删除现有的外挂文件夹，将其容量，扩充进现有LV中。

Step 1：

移除现有文件夹

umount /dev/VolGroup00/iscsi00  

Step 2：

删除现有lv和vg

[root@CRM ~]# lvremove /dev/exdisk/exdisk1
Do you really want to remove active logical volume exdisk/exdisk1? [y/n]: yLogical volume "exdisk1" successfully removed
[root@CRM ~]# vgremove exdiskVolume group "exdisk" successfully removed

Step 3：

扩充vg和lv

[root@CRM ~]# vgextend cl /dev/sdb1Volume group "cl" successfully extended
[root@CRM ~]# lvextend -l 100%FREE /dev/cl/rootSize of logical volume cl/root changed from <15.95 GiB (4082 extents) to <50.0                                                                                                                                   0 GiB (12799 extents).Logical volume cl/root successfully resized.

Step 4：

扩容XFS

[root@CRM ~]# xfs_growfs /dev/cl/root
meta-data=/dev/mapper/cl-root    isize=512    agcount=4, agsize=1044992 blks=                       sectsz=512   attr=2, projid32bit=1=                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=4179968, imaxpct=25=                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=2560, version=2=                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 4179968 to 13106176