aws - 增加硬盘空间 (enlarge linux harddisk volume )

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参考:https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/recognize-expanded-volume-linux.html

1. 登录后台, 找到硬盘, 为该硬盘扩容。

 console -> ec2 -> volumes -> 修改即可

2. df -kh 可以看到现在的硬盘容量。

同时需要查看当前硬盘的文件系统的类型(ext 系列还是ntfs .. 等等)

file -s /dev//nvme0*

$ sudo file -s /dev//nvme0*
/dev//nvme0:     ERROR: cannot read `/dev//nvme0' (Invalid argument)
/dev//nvme0n1:   DOS/MBR boot sector
/dev//nvme0n1p1: Linux rev 1.0 ext4 filesystem data, UUID=8abb4f2d-c7e0-4daf-80b5-24e1c814cf55, volume name "cloudimg-rootfs" (needs journal recovery) (extents) (64bit) (large files) (huge files)

3. lsblk  则可以看到扩容后的硬盘容量。例如:

ubuntu@cadae_mysql_slave1:~$ lsblk 
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0         7:0    0   18M  1 loop /snap/amazon-ssm-agent/1480
loop1         7:1    0 93.8M  1 loop /snap/core/8935
loop3         7:3    0 91.4M  1 loop /snap/core/8689
loop4         7:4    0   18M  1 loop /snap/amazon-ssm-agent/1566
nvme0n1     259:0    0  500G  0 disk                  ( 这里从200G -> 500G)
└─nvme0n1p1 259:1    0  200G  0 part /           (这里仍然是200G) 

4. 使用growpart为 parition扩容

( 注意下面的最后参数是 1 ,不应该是 0 )
$ sudo growpart /dev/nvme0n1 1
CHANGED: partition=1 start=2048 old: size=419428319 end=419430367 new: size=1048573919,end=1048575967

5 使用 resize2fx 为file system 扩容

$ sudo resize2fs /dev/nvme0n1p1 
resize2fs 1.44.1 (24-Mar-2018)
Filesystem at /dev/nvme0n1p1 is mounted on /; on-line resizing required
old_desc_blocks = 25, new_desc_blocks = 63
The filesystem on /dev/nvme0n1p1 is now 131071739 (4k) blocks long.

6. 查看最新的磁盘空间

$ df -kh
Filesystem      Size  Used Avail Use% Mounted on
udev             16G     0   16G   0% /dev
tmpfs           3.1G  816K  3.1G   1% /run
/dev/nvme0n1p1  485G  193G  293G  40% /

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