[pve-devel] [PATCH] Increases the dd read/write speed when migrating LVM disks. This should bring LVM migration speed up to match that of rsyncing qcows.

[Wolfgang Bumiller]

On Wed, Aug 24, 2016 at 07:19:04PM +0200, Dietmar Maurer wrote:
> I am afraid that increasing block size is bad for sparse file detection.
> 
> Seems dd simply use "bs" for for memory buffer and zero block detection?

The speed values for 4k look acceptable though? Might be a good
compromise?