Create Logical volume
First we need to find out which disks and partitions are being used. So we could use the following commands
#df -h [This will display which partitions are being used]
#fdisk -l [This will show which disks are being used and disks that are not mounted.]
Now we can start the lvm implementation,we have two unused partitions /dev/sda3 and /dev/sda4
In logical volume creation,need to the following sequence
1. create physical volume
2. create volume group
3. create logical volume
1.Create physical volume
Verify the volumes with pvdisplay command
2.Create volume group
#vgcreate test_volume /dev/sda3 /dev/sda4
#vgchange -a y test_volume [To activate the volume]
Verify the group with vgdisplay
3.Now create logical volume
#lvcreate -L5G -n test_logical test_volume
test_logical –name of logical volume
test_volume–name of volume group
Verify the logical volumes with lvdisplay
Create filesystem for this logical volume
To use this file system, we need to mount and add to /etc/fstab to use permanently.
#mount /dev/test_volume/test_logical /mnt
add the following entry to /etc/fstab
/dev/test_volume/test_logical /mnt ext3 defaults 0 0
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