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Re: [Qemu-devel] [PATCH v2 2/2] sheepdog: implement .bdrv_co_is_allocate
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From: |
Liu Yuan |
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Subject: |
Re: [Qemu-devel] [PATCH v2 2/2] sheepdog: implement .bdrv_co_is_allocated() |
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Date: |
Tue, 23 Apr 2013 13:55:23 +0800 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 |
On 04/23/2013 04:46 AM, Stefan Hajnoczi wrote:
> The first sector is included in nb_sectors. Mathematically the range
> is defined as [sector_num, sector_num + nb_sectors). Notice the
> half-open interval, sector_num + nb_sectors is excluded. The last
> included sector is sector_num + nb_sectors - 1.
>
> You can look at qcow2's implementation, especially
> count_contiguous_clusters() to double-check.
Okay, thanks for you explanation. I'll update it in v4.
Yuan