centos5.4 lvm分区扩展硬盘

[root@localhost ~]# df -h  
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                      5.7G  1.8G  3.7G  32% /
/dev/sda1              99M   12M   82M  13% /boot
tmpfs                 252M     0  252M   0% /dev/shm
[root@localhost ~]# fdisk -l

Disk /dev/sda: 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/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        1044     8281507+  8e  Linux LVM

Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table
[root@localhost ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-261, default 261):
Using default value 261

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.
[root@localhost ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                      5.7G  1.8G  3.7G  32% /
/dev/sda1              99M   12M   82M  13% /boot
tmpfs                 252M     0  252M   0% /dev/shm
[root@localhost ~]# fdisk -l

Disk /dev/sda: 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/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        1044     8281507+  8e  Linux LVM

Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         261     2096451   8e  Linux LVM
[root@localhost ~]# pvcreate /dev/sdb1
  Physical volume "/dev/sdb1" successfully created
[root@localhost ~]# vgdisplay
  /dev/hdc: open failed: 找不到介质
  --- Volume group ---
  VG Name               VolGroup00
  System ID            
  Format                lvm 2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               7.88 GB
  PE Size               32.00 MB
  Total PE              252
  Alloc PE / Size       252 / 7.88 GB
  Free  PE / Size       0 / 0  
  VG UUID               Fq9Gxs-9zS7-f0Y3-dhNB-Haqr-rH8d-lJqD84
  
[root@localhost ~]# vgextend VolGroup00 /dev/sdb1
  /dev/hdc: open failed: 找不到介质
  Volume group "VolGroup00" successfully extended
[root@localhost ~]# vgdisplay
  --- Volume group ---
  VG Name               VolGroup00
  System ID            
  Format                lvm 2
  Metadata Areas        2
  Metadata Sequence No  4
  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               9.84 GB
  PE Size               32.00 MB
  Total PE              315
  Alloc PE / Size       252 / 7.88 GB
  Free  PE / Size       63 / 1.97 GB
  VG UUID               Fq9Gxs-9zS7-f0Y3-dhNB-Haqr-rH8d-lJqD84
  
[root@localhost ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                      5.7G  1.8G  3.7G  32% /
/dev/sda1              99M   12M   82M  13% /boot
tmpfs                 252M     0  252M   0% /dev/shm
 [root@localhost ~]# lvresize -L +1.97G /dev//VolGroup00/LogVol00
  Rounding up size to full physical extent 2.00 GB
  Extending logical volume LogVol00 to 7.88 GB
  Insufficient free space: 64 extents needed, but only 63 available
[root@localhost ~]# lvresize -L +1.96G /dev//VolGroup00/LogVol00
  Rounding up size to full physical extent 1.97 GB
  Extending logical volume LogVol00 to 7.84 GB
  Logical volume LogVol00 successfully resized
[root@localhost ~]# vgdisplay
  --- Volume group ---
  VG Name               VolGroup00
  System ID            
  Format                lvm 2
  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               9.84 GB
  PE Size               32.00 MB
  Total PE              315
  Alloc PE / Size       315 / 9.84 GB
  Free  PE / Size       0 / 0  
  VG UUID               Fq9Gxs-9zS7-f0Y3-dhNB-Haqr-rH8d-lJqD84
  
[root@localhost ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                      5.7G  1.8G  3.7G  32% /
/dev/sda1              99M   12M   82M  13% /boot
tmpfs                 252M     0  252M   0% /dev/shm
[root@localhost ~]# resize2fs /dev/mapper/VolGroup00-LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/VolGroup00-LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/mapper/VolGroup00-LogVol00 to 2056192 (4k) blocks.
The filesystem on /dev/mapper/VolGroup00-LogVol00 is now 2056192 blocks long.

[root@localhost ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                      7.6G  1.8G  5.5G  24% /
/dev/sda1              99M   12M   82M  13% /boot
tmpfs                 252M     0  252M   0% /dev/shm
[root@localhost ~]# reboot

Broadcast message from root (pts/0) (Mon May 10 22:45:52 2010):

The system is going down for reboot NOW!