LVM SCENARIO for RHEL5

LVM

I have a 13.9 GB harddisk (/dev/sda). Initially it just had one
partition /dev/sda1 of size 5766 MB. To demonstrate LVM, using fdisk
utility I partitioned my harddisk in following manner:

PARTITION          SIZE (MB)            TYPE                      FILESYSTEM
/dev/sda1           5766                       PRIMARY             ext3
/dev/sda2           1653                       PRIMARY
/dev/sda3           1653                       PRIMARY
/dev/sda4           4886                       EXTENDED


To use /dev/sda2 & /dev/sda3 for Logical Volume Manager, follow the
following steps:

1.] Using fdisk utility change the partition id of /dev/sda2 and
/dev/sd3 to lvm (8e)

fdisk /dev/sda
m
p
l
m
t
Partition number: 2
Hex Code: 8e
p
w

fdisk /dev/sda
p
l
t
Partition Number: 3
Hex Code: 8e
p
w

#partprobe

#pvdisplay
#pvcreate /dev/sda2
#pvdisplay
#pvscan

#vgdisplay
#vgscan
#vgcreate Volgroup001 /dev/sda2
#vgscan
#vgdisplay

#lvdisplay
#lvscan
#lvcreate -L 788.48m -n cdrive /dev/Volgroup001
#lvdisplay
#lvscan

#lvdisplay
#lvscan
#lvcreate -l 196 -n ddrive /dev/Volgroup001
#lvdisplay
#lvscan

#pvdisplay
#vgdisplay
#vgscan
#vgextend /dev/Volgroup001 /dev/sda3
#vgscan
#vgdisplay

#lvscan
#lvdisplay
#lvextend -L +788.48m /dev/Volgroup001/cdrive
#lvscan
#lvdisplay

#mke2fs -j /dev/Volgroup001/ddrive
#mount /dev/Volgroup001/ddrive /var2
#dd if=/dev/null /var2/file1 count=780MB
#lvextend -l +196 /dev/Volgroup001/ddrive
#resize2fs /dev/Volgroup001/ddrive
#dd if=/dev/null /var2/file1 count=780MB