2015-08-31 Linux Add a physical disk and use LVM for capacity expansion

Linux adds a physical disk, using LVM for capacity expansion
First, create a new partition:
Fdisk/dev/sdb
N
P #选择逻辑分区, if not, first create an extended partition and then add the logical partition (hard disk: up to four partitions p-p-p-p or P-P-P-E)
1 #分区号 (starting from 5),/DEV/SDB1
T 8e #分区类型8e表示LVM分区
W #写入分区表
Partprobe #重读分区表
Reboot #重启
Mkfs–t EXT3/DEV/SDB1 #格式化
Partx/dev/sdb #查看当前硬盘的分区表及使用情况
Second, the creation of PV, expansion vg,lv
Pvcreate/dev/sdb1
Vgdisplay #查看当前已经存在的VG信息
Vgextend VOLGROUP/DEV/SDB1 #扩展VolGroup
Lvdisplay #查看已经存在的LV信息,
Lvextend–l +10g/dev/mapper/volgroup-lv_root #扩展/root
E2fsck-f/dev/mapper/volgroup-lv_root #检查/root Logical Volume
Resize2fs/dev/mapper/volgroup-lv_root #执行该重设大小, refresh volgroup-lv_root disk space size
Df–h #查看挂载情况, has been enlarged
Reference documents
Http://www.cnblogs.com/einyboy/archive/2012/05/31/2528661.html

2015-08-31 Linux Add a physical disk and use LVM for capacity expansion