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Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty se
From: |
Zhang Haoyu |
Subject: |
Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector |
Date: |
Mon, 9 Mar 2015 16:14:38 +0800 |
Hi John, Vladimir
We can using active block commit to implement incremental backup without guest
disruption,
e.g.,
origin <= A <= B <= C <= current BDS,
a new external snapshot will be produced before every time backup,
we can migrate A, B, C, ... to destination,
then commit_active_start() the unneeded snapshot in source or destination end.
So, comparing with above mechanism,
what's the advantages of the incremental backup implemented by John and
Vladimir?
Thanks,
Zhang Haoyu
On 2015-03-09 15:38:40, Paolo Bonzini wrote:
>
>On 09/03/2015 08:03, Zhang Haoyu wrote:
>>
>> On 2015-03-03 18:00:09, Paolo Bonzini wrote:
>>>
>>> On 03/03/2015 07:52, Zhang Haoyu wrote:
>>>> Hi,
>>>> If introducing bitmap to bdrv_commit to track dirty sector,
>>>> could we implement guest non-disruption while performing commit?
>>>
>>> That is already implemented. It uses the same code that implements
>>> storage migration (block/mirror.c).
>>>
>> Hi Paolo,
>> do you mean commit_active_start()?
>
>Yes.
>
>Paolo
- [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector, Zhang Haoyu, 2015/03/03
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector, Paolo Bonzini, 2015/03/03
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector, Zhang Haoyu, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector, Paolo Bonzini, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector,
Zhang Haoyu <=
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to track dirty sector, Fam Zheng, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to trackdirty sector, Zhang Haoyu, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to trackdirty sector, Fam Zheng, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to trackdirtysector, Zhang Haoyu, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit to trackdirtysector, Fam Zheng, 2015/03/09
- Re: [Qemu-devel] [RFC] introduce bitmap to bdrv_commit totrackdirtysector, Zhang Haoyu, 2015/03/09