and still the
same thing. Also, PV domains run fine, and in general the system is very
stable and memtest runs fine. Any help would be greatly appreciated. I
put together this system with the sole purpose of running HVM domains, so
I'm kinda bummed its hanging (I really don't want to use KVM).

Thanks,
Darren

nix at myproxylists

Aug 11, 2013, 3:16 PM

Post #2 of 4 (16 views)
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Re: HVM system freeze on AMD system [In reply to]

> I have an AMD system (A10-6800K on an ASUS F2A85-M) that completely hangs
> when I use HVM. I've tested this on XenServer 6.2 and also CentOS 6.4 Xen
> 4.2.2. Sometimes it happens when the domain is started, other times after
> 20 minutes or so. So it's sort of random when exactly it happens, but
> eventually any HVM domain will freeze the entire system.
>
> The problem is I don't exactly know how to debug such a problem. Since
> the
> system just freezes, there are no messages, error logs, or anything at
> all. Can anybody point me to some information on how I might obtain
> further information to debug this issue?
>
> Other random things I tried. It will freeze with both ioapic_ack=old and
> new. Also I tried running XenServer with the "safe" option and still the
> same thing. Also, PV domains run fine, and in general the system is very
> stable and memtest runs fine. Any help would be greatly appreciated. I
> put together this system with the sole purpose of running HVM domains, so
> I'm kinda bummed its hanging (I really don't want to use KVM).
>

Disable all power savings from DomU/BIOS; ie. run the CPU at full speed
without frequency scaling

Also did you ran CPU test that it is stable and won't overheat? I could
not think of anything else.

> Thanks,
> Darren
> _______________________________________________
> Xen-users mailing list
> Xen-users [at] lists
> http://lists.xen.org/xen-users

_______________________________________________
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http://lists.xen.org/xen-users

imre at auul

Aug 12, 2013, 1:58 AM

Post #3 of 4 (11 views)
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Re: HVM system freeze on AMD system [In reply to]

Hi!

> The problem is I don't exactly know how to debug such a problem.
> Since the system just freezes, there are no messages, error logs, or
> anything at all. Can anybody point me to some information on how I
> might obtain further information to debug this issue?

Sometimes i have been successful getting additional info, or at least
hints connecting serial console to a physical server (and also to the
guests). And then letting kernel messages to show there (console login:
is also helpful there). Connecting to serial console from within screen
or similar program is also helpful while it could log what is seen for
further inspection.

Best regards,
Imre

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john at jaser

Aug 12, 2013, 11:26 AM

Post #4 of 4 (10 views)
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Re: HVM system freeze on AMD system [In reply to]

(Sorry for top posting)

I have a system with exact same motherboard, but with A8 CPU. I had to
upgrade kernel to 3.9 to make all weirdness go away.

Fwiw
On Aug 11, 2013 2:24 PM, "Darren Shepherd" <darren.s.shepherd [at] gmail>
wrote:

> I have an AMD system (A10-6800K on an ASUS F2A85-M) that completely hangs
> when I use HVM. I've tested this on XenServer 6.2 and also CentOS 6.4 Xen
> 4.2.2. Sometimes it happens when the domain is started, other times after
> 20 minutes or so. So it's sort of random when exactly it happens, but
> eventually any HVM domain will freeze the entire system.
>
> The problem is I don't exactly know how to debug such a problem. Since
> the system just freezes, there are no messages, error logs, or anything at
> all. Can anybody point me to some information on how I might obtain
> further information to debug this issue?
>
> Other random things I tried. It will freeze with both ioapic_ack=old and
> new. Also I tried running XenServer with the "safe" option and still the
> same thing. Also, PV domains run fine, and in general the system is very
> stable and memtest runs fine. Any help would be greatly appreciated. I
> put together this system with the sole purpose of running HVM domains, so
> I'm kinda bummed its hanging (I really don't want to use KVM).
>
> Thanks,
> Darren
>
> _______________________________________________
> Xen-users mailing list
> Xen-users [at] lists
> http://lists.xen.org/xen-users
>

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