Re: [PATCH V4 0/5] Introduce Advanced Watch Dog module

From: "Zhang, Chen" <chen.zhang@intel.com>
To: "Jason Wang" <jasowang@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>,
	qemu-dev <qemu-devel@nongnu.org>,
	"Eric Blake" <eblake@redhat.com>,
	libvir-list@redhat.com
Cc: Zhang Chen <zhangckid@gmail.com>
Subject: Re: [PATCH V4 0/5] Introduce Advanced Watch Dog module
Date: Thu, 20 Feb 2020 11:36:12 +0800	[thread overview]
Message-ID: <c6564993-ec06-7fe1-137d-956f3d554e74@intel.com> (raw)
In-Reply-To: <783bac16-0e4d-f027-3e4a-b6fff500c244@redhat.com>

On 2/12/2020 10:56 AM, Jason Wang wrote:
> On 2020/2/11 下午4:58, Zhang, Chen wrote:
>>> -----Original Message-----
>>> From: Jason Wang<jasowang@redhat.com>
>>> Sent: Monday, January 20, 2020 10:57 AM
>>> To: Zhang, Chen<chen.zhang@intel.com>; Paolo Bonzini
>>> <pbonzini@redhat.com>; Philippe Mathieu-Daudé<philmd@redhat.com>;
>>> qemu-dev<qemu-devel@nongnu.org>
>>> Cc: Zhang Chen<zhangckid@gmail.com>
>>> Subject: Re: [PATCH V4 0/5] Introduce Advanced Watch Dog module
>>>
>>>
>>> On 2020/1/19 下午5:10, Zhang, Chen wrote:
>>>> Hi~
>>>>
>>>> Anyone have comments about this module?
>>> Hi Chen:
>>>
>>> I will take a look at this series.
>> Sorry for slow reply due to CNY and extend leave.
>> OK, waiting your comments~ Thanks~
>>
>>> Two general questions:
>>>
>>> - if it can detect more than network stall, it should not belong to /net
>> This module use network connection status to detect all the issue(Host to Guest/Host to Host/Host to Admin...).
>> The target is more than network but all use network way. So it is looks a tricky problem.
>
> Ok.
>
>
>>> - need to convince libvirt guys for this proposal, since usually it's the duty of
>>> upper layer instead of qemu itself
>>>
>> Yes, It looks a upper layer responsibility, but In the cover latter I have explained the reason why we need this in Qemu.
>>    try to make this module as simple as possible. This module give upper layer software a new way to connect/monitoring Qemu.
>> And due to all the COLO code implement in Qemu side, Many customer want to use this FT solution without other dependencies,
>> it is very easy to integrated to real product.
>>
>> Thanks
>> Zhang Chen
>
> I would like to hear from libvirt about such design.

Hi Jason,

OK. I add the libvirt mailing list in this thread.

The full mail discussion and patches:

https://lists.nongnu.org/archive/html/qemu-devel/2020-02/msg02611.html

By the way, I noticed Eric is libvirt maintianer.

Hi Eric and Paolo, Can you give some comments about this series?

Thanks

Zhang Chen

>
> Thanks
>