UbuntuやDebianにおいて古いKernelイメージの削除方法

UbuntuやDebianを運用していくと、古いkernelのイメージが溜まっていきます。気持ち悪いので古いのは消します。

まずは、一応、最新のkernelでシステムが起動していることを確認しておきましょう。

root@dell /h/matsu# ls /boot/

System.map-5.0.0-37-generic System.map-5.3.0-26-generic config-5.3.0-24-generic efi/ initrd.img-5.0.0-37-generic initrd.img-5.3.0-26-generic vmlinuz-5.0.0-37-generic vmlinuz-5.3.0-26-generic

System.map-5.3.0-24-generic config-5.0.0-37-generic config-5.3.0-26-generic grub/ initrd.img-5.3.0-24-generic lost+found/ vmlinuz-5.3.0-24-generic

root@dell /h/matsu# dpkg -l |grep kernel

ii kmod 26-1ubuntu1 amd64 tools for managing Linux kernel modules

ii libaio1:amd64 0.3.112-5 amd64 Linux kernel AIO access library - shared library

ii libdrm-amdgpu1:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to amdgpu-specific kernel DRM services -- runtime

ii libdrm-common 2.4.99-1ubuntu1 all Userspace interface to kernel DRM services -- common files

ii libdrm-intel1:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to intel-specific kernel DRM services -- runtime

ii libdrm-nouveau2:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to nouveau-specific kernel DRM services -- runtime

ii libdrm-radeon1:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to radeon-specific kernel DRM services -- runtime

ii libdrm2:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to kernel DRM services -- runtime

ii linux-firmware 1.183.3 all Firmware for Linux kernel drivers

ii linux-generic 5.3.0.26.30 amd64 Complete Generic Linux kernel and headers

ii linux-headers-5.3.0-24 5.3.0-24.26 all Header files related to Linux kernel version 5.3.0

ii linux-headers-5.3.0-24-generic 5.3.0-24.26 amd64 Linux kernel headers for version 5.3.0 on 64 bit x86 SMP

ii linux-headers-5.3.0-26 5.3.0-26.28 all Header files related to Linux kernel version 5.3.0

ii linux-headers-5.3.0-26-generic 5.3.0-26.28 amd64 Linux kernel headers for version 5.3.0 on 64 bit x86 SMP

ii linux-headers-generic 5.3.0.26.30 amd64 Generic Linux kernel headers

rc linux-image-4.15.0-72-generic 4.15.0-72.81 amd64 Signed kernel image generic

rc linux-image-4.4.0-170-generic 4.4.0-170.199 amd64 Signed kernel image generic

ii linux-image-5.0.0-37-generic 5.0.0-37.40 amd64 Signed kernel image generic

ii linux-image-5.3.0-24-generic 5.3.0-24.26 amd64 Signed kernel image generic

ii linux-image-5.3.0-26-generic 5.3.0-26.28 amd64 Signed kernel image generic

ii linux-image-generic 5.3.0.26.30 amd64 Generic Linux kernel image

rc linux-modules-4.15.0-72-generic 4.15.0-72.81 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP

rc linux-modules-4.4.0-170-generic 4.4.0-170.199 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP

ii linux-modules-5.0.0-37-generic 5.0.0-37.40 amd64 Linux kernel extra modules for version 5.0.0 on 64 bit x86 SMP

ii linux-modules-5.3.0-24-generic 5.3.0-24.26 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP

ii linux-modules-5.3.0-26-generic 5.3.0-26.28 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP

rc linux-modules-extra-4.15.0-72-generic 4.15.0-72.81 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP

rc linux-modules-extra-4.4.0-170-generic 4.4.0-170.199 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP

ii linux-modules-extra-5.0.0-37-generic 5.0.0-37.40 amd64 Linux kernel extra modules for version 5.0.0 on 64 bit x86 SMP

ii linux-modules-extra-5.3.0-24-generic 5.3.0-24.26 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP

ii linux-modules-extra-5.3.0-26-generic 5.3.0-26.28 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP

