The solution of insufficient centos7 boot space

The solution of insufficient centos7 boot space

Reference:

Https://blog.csdn.net/wangganggelian/article/details/49848305

Native environment: centos7.4 x64

This solution uses the second method, which is feasible after testing.

Boot directory I believe that the home will not be unfamiliar, the general system will have a boot directory, it is mainly to store some system kernel configuration files, as well as startup management program GRUB directory.

1. Clean up the old kernel:

First of all, we need to check the kernel version: uname-r or uname-an is fine, as follows

[wanggang@localhost] $uname-a

Linux localhost.localdomain 3.10.0-229.20.1.el7.x86_64 # 1 SMP Tue Nov 3 19:10:07 UTC 2015 x86 "64 GNU/Linux

[wanggang@localhost] $uname-r

3.10.0-229.20.1.el7.x86_64

To check other versions of the system, use two commands: rpm-Q kernel or in rpm-qa | grep kernel to view the kernel that exists in the system.

[root@localhost wanggang] # rpm-qa | grep kernel

Kernel-devel-3.10.0-229.14.1.el7.x86_64

Kernel-tools-3.10.0-229.20.1.el7.x86_64

Kernel-devel-3.10.0-229.el7.x86_64

Kernel-3.10.0-229.20.1.el7.x86_64

Kernel-devel-3.10.0-229.20.1.el7.x86_64

Kernel-tools-libs-3.10.0-229.20.1.el7.x86_64

Kernel-headers-3.10.0-229.20.1.el7.x86_64

Abrt-addon-kerneloops-2.1.11-22.el7.centos.0.1.x86_64

[root@localhost wanggang] # rpm-Q kernel

Kernel-3.10.0-229.20.1.el7.x86_64

Since only kernel-3.10.0-229.20.1.el7.x86_64 is used, the rest can be removed.

Then uninstall the unnecessary kernel using the following yum or in the rpm command:

Yum remove kernel-3.10.0-229.14.1.el7

Or at rpm-e kernel-3.10.0-229.14.1.el7.x86_64

Restart the system to view

Remove boot and add a new boot directory.

A. Umount / boot

B. Mkdir / boot_old

C. Mount / dev/sda1 / boot_old

c. To / boot_old directory: cp-rp * / boot

e. Delete / etc/fstab table contains / boot entry

f. Restart the system to check.

The way to do this is to unmount / boot on sda1 and use the / boot directory directly, but you need to copy the files that were originally on / dev/sda1 to / boot.