<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Thanks for all your response.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">
<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">So libvirt can support <span style="font-family:arial,sans-serif;font-size:13px">ISCSI LUN, but OpenStack didn't provide such options yet?</span></div>
</div><div class="gmail_extra"><br clear="all"><div><font face="'courier new', monospace">Best Regards<br>-- Ray</font></div>
<br><br><div class="gmail_quote">On Tue, Oct 29, 2013 at 1:11 AM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
The only thing is that you need to create the volumes on your ISCSI backend first, so libvirt can use them, otherwise as a shared storage, works fine. ISCSI always gave me nice speeds compared to NFS<br>
<div class="HOEnZb"><div class="h5"><br>
On Oct 28, 2013, at 10:04, Chris Friesen <<a href="mailto:chris.friesen@windriver.com">chris.friesen@windriver.com</a>> wrote:<br>
<br>
> That works for one client. How do you synchronize access between multiple clients?<br>
><br>
> Also, for iSCSI it looks like libvirt can't create/delete volumes, that needs to be done on the server.<br>
><br>
> Chris<br>
><br>
> On 10/28/2013 10:49 AM, Razique Mahroua wrote:<br>
>> Libvrit does support ISCSI LUN as backends, meaning you can mount the ISCSI block on every compute node and you should be fine<br>
>> - Razique<br>
>><br>
>> On Oct 28, 2013, at 8:54, Chris Friesen <<a href="mailto:chris.friesen@windriver.com">chris.friesen@windriver.com</a>> wrote:<br>
>><br>
>>> On 10/28/2013 09:35 AM, Ray Sun wrote:<br>
>>>> Daniel,<br>
>>>> Thanks for you response. But I am still confusing about use a iscsi<br>
>>>> device, if I want to use it as shared storage, first I need to attach to<br>
>>>> a node as a block storage, then I mount it to other compute nodes using<br>
>>>> NFS. The problem is that this will make a big lost on performance.<br>
>>>> Currently nova already support to create a new VM on ceph RBD, but why<br>
>>>> we can not create it on a block storage?<br>
>>><br>
>>> ceph and NFS are both designed for simultaneous access by multiple clients.<br>
>>><br>
>>> iSCSI is not.<br>
>>><br>
>>> Chris<br>
>>><br>
>>><br>
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><br>
<br>
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