for i in /sys/class/scsi_host/*; do echo “- - -“ > $i/scan; done

    LVM 概念：

    lvcreate -n datalv -l +100%free rootvg

    文件系统扩容：
    pvcreate /dev/sdi
    vgextend VGOPM /dev/sdi
    lvextend /dev/VGOPM/lv_data -L +200G
    resize2fs /dev/VGOPM/lv_data

    lvextend/dev/datavg/datalv -l +100%free 全部扩完
    lvextend /dev/datavg/datalv -l 100%free 增加一倍容量

    lvextend /dev/rootvg/tmp -l +100%free

    xfs

    xfs_growfs

    1. [root@cl-sit-02-file /]# lvextend /dev/appvg/applv -l 100%free
    2.   Size of logical volume appvg/applv changed from <40.00 GiB (10239 extents) to <50.00 GiB (12799 extents).
    3.   Logical volume appvg/applv successfully resized.
    4. [root@cl-sit-02-file /]# 
    5. [root@cl-sit-02-file /]# 
    6. [root@cl-sit-02-file /]# lvextend /dev/appvg/applv -l +100%free
    7.   Size of logical volume appvg/applv changed from <50.00 GiB (12799 extents) to 89.99 GiB (23038 extents).
    8.   Logical volume appvg/applv successfully resized.
    9. [root@cl-sit-02-file /]# 
    10. [root@cl-sit-02-file /]#
    1. for i in /sys/class/scsi_host/*; do echo "- - -" > $i/scan; done