CentOS - LVM quick notes
Please refer to full documentation online - LVM Administrator's Guide Am not responsible if you break your server by following my notes. TIP : If not sure, always try on TEST server before running your commands on PRODUCTION. SCENARIO : There is a Fresh install of CentOS on VM (TEST Server) [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup-lv_root 6.7G 1.1G 5.3G 17% / tmpfs 250M 4.0K 250M 1% /dev/shm /dev/sda1 485M 31M 430M 7% /boot By default LVM is used. REQUIREMENT : Add new logical volume to the server (use existing Volume Group called "VolGroup"). STEPS : 1. add new Virtual Hard Disk (at VMWARE or VIRTUALBOX level) 2. fdisk -l ( e.g newly added disk is /dev/sdb) 3. pvcreate /dev/sdb 4. pvs (verify) 5. vgextend VolGroup /dev/sdb 6. vgs (verify) 7. lvcreate -L 450M -n mydata VolGroup (create new logical volume of 450MB named &