Re: [Qemu-devel] [PATCH 2/6] block: split write_zeroes always

2016-05-16 Thread Eric Blake
On 05/14/2016 06:01 AM, Denis V. Lunev wrote: > We should split requests even if they are less than write_zeroes_alignment. > For example we can have the following request: > offset 62k > size 4k > write_zeroes_alignment 64k > Original code will send 1 request covering 2 qcow2 clusters. One

[Qemu-devel] [PATCH 2/6] block: split write_zeroes always

2016-05-14 Thread Denis V. Lunev
We should split requests even if they are less than write_zeroes_alignment. For example we can have the following request: offset 62k size 4k write_zeroes_alignment 64k Original code will send 1 request covering 2 qcow2 clusters. One cluster could be zeroed as a whole, another could not be.