Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 13.08.19 18:45, Vladimir Sementsov-Ogievskiy wrote: > 13.08.2019 19:30, Max Reitz wrote: >> On 13.08.19 17:32, Vladimir Sementsov-Ogievskiy wrote: >>> 13.08.2019 18:02, Max Reitz wrote: On 13.08.19 17:00, Vladimir Sementsov-Ogievskiy wrote: > 13.08.2019 17:57, Max Reitz wrote: >>

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

13.08.2019 19:30, Max Reitz wrote: > On 13.08.19 17:32, Vladimir Sementsov-Ogievskiy wrote: >> 13.08.2019 18:02, Max Reitz wrote: >>> On 13.08.19 17:00, Vladimir Sementsov-Ogievskiy wrote: 13.08.2019 17:57, Max Reitz wrote: > On 13.08.19 16:39, Vladimir Sementsov-Ogievskiy wrote: >>

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 13.08.19 17:32, Vladimir Sementsov-Ogievskiy wrote: > 13.08.2019 18:02, Max Reitz wrote: >> On 13.08.19 17:00, Vladimir Sementsov-Ogievskiy wrote: >>> 13.08.2019 17:57, Max Reitz wrote: On 13.08.19 16:39, Vladimir Sementsov-Ogievskiy wrote: > 13.08.2019 17:23, Max Reitz wrote: >>

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

13.08.2019 18:02, Max Reitz wrote: > On 13.08.19 17:00, Vladimir Sementsov-Ogievskiy wrote: >> 13.08.2019 17:57, Max Reitz wrote: >>> On 13.08.19 16:39, Vladimir Sementsov-Ogievskiy wrote: 13.08.2019 17:23, Max Reitz wrote: > On 13.08.19 16:14, Vladimir Sementsov-Ogievskiy wrote: >>

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 13.08.19 17:00, Vladimir Sementsov-Ogievskiy wrote: > 13.08.2019 17:57, Max Reitz wrote: >> On 13.08.19 16:39, Vladimir Sementsov-Ogievskiy wrote: >>> 13.08.2019 17:23, Max Reitz wrote: On 13.08.19 16:14, Vladimir Sementsov-Ogievskiy wrote: > 12.08.2019 19:37, Vladimir

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

13.08.2019 17:57, Max Reitz wrote: > On 13.08.19 16:39, Vladimir Sementsov-Ogievskiy wrote: >> 13.08.2019 17:23, Max Reitz wrote: >>> On 13.08.19 16:14, Vladimir Sementsov-Ogievskiy wrote: 12.08.2019 19:37, Vladimir Sementsov-Ogievskiy wrote: > 12.08.2019 19:11, Max Reitz wrote: >> On

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 13.08.19 16:39, Vladimir Sementsov-Ogievskiy wrote: > 13.08.2019 17:23, Max Reitz wrote: >> On 13.08.19 16:14, Vladimir Sementsov-Ogievskiy wrote: >>> 12.08.2019 19:37, Vladimir Sementsov-Ogievskiy wrote: 12.08.2019 19:11, Max Reitz wrote: > On 12.08.19 17:47, Vladimir

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

13.08.2019 17:23, Max Reitz wrote: > On 13.08.19 16:14, Vladimir Sementsov-Ogievskiy wrote: >> 12.08.2019 19:37, Vladimir Sementsov-Ogievskiy wrote: >>> 12.08.2019 19:11, Max Reitz wrote: On 12.08.19 17:47, Vladimir Sementsov-Ogievskiy wrote: > 12.08.2019 18:10, Max Reitz wrote: >> On

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 13.08.19 16:14, Vladimir Sementsov-Ogievskiy wrote: > 12.08.2019 19:37, Vladimir Sementsov-Ogievskiy wrote: >> 12.08.2019 19:11, Max Reitz wrote: >>> On 12.08.19 17:47, Vladimir Sementsov-Ogievskiy wrote: 12.08.2019 18:10, Max Reitz wrote: > On 10.08.19 21:31, Vladimir

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

12.08.2019 19:37, Vladimir Sementsov-Ogievskiy wrote: > 12.08.2019 19:11, Max Reitz wrote: >> On 12.08.19 17:47, Vladimir Sementsov-Ogievskiy wrote: >>> 12.08.2019 18:10, Max Reitz wrote: On 10.08.19 21:31, Vladimir Sementsov-Ogievskiy wrote: > backup_cow_with_offload can transfer more

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

12.08.2019 19:11, Max Reitz wrote: > On 12.08.19 17:47, Vladimir Sementsov-Ogievskiy wrote: >> 12.08.2019 18:10, Max Reitz wrote: >>> On 10.08.19 21:31, Vladimir Sementsov-Ogievskiy wrote: backup_cow_with_offload can transfer more than one cluster. Let backup_cow_with_bounce_buffer

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 12.08.19 17:47, Vladimir Sementsov-Ogievskiy wrote: > 12.08.2019 18:10, Max Reitz wrote: >> On 10.08.19 21:31, Vladimir Sementsov-Ogievskiy wrote: >>> backup_cow_with_offload can transfer more than one cluster. Let >>> backup_cow_with_bounce_buffer behave similarly. It reduces the number >>> of

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

12.08.2019 18:10, Max Reitz wrote: > On 10.08.19 21:31, Vladimir Sementsov-Ogievskiy wrote: >> backup_cow_with_offload can transfer more than one cluster. Let >> backup_cow_with_bounce_buffer behave similarly. It reduces the number >> of IO requests, since there is no need to copy cluster by

Re: [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

On 10.08.19 21:31, Vladimir Sementsov-Ogievskiy wrote: > backup_cow_with_offload can transfer more than one cluster. Let > backup_cow_with_bounce_buffer behave similarly. It reduces the number > of IO requests, since there is no need to copy cluster by cluster. > > Logic around bounce_buffer

[Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once

backup_cow_with_offload can transfer more than one cluster. Let backup_cow_with_bounce_buffer behave similarly. It reduces the number of IO requests, since there is no need to copy cluster by cluster. Logic around bounce_buffer allocation changed: we can't just allocate one-cluster-sized buffer