From: Sarah Newman <srn@prgmr.com>
To: George Dunlap <George.Dunlap@eu.citrix.com>
Cc: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Severe guest disk corruption with device_model_stubdomain_override=1...
Date: Thu, 24 Mar 2016 10:20:07 -0700 [thread overview]
Message-ID: <56F421C7.4010107@prgmr.com> (raw)
In-Reply-To: <CAFLBxZbFanTs=5wP6HzR0JjWBATmAsmfnpefBWaZrZ2h9C5YTQ@mail.gmail.com>
On 03/24/2016 02:55 AM, George Dunlap wrote:
> On Wed, Mar 23, 2016 at 9:46 PM, Sarah Newman <srn@prgmr.com> wrote:
>> On 03/22/2016 11:03 PM, Sarah Newman wrote:
>>> And nested xen.
>>>
>>> CPU: AMD Opteron 2352
>>> Outer configuration: Xen4CentOS 6 xen 4.6.1-2.el6, linux 3.18.25-18.el6.x86_64
>>> Inner configuration: Xen4CentOS 6 xen 4.6.1-2.el6, linux 3.18.25-19.el6.x86_64
>>> Inner xen command line: cpuinfo loglvl=all guest_loglvl=error dom0_mem=512M,max:512M com1=115200,8n1 console=com1 dom0_max_vcpus=1 dom0_vcpus_pin=true
>>> Inner linux command line: ro root=LABEL=DISK rootflags=barrier=0 swiotlb=32768 console=hvc0
>>
>>> xen_platform_pci seems to be ignored with device_model_stubdomain_override=1. So I don't think I can test what happens with the 3.18.25-19.el6.x86_64
>>> kernel, no nested xen, and non-paravirtual block devices.
>>
>> The patch submitted in http://lists.xenproject.org/archives/html/xen-devel/2016-03/msg03080.html appears to fix the issue.
>
> This is the best kind of bug report to come in to find in the morning
> -- reported, then fix posted. :-)
>
> But your patch to minios is for the netfront driver -- why would that
> cause a fault in the emulated disk? Did the guest hang because the
> stubdomain was spinning rather than handling requests?
Please see https://github.com/QubesOS/qubes-issues/issues/1486 and http://lists.xenproject.org/archives/html/xen-devel/2015-12/msg00917.html .
This was reported as a bug almost four months ago, but it got dropped on the floor.
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prev parent reply other threads:[~2016-03-24 17:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-23 6:03 Severe guest disk corruption with device_model_stubdomain_override=1 Sarah Newman
2016-03-23 21:46 ` Sarah Newman
2016-03-24 4:26 ` Sarah Newman
2016-03-24 9:55 ` George Dunlap
2016-03-24 17:20 ` Sarah Newman [this message]
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