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Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API
From: |
John Snow |
Subject: |
Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API |
Date: |
Wed, 15 Nov 2017 16:20:59 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 11/13/2017 11:20 AM, Vladimir Sementsov-Ogievskiy wrote:
> Hi all.
>
> There are three qmp commands, needed to implement external backup API.
>
> Using these three commands, client may do all needed bitmap management by
> hand:
>
> on backup start we need to do a transaction:
> {disable old bitmap, create new bitmap}
>
> on backup success:
> drop old bitmap
>
> on backup fail:
> enable old bitmap
> merge new bitmap to old bitmap
> drop new bitmap
>
Can you give me an example of how you expect these commands to be used,
and why they're required?
I'm a little weary about how error-prone these commands might be and the
potential for incorrect usage seems... high. Why do we require them?
- [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Vladimir Sementsov-Ogievskiy, 2017/11/13
- [Qemu-devel] [PATCH 1/4] block/dirty-bitmap: add lock to bdrv_enable/disable_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2017/11/13
- [Qemu-devel] [PATCH 3/4] qmp: transaction support for block-dirty-bitmap-enable/disable, Vladimir Sementsov-Ogievskiy, 2017/11/13
- [Qemu-devel] [PATCH 4/4] qapi: add block-dirty-bitmap-merge, Vladimir Sementsov-Ogievskiy, 2017/11/13
- [Qemu-devel] [PATCH 2/4] qapi: add block-dirty-bitmap-enable/disable, Vladimir Sementsov-Ogievskiy, 2017/11/13
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API,
John Snow <=
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Vladimir Sementsov-Ogievskiy, 2017/11/16
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, John Snow, 2017/11/16
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Vladimir Sementsov-Ogievskiy, 2017/11/17
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, John Snow, 2017/11/17
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Kevin Wolf, 2017/11/21
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, John Snow, 2017/11/21
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Vladimir Sementsov-Ogievskiy, 2017/11/22
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Vladimir Sementsov-Ogievskiy, 2017/11/30
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Denis V. Lunev, 2017/11/20
- Re: [Qemu-devel] [PATCH for-2.12 0/4] qmp dirty bitmap API, Vladimir Sementsov-Ogievskiy, 2017/11/24