Re: [Qemu-devel] [PATCH 0/3] block: zero write detection

2011-10-12 Thread Stefan Hajnoczi
On Tue, Oct 11, 2011 at 03:46:28PM +0200, Kevin Wolf wrote: Am 07.10.2011 17:49, schrieb Stefan Hajnoczi: Image streaming copies data from the backing file into the image file. It is important to represent zero regions from the backing file efficiently during streaming, otherwise the

Re: [Qemu-devel] [PATCH 0/3] block: zero write detection

2011-10-12 Thread Kevin Wolf
Am 12.10.2011 12:39, schrieb Stefan Hajnoczi: On Tue, Oct 11, 2011 at 03:46:28PM +0200, Kevin Wolf wrote: Am 07.10.2011 17:49, schrieb Stefan Hajnoczi: Image streaming copies data from the backing file into the image file. It is important to represent zero regions from the backing file

Re: [Qemu-devel] [PATCH 0/3] block: zero write detection

2011-10-12 Thread Stefan Hajnoczi
On Wed, Oct 12, 2011 at 12:03 PM, Kevin Wolf kw...@redhat.com wrote: Am 12.10.2011 12:39, schrieb Stefan Hajnoczi: On Tue, Oct 11, 2011 at 03:46:28PM +0200, Kevin Wolf wrote: Am 07.10.2011 17:49, schrieb Stefan Hajnoczi: Image streaming copies data from the backing file into the image file.  

Re: [Qemu-devel] [PATCH 0/3] block: zero write detection

2011-10-11 Thread Kevin Wolf
Am 07.10.2011 17:49, schrieb Stefan Hajnoczi: Image streaming copies data from the backing file into the image file. It is important to represent zero regions from the backing file efficiently during streaming, otherwise the image file grows to the full virtual disk size and loses sparseness.

Re: [Qemu-devel] [PATCH 0/3] block: zero write detection

2011-10-09 Thread Mars.cao
On 10/07/2011 11:49 PM, Stefan Hajnoczi wrote: Image streaming copies data from the backing file into the image file. It is important to represent zero regions from the backing file efficiently during streaming, otherwise the image file grows to the full virtual disk size and loses sparseness.

[Qemu-devel] [PATCH 0/3] block: zero write detection

2011-10-07 Thread Stefan Hajnoczi
Image streaming copies data from the backing file into the image file. It is important to represent zero regions from the backing file efficiently during streaming, otherwise the image file grows to the full virtual disk size and loses sparseness. There are two ways to implement zero write