通过PVE搭建虚拟机,系统盘只有30G,发现使用的时候已经不足,需要进行扩容,
虚拟机关机状态,在PVE增加磁盘大小之后,虚机开机之后,还需要在虚拟机里面进行扩容操作
开机检查磁盘大小
lsblk
- [root@localhost ~]# fdisk -l
- Disk /dev/vda: 132 GiB, 141733920768 bytes, 276824064 sectors
- Units: sectors of 1 * 512 = 512 bytes
- Sector size (logical/physical): 512 bytes / 512 bytes
- I/O size (minimum/optimal): 512 bytes / 512 bytes
- Disklabel type: dos
- Disk identifier: 0x79cee493
-
- Device Boot Start End Sectors Size Id Type
- /dev/vda1 * 2048 2099199 2097152 1G 83 Linux
- /dev/vda2 2099200 67108863 65009664 31G 8e Linux LVM
-
-
- Disk /dev/mapper/cs-root: 29 GiB, 31079792640 bytes, 60702720 sectors
- Units: sectors of 1 * 512 = 512 bytes
- Sector size (logical/physical): 512 bytes / 512 bytes
- I/O size (minimum/optimal): 512 bytes / 512 bytes
-
-
- Disk /dev/mapper/cs-swap: 2.1 GiB, 2202009600 bytes, 4300800 sectors
- Units: sectors of 1 * 512 = 512 bytes
- Sector size (logical/physical): 512 bytes / 512 bytes
- I/O size (minimum/optimal): 512 bytes / 512 bytes
开始扩容
1.创建一个新的分区
依次输入以下指令
- n [添加分区]
- p [主分区]
- 3 [分区号,回车默认也是3]
- 默认 [直接回车]
- 默认 [直接回车]
- w [保存分区]
- [root@localhost ~]# fdisk /dev/vda
-
- Welcome to fdisk (util-linux 2.32.1).
- Changes will remain in memory only, until you decide to write them.
- Be careful before using the write command.
-
-
- Command (m for help): n
- Partition type
- p primary (2 primary, 0 extended, 2 free)
- e extended (container for logical partitions)
- Select (default p): p
- Partition number (3,4, default 3):
- First sector (67108864-276824063, default 67108864):
- Last sector, +sectors or +size{K,M,G,T,P} (67108864-276824063, default 276824063):
-
- Created a new partition 3 of type 'Linux' and of size 100 GiB.
-
- Command (m for help): w
- The partition table has been altered.
- Syncing disks.
可以看到新的分区已经出现了
2.将vda3分区初始化为物理卷
- partprobe
- pvcreate /dev/vda3
3.查看跟分区所在的卷组信息
- vgdisplay
- # vgs
4.扩容cs卷组
vgextend cs /dev/vda3
5.扩容文件系统
lvextend -l +100%FREE /dev/mapper/cs-root
- [root@localhost ~]# pvdisplay
- --- Physical volume ---
- PV Name /dev/vda2
- VG Name cs
- PV Size <31.00 GiB / not usable 3.00 MiB
- Allocatable yes (but full)
- PE Size 4.00 MiB
- Total PE 7935
- Free PE 0
- Allocated PE 7935
- PV UUID Oaojfu-XAyd-ick0-U7nZ-2YFt-VBUk-FGgStv
-
- --- Physical volume ---
- PV Name /dev/vda3
- VG Name cs
- PV Size 100.00 GiB / not usable 4.00 MiB
- Allocatable yes (but full)
- PE Size 4.00 MiB
- Total PE 25599
- Free PE 0
- Allocated PE 25599
- PV UUID 597ofc-wiTD-8lM3-h2JL-fXlR-alFZ-f12G2n
6.同步文件系统
xfs_growfs /