[root@dev-vhost017 ~]# mkfs.ext4 /dev/sda3
lvm 扩容
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[root@dev-vhost017 ~]# pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created
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[root@dev-vhost017 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 vg_centos6 lvm2 a-- 9.51g 0
/dev/sda3 lvm2 --- 40.00g 40.00g
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[root@dev-vhost017 ~]# vgextend /dev/mapper/vg_centos6 /dev/sda3 (注意组名)
Volume group "vg_centos6" successfully extended
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[root@dev-vhost017 ~]# lvextend -L 39.9G /dev/vg_centos6/lv_root /dev/sda3
Rounding size to boundary between physical extents: 39.90 GiB
Size of logical volume vg_centos6/lv_root changed from 8.51 GiB (2178 extents) to 39.90 GiB (10215 extents).
Logical volume lv_root successfully resized
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[root@dev-vhost017 ~]# resize2fs /dev/vg_centos6/lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_centos6/lv_root is mounted on /; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 3
Performing an on-line resize of /dev/vg_centos6/lv_root to 10460160 (4k) blocks.
The filesystem on /dev/vg_centos6/lv_root is now 10460160 blocks long.
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[root@dev-vhost017 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 vg_centos6 lvm2 a-- 9.51g 0
/dev/sda3 vg_centos6 lvm2 a-- 40.00g 8.60g
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[root@dev-vhost017 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vg_centos6 2 2 0 wz--n- 49.50g 8.60g
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[root@dev-vhost017 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv_root vg_centos6 -wi-ao---- 39.90g
lv_swap vg_centos6 -wi-ao---- 1.00g
