正在使用的LINUX系統，增加了空間，需要掛載至系統
--------查詢需要掛載的設備名--------
fdisk -l
Disk /dev/sdb: 2396.0 GB, 2395996160000 bytes
255 heads, 63 sectors/track, 291296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdc: 2396.0 GB, 2395996160000 bytes
255 heads, 63 sectors/track, 291296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
-----創建PV----
pvcreate /dev/sdb
pvcreate /dev/sdc
---創建vg-----
vgcreate VolGroup_data /dev/sdb /dev/sdc
mkdir /data
cd
----創建lv-------
lvcreate -l 100%FREE -n lv_data VolGroup_data
----格式化----
mkfs -t ext4 /dev/VolGroup_data/lv_data
-----掛載----
mount /dev/VolGroup_data/lv_data /data/
-------增加到啓動掛載-------
vi /etc/fstab
可以按照uuid掛載，也可以按照路徑，比如：
uuid可以通過lvdisplay查詢。
UUID=22d59ff0-1646-4e28-af50-e7281286934c / ext4 defaults 1 1
/dev/mapper/VolGroup_data-lv_data /data ext4 defaults 0 0