1、添加新的硬盘
[root@test001 ~]# fdisk -l
Disk /dev/sda: 17.1 GB, 17179869184 bytes
255 heads, 63 sectors/track, 2088 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 2088 16667437+ 8e Linux LVM
Disk /dev/sdb: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 609 4891761 83 Linux
/dev/sdb2 610 1218 4891792+ 83 Linux
/dev/sdb3 1219 1827 4891792+ 83 Linux
/dev/sdb4 1828 3916 16779892+ 5 Extended
/dev/sdb5 1828 2436 4891761 83 Linux
/dev/sdb6 2437 3045 4891761 83 Linux
/dev/sdb7 3046 3916 6996276 83 Linux
Disk /dev/sdc: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 1305 10482381 8e Linux LVM
Disk /dev/sdd: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
看到新添加的硬盘/dev/sdd
2、格式化硬盘
[root@test001 ~]# fdisk /dev/sdd
The number of cylinders for this disk is set to 1044.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1044, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-1044, default 1044):
Using default value 1044
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
3、查看磁盘信息
[root@test001 ~]# fdisk -l /dev/sdd
Disk /dev/sdd: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdd1 1 1044 8385898+ 8e Linux LVM
4、创建PV（物理卷）
[root@test001 ~]# pvcreate /dev/sdd1
Physical volume "/dev/sdd1" successfully created
查看系统中的物理卷
[root@test001 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name VolGroup00
PV Size 15.90 GB / not usable 20.79 MB
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 508
Free PE 0
Allocated PE 508
PV UUID 071V5o-QN2P-u6nQ-1A9A-dn9n-OF2q-Da60ga
--- Physical volume ---
PV Name /dev/sdc1
VG Name VolGroup00
PV Size 10.00 GB / not usable 28.70 MB
Allocatable yes
PE Size (KByte) 32768
Total PE 319
Free PE 5
Allocated PE 314
PV UUID S9gULJ-Hz9M-rGNE-x0ar-HX7J-32sf-OpK0fb
"/dev/sdd1" is a new physical volume of "8.00 GB"
--- NEW Physical volume ---
PV Name /dev/sdd1
VG Name
PV Size 8.00 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID KQJ5kK-5cNG-OgSz-ogqe-7pjc-tIZj-bYw2Ag
5、将PV添加到VG（卷组），VolGroup00
查看先卷组
[root@test001 ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 5
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 25.84 GB
PE Size 32.00 MB
Total PE 827
Alloc PE / Size 822 / 25.69 GB
Free PE / Size 5 / 160.00 MB
VG UUID 3BzCKt-XD29-6bDz-KCmg-ajTu-N3Jh-odScSf
添加到卷组
[root@test001 ~]# vgextend VolGroup00 /dev/sdd1
Volume group "VolGroup00" successfully extended
再次查看卷组，卷组已经增大
[root@test001 ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 3
Act PV 3
VG Size 33.81 GB
PE Size 32.00 MB
Total PE 1082
Alloc PE / Size 822 / 25.69 GB
Free PE / Size 260 / 8.12 GB
VG UUID 3BzCKt-XD29-6bDz-KCmg-ajTu-N3Jh-odScSf
6、扩展LV（逻辑卷）
[root@test001 ~]# lvextend -L+8G /dev/VolGroup00/LogVol00
Extending logical volume LogVol00 to 29.78 GB
Logical volume LogVol00 successfully resized
查看下LV
[root@test001 ~]# lvdisplay
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID A6HxdN-nREM-72xd-B2JD-joFZ-BkTU-WYawMg
LV Write Access read/write
LV Status available
# open 1
LV Size 29.78 GB
Current LE 953
Segments 3
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID bSQ4uu-5vWv-4jUb-4ELw-BWuI-Ha83-l1CUwa
LV Write Access read/write
LV Status available
# open 1
LV Size 3.91 GB
Current LE 125
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
7、
[root@test001 ~]# df -hT
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
ext3 22G 15G 5.1G 75% /
/dev/sda1 ext3 99M 16M 79M 17% /boot
tmpfs tmpfs 1006M 653M 354M 65% /dev/shm
上面看到逻辑卷已经增加，系统未增加
使用resize2fs命令将文件系统扩展到增加的空间上：
[root@test001 ~]# resize2fs /dev/VolGroup00/LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/VolGroup00/LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/VolGroup00/LogVol00 to 7806976 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 7806976 blocks long.
[root@test001 ~]# df -hT
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
ext3 29G 15G 13G 55% /
/dev/sda1 ext3 99M 16M 79M 17% /boot
tmpfs tmpfs 1006M 653M 354M 65% /dev/shm