[Sheepdog] Sheepdog 0.3.0 schedule and 0.4.0 plan

[MORITA Kazutaka]

At Tue, 15 Nov 2011 10:48:31 +0800,
Liu Yuan wrote:
> 
> On 11/15/2011 10:05 AM, MORITA Kazutaka wrote:
> 
> > Hi,
> > 
> > I finished all of the cluster driver implementation we planed, so I
> > think of releasing 0.3.0 this weekend.  If you have pending patches
> > for 0.3.0, please send them until Nov 18th.  I'll spend this week
> > testing Sheepdog.
> > 
> > The planned big features for 0.4.0 are as follows:
> > 
> >  - add write-cache support
> >    http://lists.wpkg.org/pipermail/sheepdog/2011-October/001480.html
> > 
> >  - support larger object size
> >    http://lists.wpkg.org/pipermail/sheepdog/2011-November/001914.html
> > 
> >  - use differential copy for fast object recovery
> >    http://lists.wpkg.org/pipermail/sheepdog/2011-July/001131.html
> > 
> >  - add hierarchical zones support
> >  - reclaim unused objects automatically
> >    http://lists.wpkg.org/pipermail/sheepdog/2011-October/001587.html
> > 
> > Let me know if there are others you want to include in the 0.4.0
> > release.
> > 
> > 
> 
> 
> Hi Kazum,
> 
>    I think "farm" can be ready for .4.0, the new kv-store which will
> support
> 
>  - cluster wide snapshot. (both customized time and at the point of
> epoch change)
> 
>  - node-wide data sharing for snapshot objects with the same content. so
> snapshoting is very cheap operation.
> 
>  - support 'collie checkout epoch' to restore fully to the state of
> history epoch and customized time.
> 
>  - differential data change between subsequent epoches (for faster
> nested recovery, that node failure happens at recovery stage)
> 
>  - auto checksumed snapshot objects
> 
>  - no stale objects that are found in current implementation, that will
> waste storage a lot.

Thanks, looks great to me.  My concern is only that these features
might cause performance degradation or make Sheepdog codes
complicated.  I'm looking forward to your patches. :)

Kazutaka

> 
> Thanks,
> Yuan
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