lvm2:location Volume Manage Version 2
linux支援邏輯卷的子產品為dm子產品
dm子產品是将一個或多個底層實體裝置組織成一個邏輯裝置的子產品。
在CentOS中,邏輯卷的裝置檔案為:/dev/dm#
連結檔案為:/dev/mapper/dn# 中
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
lvm的管理工具:pv vg lv
pv管理工具:
pvcreate pvmove pvdispay pvremove pvs
pvcreate /dev/sd# 建立實體卷
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
pvs 檢視所有的pv
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
pvdisplay 各pv的詳細資訊
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
pvmove 将一塊盤的資料移到其它硬碟
pvremove 移除pv
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
vg管理工具: vgcreate vgs vgchange vgremove vgdisplay vgextend
vgcreate -s #M 建立#大小pe的vg
vgcreate 建立vg
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
vgs 顯示vg資訊
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
vgdisplay /dev/MYVG 顯示MYVG具體資訊
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
vgextend VGNAME PV 擴充VG
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
vgreduce VGAME PV 移除vg上的pv,移除之前先要把pv上的資料remove。
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
vgremove VGNAME 移除vg
lv管理工具:lvcreate lvextend lvs lvdisplay lvrename
lvcreate -L #M VGNAME 建立lv卷
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
lvs VGNAME 顯示lv中的資訊
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
lvrename lv new name 重命名lv
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
lvextend -L [+]#[B|M|G] LV 擴充分區大小
resize2fs LV #[M|B|G] 擴充檔案系統大小
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SZkJDMhZjNlJTZwI2YjdjNyM2MzEWYkBDOzYTZjhzYz8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
注意:減少lv分區時,先減小檔案系統大小,再減小分區大小。
原創文章,作者:zs5599,如若轉載,請注明出處:http://www.178linux.com/13229