[Sheepdog] [ANNOUNCE] Sheepdog 0.3.0 released

[MORITA Kazutaka]

At Sat, 31 Dec 2011 12:22:00 +0800,
Liu Yuan wrote:
> 
> On 12/29/2011 01:36 AM, MORITA Kazutaka wrote:
> 
> >  - add write-cache support
> >   http://lists.wpkg.org/pipermail/sheepdog/2011-October/001480.html
> > 
> 
> 
> Qemu folks has been playing with 'image streaming' feature that grab a
> image backed over network in the background. If the image is fully
> downloaded, the IO will be on that local image instead of routing to
> sheep cluster.

If users don't update the remote images on Sheepdog at all,
write-cache support is not needed.  But I don't think all users would
use Sheepdog with image streaming.  Write-cache support is one of the
essential features for block-level storage system to boost write
performance.

Thanks,

Kazutaka

> 
> http://lists.gnu.org/archive/html/qemu-devel/2011-06/msg01471.html
> 
> So I wonder if we need write-cache implemented by sheep that might
> duplicate this feature.