LVM and disk commands

lvm-commands.sh

# List block devices
lsblk
NAME           MAJ:MIN  RM  SIZE    RO  TYPE  MOUNTPOINT
sda            8:0      0   238.5G  0   disk
├─sda1         8:1      0   200M    0   part  /boot/efi
├─sda2         8:2      0   500M    0   part  /boot
└─sda3         8:3      0   237.8G  0   part
├─fedora-root  253:0    0   50G     0   lvm   /
├─fedora-swap  253:1    0   2G      0   lvm   [SWAP]
└─fedora-home  253:2    0   185.9G  0   lvm

# create LVM primary partition 
sudo fdisk
# type : 8e


# create physical volume
sudo pvcreate /dev/sdb1
sudo pvdisplay
sudo pvscan

# add physical volume to volume group
sudo vgextend GROUP_VOLUME_NAME /dev/sdb1

# check VGSize size (=total size of volum group)
sudo vgdisplay 
sudo vgscan

# create logical volume of size XX
sudo lvcreate -L1XXG -n VOLUME_LOGIC_NAME GROUP_VOLUME_NAME

# allocate space to the new logical volume
sudo lvextend -r -L+100G /dev/GROUP_VOLUME_NAME/VOLUME_LOGIC_NAME
sudo lvdisplay
sudo lvscan

# create ext3 file system
sudo mkfs.ext3 /dev/GROUP_VOLUME_NAME/VOLUME_LOGIC_NAME

# mount logical volume
sudo mount /dev/GROUP_VOLUME_NAME/VOLUME_LOGIC_NAME /MOUNT_POINT

# mount logical volume automaticly at startup
# in /etc/fstab add
/dev/GROUP_VOLUME_NAME/VOLUME_LOGIC_NAME /MOUNT_POINT ext3 defaults 0 0


# monitoring tools
https://www.opsdash.com/blog/disk-monitoring-linux.html