pv vg lv

扫描 for X in `ls`;do echo '---'>$X/scan;done
smartctl -a /dev/sdi
pvcreate /dev/sdi
pvs
vgcreate oraclevg02 /dev/sdi
vgs
lvcreate -l 100%FREE oraclevg02
lvs
df -h
mkdir /oradata
mkfs.ext4 /dev/mapper/oraclevg02-lvol0
mount /dev/mapper/oraclevg02-lvol0 /oradata/
df -h
chown -R oracle:oinstall /oradata/

生产环境添加磁盘
1、在存储上增加LUN
2、将添加的LUN添加到对应的LUN组里
3、在数据库服务器一个节点扫盘：
a、cd /sys/class/scsi_host/
--存储链路重新扫描
for X in `ls`;do echo '- - -' > $X/scan;done
echo "1" > issue_lip