LVM (Logical Volume Manager)
Create 3 partitions for implementing RAID using fdisk command.
e.g. #fdisk /dev/hda
Press n to create the 3 new partitions each of 100Mb in size.
Press p to see the partition table.
Press t to change the partition id of all the three partitions created by you to 8e (Linux LVM).
Press wq to save and exit from fdisk utility in linux.
Use fdisk -l to list the partition table.
Creating LVM
# pvcreate /dev/hda6 /dev/hda7 /dev/hda8
# pvdisplay
#vgcreate vg /dev/hda6 /dev/hda7 /dev/hda8
#vgdisplay vg
#lvcreate -L +10M -n data vg
-L is used to define size.
-n is used to define the name.
#mkfs.ext3 /dev/vg/data
#lvdisplay /dev/vg/data
#mkdir disk
#mount /dev/vg/data disk
#df -h disk
#lvextend -L +10M /dev/vg/data
#ext2online /dev/vg/data
#df -h disk
#umount disk
#vgchange -an vg (optional) -a control the avability of the logical volume in the volume group for input and output.
#lvremove /dev/vg/data
Press y to continue
#lvdisplay
#vgremove /dev/vg
#vgdisplay
#pvremove /dev/hda6 /dev/hda7 /dev/hda8
#pvdisplay
01 - Lvm Fdisk
02 - Lvm Implementation
