"Linux Rookie 2" LVM

● LVM Build

1. Divide the physical partition and change the partition ID to 8e

Pvs|pvdisplay Viewing physical volumes

Vgs|vgdisplay Viewing physical volume groups

Lvs|lvdisplay to view logical volume devices

Monitoring commands

Watch-n 1 \

' echo ' = = = Pvinfo = = = "\

;p vs\

; echo "= = = Vginfo = = =" \

; vgs\

; echo "= = = Lvinfo = = =" \

; lvs\

;d f-h/mnt '

Create

PVCREATE/DEV/VDB1 physical partitions into physical volumes

Vgcreate WESTOS/DEV/VDB1 to make a physical volume group of/DEV/VDB1 This physical volume vg0

Lvcreate-l 100m-n lv0 Westos set up vg0 device in lv0 This group-l specify device size-n Specify device name

Mkfs.xfs/dev/westos/lv0

mount/dev/westos/lv0/mnt/

Expansion

Lvextend-l 200m/dev/westos/lv0 Extended LVM device to 200M

Xfs_growfs/dev/westos/lv0 enlarge XFS File system to device size

PVCREATE/DEV/VDB2 add a piece of equipment to PV/DEV/VDB2

Vgextend WESTOS/DEV/VDB2 Add the newly created/DEV/VDB2 to the Westos

Lvextend-l 600m/dev/westos/lv0 Extended LVM device to 600M

Xfs_growfs/dev/westos/lv0 enlarge XFS File system to device size

Capacity reduction

umount/mnt/Uninstalling the device

Mkfs.ext4/dev/westos/lv0 Modify the file system type to Ext

E2fsck-f/dev/westos/lv0 Detection File system

Resize2fs/dev/westos/lv0 100M file system reduced to 100M

mount/dev/westos/lv0/mnt/Mount

Snapshot

umount/mnt/

Lvcreate-l 10m-n lv0-backup-s/dev/westos/lv0

Create a snapshot for/dev/vg0/lv0

-L Specify Snapshot size

-n Specifies the snapshot name

-s Specifies the snapshot template device

mount/dev/westos/lv0-backup/mnt/hanging in the mirror

Delete Step

umount/mnt/

Lvremove/dev/westos/lv0-backup

Lvremove/dev/westos/lv0

Vgremove Westos

Pvremove/dev/vdb1

Fdisk/dev/vdb

D+enter

D+enter

Wq

Partprobe

Script New partition

Vim 1

#!/bin/bash

Fdisk/dev/vdb << End

N

+1g

Wq

End

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"Linux Rookie 2" LVM