AWS 磁盘 在线扩容（NVME 磁盘）

AWS 磁盘 在线扩容（NVME 磁盘）

• 安装扩容工具

# growpart 为分区表修改工具
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
yum search growpart
yum install cloud-utils-growpart

1.NVME 磁盘扩容

• 操作步骤

1.AWS 控制台扩容磁盘卷大小
2.磁盘卷扩容完成后登录主机查看磁盘卷扩容结果
3.扩容磁盘卷大小
4.扩容磁盘分区大小

• 操作命令：

# 查看磁盘信息
df -h
lsblk
file -s /dev/nvme?n*

-------------------
# 修改磁盘分区表（根磁盘）
growpart /dev/nvme1n1 1
lsblk

## 扩容分区空间（根磁盘）
resize2fs  /dev/nvme1n1p1
df -h

-------------------
# 修改磁盘分区表（第二磁盘）
growpart /dev/nvme0n1 1
lsblk

## 扩容分区空间（第二磁盘）
resize2fs /dev/nvme0n1p1
df -h
--------------------

• 实例演示：根分区由 20GB 扩容到 100GB

# 扩容前检查磁盘状态
--------------------
root@zuiyoujie:/opt/tools# file -s /dev/nvme?n*
/dev/nvme0n1:   DOS/MBR boot sector
/dev/nvme0n1p1: Linux rev 1.0 ext4 filesystem data, UUID=01909065-0362-439c-9af2-29d0fc837f6b, volume name "cloudimg-rootfs"
(needs journal recovery) (extents)
(large files) (huge files)

root@zuiyoujie:/opt/tools# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0         7:0    0 89.1M  1 loop /snap/core/8213
loop1         7:1    0 89.1M  1 loop /snap/core/8268
loop2         7:2    0   18M  1 loop /snap/amazon-ssm-agent/1480
loop3         7:3    0   18M  1 loop /snap/amazon-ssm-agent/1455
nvme0n1     259:0    0  100G  0 disk                  # 磁盘大小已经修改为 100GB
└─nvme0n1p1 259:1    0   20G  0 part /               # 分区大小为 20GB

root@zuiyoujie:/opt/tools# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            3.8G     0  3.8G   0% /dev
tmpfs           764M   78M  687M  11% /run
/dev/nvme0n1p1   20G   15G  5.1G  74% /
tmpfs           3.8G     0  3.8G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           3.8G     0  3.8G   0% /sys/fs/cgroup
/dev/loop0       90M   90M     0 100% /snap/core/8213
/dev/loop1       90M   90M     0 100% /snap/core/8268
/dev/loop2       18M   18M     0 100% /snap/amazon-ssm-agent/1480
/dev/loop3       18M   18M     0 100% /snap/amazon-ssm-agent/1455
tmpfs           764M     0  764M   0% /run/user/0

# 修改分区表
--------------------
root@zuiyoujie:/opt/tools# growpart /dev/nvme0n1 1
CHANGED: partition=1 start=2048 old: size=41940959 end=41943007 new: size=209713119,end=209715167

root@zuiyoujie:/opt/tools# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0         7:0    0 89.1M  1 loop /snap/core/8213
loop1         7:1    0 89.1M  1 loop /snap/core/8268
loop2         7:2    0   18M  1 loop /snap/amazon-ssm-agent/1480
loop3         7:3    0   18M  1 loop /snap/amazon-ssm-agent/1455
nvme0n1     259:0    0  100G  0 disk
└─nvme0n1p1 259:1    0  100G  0 part /              # 分区表已经扩容（识别）为 100GB

root@zuiyoujie:/opt/tools# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            3.8G     0  3.8G   0% /dev
tmpfs           764M   78M  687M  11% /run
/dev/nvme0n1p1   20G   15G  5.1G  74% /               # 未执行 resize2fs 命令，磁盘容量未增加
tmpfs           3.8G     0  3.8G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           3.8G     0  3.8G   0% /sys/fs/cgroup
/dev/loop0       90M   90M     0 100% /snap/core/8213
/dev/loop1       90M   90M     0 100% /snap/core/8268
/dev/loop2       18M   18M     0 100% /snap/amazon-ssm-agent/1480
/dev/loop3       18M   18M     0 100% /snap/amazon-ssm-agent/1455
tmpfs           764M     0  764M   0% /run/user/0

root@zuiyoujie:/opt/tools# resize2fs /dev/nvme0n1p1   # 执行扩容命令，扩容磁盘
resize2fs 1.42.13 (17-May-2015)
Filesystem at /dev/nvme0n1p1 is mounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 7
The filesystem on /dev/nvme0n1p1 is now 26214139 (4k) blocks long.

root@zuiyoujie:/opt/tools# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            3.8G     0  3.8G   0% /dev
tmpfs           764M   78M  687M  11% /run
/dev/nvme0n1p1   97G   15G   83G  15% /              # 实际分区大小为 100GB
tmpfs           3.8G     0  3.8G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           3.8G     0  3.8G   0% /sys/fs/cgroup
/dev/loop0       90M   90M     0 100% /snap/core/8213
/dev/loop1       90M   90M     0 100% /snap/core/8268
/dev/loop2       18M   18M     0 100% /snap/amazon-ssm-agent/1480
/dev/loop3       18M   18M     0 100% /snap/amazon-ssm-agent/1455
tmpfs           764M     0  764M   0% /run/user/0
------------------------------------------------

2.参考链接

• 扩展卷之后扩容文件系统（分区）容量

https://docs.aws.amazon.com/zh_cn/AWSEC2/latest/UserGuide/recognize-expanded-volume-linux.html#extend-linux-volume-partition