ハードディスク構成
[root@localhost ~]# fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = シリンダ数 of 16065 * 512 = 8225280 bytes
デバイス Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 1044 8281507+ 8e Linux LVM
[root@localhost ~]# df
Filesystem 1K-ブロック 使用 使用可 使用% マウント位置
/dev/mapper/VolGroup00-LogVol00
7491040 1602072 5502308 23% /
/dev/sda1 101086 17758 78109 19% /boot
tmpfs 127796 0 127796 0% /dev/shm
[root@localhost ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name VolGroup00
PV Size 7.90 GB / not usable 23.41 MB
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 252
Free PE 0
Allocated PE 252
PV UUID 7eq4CJ-4kD9-71ra-YKcV-PyL1-bqnw-9B3OmK
[root@localhost ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
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 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 oJNrk4-QELc-2sFa-M0AN-y4f1-Vt3v-lc0yWn
[root@localhost ~]# lvdisplay
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID PIz0CZ-UNYF-e3qx-oSRQ-Giba-fe3A-mM0Hl4
LV Write Access read/write
LV Status available
# open 1
LV Size 7.38 GB
Current LE 236
Segments 1
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 IQTHtR-zrcX-iL3b-kvDP-8bwu-QtaV-Akn2xc
LV Write Access read/write
LV Status available
# open 1
LV Size 512.00 MB
Current LE 16
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
作業手順
- CentOS5のインストールディスクでブートしレスキューモードを立ち上げる
- ハードディスクにあるパーティションをマウントしない
- VGを有効化する
$ lvm vgchange -a y /dev/VolGroup00
$ e2fsck -f /dev/VolGroup00/LogVol00
$ resize2fs /dev/VolGroup00/LogVol00 5120M
$ lvm lvresize -L 5120M /dev/VolGroup00/LogVol00
$ exit