C+libvirt获取KVM存储池信息

     分享一段代码，可以获取指定虚拟化宿主机器上的存储池信息，如：存储池名称、存储池容量、存储池状态、存储池可用、总计以及已使用容量，代码如下：

　

#include <stdio.h>
#include <stdlib.h>
#include <libvirt/libvirt.h>
int main(int argc, char *argv[])
{
	virConnectPtr conn;
	conn = virConnectOpen("qemu:///system");
	if (conn == NULL) {
		fprintf(stderr, "Failed to open connection to qemu:///system\n");
	
	}
		
	virStoragePoolPtr *pPoolList;
	int i;
	int nAllPoolNum = virConnectNumOfStoragePools(conn);
	int nDefinePoolNum = virConnectNumOfDefinedStoragePools(conn);
	char **PoolName = (char **)malloc(sizeof(char*) * (nAllPoolNum));	
	virConnectListStoragePools(conn,PoolName,nAllPoolNum);

	for(i = 0; i < nAllPoolNum; i++)
	{
		printf("PoolName:[%s]\n",PoolName[i]);
		virStoragePoolPtr pPool = malloc(sizeof(virStoragePoolPtr));
		pPool = virStoragePoolLookupByName(conn,PoolName[i]);
		virStoragePoolInfoPtr pinfor= malloc(sizeof(virStoragePoolInfoPtr));
		virStoragePoolGetInfo(pPool,pinfor);
		printf("[%d][%ld][%ld][%ld]\n",pinfor->state,pinfor->capacity,pinfor->allocation,pinfor->available);
	}
}
           

执行后的效果如下：

[[email protected]　poolstatus]# ./t 
PoolName:[default]
[2][52844687360][26866851840][25977835520]
PoolName:[poolB]
[2][485150105600][107614916608][377535188992]