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Re: [Nbd] write_zeroes/trim on the whole disk



On 24.09.2016 19:31, Alex Bligh wrote:
On 24 Sep 2016, at 13:06, Vladimir Sementsov-Ogievskiy <vsementsov@...2319...> wrote:

Note: if disk size is not aligned to X we will have to send request larger than the disk size to clear the whole disk.
If you look at the block size extension, the size of the disk must be an exact multiple of the minimum block size. So that would work.


But there is no guarantee that disk_size/block_size < INT_MAX.. May be, additional option, specifying the shift would be better. With convention that if offset+length exceeds disk size, length should be recalculated as disk_size-offset.

--
Best regards,
Vladimir




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