LVM commands

create_volume.sh

# create physical volume
pvcreate /dev/<volume_name>

# create volume group
vgcreate <group_name> /dev/<volume_name>

# create volume
lvcreate -L <size>G -n <volume_name> <group_name>

# create fs
mkfs.<type> <vol_path>

# example mongodb
pvcreate /dev/xvdb /dev/xvdc
vgcreate mongodb-data /dev/xvdb
vgcreate mongodb-logs /dev/xvdc
lvcreate -L 40G -n data mongodb-data
lvcreate -L 8G -n logs mongodb-logs
mkfs.xfs /dev/mongodb-data/data
mkfs.ext4 /dev/mongodb-logs/logs