[root@szm ~]# vgdisplay
--- Volume group ---
VG Name vg_szm
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 13.67 GiB
PE Size 4.00 MiB
Total PE 3499
Alloc PE / Size 2000 / 7.81 GiB
Free PE / Size 1499 / 5.86 GiB----这里有空间，
VG UUID 2r98Q2-bIGD-EXEZ-FmBy-JllD-EBRs-fnhEML
[root@szm ~]# vgextend vg_szm /dev/sda9（sda9为8e类型）
[root@szm ~]# pvcreate /dev/sda9
Physical volume "/dev/sda9" successfully created
[root@szm ~]# vgextend vg_szm /dev/sda9
Volume group "vg_szm" successfully extended
[root@szm ~]# vgdisplay
--- Volume group ---
VG Name vg_szm
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 14.68 GiB
PE Size 4.00 MiB
Total PE 3757
Alloc PE / Size 2000 / 7.81 GiB
Free PE / Size 1757 / 6.86 GiB----加了1G大小
VG UUID 2r98Q2-bIGD-EXEZ-FmBy-JllD-EBRs-fnhEML
[root@szm ~]# lvdisplay
--- Logical volume ---
LV Name /dev/vg_szm/LogVol00
VG Name vg_szm
LV UUID 6ZNZln-s1Ch-ohmL-pBi7-Fmfi-Wb9j-SUI331
LV Write Access read/write
LV Status available
# open 1
LV Size 7.81 GiB
Current LE 2000
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
[root@szm ~]# lvextend -L 1G /dev/vg_szm/LogVol00
New size given (256 extents) not larger than existing size (2000 extents)
Run `lvextend --help' for more information.
[root@szm ~]# lvextend -L +1G /dev/vg_szm/LogVol00
Extending logical volume LogVol00 to 8.81 GiB
Logical volume LogVol00 successfully resized
[root@szm ~]# resize2fs /dev/vg_szm/LogVol00
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_szm/LogVol00 is mounted on /home; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 1
Performing an on-line resize of /dev/vg_szm/LogVol00 to 2310144 (4k) blocks.
The filesystem on /dev/vg_szm/LogVol00 is now 2310144 blocks long.
[root@szm ~]# df -h | grep home
8.7G 147M 8.1G 2% /home