ii linux-signed-generic 5.3.0.26.30 amd64 Complete Signed Generic Linux kernel and headers (dummy transitional package)

ii rsyslog 8.1901.0-1ubuntu4 amd64 reliable system and kernel logging daemon

root@dell /h/matsu# ls /boot/ System.map-5.0.0-37-generic System.map-5.3.0-26-generic config-5.3.0-24-generic efi/ initrd.img-5.0.0-37-generic initrd.img-5.3.0-26-generic vmlinuz-5.0.0-37-generic vmlinuz-5.3.0-26-generic System.map-5.3.0-24-generic config-5.0.0-37-generic config-5.3.0-26-generic grub/ initrd.img-5.3.0-24-generic lost+found/ vmlinuz-5.3.0-24-generic root@dell /h/matsu# dpkg -l |grep kernel ii kmod 26-1ubuntu1 amd64 tools for managing Linux kernel modules ii libaio1:amd64 0.3.112-5 amd64 Linux kernel AIO access library - shared library ii libdrm-amdgpu1:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to amdgpu-specific kernel DRM services -- runtime ii libdrm-common 2.4.99-1ubuntu1 all Userspace interface to kernel DRM services -- common files ii libdrm-intel1:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to intel-specific kernel DRM services -- runtime ii libdrm-nouveau2:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to nouveau-specific kernel DRM services -- runtime ii libdrm-radeon1:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to radeon-specific kernel DRM services -- runtime ii libdrm2:amd64 2.4.99-1ubuntu1 amd64 Userspace interface to kernel DRM services -- runtime ii linux-firmware 1.183.3 all Firmware for Linux kernel drivers ii linux-generic 5.3.0.26.30 amd64 Complete Generic Linux kernel and headers ii linux-headers-5.3.0-24 5.3.0-24.26 all Header files related to Linux kernel version 5.3.0 ii linux-headers-5.3.0-24-generic 5.3.0-24.26 amd64 Linux kernel headers for version 5.3.0 on 64 bit x86 SMP ii linux-headers-5.3.0-26 5.3.0-26.28 all Header files related to Linux kernel version 5.3.0 ii linux-headers-5.3.0-26-generic 5.3.0-26.28 amd64 Linux kernel headers for version 5.3.0 on 64 bit x86 SMP ii linux-headers-generic 5.3.0.26.30 amd64 Generic Linux kernel headers rc linux-image-4.15.0-72-generic 4.15.0-72.81 amd64 Signed kernel image generic rc linux-image-4.4.0-170-generic 4.4.0-170.199 amd64 Signed kernel image generic ii linux-image-5.0.0-37-generic 5.0.0-37.40 amd64 Signed kernel image generic ii linux-image-5.3.0-24-generic 5.3.0-24.26 amd64 Signed kernel image generic ii linux-image-5.3.0-26-generic 5.3.0-26.28 amd64 Signed kernel image generic ii linux-image-generic 5.3.0.26.30 amd64 Generic Linux kernel image rc linux-modules-4.15.0-72-generic 4.15.0-72.81 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP rc linux-modules-4.4.0-170-generic 4.4.0-170.199 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP ii linux-modules-5.0.0-37-generic 5.0.0-37.40 amd64 Linux kernel extra modules for version 5.0.0 on 64 bit x86 SMP ii linux-modules-5.3.0-24-generic 5.3.0-24.26 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP ii linux-modules-5.3.0-26-generic 5.3.0-26.28 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP rc linux-modules-extra-4.15.0-72-generic 4.15.0-72.81 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP rc linux-modules-extra-4.4.0-170-generic 4.4.0-170.199 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP ii linux-modules-extra-5.0.0-37-generic 5.0.0-37.40 amd64 Linux kernel extra modules for version 5.0.0 on 64 bit x86 SMP ii linux-modules-extra-5.3.0-24-generic 5.3.0-24.26 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP ii linux-modules-extra-5.3.0-26-generic 5.3.0-26.28 amd64 Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP ii linux-signed-generic 5.3.0.26.30 amd64 Complete Signed Generic Linux kernel and headers (dummy transitional package) ii rsyslog 8.1901.0-1ubuntu4 amd64 reliable system and kernel logging daemon

