LVM扩容

向右看齐 2022-06-04 08:20 262阅读 0赞

1.为VM添加硬盘空间，名字和大小自定义。  
![这里写图片描述][SouthEast]

2.登陆到console，确定要扩充的挂载点。

[root@el5enhance16 ~]# df
    Filesystem 1K-???? ??? ??????? ??????? 
    ?dev/mapper/VolGroup00-LogVol00
    24218752 21835704 1132952 96% / 
    /dev/xvda1 101086 13369 82498 14% 
    /boot tmpfs 1048664 0 1048664 0% /dev/shm

3.确认硬盘的分区方式，确定是使用LVM分区方式，并且能看到我们刚才添加的硬盘/dev/xvdb

[root@el5enhance16 ~]# fdisk -l
    Disk /dev/xvdd: 258 MB, 258160640 bytes
    255 heads, 63 sectors/track, 31 cylinders
    Units = ???????of 16065 * 512 = 8225280 bytes
    
    ??????? /dev/xvdd ?????????????????????
    
    ?isk /dev/xvda: 26.8 GB, 26843545600 bytes 
    255 heads, 63 sectors/track, 3263 cylinders
    Units = ???????of 16065 * 512 = 8225280 bytes
    
    ?????? Boot Start End Blocks Id System
    
    /dev/xvda1 * 1 13 104391 83 Linux
    /dev/xvda2 14 3263 26105625 8e Linux LVM
    
    Disk /dev/xvdb: 10.7 GB, 10737418240 bytes 
    255 heads, 63 sectors/track, 1305 cylinders 
    Units = ???????of 16065 * 512 = 8225280 bytes
    ??????? /dev/xvdb ?????????????????????

4.添加PV

root@el5enhance16 ~]# pvcreate /dev/xvdb
    Physical volume "/dev/xvdb" successfully created

5.查看刚才增加的PV

[root@el5enhance16 ~]# pvdisplay

6.下面就是将新添的物理卷加入到已有的逻辑卷组中

[root@el5enhance16 ~]# vgextend /dev/VolGroup00 /dev/xvdb 
    Volume group "VolGroup00" successfully extended

7.查看卷组的空间

[root@el5enhance16 ~]# vgdisplay

8.查看下分区，确定要扩容的分区

[root@el5enhance16 ~]# lvdisplay

9.开始扩容的操作

[root@el5enhance16 ~]# lvextend -L +9G /dev/VolGroup00/LogVol00
    
    Extending logical volume LogVol00 to 32.84 GB Logical volume LogVol00 successfully resized

10.使增加的容量生效

[root@el5enhance16 ~]# resize2fs /dev/VolGroup00/LogVol00

11.最后用df在看下现在的空间情况

[root@el5enhance16 ~]# df

[SouthEast]: /images/20220604/6071b79a91674d34b9faec8ec53478e3.png