Re: [Qemu-devel] [PATCH v2 1/1] nbd: add zero-init parameter

2016-10-05 Thread Eric Blake
On 10/05/2016 05:57 AM, Denis V. Lunev wrote: > When using a nbd block device, the info about necessity of prior disk > zeroing could significantly improve the speed of certain operations > (e.g. backups). > > This patch also will allow to preserve QCOW2 images during migration. 'allow to' is not

Re: [Qemu-devel] [PATCH v2 1/1] nbd: add zero-init parameter

2016-10-05 Thread Kevin Wolf
Am 05.10.2016 um 12:57 hat Denis V. Lunev geschrieben: > When using a nbd block device, the info about necessity of prior disk > zeroing could significantly improve the speed of certain operations > (e.g. backups). > > This patch also will allow to preserve QCOW2 images during migration. > Managem

[Qemu-devel] [PATCH v2 1/1] nbd: add zero-init parameter

2016-10-05 Thread Denis V. Lunev
When using a nbd block device, the info about necessity of prior disk zeroing could significantly improve the speed of certain operations (e.g. backups). This patch also will allow to preserve QCOW2 images during migration. Management software now may specify zero-init option and thus abscent area