root@dell /h/matsu# ls /boot/
System.map-5.0.0-37-generic  System.map-5.3.0-26-generic  config-5.3.0-24-generic  efi/   initrd.img-5.0.0-37-generic  initrd.img-5.3.0-26-generic  vmlinuz-5.0.0-37-generic  vmlinuz-5.3.0-26-generic
System.map-5.3.0-24-generic  config-5.0.0-37-generic      config-5.3.0-26-generic  grub/  initrd.img-5.3.0-24-generic  lost+found/                  vmlinuz-5.3.0-24-generic
root@dell /h/matsu# dpkg -l |grep kernel
ii  kmod                                  26-1ubuntu1                            amd64        tools for managing Linux kernel modules
ii  libaio1:amd64                         0.3.112-5                              amd64        Linux kernel AIO access library - shared library
ii  libdrm-amdgpu1:amd64                  2.4.99-1ubuntu1                        amd64        Userspace interface to amdgpu-specific kernel DRM services -- runtime
ii  libdrm-common                         2.4.99-1ubuntu1                        all          Userspace interface to kernel DRM services -- common files
ii  libdrm-intel1:amd64                   2.4.99-1ubuntu1                        amd64        Userspace interface to intel-specific kernel DRM services -- runtime
ii  libdrm-nouveau2:amd64                 2.4.99-1ubuntu1                        amd64        Userspace interface to nouveau-specific kernel DRM services -- runtime
ii  libdrm-radeon1:amd64                  2.4.99-1ubuntu1                        amd64        Userspace interface to radeon-specific kernel DRM services -- runtime
ii  libdrm2:amd64                         2.4.99-1ubuntu1                        amd64        Userspace interface to kernel DRM services -- runtime
ii  linux-firmware                        1.183.3                                all          Firmware for Linux kernel drivers
ii  linux-generic                         5.3.0.26.30                            amd64        Complete Generic Linux kernel and headers
ii  linux-headers-5.3.0-24                5.3.0-24.26                            all          Header files related to Linux kernel version 5.3.0
ii  linux-headers-5.3.0-24-generic        5.3.0-24.26                            amd64        Linux kernel headers for version 5.3.0 on 64 bit x86 SMP
ii  linux-headers-5.3.0-26                5.3.0-26.28                            all          Header files related to Linux kernel version 5.3.0
ii  linux-headers-5.3.0-26-generic        5.3.0-26.28                            amd64        Linux kernel headers for version 5.3.0 on 64 bit x86 SMP
ii  linux-headers-generic                 5.3.0.26.30                            amd64        Generic Linux kernel headers
rc  linux-image-4.15.0-72-generic         4.15.0-72.81                           amd64        Signed kernel image generic
rc  linux-image-4.4.0-170-generic         4.4.0-170.199                          amd64        Signed kernel image generic
ii  linux-image-5.0.0-37-generic          5.0.0-37.40                            amd64        Signed kernel image generic
ii  linux-image-5.3.0-24-generic          5.3.0-24.26                            amd64        Signed kernel image generic
ii  linux-image-5.3.0-26-generic          5.3.0-26.28                            amd64        Signed kernel image generic
ii  linux-image-generic                   5.3.0.26.30                            amd64        Generic Linux kernel image
rc  linux-modules-4.15.0-72-generic       4.15.0-72.81                           amd64        Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP
rc  linux-modules-4.4.0-170-generic       4.4.0-170.199                          amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii  linux-modules-5.0.0-37-generic        5.0.0-37.40                            amd64        Linux kernel extra modules for version 5.0.0 on 64 bit x86 SMP
ii  linux-modules-5.3.0-24-generic        5.3.0-24.26                            amd64        Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP
ii  linux-modules-5.3.0-26-generic        5.3.0-26.28                            amd64        Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP
rc  linux-modules-extra-4.15.0-72-generic 4.15.0-72.81                           amd64        Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP
rc  linux-modules-extra-4.4.0-170-generic 4.4.0-170.199                          amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii  linux-modules-extra-5.0.0-37-generic  5.0.0-37.40                            amd64        Linux kernel extra modules for version 5.0.0 on 64 bit x86 SMP
ii  linux-modules-extra-5.3.0-24-generic  5.3.0-24.26                            amd64        Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP
ii  linux-modules-extra-5.3.0-26-generic  5.3.0-26.28                            amd64        Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP
ii  linux-signed-generic                  5.3.0.26.30                            amd64        Complete Signed Generic Linux kernel and headers (dummy transitional package)
ii  rsyslog                               8.1901.0-1ubuntu4                      amd64        reliable system and kernel logging daemon

