在 Alpine 的 VM 加大硬碟空間

這是本文件的舊版！

環境 : alpine3 + lvm
情境 : 將原本 16G 虛擬硬碟擴大為 36G

先在 VM 管理介面將虛擬硬碟加大 Exp. PVE
1. 選要加大的虛擬硬碟 Exp. Hard Disk(scsi)
2. 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
```
apk add e2fsprogs-extra
```

fdisk /dev/sda 增加 /dev/sda3 看增加後的結果

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