Re: [Qemu-devel] [Qemu-block] [PULL 3/3] backup: Use copy offloading

2018-07-03 Thread John Snow
On 07/03/2018 12:53 PM, John Snow wrote: > > > On 07/02/2018 11:46 PM, Jeff Cody wrote: >> From: Fam Zheng >> >> The implementation is similar to the 'qemu-img convert'. In the >> beginning of the job, offloaded copy is attempted. If it fails, further >> I/O will go through the existing bounc

Re: [Qemu-devel] [Qemu-block] [PULL 3/3] backup: Use copy offloading

2018-07-03 Thread John Snow
On 07/02/2018 11:46 PM, Jeff Cody wrote: > From: Fam Zheng > > The implementation is similar to the 'qemu-img convert'. In the > beginning of the job, offloaded copy is attempted. If it fails, further > I/O will go through the existing bounce buffer code path. > > Then, as Kevin pointed out,