C+libvirt獲取KVM存儲池信息

     分享一段代碼，可以獲取指定虛擬化宿主機器上的存儲池信息，如：存儲池名稱、存儲池容量、存儲池狀態、存儲池可用、總計以及已使用容量，代碼如下：

　

#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);
	}
}

執行後的效果如下：

[root@kvm　poolstatus]# ./t 
PoolName:[default]
[2][52844687360][26866851840][25977835520]
PoolName:[poolB]
[2][485150105600][107614916608][377535188992]