一、首先在阿里云后台通过在线扩容扩容硬盘
二、登录ecs下载阿里云gdisk工具
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# yum install gdisk -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package gdisk.x86_64 0:0.8.10-3.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved =================================================================================================================== Package Arch Version Repository Size =================================================================================================================== Installing: gdisk x86_64 0.8.10-3.el7 base 190 k Transaction Summary =================================================================================================================== Install 1 Package Total download size: 190 k Installed size: 660 k Downloading packages: gdisk-0.8.10-3.el7.x86_64.rpm | 190 kB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Warning: RPMDB altered outside of yum. Installing : gdisk-0.8.10-3.el7.x86_64 1/1 Verifying : gdisk-0.8.10-3.el7.x86_64 1/1 Installed: gdisk.x86_64 0:0.8.10-3.el7 Complete!
三、下载阿里云growpart工具
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# yum install cloud-utils-growpart -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package cloud-utils-growpart.noarch 0:0.29-5.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved =================================================================================================================== Package Arch Version Repository Size =================================================================================================================== Installing: cloud-utils-growpart noarch 0.29-5.el7 base 27 k Transaction Summary =================================================================================================================== Install 1 Package Total download size: 27 k Installed size: 61 k Downloading packages: cloud-utils-growpart-0.29-5.el7.noarch.rpm | 27 kB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : cloud-utils-growpart-0.29-5.el7.noarch 1/1 Verifying : cloud-utils-growpart-0.29-5.el7.noarch 1/1 Installed: cloud-utils-growpart.noarch 0:0.29-5.el7 Complete!
四、运行growpart进行扩容分区
首先通过df -h查看当前硬盘挂载信息
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 197G 4.9G 182G 3% / devtmpfs 7.8G 0 7.8G 0% /dev tmpfs 7.8G 0 7.8G 0% /dev/shm tmpfs 7.8G 504K 7.8G 1% /run tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup /dev/vdb1 985G 846G 89G 91% /home tmpfs 1.6G 0 1.6G 0% /run/user/0
发现/dev/vdb1对应的挂载点/home，空间使用91%，需要对/dev/vdb1 的分区进行扩容
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# growpart /dev/vdb 1 CHANGED: partition=1 start=2048 old: size=2097149952 end=2097152000 new: size=4194301919 end=4194303967 [root@iZ2ze4hqhlabzt7nqcxfxzZ home]#
五、运行resize2fs命令扩容目标分区文件系统
首先查看文件系统类型
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# cat /etc/fstab # # /etc/fstab # Created by anaconda on Thu Nov 29 03:34:10 2018 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # UUID=b98386f1-e6a8-44e3-9ce1-a50e59d9a170 / ext4 defaults 1 1 /dev/vdb1 /home ext4 defaults 0 0 [root@iZ2ze4hqhlabzt7nqcxfxzZ home]#
/dev/vdb1文件系统类型为ext4,运行如下命令
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# resize2fs /dev/vdb1 resize2fs 1.42.9 (28-Dec-2013) Filesystem at /dev/vdb1 is mounted on /home; on-line resizing required old_desc_blocks = 125, new_desc_blocks = 250 The filesystem on /dev/vdb1 is now 524287739 blocks long. [root@iZ2ze4hqhlabzt7nqcxfxzZ home]#
再次查看硬盘
[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 197G 4.9G 182G 3% / devtmpfs 7.8G 0 7.8G 0% /dev tmpfs 7.8G 0 7.8G 0% /dev/shm tmpfs 7.8G 504K 7.8G 1% /run tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup /dev/vdb1 2.0T 846G 1.1T 46% /home tmpfs 1.6G 0 1.6G 0% /run/user/0 [root@iZ2ze4hqhlabzt7nqcxfxzZ home]#
/dev/vdb1的容量已经扩围2.0T，至此在线扩容成功。