Open Stack

Yes, VNX snapshot should work with thick LUN.

Thanks,
Xing


From: mad Engineer [mailto:themadengin33r at gmail.com]
Sent: Friday, November 14, 2014 4:31 PM
To: yang, xing
Cc: openstack at lists.openstack.org
Subject: Re: [Openstack] cinder and EMC VNX storage

Thank you Xing ,
can snapshot work with thick LUN? can i just buy snapshot license and make it work

Thanks

On Sat, Nov 15, 2014 at 1:58 AM, yang, xing <xing.yang at emc.com<mailto:xing.yang at emc.com>> wrote:
Hi,

The document you referenced is for the VNX Direct Driver.  If you use the VNX Direct driver, you need the “thin provisioning license” to create thin LUNs.  If you are only creating thick LUNs, you can skip this license.  You need the VNX Snapshot license to create a snapshot in Cinder.

I’m not sure why the licenses are not required when you are using VMWare cluster.  Maybe they are thick LUNs only and snapshots are snapview snapshots instead of VNX snapshots.

You need to have cinder-volume running, either on a separate node or on the controller node in order to use a cinder driver.

Thanks,
Xing



From: mad Engineer [mailto:themadengin33r at gmail.com<mailto:themadengin33r at gmail.com>]
Sent: Friday, November 14, 2014 12:44 PM
To: openstack at lists.openstack.org<mailto:openstack at lists.openstack.org>
Subject: [Openstack] cinder and EMC VNX storage

Hi all,
        Currently i am using icehouse release with KVM compute nodes and a server with cinder-volume installed as my storage server,(it uses iscsi to export lvm disks to compute nodes.)
Now i got a chance to TEST EMC storage ie EMC VNX for couple of days which is currently used by our vmware cluster .

but as per icehouse documentation

You must activate VNX Snapshot and Thin Provisioning license for the array.

But i don't have separate license for this and i am sure vmware was using this array without any issue (not managed by openstack)

1.Do i really need this license to make it work with cinder (if i don't care about thin provisioning).
2.Isn't it possible to use qcow2 image format with EMC VNX and use its native snapshot feature?
3.Do i still need to keep a separate node with cinder-volume installed or can my controller node with cinder-api running can directly communicate?


i am not aware whether there is any separate mailing list for cinder


Thanks




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