Atitit 查看目录与分区空间占用原理
查看目录空间就是查看所在分区空间的占用
[root@lenovo ~]# df -h /elk
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/cl-root 50G 27G 24G 53% /
Java的file File.listRoots(); 貌似列出的当前用户root的主目录所在分区 ，只有几十g空间
[root@lenovo ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/cl-root 50G 27G 24G 54% /
devtmpfs 32G 0 32G 0% /dev
tmpfs 32G 1.5M 32G 1% /dev/shm
tmpfs 32G 100M 32G 1% /run
tmpfs 32G 0 32G 0% /sys/fs/cgroup
/dev/sda1 1014M 174M 841M 18% /boot
/dev/mapper/cl-home 849G 328G 522G 39% /home
package com.attilax.io;
import java.io.File;
import java.util.List;
import java.util.Map;
import javax.swing.filechooser.FileSystemView;
import com.alibaba.fastjson.JSON;
import com.attilax.collection.mapBuilder;
import com.attilax.core.Strutil;
import com.attilax.data.csv.csvService;
import com.attilax.util.cli.SSHHelper;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
//com.attilax.io.SpaceCheck
public class SpaceCheck {
public static void main(String[] args) throws Exception {
List li = spaceinfo();
String linux_password = "cloudhealth";
Map m2=mapBuilder.$().put("os","linux").put("host", "192.168.1.18").put("user", "root").put("pwd", linux_password).build();
SSHHelper helper = new SSHHelper(m2.get("host").toString(), 22,m2.get("user").toString(), m2.get("pwd").toString());
li=new SpaceCheck().spaceinfo_linux(helper);
li=Lists.newArrayList();
li.add("192.168.1.18,root,cloudhealth");
li.add("localhost,root,cloudhealth");
System.out.println(JSON.toJSONString(li,true));
}
public List spaceinfo(String host,String user,String pwd,String os) throws Exception {
if(host.equals("127.0.0.1") || host.equals("localhost"))
{
return spaceinfo();
}
Map m2=mapBuilder.$().put("os","linux").put("host",host).put("user",user).put("pwd", pwd).build();
SSHHelper helper = new SSHHelper(m2.get("host").toString(), 22,m2.get("user").toString(), m2.get("pwd").toString());
return new SpaceCheck().spaceinfo_linux(helper);
}
public List spaceinfo(String host,String user,String pwd) throws Exception {
if(host.equals("127.0.0.1") || host.equals("localhost"))
{
return spaceinfo();
}
Map m2=mapBuilder.$().put("os","linux").put("host",host).put("user",user).put("pwd", pwd).build();
SSHHelper helper = new SSHHelper(m2.get("host").toString(), 22,m2.get("user").toString(), m2.get("pwd").toString());
return new SpaceCheck().spaceinfo_linux(helper);
}
public List spaceinfo_linux(String host,String user,String pwd) throws Exception {
//Object pwd;
//Object user;
Map m2=mapBuilder.$().put("os","linux").put("host",host).put("user",user).put("pwd", pwd).build();
SSHHelper helper = new SSHHelper(m2.get("host").toString(), 22,m2.get("user").toString(), m2.get("pwd").toString());
return new SpaceCheck().spaceinfo_linux(helper);
}
public List spaceinfo_linux(SSHHelper helper) throws Exception {
String cmd="df -h";
String t = helper.getCmdRet(cmd );
List<Map> cmdret=csvService.toTableBySpace_ParseHeader(t);
List li=Lists.newArrayList();
for (Map f : cmdret) {
FileSystemView fsv = FileSystemView.getFileSystemView();
Map m=Maps.newLinkedHashMap();
// m.put("FileSystemView.getSystemDisplayName_driverValumeName",fsv.getSystemDisplayName(f));
// m.put("FileSystemView.getSystemTypeDescription",fsv.getSystemTypeDescription(f));
Object fileys = f.get( "文件系统");
if( Strutil.containsAny(fileys.toString(), "tmpfs overlay shm"))
continue;
m.put("file_getName", fileys);
m.put("file_getPath", f.get("挂载点"));
m.put("file_getAbsolutePath",f.get("挂载点"));
m.put("file_getFreeSpace", getSpaceSizeGM_linux( f.get("可用")));
m.put("file_getUsableSpace",getSpaceSizeGM_linux( f.get("可用")));
m.put("file_getTotalSpace",getSpaceSizeGM_linux( f.get("容量")));
m.put( "used_space",getSpaceSizeGM_linux( f.get("已用")));
li.add(m);
}
return li;
}
private Object getSpaceSizeGM_linux(Object object) {
Map m=Maps.newLinkedHashMap();
String s=object.toString();
if(s.equals("0"))
{
m.put("MB", "0" );
m.put("GB", "0" );
return m;
}
String num_s=(String) object.toString().subSequence(0, s.length()-1);
Double d=Double.parseDouble(num_s);
if(s.endsWith("G"))
{
Double mb=d*1024d;
m.put("MB", String.format("%.2f", mb) );
m.put("GB", String.format("%.2f", d) );
}
if(s.endsWith("M"))
{
Double gb=d/1024d;
m.put("MB", String.format("%.2f", d) );
m.put("GB", String.format("%.2f", gb) );
}
if(s.endsWith("K"))
{
Double gb=d/1024/1024d;
Double mb=d/1024d;
m.put("MB", String.format("%.2f", mb) );
m.put("GB", String.format("%.2f", gb) );
}
if(s.endsWith("0"))
{
Double gb=0d;
m.put("MB", String.format("%.2f", d) );
m.put("GB", String.format("%.2f", gb) );
}
return m;
}
/**
*
* @return
*/
public static List spaceinfo() {
File[] roots = File.listRoots();
List li=Lists.newArrayList();
for (File f : roots) {
FileSystemView fsv = FileSystemView.getFileSystemView();
Map m=Maps.newLinkedHashMap();
m.put("FileSystemView.getSystemDisplayName_driverValumeName",fsv.getSystemDisplayName(f));
m.put("FileSystemView.getSystemTypeDescription",fsv.getSystemTypeDescription(f));
m.put("file_getName", f.getName());
m.put("file_getPath", f.getPath());
m.put("file_getAbsolutePath", f.getAbsolutePath());
m.put("file_getFreeSpace", getSpaceSizeGM( f.getFreeSpace()));
m.put("file_getUsableSpace",getSpaceSizeGM( f.getUsableSpace()));
m.put("file_getTotalSpace",getSpaceSizeGM( f.getTotalSpace()));
m.put( "used_space",getSpaceSizeGM(f.getTotalSpace()-f.getFreeSpace()) );
li.add(m);
// System.out.println(f.getPath());
//System.out.println(file_getName());
// System.out.println("Free space = " + (f.getFreeSpace()/(1024*1024))/1024+"G"); //显示GB大小
// System.out.println("Usable space = " + f.getUsableSpace());
// System.out.println("Total space = " + f.getTotalSpace());
// System.out.println("used space = " + (f.getTotalSpace()-f.getFreeSpace()));
// System.out.println();
}
return li;
}
private static Object getSpaceSizeGM(long freeSpace) {
Map m=Maps.newLinkedHashMap();
double value = (double) freeSpace/(double)(1024*1024*1024);
m.put("GB", String.format("%.2f", value) );
double value2 = (double)freeSpace/(double)(1024*1024);
m.put("MB", String.format("%.2f", value2) );
return m;
}
}