WirelessLink

ProxmoxVE(PVE) 减小缩减虚拟机硬盘设置的空间大小

Proxmox VE WEB UI上调整虚拟机磁盘大小只能增加，不能减小。
如果想减小空间设置，需要通过命令行调整
即是调整LV逻辑卷的大小，命令操作如下

1> 先通过 lvs 命令查看虚拟机所设置的空间大小

展示如下：

root@pve:~# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
data pve twi-aotz– <10.77t 0.72 0.63
root pve -wi-ao—- 96.00g
snap_vm-100-disk-0_Init pve Vri-a-tz-k 100.00g data vm-100-disk-0 4.82
snap_vm-101-disk-0_Init pve Vri—tz-k 500.00g data vm-101-disk-0
snap_vm-102-disk-0_Docker pve Vri-a-tz-k 500.00g data vm-102-disk-0 1.99
snap_vm-102-disk-0_Init pve Vri-a-tz-k 500.00g data vm-102-disk-0 1.89
snap_vm-102-disk-0_set_timezone pve Vri—tz-k 500.00g data vm-102-disk-0
snap_vm-103-disk-0_Init pve Vri—tz-k 500.00g data
snap_vm-103-disk-0_MariaDB pve Vri—tz-k 500.00g data vm-103-disk-0

2>查看硬盘路径

root@pve:~# lvdisplay

— Logical volume —
LV Path /dev/pve/vm-105-disk-0
LV Name vm-105-disk-0
VG Name pve
LV UUID NC8FS6-aT32-vKvd-Die0-LgDr-FHgS-16UVXd
LV Write Access read/write
LV Creation host, time pve, 2021-09-24 12:03:00 +0800
LV Pool name data
LV Status available
# open 1
LV Size 924.00 GiB
Mapped size 0.87%
Current LE 236544
Segments 1
Allocation inherit
Read ahead sectors auto
– currently set to 256
Block device 253:24

— Logical volume —
LV Path /dev/pve/snap_vm-105-disk-0_Init
LV Name snap_vm-105-disk-0_Init
VG Name pve
LV UUID v5cCKU-Alrq-WnwA-L8dL-jaQp-7D5T-tUz4AA
LV Write Access read only
LV Creation host, time pve, 2021-09-24 12:07:48 +0800
LV Pool name data
LV Thin origin name vm-105-disk-0
LV Status NOT available
LV Size 1.00 TiB
Current LE 262144
Segments 1
Allocation inherit
Read ahead sectors auto

3> 缩减磁盘容量，执行下边的命令将空间大小减小100G

root@pve:~# lvreduce -L -100G /dev/pve/vm-105-disk-0

WARNING: Reducing active and open logical volume to 824.00 GiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce pve/vm-105-disk-0? [y/n]: y
Size of logical volume pve/vm-105-disk-0 changed from 924.00 GiB (236544 extents) to 824.00 GiB (210944 extents).
Logical volume pve/vm-105-disk-0 successfully resized.