On Thu, Jun 16, 2016 at 08:53:12PM -0600, Eric Blake wrote:
> On 06/16/2016 04:10 AM, Stefan Hajnoczi wrote:
>
> >
> > io_sectors currently only accounts for bytes written, not bytes read.
> >
> > Therefore, I think we need:
> >
> > /* Don't charge for efficient zero writes */
> > if (drv->bdrv
On 06/16/2016 04:10 AM, Stefan Hajnoczi wrote:
>
> io_sectors currently only accounts for bytes written, not bytes read.
>
> Therefore, I think we need:
>
> /* Don't charge for efficient zero writes */
> if (drv->bdrv_co_pwrite_zeroes) {
> io_sectors = 0;
> }
That's not sufficient. NBD wi
On Wed, Jun 15, 2016 at 01:37:18PM +0300, Denis V. Lunev wrote:
> On 06/15/2016 12:19 PM, Stefan Hajnoczi wrote:
> > On Tue, Jun 14, 2016 at 09:20:47PM -0600, Eric Blake wrote:
> > > On 06/14/2016 09:25 AM, Denis V. Lunev wrote:
> > > > We should not take into account zero blocks for delay calculat
On 06/15/2016 12:19 PM, Stefan Hajnoczi wrote:
On Tue, Jun 14, 2016 at 09:20:47PM -0600, Eric Blake wrote:
On 06/14/2016 09:25 AM, Denis V. Lunev wrote:
We should not take into account zero blocks for delay calculations.
They are not read and thus IO throttling is not required. In the
other cas
On Tue, Jun 14, 2016 at 09:20:47PM -0600, Eric Blake wrote:
> On 06/14/2016 09:25 AM, Denis V. Lunev wrote:
> > We should not take into account zero blocks for delay calculations.
> > They are not read and thus IO throttling is not required. In the
> > other case VM migration with 16 Tb QCOW2 disk
On 06/14/2016 09:25 AM, Denis V. Lunev wrote:
> We should not take into account zero blocks for delay calculations.
> They are not read and thus IO throttling is not required. In the
> other case VM migration with 16 Tb QCOW2 disk with 4 Gb of data takes
> days.
>
> Signed-off-by: Denis V. Lunev
We should not take into account zero blocks for delay calculations.
They are not read and thus IO throttling is not required. In the
other case VM migration with 16 Tb QCOW2 disk with 4 Gb of data takes
days.
Signed-off-by: Denis V. Lunev
Reviewed-by: Vladimir Sementsov-Ogievskiy
CC: Stefan Hajn
