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阿里云ecs 硬盘在线扩容详细教程

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1、首先在阿里云后台通过在线扩容扩容硬盘 。

2、登录ecs下载阿里云gdisk工具 。

[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# yum install gdisk -yLoaded plugins: fastestmirrorLoading mirror speeds from cached hostfileResolving Dependencies--> Running transaction check---> Package gdisk.x86_64 0:0.8.10-3.el7 will be installed--> Finished Dependency ResolutionDependencies Resolved=================================================================================================================== Package                  Arch                      Version                          Repository               Size===================================================================================================================Installing: gdisk                    x86_64                    0.8.10-3.el7                     base                    190 kTransaction Summary===================================================================================================================Install  1 PackageTotal download size: 190 kInstalled size: 660 kDownloading packages:gdisk-0.8.10-3.el7.x86_64.rpm                                                               | 190 kB  00:00:00     Running transaction checkRunning transaction testTransaction test succeededRunning transactionWarning: 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!

3、下载阿里云growpart工具 。

[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# yum install cloud-utils-growpart -yLoaded plugins: fastestmirrorLoading mirror speeds from cached hostfileResolving Dependencies--> Running transaction check---> Package cloud-utils-growpart.noarch 0:0.29-5.el7 will be installed--> Finished Dependency ResolutionDependencies Resolved=================================================================================================================== Package                              Arch                   Version                    Repository            Size===================================================================================================================Installing: cloud-utils-growpart                 noarch                 0.29-5.el7                 base                  27 kTransaction Summary===================================================================================================================Install  1 PackageTotal download size: 27 kInstalled size: 61 kDownloading packages:cloud-utils-growpart-0.29-5.el7.noarch.rpm                                                  |  27 kB  00:00:00     Running transaction checkRunning transaction testTransaction test succeededRunning 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!

4、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 -hFilesystem      Size  Used Avail Use% Mounted on/dev/vda1       197G  4.9G  182G   3% /devtmpfs        7.8G     0  7.8G   0% /devtmpfs           7.8G     0  7.8G   0% /dev/shmtmpfs           7.8G  504K  7.8G   1% /runtmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup/dev/vdb1       985G  846G   89G  91% /hometmpfs           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 1CHANGED: partition=1 start=2048 old: size=2097149952 end=2097152000 new: size=4194301919 end=4194303967[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# 

5、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/vdb1resize2fs 1.42.9 (28-Dec-2013)Filesystem at /dev/vdb1 is mounted on /home; on-line resizing requiredold_desc_blocks = 125, new_desc_blocks = 250The filesystem on /dev/vdb1 is now 524287739 blocks long.[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# 

再次查看硬盘 。

[root@iZ2ze4hqhlabzt7nqcxfxzZ home]# df -hFilesystem      Size  Used Avail Use% Mounted on/dev/vda1       197G  4.9G  182G   3% /devtmpfs        7.8G     0  7.8G   0% /devtmpfs           7.8G     0  7.8G   0% /dev/shmtmpfs           7.8G  504K  7.8G   1% /runtmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup/dev/vdb1       2.0T  846G  1.1T  46% /hometmpfs           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.

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原文地址:https://www.cnblogs.com/sky-cheng/p/14626373.html 。

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