阿里云在线扩容
1、下载阿里扩展工具
yum install -y cloud-utils-growpart
2、查看现有硬盘大小
fdisk -l 可以看到最上面的是 200GB
[root@root /]# fdisk -l Disk /dev/vda: 200 GB, 200018364800 bytes, 402430400 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 Disk label type: dos Disk identifier: 0x0008d73a Device Boot Start End Blocks Id System /dev/vda1 * 2048 419428351 209713152 83 Linux
3、实际上用df -lh 查看的是 100GB
[root@root /]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 7.8G 0 7.8G 0% /dev tmpfs 7.8G 0 7.8G 0% /dev/shm tmpfs 7.8G 1.5M 7.8G 1% /run tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup /dev/vda1 100G 95G 5G 95% / tmpfs 1.6G 0 1.6G 0% /run/user/0
4、使用
运行 growpart <DeviceName> <PartionNumber>
命令,调用 growpart
为需要扩容的云盘和对应的第几个分区扩容。
growpart /dev/vda 1
,表示为系统盘的第一个分区(/dev/vda1)扩容。
[root@root /]# growpart /dev/vda 1 CHANGED: partition=1 start=2048 old: size=104855519 end=104857567 new: size=402230400 end=402430400
5、重设分区大小
[root@root /]# resize2fs /dev/vda1 resize2fs 1.42.9 (28-Dec-2013) Filesystem at /dev/vda1 is mounted on /; on-line resizing required old_desc_blocks = 3, new_desc_blocks = 4 The filesystem on /dev/vda1 is now 13106939 blocks long.
6、打完收工