LVM CONFIGURATION IN RHEL5

Create 3 partitions any size
eg: /dev/sda{8,9,20}
pvdislpay
pvcdeate /dev/sda{8,9,20}
pvdisplay (can see physical volumes)

vgdisplay
vgcreate vol0 /dev/sda{8,9,20}
vgdisplay (can see volume groups)

lvdiplay
lvcreate -L +300M -n lv0 vol0
lvcreate -L +200M -n lv1 vol0
lvdisplay


mkfs.ext3 /dev/vol0/lv0
mkfs.ext3 /dev/vol0/lv1

mkdir /LV0
mount /dev/vol0/lv0 /LV0
df -Th

lvextend -L +100M /dev/vol0/lv0
lvdislpay
mkfs.ext3 /dev/vol0/lv0
resize2fs /dev/vol0/lv0

lvreduce -L -200M /dev/vol0/lv1 (take backup of data before reducing and formating)
lvdislpay
mkfs.ext3 /dev/vol0/lv1
resize2fs /dev/vol0/lv1

lvrename /dev/vol0/lv0 kalyan
lvdisplay

Create new partition
eg: /dev/sda11
pvcreate /dev/sda11
vgextend vol0 /dev/sda11
vgdisplay