sudo apt-get --purge autoremove を打つだけです。

root@dell /h/matsu# sudo apt-get --purge autoremove

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages will be REMOVED:

linux-image-5.0.0-37-generic* linux-modules-5.0.0-37-generic* linux-modules-extra-5.0.0-37-generic*

0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.

After this operation, 253 MB disk space will be freed.

Do you want to continue? [Y/n] y

(Reading database ... 126511 files and directories currently installed.)

Removing linux-modules-extra-5.0.0-37-generic (5.0.0-37.40) ...

Removing linux-image-5.0.0-37-generic (5.0.0-37.40) ...

/etc/kernel/postrm.d/initramfs-tools:

update-initramfs: Deleting /boot/initrd.img-5.0.0-37-generic

/etc/kernel/postrm.d/x-grub-legacy-ec2:

Searching for GRUB installation directory ... found: /boot/grub

Searching for default file ... found: /boot/grub/default

Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst

Searching for splash image ... none found, skipping ...

Found kernel: /vmlinuz-5.3.0-26-generic

Found kernel: /vmlinuz-5.3.0-24-generic

Found kernel: /vmlinuz-5.0.0-37-generic

Replacing config file /run/grub/menu.lst with new version

Found kernel: /vmlinuz-5.3.0-26-generic

Found kernel: /vmlinuz-5.3.0-24-generic

Replacing config file /run/grub/menu.lst with new version

Updating /boot/grub/menu.lst ... done

/etc/kernel/postrm.d/zz-update-grub:

Sourcing file `/etc/default/grub'

Sourcing file `/etc/default/grub.d/init-select.cfg'

Generating grub configuration file ...

Found linux image: /boot/vmlinuz-5.3.0-26-generic

Found initrd image: /boot/initrd.img-5.3.0-26-generic

Found linux image: /boot/vmlinuz-5.3.0-24-generic

Found initrd image: /boot/initrd.img-5.3.0-24-generic

done

Removing linux-modules-5.0.0-37-generic (5.0.0-37.40) ...

(Reading database ... 120073 files and directories currently installed.)

Purging configuration files for linux-modules-5.0.0-37-generic (5.0.0-37.40) ...

Purging configuration files for linux-modules-extra-5.0.0-37-generic (5.0.0-37.40) ...

dpkg: warning: while removing linux-modules-extra-5.0.0-37-generic, directory '/lib/modules/5.0.0-37-generic/kernel/drivers/net/wireless' not empty so not removed

Purging configuration files for linux-image-5.0.0-37-generic (5.0.0-37.40) ...

