<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-IN" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to fix a race condition between imagebackend and imagecache in nova (openstack) while creating an instance using qcow2 image backend. On creating a qcow2 image libvirt stores the base/backing file path reference while copying
the image at instance disk info. While spawning the instance nova usage this base file reference as a backing file to launch instance.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When base file is created in nova image cache directory its owner is set to openstack (a nova user) but on launching the instance from guest.launch, libvirt updates the base/backing file owner from openstack to libvirt-qemu which causes
permission error if we try to use that base file later.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can someone please help me to understand why libvirt is updating the owner of base file stored in image cache directory, is it a bug in libvirt or the expected behaviour?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks & Regards,<o:p></o:p></p>
<p class="MsoNormal">Ankit Agrawal<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br clear="both">
______________________________________________________________________<BR>
Disclaimer: This email and any attachments are sent in strictest confidence<BR>
for the sole use of the addressee and may contain legally privileged,<BR>
confidential, and proprietary data. If you are not the intended recipient,<BR>
please advise the sender by replying promptly to this email and then delete<BR>
and destroy this email and any attachments without any further use, copying<BR>
or forwarding.<BR>
</body>
</html>