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Re: [Qemu-block] [PATCH v5 01/27] block: Add flag bits for image locking
From: |
Max Reitz |
Subject: |
Re: [Qemu-block] [PATCH v5 01/27] block: Add flag bits for image locking |
Date: |
Tue, 24 May 2016 14:14:04 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 |
On 17.05.2016 09:35, Fam Zheng wrote:
> Later the block layer will automatically lock the images to avoid unexpected
> concurrent accesses to the same image, which will easily corrupt the metadata
> or user data, unless in some very special cases, like migration.
>
> The exceptional cases like shared storage migration and testing should
> set BDRV_O_SHARED_LOCK or BDRV_O_NO_LOCK to advise an appropriate
> locking mode.
>
> Signed-off-by: Fam Zheng <address@hidden>
> ---
> include/block/block.h | 2 ++
> 1 file changed, 2 insertions(+)
Reviewed-by: Max Reitz <address@hidden>
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- [Qemu-block] [PATCH v5 00/27] block: Lock images when opening, Fam Zheng, 2016/05/17
- [Qemu-block] [PATCH v5 01/27] block: Add flag bits for image locking, Fam Zheng, 2016/05/17
- Re: [Qemu-block] [PATCH v5 01/27] block: Add flag bits for image locking,
Max Reitz <=
- [Qemu-block] [PATCH v5 03/27] blockdev: Add and parse "lock-mode" option for image locking, Fam Zheng, 2016/05/17
- [Qemu-block] [PATCH v5 02/27] qapi: Add lock-mode in blockdev-add options, Fam Zheng, 2016/05/17
- [Qemu-block] [PATCH v5 04/27] block: Introduce image file locking, Fam Zheng, 2016/05/17
- [Qemu-block] [PATCH v5 05/27] block: Add bdrv_image_locked, Fam Zheng, 2016/05/17
- [Qemu-block] [PATCH v5 06/27] block: Make bdrv_reopen_{commit, abort} private functions, Fam Zheng, 2016/05/17