LVM operations
Appearance
1. create disk partition (fdisk) 2. pvcreate /dev/sdb1 3. lvmdiskscan , pvdisplay , pvscan(to check) 4. vgcreate vg_newlvm /dev/sdb1 vgcreate vg_newlvm /dev/sdb1 /dev/sdc1 5. lvcreate --name centos7_newvol -l 100%FREE vg_newlvm lvcreate -L 15G vg_newlvm lvcreate -l 50%VG -n centos7_newvol vg_newlvm 6. lvdisplay (to check) 7. mkfs.ext4 /dev/vg_newlvm/centos7_newvol