06.05.2019 7:24, Liang Li wrote:
> On Tue, Apr 30, 2019 at 10:35:32AM +, Vladimir Sementsov-Ogievskiy wrote:
>> 28.04.2019 13:01, Liang Li wrote:
>>> If the backup target is a slow device like ceph rbd, the backup
>>> process will affect guest BLK write IO performance seriously,
>>> it's cause
On Tue, Apr 30, 2019 at 10:35:32AM +, Vladimir Sementsov-Ogievskiy wrote:
> 28.04.2019 13:01, Liang Li wrote:
> > If the backup target is a slow device like ceph rbd, the backup
> > process will affect guest BLK write IO performance seriously,
> > it's cause by the drawback of COW mechanism, if
28.04.2019 13:01, Liang Li wrote:
> If the backup target is a slow device like ceph rbd, the backup
> process will affect guest BLK write IO performance seriously,
> it's cause by the drawback of COW mechanism, if guest overwrite the
> backup BLK area, the IO can only be processed after the data ha
