On 06/29/2016 10:36 AM, Paolo Bonzini wrote:
On 28/06/2016 23:01, Paolo Bonzini wrote:
On 24/06/2016 17:06, Denis V. Lunev wrote:
From: Evgeny Yakovlev
Some guests (win2008 server for example) do a lot of unnecessary
flushing when underlying media has not changed. This adds additional
overh
On 28/06/2016 23:01, Paolo Bonzini wrote:
>
>
> On 24/06/2016 17:06, Denis V. Lunev wrote:
>> From: Evgeny Yakovlev
>>
>> Some guests (win2008 server for example) do a lot of unnecessary
>> flushing when underlying media has not changed. This adds additional
>> overhead on host when calling fs
On 24/06/2016 17:06, Denis V. Lunev wrote:
> From: Evgeny Yakovlev
>
> Some guests (win2008 server for example) do a lot of unnecessary
> flushing when underlying media has not changed. This adds additional
> overhead on host when calling fsync/fdatasync.
>
> This change introduces a dirty fla
On 24.06.2016 18:31, Eric Blake wrote:
On 06/24/2016 09:06 AM, Denis V. Lunev wrote:
From: Evgeny Yakovlev
Some guests (win2008 server for example) do a lot of unnecessary
flushing when underlying media has not changed. This adds additional
overhead on host when calling fsync/fdatasync.
This
On 06/24/2016 09:06 AM, Denis V. Lunev wrote:
> From: Evgeny Yakovlev
>
> Some guests (win2008 server for example) do a lot of unnecessary
> flushing when underlying media has not changed. This adds additional
> overhead on host when calling fsync/fdatasync.
>
> This change introduces a dirty fl
From: Evgeny Yakovlev
Some guests (win2008 server for example) do a lot of unnecessary
flushing when underlying media has not changed. This adds additional
overhead on host when calling fsync/fdatasync.
This change introduces a dirty flag in BlockDriverState which is set
in bdrv_set_dirty and is