Centos 7.6 LVM在线扩容磁盘

前言

实现在线扩容空间不足 

大容量分区Centos 6 ,Centos 7 通用

https://blog.youkuaiyun.com/hanzheng260561728/article/details/51244920

不用重启服务器，刷新磁盘，加载新硬盘上线

ls /sys/class/scsi_host/
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan

# 或者
for i in `find /sys/class/scsi_host/host*`;do echo "- - -" > $i/scan; done
for i in `find /sys/class/scsi_device/*`;do echo 1 > $i/device/rescan; done

安装xfs

yum install