Gabriel,<div><br></div><div>There is a folsom-targeted blueprint for #2 at least:
<a href="https://blueprints.launchpad.net/nova/+spec/auto-create-boot-volumes">https://blueprints.launchpad.net/nova/+spec/auto-create-boot-volumes</a> </div><div><br></div><div>--</div><div>Oleg</div><div><br><div class="gmail_quote">
On Sun, May 27, 2012 at 10:51 PM, Gabriel Hurley <span dir="ltr"><<a href="mailto:Gabriel.Hurley@nebula.com" target="_blank">Gabriel.Hurley@nebula.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">To the best of my understanding there are two parts to this, neither of which is fully where it ought to be:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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<u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">It shouldn’t be a required parameter. If you give it a volume with everything it needs and not an image it should try to boot from that without throwing
an exception. Horizon only enforces the requirement because Nova does.<u></u><u></u></span></p>
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<u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">As an optional parameter, specifying an image should allow you to create the instance with that image loaded onto the volume, which is a very important
part of the workflow for creating your own bootable volumes. This feature doesn’t currently exist in Nova, however.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I also don’t know offhand if there are blueprints or bug reports for either of those…<u></u><u></u></span></p>
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<u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>-<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Gabriel<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> openstack-bounces+gabriel.hurley=<a href="mailto:nebula.com@lists.launchpad.net" target="_blank">nebula.com@lists.launchpad.net</a> [mailto:<a href="mailto:openstack-bounces%2Bgabriel.hurley" target="_blank">openstack-bounces+gabriel.hurley</a>=<a href="mailto:nebula.com@lists.launchpad.net" target="_blank">nebula.com@lists.launchpad.net</a>]
<b>On Behalf Of </b>Vishvananda Ishaya<br>
<b>Sent:</b> Saturday, May 26, 2012 8:35 PM<br>
<b>To:</b> Lorin Hochstein<br>
<b>Cc:</b> <a href="mailto:openstack@lists.launchpad.net" target="_blank">openstack@lists.launchpad.net</a> (<a href="mailto:openstack@lists.launchpad.net" target="_blank">openstack@lists.launchpad.net</a>)<br>
<b>Subject:</b> Re: [Openstack] Why is an image required when booting from volume<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">If there is a separate kernel and ramdisk needed for the boot from volume, it is pulled from image properties. Otherwise it is basically useless.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Vish<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On May 26, 2012, at 8:22 AM, Lorin Hochstein wrote:<u></u><u></u></p>
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<p class="MsoNormal"><br>
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<u></u><u></u></p>
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<p class="MsoNormal">I'm trying to figure out boot from volume, both so I can use it and so I can add it to the docs. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"> It seems that when calling "nova boot" or using Horizon, you need to specify an image. Why is that?<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I naively tried to create a volume image by creating a volume and then doing on my volume server:<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">dd if=/tmp/precise-server-cloudimg-amd64-disk1.img of=/dev/nova-volumes/volume-0000000d<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Then I tried this:<u></u><u></u></p>
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<p class="MsoNormal">$ nova boot --flavor 2 --key_name lorin --block_device_mapping /dev/vda=13:::0 test<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Which generated an error:<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Invalid imageRef provided. (HTTP 400)<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">If I try to specify an image, it at least attempts to boot:<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">$ nova boot --flavor 2 --key_name lorin --block_device_mapping /dev/vda=13:::0 --image 7d6923d9-1c13-4405-ba0c-41c7487dd6bc test<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I noticed that the devstack example specifies an image: <a href="https://github.com/openstack-dev/devstack/blob/master/exercises/boot_from_volume.sh" target="_blank">https://github.com/openstack-dev/devstack/blob/master/exercises/boot_from_volume.sh</a>:<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">VOL_VM_UUID=`nova boot --flavor $INSTANCE_TYPE --image $IMAGE --block_device_mapping vda=$VOLUME_ID:::0 --security_groups=$SECGROUP --key_name $KEY_NAME $VOL_INSTANCE_NAME | grep ' id ' | get_field 2`<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Looking at nova/api/openstack/compute/servers.py, it does look like _image_uuid_from_href() is called regardless of whether we are booting from volume or not. What is "--image" used for when booting from volume?<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Take care,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Lorin<u></u><u></u></p>
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<p class="MsoNormal">--<u></u><u></u></p>
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<p class="MsoNormal">Lorin Hochstein<u></u><u></u></p>
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<p class="MsoNormal">Lead Architect - Cloud Services<u></u><u></u></p>
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<p class="MsoNormal">Nimbis Services, Inc.<u></u><u></u></p>
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<p class="MsoNormal"><a href="https://www.nimbisservices.com/" target="_blank">www.nimbisservices.com</a><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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