<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">You will likely have to write a nova-volume/cinder backend to talk to the dell SAN directly. You could probably base it on the HP lefthand san code and get something working pretty quickly:<div><br></div><div><br></div><div><a href="https://github.com/openstack/nova/blob/master/nova/volume/san.py">https://github.com/openstack/nova/blob/master/nova/volume/san.py</a></div><div><br></div><div>Vish</div><div><br><div><div>On Aug 2, 2012, at 2:31 AM, Bilel Msekni <<a href="mailto:skible@hotmail.fr">skible@hotmail.fr</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
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255); display: inline !important; float: none; ">Hi all,</span><br style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
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255); ">
<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
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-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); display: inline !important; float: none; ">I have a question
relating to nova-volume, and provisioning block devices as storage
for VMs. As I understand it from the documentation, nova-volume
will take a block device with LVM on it, and then become an iSCSI
target to share the logical volumes to compute nodes. I also
understand that there is another process for using an HP lefthand
SAN or solaris iSCSI setup, whereby nova-volume can interact with
APIs for volume creation on the SAN itself.</span><br style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
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255); ">
<br style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
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255); ">
<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); display: inline !important; float: none; ">I have a dell
iSCSI SAN, and I can see that I'd be able to mount a LUN from the
SAN on my nova-volume node, then go through the documented process
of creating an LVM on this LUN and having nova-volume re-share it
over iSCSI to the compute nodes, but what I'm wondering is whether
I can have the compute nodes simple connect to the iSCSI SAN to
access these volumes (which would be created and managed by
nova-volume still), rather than connect each compute node to the
iSCSI target which nova-volume presents? I imagine with this
setup, I could take advantage of the SAN's HA and performance
benefits.</span><br style="color: rgb(34, 34, 34); font-family:
arial, sans-serif; font-size: 13px; font-style: normal;
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255); ">
<br style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
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orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
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-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); ">
<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); display: inline !important; float: none; ">Hope that makes
sense..</span>
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