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Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background
From: |
Wen Congyang |
Subject: |
Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background |
Date: |
Wed, 15 Feb 2012 11:47:20 +0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 |
At 02/15/2012 02:27 AM, Jan Kiszka Wrote:
> On 2012-02-14 19:05, Jan Kiszka wrote:
>> On 2012-02-09 04:28, Wen Congyang wrote:
>>> The new monitor command dump may take long time to finish. So we need run it
>>> at the background.
>>
>> How does it work? Like live migration, i.e. you retransmit (overwrite)
>> already written but then dirtied pages? Hmm... no.
>>
>> What does background mean then? What is the use case? What if the user
>> decides to resume the vm?
>
> OK, that is addressed in patch 15! I would suggest merging it into this
> patch. It makes sense to handle that case gracefully right from the
> beginning.
OK, I will merge it.
>
> OK, now I have some other question: What is the point of rate-limiting
> the dump? The guest is not running, thus not competing for bandwidth.
I use bandwidth to try to control the writing speed. If we write the vmcore
to disk in a high speed, it may affect some other appilications which use
the same disk too.
Thanks
Wen Congyang
>
> Jan
>
- Re: [Qemu-devel] [RFC][PATCH 08/16 v6] target-i386: add API to get dump info, (continued)
Re: [Qemu-devel] [RFC][PATCH 08/16 v6] target-i386: add API to get dump info, Peter Maydell, 2012/02/15
[Qemu-devel] [RFC][PATCH 09/16 v6] introduce a new monitor command 'dump' to dump guest's memory, Wen Congyang, 2012/02/08
[Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Wen Congyang, 2012/02/08
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Jan Kiszka, 2012/02/14
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Jan Kiszka, 2012/02/14
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background,
Wen Congyang <=
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Jan Kiszka, 2012/02/15
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Wen Congyang, 2012/02/15
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Jan Kiszka, 2012/02/15
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Wen Congyang, 2012/02/15
- Re: [Qemu-devel] [RFC][PATCH 10/16 v6] run dump at the background, Jan Kiszka, 2012/02/15
[Qemu-devel] [RFC][PATCH 11/16 v6] support detached dump, Wen Congyang, 2012/02/08
[Qemu-devel] [RFC][PATCH 12/16 v6] support to cancel the current dumping, Wen Congyang, 2012/02/08
[Qemu-devel] [RFC][PATCH 13/16 v6] support to set dumping speed, Wen Congyang, 2012/02/08
[Qemu-devel] [RFC][PATCH 14/16 v6] support to query dumping status, Wen Congyang, 2012/02/08
[Qemu-devel] [RFC][PATCH 15/16 v6] auto cancel dumping after vm state is changed to run, Wen Congyang, 2012/02/08