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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">In my setup I have one Ceph cluster but 2 different pools, one for images which is on SATA disks and one for volumes which is on faster
SAS disks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Given this setup I don’t imagine there is any way to thin provision an image to a volume? It would need to be a complete copy from
one pool to another, yes?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I’m certainly not in a position to be able to contribute to a code change, I’m surprised this hasn’t been done already, it seems terribly
inefficient to have to copy the images twice?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Cory<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Avishay Traeger [mailto:avishay@stratoscale.com]
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<b>Sent:</b> Monday, 12 October 2015 9:55 PM<br>
<b>To:</b> Cory Hawkless <Cory@Hawkless.id.au><br>
<b>Cc:</b> openstack@lists.openstack.org<br>
<b>Subject:</b> Re: [Openstack] Volume from image question<o:p></o:p></span></p>
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<p class="MsoNormal">The flow for all images for this process is to download from Glance to a temporary file, and then write to volume. This is not necessary for raw images, but that optimization has not been done. I did leave a comment about that in the
code though 2.5 years ago, but never implemented it - you can give it a go if you'd like :-)<o:p></o:p></p>
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<p class="MsoNormal">Are you using two different Ceph clusters, one for images and one for volumes? Otherwise it should just be doing a thin provisioned clone of the image (no download, no temp space, no upload).<o:p></o:p></p>
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<p class="MsoNormal">On Mon, Oct 12, 2015 at 12:27 PM, Cory Hawkless <<a href="mailto:Cory@hawkless.id.au" target="_blank">Cory@hawkless.id.au</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">When creating a volume from an image(Using Horizon), why does the Cinder server need to do what appears to be a conversion of the image before it can create the volume?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">All of my images in Glance are uploaded in RAW format, images and volumes are stored in Ceph.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The reason I know the images are being processed on my glance server is because it runs out of disk space when trying to make volumes from large images and the process fails. I
can see the temporary file in /var/lib/cinder/conversion<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Is it not possible to have glance simply copy the image form the images store into the volumes store? I am going to regularly be creating new Windows Server instances, so it would
take quite some time for a 20gb image to be processed by Cinder before it can be uploaded into Ceph.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Cory<o:p></o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;color:#666666">Avishay Traeger, PhD</span></b><o:p></o:p></p>
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<p class="MsoNormal"><i><span style="color:#666666">System Architect</span></i><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="color:#666666">Mobile: </span>+972 54 447 1475<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#666666">E-mail: <a href="mailto:avishay@stratoscale.com" target="_blank"><span style="color:#1155CC">avishay@stratoscale.com</span></a></span><o:p></o:p></p>
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