虚拟机软件vmware，系统ubuntu 16.04
系统存储空间不够用了，需要扩充一下，记录一下操作步骤。
先关掉虚拟机系统，打开虚拟机设置--硬件--选中“硬盘”--点击右侧的“扩展”按钮，输入想要的空间大小，点“确定”，启动虚拟机。
进入虚拟机后，打开终端，使用fdisk查看分区信息：
robot@ubuntu:~$ sudo fdisk /dev/sda Welcome to fdisk (util-linux 2.27.1). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/sda: 60 GiB, 64424509440 bytes, 125829120 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x7c03249e Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 81885183 81883136 39G 83 Linux /dev/sda2 81887230 83884031 1996802 975M 5 Extended /dev/sda5 81887232 83884031 1996800 975M 82 Linux swap / Solaris
因sda1的起始和终止与后面的sda2相连，故删除重建分区还是原大小。所以选择了新建一个分区（参数均采用默认）：
Command (m for help): n
Partition type
p primary (1 primary, 1 extended, 2 free)
l logical (numbered from 5)
Select (default p):
Using default response p.
Partition number (3,4, default 3):
First sector (83884032-125829119, default 83884032):
Last sector, +sectors or +size{K,M,G,T,P} (83884032-125829119, default 125829119):
Created a new partition 3 of type 'Linux' and of size 20 GiB.
Command (m for help): p
Disk /dev/sda: 60 GiB, 64424509440 bytes, 125829120 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x7c03249e
Device Boot Start End Sectors Size Id Type
/dev/sda1 2048 81887229 81885182 39G 83 Linux
/dev/sda2 81887230 83884031 1996802 975M 5 Extended
/dev/sda3 83884032 125829119 41945088 20G 83 Linux
/dev/sda5 81887232 83884031 1996800 975M 82 Linux swap / Solaris
给新分区创建文件系统：
sudo mkfs.ext4 /dev/sda3
mke2fs 1.42.13 (17-May-2015)
Creating filesystem with 5242880 4k blocks and 1313280 inodes
Filesystem UUID: e5f39deb-a714-48df-bf8e-67ef0a7d5948
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
挂载新分区
robot@ubuntu:~$ sudo mount /dev/sda3 /mnt/ssd1 robot@ubuntu:~$ df Filesystem 1K-blocks Used Available Use% Mounted on udev 1494984 0 1494984 0% /dev tmpfs 304952 5096 299856 2% /run /dev/sda1 40168028 33301852 4802716 88% / tmpfs 1524748 188 1524560 1% /dev/shm tmpfs 5120 4 5116 1% /run/lock tmpfs 1524748 0 1524748 0% /sys/fs/cgroup tmpfs 304952 28 304924 1% /run/user/108 tmpfs 304952 0 304952 0% /run/user/1000 /dev/sda3 20510716 44992 19400768 1% /mnt/ssd1
修改fstab，实现开机自动挂载
使用blkid查看分区UUID，并修改fstab文件（最后加一行：UUID=e5f39deb-a714-48df-bf8e-67ef0a7d5948 /mnt/ssd1 ext4 defaults 0 2）
robot@ubuntu:~$ sudo blkid /dev/sda1: UUID="05e3875f-b01d-4aac-89dd-f81f2e8b9855" TYPE="ext4" PARTUUID="7c03249e-01" /dev/sda3: UUID="e5f39deb-a714-48df-bf8e-67ef0a7d5948" TYPE="ext4" PARTUUID="7c03249e-03" /dev/sda5: UUID="2a5c42cc-859d-4491-a06d-814d6b88b06e" TYPE="swap" PARTUUID="7c03249e-05" robot@ubuntu:~$ sudo vi /etc/fstab robot@ubuntu:~$ cat /etc/fstab # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> # / was on /dev/sda1 during installation UUID=05e3875f-b01d-4aac-89dd-f81f2e8b9855 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=2a5c42cc-859d-4491-a06d-814d6b88b06e none swap sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0 UUID=e5f39deb-a714-48df-bf8e-67ef0a7d5948 /mnt/ssd1 ext4 defaults 0 2
这样就扩展了一个新分区。
感谢链接：
https://blog.csdn.net/qq_35724582/article/details/135150889
https://www.yisu.com/ask/65087426.html
标签：UUID,虚拟机,bytes,dev,ubuntu,磁盘,512 From： https://www.cnblogs.com/strongbug/p/18420510