系统之家

添加一块新硬盘 /dev/hda

# fdisk /dev/hda
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)

依次选择n(新建分区)->t(修改分区类型选择8e,也就是LVM格式)->w(写入保存)完成,这时/dev/目录下多了一个/dev/hda1

通知系统磁盘分区的变化
# partprobe -s

创建卷
# pvcreate /dev/hda1

将新添加硬盘划到卷组VolGroup00
# vgextend VolGroup00 /dev/hda1

增加(减少)500M空间
# lvextend -L +500M /dev/VolGroup00/LogVol00
# lvextend -L -500M /dev/VolGroup00/LogVol00

显示物理卷的属性(大小,PE大小,被卷组描述符使用的空间)
# pvdisplay

显示LVM逻辑卷空间大小、读写状态和快照信息等属性
# lvdisplay

显示LVM卷组的元数据信息
# vgdisplay

让LVM调整生效
# resize2fs /dev/VolGroup00/LogVol00