rmdir: failed to remove '/lib/modules/5.0.0-37-generic': Directory not empty

root@dell /h/matsu# sudo apt-get --purge autoremove Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: linux-image-5.0.0-37-generic* linux-modules-5.0.0-37-generic* linux-modules-extra-5.0.0-37-generic* 0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded. After this operation, 253 MB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 126511 files and directories currently installed.) Removing linux-modules-extra-5.0.0-37-generic (5.0.0-37.40) ... Removing linux-image-5.0.0-37-generic (5.0.0-37.40) ... /etc/kernel/postrm.d/initramfs-tools: update-initramfs: Deleting /boot/initrd.img-5.0.0-37-generic /etc/kernel/postrm.d/x-grub-legacy-ec2: Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... found: /boot/grub/default Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst Searching for splash image ... none found, skipping ... Found kernel: /vmlinuz-5.3.0-26-generic Found kernel: /vmlinuz-5.3.0-24-generic Found kernel: /vmlinuz-5.0.0-37-generic Replacing config file /run/grub/menu.lst with new version Found kernel: /vmlinuz-5.3.0-26-generic Found kernel: /vmlinuz-5.3.0-24-generic Replacing config file /run/grub/menu.lst with new version Updating /boot/grub/menu.lst ... done /etc/kernel/postrm.d/zz-update-grub: Sourcing file `/etc/default/grub' Sourcing file `/etc/default/grub.d/init-select.cfg' Generating grub configuration file ... Found linux image: /boot/vmlinuz-5.3.0-26-generic Found initrd image: /boot/initrd.img-5.3.0-26-generic Found linux image: /boot/vmlinuz-5.3.0-24-generic Found initrd image: /boot/initrd.img-5.3.0-24-generic done Removing linux-modules-5.0.0-37-generic (5.0.0-37.40) ... (Reading database ... 120073 files and directories currently installed.) Purging configuration files for linux-modules-5.0.0-37-generic (5.0.0-37.40) ... Purging configuration files for linux-modules-extra-5.0.0-37-generic (5.0.0-37.40) ... dpkg: warning: while removing linux-modules-extra-5.0.0-37-generic, directory '/lib/modules/5.0.0-37-generic/kernel/drivers/net/wireless' not empty so not removed Purging configuration files for linux-image-5.0.0-37-generic (5.0.0-37.40) ... rmdir: failed to remove '/lib/modules/5.0.0-37-generic': Directory not empty

root@dell /h/matsu# sudo apt-get --purge autoremove

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
linux-image-5.0.0-37-generic* linux-modules-5.0.0-37-generic* linux-modules-extra-5.0.0-37-generic*
0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.
After this operation, 253 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 126511 files and directories currently installed.)
Removing linux-modules-extra-5.0.0-37-generic (5.0.0-37.40) ...
Removing linux-image-5.0.0-37-generic (5.0.0-37.40) ...
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-5.0.0-37-generic
/etc/kernel/postrm.d/x-grub-legacy-ec2:
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /vmlinuz-5.3.0-26-generic
Found kernel: /vmlinuz-5.3.0-24-generic
Found kernel: /vmlinuz-5.0.0-37-generic
Replacing config file /run/grub/menu.lst with new version
Found kernel: /vmlinuz-5.3.0-26-generic
Found kernel: /vmlinuz-5.3.0-24-generic
Replacing config file /run/grub/menu.lst with new version
Updating /boot/grub/menu.lst ... done

/etc/kernel/postrm.d/zz-update-grub:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.3.0-26-generic
Found initrd image: /boot/initrd.img-5.3.0-26-generic
Found linux image: /boot/vmlinuz-5.3.0-24-generic
Found initrd image: /boot/initrd.img-5.3.0-24-generic
done
Removing linux-modules-5.0.0-37-generic (5.0.0-37.40) ...
(Reading database ... 120073 files and directories currently installed.)
Purging configuration files for linux-modules-5.0.0-37-generic (5.0.0-37.40) ...
Purging configuration files for linux-modules-extra-5.0.0-37-generic (5.0.0-37.40) ...
dpkg: warning: while removing linux-modules-extra-5.0.0-37-generic, directory '/lib/modules/5.0.0-37-generic/kernel/drivers/net/wireless' not empty so not removed
Purging configuration files for linux-image-5.0.0-37-generic (5.0.0-37.40) ...
rmdir: failed to remove '/lib/modules/5.0.0-37-generic': Directory not empty

古いKernelが消えました。