我嘗試使用下面的代碼來創建有功/無虛擬機上的KVM管理程序的快照:如何使用libvirt創建VM的快照?
它看起來像xmlDesc可是沒有足夠的信息來創建既沒有運行,也沒有空閒的虛擬機或者也可以是快照不同?
在傳遞給方法之前,我是否必須修改xml轉儲? 或快照需要一些單獨的目標img文件?
有沒有人有任何想法如何解決這個問題?
package org.vmclient;
import org.libvirt.Connect;
import org.libvirt.Domain;
import org.libvirt.DomainInfo;
import org.libvirt.DomainSnapshot;
import org.libvirt.LibvirtException;
public class Test {
public static void main(String[] args) {
// create and initialize variables
Connect connect = null;
Domain domain = null;
int numberOfSnaps;
DomainSnapshot domainSnapshot;
/*
* do NOT change! Create a connection
*/
try {
connect = new Connect("qemu:///system");
} catch (LibvirtException e) {
System.out.println("exception caught:" + e);
System.out.println(e.getError());
}
/*
* Perform an activity
*/
try {
//create a snapshot
domain = connect.domainLookupByName("Ubuntu");
/*
DomainInfo di = new DomainInfo();
di = domain.getInfo();
System.out.println(di);
*/
numberOfSnaps = domain.snapshotNum();
System.out.println(numberOfSnaps);
//1. get xmlDesc of current machine
String xmlDesc = domain.getXMLDesc(0);
//2. check if xmlDesc isnt empty
System.out.println(xmlDesc);
//3. pass xmlDesc to create a snapshot of the machine
//try {
domainSnapshot = domain.snapshotCreateXML(xmlDesc);
//}catch(LibvirtException e){
//System.out.println(e.getMessage());
//}
System.out.println("working ??");
//4. check if snap was created
numberOfSnaps = domain.snapshotNum();
System.out.println(numberOfSnaps);
} catch (LibvirtException e) {
System.out.println("exception caught:" + e);
System.out.println(e.getError());
}
}//end main
}//end Test.java
的錯誤消息:
libvir: Domain Snapshot error : XML error: domainsnapshot
exception caught:org.libvirt.LibvirtException: XML error: domainsnapshot
level:VIR_ERR_ERROR
code:VIR_ERR_XML_ERROR
domain:VIR_FROM_DOMAIN_SNAPSHOT
hasConn:false
hasDom:false
hasNet:false
message:XML error: domainsnapshot
str1:XML error: %s
str2:domainsnapshot
str3:null
int1:-1
int2:-1
這沒有任何意義 – 2013-04-10 08:04:38
是的,它的作用。這就是libvirt的工作原理。 – cd1 2014-11-18 22:49:18