lvm cluster
[root@localhost ~]# fdisk /dev/sdb WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): n Partition number (1-128, default 1): First sector (34-20971486, default 2048): Last sector, +sectors or +size{K,M,G,T,P} (2048-20971486, default 20971486): +512MB Created partition 1 Command (m for help): wq The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@localhost ~]# pvcreate /dev/sdb1 WARNING: ext4 signature detected on /dev/sdb1 at offset 1080. Wipe it? [y/n]: y Wiping ext4 signature on /dev/sdb1. Physical volume "/dev/sdb1" successfully created. ...