LVM调整VG和PV

查看LVM的空间分配。

root@14900:~# pvs -v --segments
  PV             VG        Fmt  Attr PSize   PFree   Start  SSize LV   Start Type   PE Ranges                   
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g      0  5960 root     0 linear /dev/nvme0n1p3:0-5959       
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g   5960  2384 var      0 linear /dev/nvme0n1p3:5960-8343    
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g   8344   476 tmp      0 linear /dev/nvme0n1p3:8344-8819    
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g   8820 40528          0 free                               
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g  49348 40284 home     0 linear /dev/nvme0n1p3:49348-89631  
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g  89632 46184          0 free                               
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g 135816 58040 root  5960 linear /dev/nvme0n1p3:135816-193855
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g 193856 44360          0 free    

把碎片移动到一起。

root@14900:~# pvmove --alloc anywhere /dev/nvme0n1p3:49348-89631 /dev/nvme0n1p3:8820-49103
  /dev/nvme0n1p3: Moved: 0.05%
  /dev/nvme0n1p3: Moved: 22.59%
  /dev/nvme0n1p3: Moved: 43.02%
  /dev/nvme0n1p3: Moved: 50.59%
  /dev/nvme0n1p3: Moved: 57.23%
  /dev/nvme0n1p3: Moved: 63.64%
  /dev/nvme0n1p3: Moved: 70.08%
  /dev/nvme0n1p3: Moved: 76.46%
  /dev/nvme0n1p3: Moved: 84.33%

最后全部连在一起了：

root@14900:~# pvs -v --segments
  PV             VG        Fmt  Attr PSize   PFree   Start  SSize  LV   Start Type   PE Ranges                  
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g      0   5960 root     0 linear /dev/nvme0n1p3:0-5959      
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g   5960   2384 var      0 linear /dev/nvme0n1p3:5960-8343   
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g   8344    476 tmp      0 linear /dev/nvme0n1p3:8344-8819   
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g   8820  40284 home     0 linear /dev/nvme0n1p3:8820-49103  
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g  49104  58040 root  5960 linear /dev/nvme0n1p3:49104-107143
  /dev/nvme0n1p3 debian-vg lvm2 a--  930.53g 512.00g 107144 131072          0 free    

# 打开 parted 工具
parted /dev/nvme0n1

# 查看当前分区信息
(parted) print

# 调整分区 3 的结束位置到 200GB
(parted) resizepart 3 200GB

# 确认更改并退出 parted 工具
(parted) print
(parted) quit

# 更新分区表
partprobe