2 Unit 5

# # #unit. 5 lvm###

# # #1. LVM Setup

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

[Email protected] ~]# FDISK/DEV/VDB

Welcome to Fdisk (Util-linux 2.23.2).

Changes'll remain in memory only, until the decide to write them.

Be careful before using the Write command.

Device does not contain a recognized partition table

Building a new DOS disklabel with disk identifier 0x9546a42c.

Command (M for help): N

Partition Type:

P Primary (0 primary, 0 extended, 4 free)

E Extended

Select (default P):

Using Default Response P

Partition number (1-4, default 1): 1

First sector (2048-20971519, default 2048):

Using Default Value 2048

Last sector, +sectors or +size{k,m,g} (2048-20971519, default 20971519): +500m

Partition 1 of type Linux and of size MiB is set

Command (M for help): N

Partition Type:

P Primary (1 primary, 0 extended, 3 free)

E Extended

Select (default P):

Using Default Response P

Partition number (2-4, default 2): 2

First sector (1026048-20971519, default 1026048):

Using Default Value 1026048

Last sector, +sectors or +size{k,m,g} (1026048-20971519, default 20971519): +500m

Partition 2 of type Linux and of size MiB is set

Command (M for help): t

Partition Number (2, default): 1

Hex code (type L to list all codes): 8e

Changed type of partition ' Linux ' to ' Linux LVM '

Command (M for help): t

Partition Number (2, default): 2

Hex code (type L to list all codes): 8e

Changed type of partition ' Linux ' to ' Linux LVM '

Command (M for help): P

disk/dev/vdb:10.7 GB, 10737418240 bytes, 20971520 sectors

Units = sectors of 1 * MB = bytes

Sector size (logical/physical): bytes/512 bytes

I/O size (minimum/optimal): bytes/512 bytes

Disk label Type:dos

Disk identifier:0x9546a42c

Device Boot Start End Blocks Id System

/DEV/VDB1 2048 1026047 512000 8e Linux LVM

/DEV/VDB2 1026048 2050047 512000 8e Linux LVM

Command (M for help): Wq

The partition table has been altered!

Calling IOCTL () to re-read partition table.

Syncing disks.

Pvs|pvdisplay

Vgs|vgdisplay

Lvs|lvdisplay

Monitoring commands

Watch-n 1 \

' echo ' ===pvinfo=== ' \

;p vs\

; echo "===vginfo===" \

; vgs\

; echo "===lvinfo===" \

; lvs\

;d f-h/mnt '

===pvinfo===

PV VG Fmt Attr PSize pfree

/DEV/VDB1 TBR lvm2 a--496.00m 0

/DEV/VDB2 TBR lvm2 a--496.00m 392.00m

===vginfo===

VG #PV #LV #SN Attr vsize vfree

TBR 2 1 0 wz--n-992.00m 392.00m

===lvinfo===

LV VG Attr lsize Pool Origin data% Move Log cpy%sync Convert

Lv0 Tbr-wi-ao----600.00m

Pvcreate/dev/vdb1

Vgcreate WESTOS/DEV/VDB1

Lvcreate-l 100m-n lv0 Westos

Mkfs.xfs/dev/westos/lv0

Mount/dev/westos/lv0/mnt

Lvextend-l 200m/dev/westos/lv0

Xfs_growfs/dev/westos/lv0

Pvcreate/dev/vdb2

Vgextend WESTOS/DEV/VDB2

Lvextend-l 600m/dev/westos/lv0

Xfs_growfs/dev/westos/lv0

Fdisk/dev/sdb

umount/mnt/

Mkfs.ext4/dev/westos/lv0

E2fsck-f/dev/westos/lv0

Resize2fs/dev/westos/lv0 200M

Mount/dev/westos/lv0/mnt

Lvreduce-l 200m/dev/westos/lv0

Pvmove/dev/vdb1/dev/vdb2

Vgreduce WESTOS/DEV/VDB1

Vgreduce--removemissing# #清除不知道的东西

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

Umount/mnt

Lvremove/dev/westos/lv0-backup

Lvremove/dev/westos/lv0

Vgremove Westos

Pvremove/dev/vdb2

Fdisk/dev/vdb

Fdisk/dev/vdb

#!/bin/bash

Fdisk/dev/vdb << End

N

+1g

Wq

End

Format for file.sh command for SH file.sh

This article is from the "12115084" blog, please be sure to keep this source http://12125084.blog.51cto.com/12115084/1871583

2 Unit 5