Linux基础——BClinuxEuler21.10内核降级
Linux基础——BClinuxEuler21.10内核降级
一、准备回退内核安装包
[root@harbor kernel]# ls
kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64.rpm kernel-devel-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64.rpm
kernel-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64.rpm kernel-tools-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64.rpm
kernel-devel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64.rpm kernel-tools-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64.rpm
二、开始回退安装
[root@harbor kernel]# yum downgrade kernel*-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64.rpm
Last metadata expiration check: 2:04:47 ago on Tue 06 Aug 2024 02:20:59 PM CST.
Dependencies resolved.
=================================================================================================================================
Package Architecture Version Repository Size
=================================================================================================================================
Installing:
kernel x86_64 4.19.90-2107.6.0.0192.8.oe1.bclinux @commandline 43 M
Downgrading:
kernel-devel x86_64 4.19.90-2107.6.0.0192.8.oe1.bclinux @commandline 14 M
kernel-tools x86_64 4.19.90-2107.6.0.0192.8.oe1.bclinux @commandline 448 k
Transaction Summary
=================================================================================================================================
Install 1 Package
Downgrade 2 Packages
Total size: 57 M
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Running scriptlet: kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 1/1
Installing : kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 1/5
Running scriptlet: kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 1/5
Downgrading : kernel-tools-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 2/5
Running scriptlet: kernel-tools-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 2/5
Downgrading : kernel-devel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 3/5
Running scriptlet: kernel-devel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 3/5
Cleanup : kernel-devel-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 4/5
Running scriptlet: kernel-tools-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 5/5
Cleanup : kernel-tools-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 5/5
Running scriptlet: kernel-tools-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 5/5
Running scriptlet: kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 5/5
Running scriptlet: kernel-tools-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 5/5
Verifying : kernel-devel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 1/5
Verifying : kernel-devel-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 2/5
Verifying : kernel-tools-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 3/5
Verifying : kernel-tools-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64 4/5
Verifying : kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 5/5
Downgraded:
kernel-devel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64 kernel-tools-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64
Installed:
kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64
Complete!
三、确认回退包已安装
[root@harbor kernel]# rpm -qa | grep kernel
kernel-4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64
texlive-l3kernel-svn48022-24.oe1.noarch
kernel-tools-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64
kernel-devel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64
kernel-4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64
四、查看boot目录下的所有内核
[root@harbor kernel]# cat /boot/grub2/grub.cfg | grep "menuentry"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
menuentry_id_option=""
export menuentry_id_option
menuentry 'BigCloud Enterprise Linux (4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64) 21.10 (LTS-SP2)' --class bigcloud --class gnu-l inux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-4.19.90-2107.6.0.0227.28.oe1.bclinux.x86_64-advanced-16 24fa73-8ed0-4870-bfc6-d98748252a89' {
menuentry 'BigCloud Enterprise Linux (4.19.90-2107.6.0.0251.43.oe1.bclinux.x86_64) 21.10 (LTS-SP2)' --class bigcloud --class gnu- linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-4.19.90-2107.6.0.0227.28.oe1.bclinux.x86_64-advanced-1 624fa73-8ed0-4870-bfc6-d98748252a89' {
menuentry 'BigCloud Enterprise Linux (0-rescue-d24f36113bef4feb89c6b7fe93b524d4) 21.10 (LTS-SP2)' --class bigcloud --class gnu-li nux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-d24f36113bef4feb89c6b7fe93b524d4-advanced-1624f a73-8ed0-4870-bfc6-d98748252a89' {
五、设置默认内核
[root@harbor kernel]# grub2-set-default "BigCloud Enterprise Linux (4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64) 21.10 (LTS-SP2)"" > ^C
[root@harbor kernel]# grub2-set-default "BigCloud Enterprise Linux (4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64) 21.10 (LTS-SP2)"
六、确认设置默认是否成功
[root@harbor kernel]# grub2-editenv list
saved_entry=BigCloud Enterprise Linux (4.19.90-2107.6.0.0192.8.oe1.bclinux.x86_64) 21.10 (LTS-SP2)
boot_success=0
boot_indeterminate=0
七、重启应用回退内核
[root@harbor kernel]# reboot
