redhat AS5 LV M添加磁盘空间 实例

 [root@virus_update /]# df -h

Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
2.9G 2.4G 396M 86% /
/dev/sda1 99M 11M 83M 12% /boot
tmpfs 1014M 0 1014M 0% /dev/shm
[root@virus_update /]# fdisk -l

Disk /dev/sda: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 652 5132767+ 8e Linux LVM

Disk /dev/sdb: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table
[root@virus_update /]# 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.

The number of cylinders for this disk is set to 5221.
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)
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 (1-5221, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-5221, default 5221):
Using default value 5221

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@virus_update /]# fdisk -l

Disk /dev/sda: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 652 5132767+ 8e Linux LVM

Disk /dev/sdb: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 1 5221 41937651 83 Linux

 

[root@virus_update /]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
[root@virus_update /]# pvdisplay /dev/sdb1
--- NEW Physical volume ---
PV Name /dev/sdb1
VG Name
PV Size 39.99 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID kW7PHZ-CtMC-0SzR-PNvV-OrZW-2s2d-LFfJ6I

[root@virus_update /]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
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 4.88 GB
PE Size 32.00 MB
Total PE 156
Alloc PE / Size 156 / 4.88 GB
Free PE / Size 0 / 0
VG UUID 4Iob4o-byje-ckbV-7dGt-49zm-J27Q-w0NtrU

[root@virus_update /]# vgextend VolGroup00 /dev/sdb1
Volume group "VolGroup00" successfully extended
[root@virus_update /]# lvextend -L +40G /dev/VolGroup00/
[root@virus_update /]# lvscan
ACTIVE '/dev/VolGroup00/LogVol00' [2.94 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol01' [1.94 GB] inherit
[root@virus_update /]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
2.9G 2.4G 396M 86% /
/dev/sda1 99M 11M 83M 12% /boot
tmpfs 1014M 0 1014M 0% /dev/shm

[root@virus_update ~]# 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 10993664 (4k) blocks.

The filesystem on /dev/VolGroup00/LogVol00 is now 10993664 blocks long.

[root@virus_update ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
41G 2.4G 37G 6% /
/dev/sda1 99M 11M 83M 12% /boot
tmpfs 1014M 0 1014M 0% /dev/shm
[root@virus_update ~]#