root@cnpradm01:~# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/xvda1 9.8G 2.1G 7.2G 22% /

tmpfs 1.8G 0 1.8G 0% /dev/shm

/dev/mapper/vg0-lvhome

2.0G 1.7G 278M 86% /home

/dev/mapper/vg0-lvvar

3.9G 537M 3.3G 14% /var

/dev/mapper/vg0-lvopt

9.8G 432M 9.2G 5% /opt

root@cnpradm01:~# vgs

VG #PV #LV #SN Attr VSize VFree

vg0 1 3 0 wz--n- 95.98g 79.98g

root@cnpradm01:~# pvs

PV VG Fmt Attr PSize PFree

/dev/xvdb2 vg0 lvm2 a-- 95.98g 79.98g

/dev/xvdf1 lvm2 --- 100.00g 100.00g

--添加10G到逻辑卷

root@cnpradm01:~# lvextend -L+10G /dev/mapper/vg0-lvhome

Size of logical volume vg0/lvhome changed from 2.00 GiB (128 extents) to 12.00GiB (768 extents).

Logical volume lvhome successfully resized

--resize使文件系统识别

root@cnpradm01:~# resize2fs /dev/mapper/vg0-lvhome

resize2fs 1.41.12 (17-May-2010)

Filesystem at /dev/mapper/vg0-lvhome is mounted on /home; on-line resizing required

old desc_blocks = 1, new_desc_blocks = 1

Performing an on-line resize of /dev/mapper/vg0-lvhome to 3145728 (4k) blocks.

The filesystem on /dev/mapper/vg0-lvhome is now 3145728 blocks long.

root@cnpradm01:~# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/xvda1 9.8G 2.1G 7.2G 22% /

tmpfs 1.8G 0 1.8G 0% /dev/shm

/dev/mapper/vg0-lvhome

12G 1.7G 11G 14% /home

/dev/mapper/vg0-lvvar

3.9G 537M 3.3G 14% /var

/dev/mapper/vg0-lvopt

9.8G 432M 9.2G 5% /opt

--------------------------------------------------------------------------------------------------

Add disk size (Another Example)

Disk Name Or Path: /var
Disk Size: 30G
Disk Used: 28G
Disk Available: 1.2G

root@euinpoc01:~# pvs (physical vol)

PV VG Fmt Attr PSize PFree

/dev/sda2 VolGroup lvm2 a-- 44.51g 0

/dev/sdb VolGroup lvm2 a-- 5.00g 4.00m

/dev/sdc VolGroup lvm2 a-- 100.00g 50.00g

root@euinpoc01:~# lvs (logical vol)

LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert

lv_root VolGroup -wi-ao---- 92.54g

lv_swap VolGroup -wi-ao---- 6.96g

root@euinpoc01:~# vgs (vol group)

VG #PV #LV #SN Attr VSize VFree

VolGroup 3 2 0 wz--n- 149.50g 50.00g

Resize a partition :
$ vgs
$ lvextend -L+10G /dev/mapper/vg0-lvvar
$ resize2fs /dev/mapper/vg0-lvvar

------------------------------------------------------------------------------

Create a partition for /tmp:
$ lvs
$ lvcreate -L 20G -n lvtmp vg0
$ mkfs.ext4 /dev/mapper/vg0-lvtmp -- formate disk

$ mkdir /test

Mount /test
$ vi /etc/fstab
$ cp /tmp/* /tmp2
$ umount /tmp2
$ mv /tmp /tmp666
$ mv/tmp2 /tmp
$ vi /etc/fstab
$ umout -a

lvcreate –L 10M –n test volGroup[VolGroupName]

ITPub博客

How to extend the LV size

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