1.命令汇总
# df -h /
# lsblk
# lsblk -f
# fdisk -1
# fdisk /dev/vda
Command(m for help) :m
Command(m for help) :n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p) :
Partition number (3,4, default 3) :
First sector (20971520-419430399, default 20971520):
last sector, +sectors or +sizefK M G] (20971520-419430399, default 419430399):
Command(m for help) :w
# partprobe
# lsblk
# lsblk -f
# lvm
lvm> pvcreate /dev/vda3
Physical volume "/dev/vda3" successfuly created.
lvm> pvdisplay
lvm> vgdisplay
lvm> vgextend centos /dev/vda3
lvm> vgdisplay
lvm> lvdisplay
lvm> lvextend -l +100%FREE /dev/mappper/centos-root
lwm> exit
# xfs_growfs /dev/mapper/centos-root
# df -h /
2.图文详解
2.1查看磁盘详细信息
2.2对磁盘进行分区
2.3查看磁盘挂载情况
2.4开始扩容,并查看物理卷,逻辑卷信息
2.5查看磁盘扩容前后数据
2.6将卷组剩余空间添加到逻辑卷 /dev/mapper/centos-root 也就是我们挂载的 根目录 /所对应的分区
2.7查看添加后的逻辑卷信息
2.8同步到文件系统,查看根目录大小