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That works for one client.  How do you synchronize access between 
multiple clients?

Also, for iSCSI it looks like libvirt can't create/delete volumes, that 
needs to be done on the server.

Chris

On 10/28/2013 10:49 AM, Razique Mahroua wrote:
> Libvrit does support ISCSI LUN as backends, meaning you can mount the ISCSI block on every compute node and you should be fine
> - Razique
>
> On Oct 28, 2013, at 8:54, Chris Friesen <chris.friesen at windriver.com> wrote:
>
>> On 10/28/2013 09:35 AM, Ray Sun wrote:
>>> Daniel,
>>> Thanks for you response. But I am still confusing about use a iscsi
>>> device, if I want to use it as shared storage, first I need to attach to
>>> a node as a block storage, then I mount it to other compute nodes using
>>> NFS. The problem is that this will make a big lost on performance.
>>> Currently nova already support to create a new VM on ceph RBD, but why
>>> we can not create it on a block storage?
>>
>> ceph and NFS are both designed for simultaneous access by multiple clients.
>>
>> iSCSI is not.
>>
>> Chris
>>
>>
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