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On 11/12/2010 02:07 AM, 黄亮 wrote:
<blockquote cite="mid:201011121007066565474@163.com" type="cite">
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<div><font face="Verdana" size="2" color="#000080">Hi Alex</font></div>
<div> </div>
<div><font color="#000080">Thank you for your reply.</font></div>
<div><font color="#000080">I just wanna make sure I'm not
misunderstanding, virStorageVolGetXMLDesc &
virStorageVolCreateXMLFrom together can do the clone process, am I
right?</font></div>
</blockquote>
In fact, libvirt will call a group of APIs to complete vol-clone
operation, you can track the whole calling process, it looks like this:<br>
virsh vol-clone
<vol-key> <newname><br>
|<br>
V<br>
virConnectOpenAuth<br>
|<br>
V<br>
virStorageVolLookupByKey<br>
|<br>
V<br>
virStoragePoolLookupByVolume ('default' is default pool)<br>
|<br>
V<br>
virStorageVolGetXMLDesc<br>
|<br>
V<br>
virStorageVolCreateXMLFrom<br>
|<br>
V<br>
virStorageVolGetName (twice)<br>
|<br>
V<br>
virStorageVolFree (twice) <br>
|<br>
V<br>
virStoragePoolFree<br>
|<br>
V<br>
virConnectClose<br>
<br>
<br>
Alex<br>
<blockquote cite="mid:201011121007066565474@163.com" type="cite">
<div> </div>
<div><font color="#000080">Regards</font></div>
<div> </div>
<div> </div>
<div><font face="Verdana" size="2" color="#c0c0c0">2010-11-12 </font></div>
<font face="Verdana" size="2" color="#000080">
<hr style="width: 100px;" size="1" align="left" color="#b5c4df"></font>
<div><font face="Verdana" size="2" color="#c0c0c0">Lancer </font></div>
<hr size="1" color="#b5c4df">
<div><font face="Verdana" size="2"><strong>发件人：</strong> Alex Jia </font></div>
<div><font face="Verdana" size="2"><strong>发送时间：</strong> 2010-11-10
13:28:21 </font></div>
<div><font face="Verdana" size="2"><strong>收件人：</strong> 黄亮 </font></div>
<div><font face="Verdana" size="2"><strong>抄送：</strong> libvir-list </font></div>
<div><font face="Verdana" size="2"><strong>主题：</strong> Re: [libvirt]
Is there an API for clone? </font></div>
<div> </div>
<div><font face="Verdana" size="2">
<div>Hi lancer,</div>
<div>As Osier said, libvirt hasn't a independent API for cloning an</div>
<div>existing guest, instead of using virStorageVolGetXMLDesc API to </div>
<div>get a guest volume xml description and then calling </div>
<div>virStorageVolCreateXMLFrom API to clone a new volume.</div>
<div>For python-virtinst component, you may use virt-clone to implement</div>
<div>this, for libvirt component, you may directly use python binding</div>
<div>API or virsh tool 'vol-clone' to implement it.</div>
<div>I hope it's helpful for you.</div>
<div>- Alex</div>
<div>----- Original Message -----</div>
<div>From: "黄亮" <a class="moz-txt-link-rfc2396E" href="mailto:lancerhuang@163.com"><lancerhuang@163.com></a></div>
<div>To: "libvir-list" <a class="moz-txt-link-rfc2396E" href="mailto:libvir-list@redhat.com"><libvir-list@redhat.com></a></div>
<div>Sent: Wednesday, November 10, 2010 9:30:28 AM GMT +08:00 Beijing / Chongqing / Hong Kong / Urumqi</div>
<div>Subject: [libvirt] Is there an API for clone?</div>
<div>Hi, guys </div>
<div>I know there is a command "virt-clone", but I couldn't find the equivalent API here : <a class="moz-txt-link-freetext" href="http://libvirt.org/html/libvirt-libvirt.html">http://libvirt.org/html/libvirt-libvirt.html</a> </div>
<div>So, is there an API to clone an existing VM or not? </div>
<div>Thank you! </div>
<div>Regards </div>
<div>2010-11-10 </div>
<div>Lancer </div>
<div>--</div>
<div>libvir-list mailing list</div>
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<div>__________ Information from ESET Smart Security, version of virus signature database 5605 (20101109) __________</div>
<div>The message was checked by ESET Smart Security.</div>
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</font></div>
</blockquote>
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