# Verification Commands
{pv,vg,lv}{s,scan,diskpay}

# LVM path example
/dev/vg_name/lv_name
/dev/mapper/vg_name-lv_name

# Create disk parition for LVM on /dev/sd[bcde]
for i in /dev/sd{b..e}
do
fdisk $i << EOF
n
p



t
8e
w
EOF
done


# Create physical volume from configured partition
pvcreate /dev/sd[bcd]1

# Remove physical volume
pvremove /dev/sde1

# Create volume group
vgcreate vg_name /dev/sdb1 /dev/sdc1 /dev/sdd1

# Remove a physical volume from a volume group
vgreduce vg_name /dev/sdd1

# Add/Extend a Physical volume to a volume group
vgextend vg_name /dev/sdd1

# Create logical volume for new volume group
lvcreate -L 10G -n lv_name vg_name
lvcreate -l 75%VG -n lv_name vg_name
lvcreate -l 60%FREE -n lv_name vg_name

# Create file system on logical volume
mke2fs -T ext4 /dev/vg_name/lv_name

# Extend logical volume from volume group
lvextend -L 13G /dev/vg_name/lv_name
lvextend -L +3G /dev/vg_name/lv_name

# Resize logical volume
resize2fs /dev/vg_name/lv_name

# Rename volume group
vgrename vg_name new_vg_name

# Reduce logical volume size
umount
e2fsck -f /dev/vg_name/lv_name
resize2fs -p /dev/vg_name/lv_name 5G
lvreduce --size 5G /dev/vg_name/lv_name
vgreduce vg_name /dev/sdd1
pvremove /dev/sdd1

# Move data from a pv to another pv
pvmove /dev/sdb1
pvmove /dev/sdb1 /dev/sdc1

# Create snapshot from logical volume
lvcreate -n snapshot -L 5G -s vg_name

# Roll-back snapshot
lvconvert --merge /dev/vg_name/sanpshot