Do you really want to reduce lv_home?[y/n]: y
Reducing logical volume lv_home to 15.00 GiB
Logical volume lv_home successfully resized
[root@localhost ~]# vgdisplay
---Volume group ---
VGName VolGroup
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 7
VGAccess read/write
VGStatus resizable
MAXLV 0
CurLV 3
Open LV 3
MaxPV 0
CurPV 1
ActPV 1
VGSize 99.51 GiB
PESize 4.00 MiB
Total PE 25474
Alloc PE / Size 24194 /94.51 GiB
Free PE / Size 1280 / 5.00 GiB
VGUUID cxzV5u-cG1f-HvPd-pE8c-eKrR-dBjN-H07k3I
[root@localhost ~]# lvextend -L +5.00G/dev/mapper/VolGroup-lv_root
Extending logical volume lv_root to 80.57 GiB
Logical volume lv_root successfully resized
[root@localhost ~]# resize2fs -p/dev/mapper/VolGroup-lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/mapper/VolGroup-lv_rootis mounted on /; on-line resizing required
old desc_blocks = 5, new_desc_blocks = 6
Performing an on-line resize of/dev/mapper/VolGroup-lv_root to 21121024 (4k) blocks.
The filesystem on/dev/mapper/VolGroup-lv_root is now 21121024 blocks long.
[root@localhost ~]# df -h
文件系统 容量 已用 可用 已用%% 挂载点
/dev/mapper/VolGroup-lv_root
80G 50G 27G 66% /
tmpfs 3.9G 88K 3.9G 1% /dev/shm
