问题： New size given (4096 extents) not larger than existing size (5120 extents)

[root@docker1 ~]# vgdisplay

  --- Volume group ---

  VG Name               cl

  System ID             

  Format                lvm2

  Metadata Areas          2

  Metadata Sequence No      5

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                2

  Open LV               2

  Max PV                0

  Cur PV                2

  Act PV                2

  VG Size               38.99 GiB

  PE Size               4.00 MiB

  Total PE              9982

  Alloc PE / Size       5376 / 21.00 GiB

  Free  PE / Size       4606 / 17.99 GiB

  VG UUID               0g6KUL-2kdC-e4Ml-EMFH-2JYs-SNUT-bn09Od

[root@docker1 ~]# lvextend -L 17G /dev/mapper/cl-root

  New size given (4352 extents) not larger than existing size (5120 extents)

[root@docker1 ~]# lvextend -L 16G /dev/mapper/cl-root

  New size given (4096 extents) not larger than existing size (5120 extents)

给lvm---根目录/dev/centos/cl-root扩容

[root@docker1 ~]# lvextend -l +100%FREE /dev/mapper/cl-root

  Size of logical volume cl/root changed from 20.00 GiB (5120 extents) to 37.99 GiB (9726 extents).

  Logical volume cl/root successfully resized.

本文转自 Mr_sheng 51CTO博客，原文链接:http://blog.51cto.com/sf1314/2062126