LVM

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Revision as of 05:53, 12 March 2022 by Brb (talk | contribs) (→‎Creation)
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Resource

Cheatsheet

Naming convention

  • /dev/vg_<hostname>_<type><number>/lv_<filesystem>. See this
  • /dev/vg_`hostname -s`_[0-9][0-9]/lv_{foo|bar}. See this.

Creation

  • Setup LVM and pool hard drives in Ubuntu or Kodibuntu 
    # Step 1 Find your drive names
lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL

NAME         FSTYPE        SIZE MOUNTPOINT   LABEL
sda                      223.6G              
├─sda1                    1007K              
├─sda2       vfat          512M /boot/efi    
└─sda3       LVM2_member 223.1G              
  ├─pve-swap swap            8G [SWAP]       
  └─pve-root ext4        215.1G /            
nvme0n1                  465.8G              
└─nvme0n1p1  ext4        465.8G /mnt/pve/vm1 

# Step 2 Format your drives
fdisk /dev/sdX

# Step 3 Create physical volume
pvcreate /dev/sd[bcd]
pvdisplay

# Step 4 Adding the VG (Volume Group) to the LVM
vgcreate {VG_NAME} /dev/sd[bcd]
vgdisplay

# Step 5 Adding the LV (Logical Volume) to the LVM VG (Volume Group)
lvcreate -l 100%FREE -n {LV_NAME} {VG_NAME}
lvdisplay

# Step 6 FORMATTING OUR NEW LVM LV (LOGICAL VOLUME)
mkfs.ext4 {LV_PATH}

# Step 7 MOUNT LVM LV (LOGICAL VOLUME) ON BOOT
blkid
# Grab the UUID of your storage space, 
# it will be after the /dev/mapper/{VG_NAME}-{LV_NAME}
nano /etc/fstab
mount -a

# Step 8 ENABLE SMART DRIVE MONITORING
nano /etc/defaults/smartmontools
nano /etc/smartd.conf
  • LVM Layout & Arch Linux Tutorial – Configure LVM on Arch Linux 2017 
    # Step 0 See available physical disks
fdisk

# Step 1 Create new Physical Volume
pvcreate /dev/vdb
pvcreate /dev/vdc
pvdisplay 

# Step 2 Create new Volume Group (VG)
vgcreate archVG /dev/vdb /dev/vdc
vgdisplay

# Step 3 Logical Volume
lvcreate -L 5G archVG -n archLV01
lvcreate -L 15G archVG -n archLV02
lvdisplay
lsblk 

# Step 4 Format the new volume
mkfs.ext4 /dev/mapper/archVG-archLV01

# Step 5 Mount
mount /dev/mapper/archVG-archLV01 /mnt
  • How to Extend LVM Disk on Ubuntu 20.04 
    # Step 1. Check the file system list
sudo df -h /home/

# Step 2. Check the Physical Volume (pv)
sudo pvs
sudo vgdisplay
sudo lvdisplay

# Step 3. Create a New Physical Volume
sudo fdisk -l
sudo lvmdiskscan
sudo pvcreate /dev/sdb
sudo lvmdiskscan -l

# Step 4. Add the new Physical Volume (pv) to Existing Logical Volume (lv)
sudo vgextend ubuntu-vg /dev/sdb
sudo lvm lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

sudo resize2fs -p /dev/mapper/ubuntu--vg-ubuntu--lv
sudo df -h

Add new disk

  • How to add new disk to existing Volume Group vgextend 
    # Step 1 Create Physical Volume
pvcreate /dev/vdc

# Step 2 Add Physical Volume to Existing Volume Group
vgdisplay
vgextend manjaro_lvm /dev/vdc
vgdisplay
  • Adding a New Disk Into an Existing Logical Volume. lvextend 
    umount /dev/serverdata/data
fdisk -l
pvcreate /dev/sdb
vgextend serverdata /dev/sdb
vgdisplay serverdata 

lvextend -l +100%FREE /dev/serverdata/data
# OR something like 
# lvextend -L+25G /dev/serverdata/data
lvdisplay serverdata

e2fsck -f /dev/serverdata/data # optional
resize2fs /dev/serverdata/data
e2fsck -f /dev/serverdata/data # optional

Delete

Snapshot

Raspberry Pi

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