linux LVM (Logical volume management) - Concise tutorial

Published: 05 November 2015
on channel: jaekoo cho

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Following step and CLI Command for the Linux LVM (Logical Volume Manage) creating and deleting.

1.LVM version checking
2.Scanning commands
3.Creating the Physical Volumes
4.Creating the Volume Groups
5.Creating the Logical volumes
6.Creating the Filesystems
7.Mounting and Unmounting Filesystems
8.Deleting the Logical volume
9.Deleting the Volume Groups
10.Deleting the Physical Volumes

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CLI Command
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1. LVM version checking
cat /etc/os-release
lvm version

2. Scanning disks
lvmdiskscan
lvmdiskscan -l
pvscan
vgscan
lvscan

3. Creating Physical Volumes
pvcreate /dev/sdb /dev/sdc /dev/sdd /dev/sde
lvmdiskscan -l
pvs
pvdisplay /dev/sdb

4. Creating Volume Groups
vgcreate jae-vg /dev/sdb /dev/sdc
vgcreate koo-vg /dev/sdd /dev/sde
vgs
vgdisplay jae-vg
vgdisplay koo-vg
pvs
pvdisplay /dev/sdb

5. Creating Logical volumes (Stripe volume)
lvcreate -i 2 -I 8 -n jae-lv -L 10G jae-vg
lvs
lvdisplay jae-vg/jae-lv
pvs

5. Creating Logical volumes (Mirror volume)
lvcreate -n koo-lv0 -m1 -L 5G koo-vg
lvs
lvdisplay koo-vg/koo-lv0
pvs

5. Creating Logical volumes (Linear volume)
lvcreate -n koo-lv1 -L 15G koo-vg
lvs
lvdisplay koo-vg/koo-lv1
pvs

6. Creating the Filesystems
mkfs.ext4 /dev/jae-vg/jae-lv
mkfs.ext4 /dev/koo-vg/koo-lv0
mkfs.ext4 /dev/koo-vg/koo-lv1
df -h /dev/jae-vg/jae-lv
df -h /dev/koo-vg/koo-lv0
df -h /dev/koo-vg/koo-lv1

7. Mounting the Filesystems
mkdir -p /jaekoo/jae-lv /jaekoo/koo-lv0 /jaekoo/koo-lv1
mount /dev/jae-vg/jae-lv /jaekoo/jae-lv
mount /dev/koo-vg/koo-lv0 /jaekoo/koo-lv0
mount /dev/koo-vg/koo-lv1 /jaekoo/koo-lv1
df -h
vi /etc/fstab
/dev/jae-vg/jae-lv /jaekoo/jae-lv ext4 defaults 0 2
/dev/koo-vg/koo-lv0 /jaekoo/koo-lv0 ext4 defaults 0 2
/dev/koo-vg/koo-lv1 /jaekoo/koo-lv1 ext4 defaults 0 2

7. Unmounting the Filesystems
umount /jaekoo/jae-lv
umount /jaekoo/koo-lv0 /jaekoo/koo-lv1
vi /etc/fstab

8. Deleting Logical volume
lvremove -f jae-vg/jae-lv
lvremove -f koo-vg/koo-lv0
lvremove -f koo-vg/koo-lv1
lvs
pvs

9. Deleting Volume Groups
vgreduce koo-vg /dev/sde
vgs
pvs
vgremove koo-vg
vgremove jae-vg
vgs
pvs

10. Deleting Physical Volumes
pvremove /dev/sdb
pvremove /dev/sdc
pvremove /dev/sdd
pvremove /dev/sde
pvs
lvmdiskscan

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