====== 在 Alpine 的 VM 加大硬碟空間(LVM) ======
  * 環境 : alpine3 + lvm 
  * 情境 : 將原本 16G 虛擬硬碟擴大為 36G

===== 處理程序 =====
  - 先在 VM 管理介面將虛擬硬碟加大 Exp. PVE 
    - 選要加大的虛擬硬碟 Exp. Hard Disk(scsi)
    - 點 Disk Action -> Resize -> 20 (因為原本有 16G 所以增加 20G 就可以變成 36G)  
  - 進入 alpine 安裝必要的工具 <cli>
apk add e2fsprogs-extra
</cli>
  - fdisk /dev/sda 增加 /dev/sda3 ++看增加後的結果|<cli>
pve-wiki:~# fdisk /dev/sda

The number of cylinders for this disk is set to 36864.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p
Disk /dev/sda: 36 GB, 38654705664 bytes, 75497472 sectors
36864 cylinders, 64 heads, 32 sectors/track
Units: sectors of 1 * 512 = 512 bytes

Device  Boot StartCHS    EndCHS        StartLBA     EndLBA    Sectors  Size Id Type
/dev/sda1 *  1,0,1       300,63,32         2048     616447     614400  300M 83 Linux
/dev/sda2    301,0,1     1023,63,32      616448   33554431   32937984 15.7G 8e Linux LVM
/dev/sda3    1023,63,32  1023,63,32    33554432   75497471   41943040 20.0G 8e Linux LVM
</cli>++
  - pvcreate /dev/sda3 -> 將 /dev/sda3 變成可被加入 lvm 的硬碟
  - vgdisplay 看目前 vg 狀況 -> 只有一個 vg0
  - vgextend vg0 /dev/sda3 -> 將 /dev/sda3 加入 vg0
  - vgdisplay vg0 <- 可看到 vg0 的 Free PE/Size <20G
  - lvextend -l +100%FREE /dev/vg0/lv_root -> 將所有可用空間都擴展到 lv_root 
  - vgdisplay vg0 <- 可看到 vg0 的 Free PE/Size 0/0
  - resize2fs /dev/vg0/lv_root <- 讓增加的 20G 生效
  - df -h 就可以看到 / 已經變成 33.2G

===== 快速執行命令 =====
  * <cli>
pvcreate /dev/sda3
vgextend vg0 /dev/sda3
lvextend -l +100%FREE /dev/vg0/lv_root
resize2fs /dev/vg0/lv_root
</cli>
    * ++看執行操作訊息|<cli>
openvas-28:~# pvcreate /dev/sda3
  Physical volume "/dev/sda3" successfully created.
openvas-28:~# vgextend vg0 /dev/sda3
  Volume group "vg0" successfully extended
openvas-28:~# lvextend -l +100%FREE /dev/vg0/lv_root
  Size of logical volume vg0/lv_root changed from 27.84 GiB (7128 extents) to <87.84 GiB (22487 extents).
  Logical volume vg0/lv_root successfully resized.
openvas-28:~# resize2fs /dev/vg0/lv_root
resize2fs 1.47.0 (5-Feb-2023)
Filesystem at /dev/vg0/lv_root is mounted on /; on-line resizing required
old_desc_blocks = 4, new_desc_blocks = 11
The filesystem on /dev/vg0/lv_root is now 23026688 (4k) blocks long.
</cli>++

{{tag>vmdisk resize alpine lvm}}