<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="#0563C1" vlink="#954F72"> <div class="WordSection1"> Dear Maintainers,<o:p></o:p> 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.<o:p></o:p> 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<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> Is the kernel ’4.15.18’ installed from source the same as the kernel ‘4.15.0-72’ installed from cloud distro?<o:p></o:p> Could you guide me to get the correct source code responding to distro linux-image-4.15.0-72-generic?<o:p></o:p> <o:p> </o:p> git clone <a href="git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic"> git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic</a><o:p></o:p> <a href="https://packages.ubuntu.com/source/bionic/linux">https://packages.ubuntu.com/source/bionic/linux</a><o:p></o:p> <o:p> </o:p> commit 48d6312566e04b7a713cc7c15ae7dcd37efcfa95 (HEAD -> master, tag: Ubuntu-4.15.0-72.81)<o:p></o:p> Author: Stefan Bader <<a href="mailto:stefan.bader@canonical.com">stefan.bader@canonical.com</a>><o:p></o:p> Date: Tue Nov 26 12:18:37 2019 +0100<o:p></o:p> UBUNTU: Ubuntu-4.15.0-72.81<o:p></o:p> Signed-off-by: Stefan Bader <<a href="mailto:stefan.bader@canonical.com">stefan.bader@canonical.com</a>><o:p></o:p> <o:p> </o:p> Thanks.<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [ 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"<o:p></o:p> [ 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"<o:p></o:p> [ 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"<o:p></o:p> [ 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"<o:p></o:p> [ 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"<o:p></o:p> [ 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"<o:p></o:p> [ 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"<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: error opening /dev/md?*: No such file or directory<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> mdadm: No devices listed in conf file were found.<o:p></o:p> done.<o:p></o:p> Gave up waiting for root file system device. Common problems:<o:p></o:p> - Boot args (cat /proc/cmdline)<o:p></o:p> - Check rootdelay= (did the system wait long enough?)<o:p></o:p> - Missing modules (cat /proc/modules; ls /dev)<o:p></o:p> ALERT! /dev/mapper/net--arm--d05--08--vg-root does not exist. Dropping to a shell!<o:p></o:p> <o:p> </o:p> <o:p> </o:p> BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3) built-in shell (ash)<o:p></o:p> Enter 'help' for a list of built-in commands.<o:p></o:p> <o:p> </o:p> (initramfs)<o:p></o:p> (initramfs)<o:p></o:p> (initramfs) cat /proc/cmdline<o:p></o:p> 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/*<o:p></o:p> /dev/mapper/control<o:p></o:p> <o:p> </o:p> </div> </body> </html>