Upgrade Ubuntu 18.04 kernel from 4.15.0-29 to 4.15.0-72

[Guilherme G. Piccoli]

On 14/01/2020 08:13, Lijian Zhang wrote:
> Dear Maintainers,
> 
> I’m trying to upgrade the Ubuntu18.04 kernel on my server with below
> command from 4.15.0-29 to 4.15.0-72. 4.15.0-72 kernel was installed, but
> it failed to boot up with the error message at the end of this email.
> 
> sudo apt-get install linux-headers-4.15.0-72
> linux-headers-4.15.0-72-generic linux-image-4.15.0-72-generic
> linux-modules-4.15.0-72-generic linux-tools-4.15.0-72
> linux-tools-4.15.0-72-generic
> 
>  
> 
> Then I decided to upgrade kernel from source code, using below git
> repository. Kernel was updated and can boot up normally, however the
> kernel version shows ‘4.15.18’ instead of ‘/4.15.0-72.81/’ as commented
> in the git log.
> 
>  
> 
> Is the kernel ’4.15.18’ installed from source the same as the kernel
> ‘4.15.0-72’ installed from cloud distro?
> 
> Could you guide me to get the correct source code responding to distro
> linux-image-4.15.0-72-generic?
> 
>  

Hi Lijian, I think what you missed here was the
linux-modules-extra-4.15.0-72-generic package, which includes a lot of
storage drivers, that likely would allow Linux to mount your rootfs. Can
you retry by installing that?

Also, to understand the version number, can you pastebin the config file
you used to build this kernel and send the link in this thread? I don't
understand pronto why it shows 4.15.18 to you - the times when I built
the kernel, it shows usually the version of the tag (except if I want to
manually change that adding a suffix, for example).

Finally, this is not the most used list for Ubuntu kernel - I'm CCing
the kernel-team mailing list, you're likely to find more help there.
Cheers,


Guilherme


> 
> git clone
> git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic
> 
> https://packages.ubuntu.com/source/bionic/linux
> 
>  
> 
> /commit 48d6312566e04b7a713cc7c15ae7dcd37efcfa95 (HEAD -> master, tag:
> Ubuntu-4.15.0-72.81)/
> 
> /Author: Stefan Bader <stefan.bader at canonical.com
> <mailto:stefan.bader at canonical.com>>/
> 
> /Date:   Tue Nov 26 12:18:37 2019 +0100/
> 
> /    UBUNTU: Ubuntu-4.15.0-72.81/
> 
> /    Signed-off-by: Stefan Bader <stefan.bader at canonical.com
> <mailto:stefan.bader at canonical.com>>/
> 
>  
> 
> Thanks.
> 
>  
> 
>  
> 
> [   12.935501] audit: type=1400 audit(1578815124.398:2):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="/usr/bin/lxc-start" pid=1042 comm="apparmor_parser"
> 
> [   12.953642] audit: type=1400 audit(1578815124.414:3):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="lxc-container-default" pid=1039 comm="apparmor_parser"
> 
> [   12.953650] audit: type=1400 audit(1578815124.414:4):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="lxc-container-default-cgns" pid=1039 comm="apparmor_parser"
> 
> [   12.953654] audit: type=1400 audit(1578815124.414:5):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="lxc-container-default-with-mounting" pid=1039 comm="apparmor_parser"
> 
> [   12.953659] audit: type=1400 audit(1578815124.414:6):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="lxc-container-default-with-nesting" pid=1039 comm="apparmor_parser"
> 
> [   13.007718] audit: type=1400 audit(1578815124.470:7):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="/usr/lib/snapd/snap-confine" pid=1045 comm="apparmor_parser"
> 
> [   13.007726] audit: type=1400 audit(1578815124.470:8):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper"
> pid=1045 comm="apparmor_parser"
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: error opening /dev/md?*: No such file or directory
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> mdadm: No devices listed in conf file were found.
> 
> done.
> 
> Gave up waiting for root file system device.  Common problems:
> 
> - Boot args (cat /proc/cmdline)
> 
>    - Check rootdelay= (did the system wait long enough?)
> 
> - Missing modules (cat /proc/modules; ls /dev)
> 
> ALERT!  /dev/mapper/net--arm--d05--08--vg-root does not exist.  Dropping
> to a shell!
> 
>  
> 
>  
> 
> BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3) built-in shell (ash)
> 
> Enter 'help' for a list of built-in commands.
> 
>  
> 
> (initramfs)
> 
> (initramfs)
> 
> (initramfs) cat /proc/cmdline
> 
> BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic
> root=/dev/mapper/net--arm--d05--08--vg-root ro isolcpus=1-8
> nohz_full=1-8 rcu_nocbs=1-8 default_hugepa8(initramfs) ls /dev/mapper/*
> 
> /dev/mapper/control
> 
>  
> 
>