gdisk

GPT fdisk

gdisk /dev/sda
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): ?
b       back up GPT data to a file
c       change a partition's name
d       delete a partition
i       show detailed information on a partition
l       list known partition types
n       add a new partition
o       create a new empty GUID partition table (GPT)
p       print the partition table
q       quit without saving changes
r       recovery and transformation options (experts only)
s       sort partitions
t       change a partition's type code
v       verify disk
w       write table to disk and exit
x       extra functionality (experts only)
?       print this menu

fdisk  创建MBR分区
gdisk  创建GPT分区
parted  高级分区操作（创建、复制、调整大小等）

lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 558.9G  0 disk
├─sda1   8:1    0  1000M  0 part /boot/efi
├─sda2   8:2    0  97.7G  0 part /
├─sda3   8:3    0  15.6G  0 part [SWAP]
└─sda4   8:4    0 444.7G  0 part /panda
sr0     11:0    1  1024M  0 rom

partx同步内存信息与硬盘分区表

1、增加磁盘空间后
yum -y install gdisk
要不然会报：no tools available to resize disk with 'gpt'

2、fdisk -lu
growpart /dev/vdb 1
注意有个空格，
sfdisk: /dev/vdb: does not contain a recognized partition table 继续执行就可以了

3、 parted /dev/vdb print 查看分区类型
resize2fs /dev/vdb1

4、resize2fs: Bad magic number in super-block while trying to open /dev/vdb1
经查询资料后得知，不同格式的文件需要使用不同命令。
这个文件是xfs格式的，所以需要使用xfs_growfs命令。
xfs_growfs /jesong/
或者
xfs_growfs /dev/vdb1

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