在 Alpine/Ubuntu 的 VM 加大硬碟空間(LVM)

root@claude-code-194:/var/lib/docker# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               ubuntu-vg
  PV Size               <58.00 GiB / not usable 0
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              14847
  Free PE               0
  Allocated PE          14847
  PV UUID               KMzN5K-KMoy-W7I1-wJ6p-TItW-VrCb-0arRqF
  
root@claude-code-194:/var/lib/docker# vgdisplay
  --- Volume group ---
  VG Name               ubuntu-vg
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  2
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               <58.00 GiB
  PE Size               4.00 MiB
  Total PE              14847
  Alloc PE / Size       14847 / <58.00 GiB
  Free  PE / Size       0 / 0
  VG UUID               hbyja8-nOz5-rc2t-ttAG-M8O9-JO9H-Xf0FoB

root@claude-code-194:/var/lib/docker# lvdisplay
  --- Logical volume ---
  LV Path                /dev/ubuntu-vg/ubuntu-lv
  LV Name                ubuntu-lv
  VG Name                ubuntu-vg
  LV UUID                wn0ndd-X8KW-zqc2-tH8M-amTr-uAOT-a4qQIY
  LV Write Access        read/write
  LV Creation host, time ubuntu-server, 2025-07-25 11:41:57 +0800
  LV Status              available
  # open                 1
  LV Size                <58.00 GiB
  Current LE             14847
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:0
  
root@claude-code-194:/var/lib/docker# df -h
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              794M  1.1M  793M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   57G   54G     0 100% /
tmpfs                              3.9G     0  3.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          2.0G  197M  1.6G  11% /boot
tmpfs                              794M   16K  794M   1% /run/user/1000

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