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<DIV><FONT color=#000080 size=2 face=Verdana>Hi Alex,</FONT></DIV>
<DIV><FONT color=#000080></FONT> </DIV>
<DIV><FONT color=#000080>Thanks for your flow chart. But I'm stuck in getting
Storage Pool here.</FONT></DIV>
<DIV><FONT color=#000080>I try to get StoragePoolPtr by using something
like</FONT></DIV>
<DIV> </DIV>
<DIV> int num = virConnectNumOfStoragePools( conn );</DIV>
<DIV> </DIV>
<DIV>it truns out num = 0;</DIV>
<DIV> </DIV>
<DIV>I think I missed something and missunderstand the Storage Pool &
Storage Volume. So I refer to the <A
href="http://libvirt.org/archstorage.html">http://libvirt.org/archstorage.html</A> and
<A
href="http://libvirt.org/guide/html/">http://libvirt.org/guide/html/</A> ,
but guide book about storage is in status "TBD". So, is there some
tutorial or guideline I can follow to get the Storage Ptr and then get the XML
description and finally clone one?</DIV>
<DIV> </DIV>
<DIV>Thank you</DIV>
<DIV> </DIV>
<DIV>Regards</DIV>
<DIV><FONT color=#000080 size=2 face=Verdana></FONT> </DIV>
<DIV><FONT color=#000080 size=2 face=Verdana></FONT> </DIV>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana>2010-11-14 </FONT></DIV><FONT
color=#000080 size=2 face=Verdana>
<HR style="WIDTH: 100px" align=left color=#b5c4df SIZE=1>
</FONT>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana>Lancer </FONT></DIV>
<HR color=#b5c4df SIZE=1>
<DIV><FONT size=2 face=Verdana><STRONG>发件人：</STRONG> ajia </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>发送时间：</STRONG> 2010-11-12 10:40:27
</FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>收件人：</STRONG> 黄亮 </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>抄送：</STRONG> libvir-list </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>主题：</STRONG> Re: [libvirt] Is there an
API for clone? </FONT></DIV>
<DIV><FONT size=2 face=Verdana></FONT> </DIV>
<DIV><FONT size=2 face=Verdana>On 11/12/2010 02:07 AM, 黄亮 wrote:
<BLOCKQUOTE cite=mid:201011121007066565474@163.com type="cite">
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<DIV><FONT color=#000080 size=2 face=Verdana>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 color=#c0c0c0 size=2 face=Verdana>2010-11-12 </FONT></DIV><FONT
color=#000080 size=2 face=Verdana>
<HR style="WIDTH: 100px" align=left color=#b5c4df SIZE=1>
</FONT>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana>Lancer </FONT></DIV>
<HR color=#b5c4df SIZE=1>
<DIV><FONT size=2 face=Verdana><STRONG>发件人：</STRONG> Alex Jia </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>发送时间：</STRONG> 2010-11-10
13:28:21 </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>收件人：</STRONG> 黄亮 </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>抄送：</STRONG> libvir-list </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>主题：</STRONG> Re: [libvirt] Is there an
API for clone? </FONT></DIV>
<DIV></DIV>
<DIV><FONT size=2 face=Verdana>
<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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href="https://www.redhat.com/mailman/listinfo/libvir-list">https://www.redhat.com/mailman/listinfo/libvir-list</A></DIV>
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