On Fri, May 17, 2013 at 4:11 AM, Edison Su <edison...@citrix.com> wrote:
> Hi all,
>      Min and I worked on object_store branch during the last one and half 
> month. We made a lot of refactor on the storage code, mostly related to 
> secondary storage, but also on the general storage framework. The following 
> goals are made:
>
> 1.       An unified storage framework. Both secondary storages(nfs/s3/swift 
> etc) and primary storages will share the same plugin model, the same 
> interface. Add any other new storages into cloudstack will much easier and 
> straightforward.
>
> 2.       The storage interface  between mgt server and resource is unified, 
> currently there are only 5 commands send out by mgt server: 
> copycommand/createobjectcommand/deletecommand/attachcommand/dettachcommand, 
> and each storage vendor can decode/encode all the 
> entities(volume/snapshot/storage pool/ template etc) by its own.
>
> 3.       NFS secondary storage is not explicitly depended on by other 
> components. For example, when registering template into S3, template will be 
> write into S3 directly, instead of storing into nfs secondary storage, then 
> push to S3. If s3 is used as secondary storage, then nfs storage will be used 
> as cache storage, but from other components point of view, cache storage is 
> invisible. So, it's possible to make nfs storage as optional if s3 is used 
> for certain hypervisors.
> The detailed FS is at 
> https://cwiki.apache.org/confluence/display/CLOUDSTACK/Storage+Backup+Object+Store+Plugin+Framework
> The test we did:
>
> 1.       We modified marvin to use new storage api
>
> 2.       Test_volume and test_vm_life_cycle, test_template under smoke test 
> folder are executed against xenserver/kvm/vmware and devcloud, some of them 
> are failed, it's partly due to bugs introduced by our code, partly master 
> branch itself has issue(e.g. resizevolume doesn't work). We want to fix these 
> issues after merging into master.
>
> The basic follow does work: create user vm, attach/detach volume, register 
> template, create template from volume/snapshot, take snapshot, create volume 
> from snapshot.
>   It's a huge change, around 60k LOC patch, to review the code, you can try: 
> git diff master..object_store, will show all the diff.
>   Comments/feedback are welcome. Thanks.
>
>


Given the amount of change, can we get at least a BVT run against your
branch done before merge?

--David

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