NFS client issues after upgrade to kernel 5.14.21-150400.24.49.3
This document (000021021) is provided subject to the disclaimer at the end of this document.
SUSE Linux Enterprise Server for SAP Applications 15 SP4
Step 1: Downgrade to the last unaffected kernel:
# zypper in --oldpackage kernel-default-5.14.21-150400.24.46.1
Step 2: Comment out the current multiversion.kernels entry used by zypp.conf:
# sed -i 's/multiversion.kernels/#multiversion.kernels/' /etc/zypp/zypp.conf
Step 3: Append the known working kernel version to the end of the file. The version set here is matched against the filename in /boot when zypper purge-kernels is called. The following command actually adds two lines, the first being a comment:
# echo -e "# line below added per TID000021021\nmultiversion.kernels = 5.14.21-150400.24.46" >> /etc/zypp/zypp.conf
Step 4: Purge kernels (which will clean out all but the desired .46 kernel).
# zypper purge-kernels
Step 5: Regenerate GRUB2 configuration:
# grub2-mkconfig -o /boot/grub2/grub.cfg
Step 6: Manually check /boot directory to make sure kernel 5.14.21-150400.24.49 was cleaned up and /boot/grub2/grub.cfg to make sure the bootloader was properly updated with kernel 5.14.21-150400.24.46.
# ls -l /boot # less /boot/grub2/grub.cfg
Step 7: If everything looks good with step 6, reboot.
Step 8: Revert steps #2 and 3, so future kernel releases can once again be installed and booted.
This is safe assuming that the .49 kernel has been removed from your maintenance repositories. That is true for SUSE's public repositories, but for 3rd party repositories, you could check with:
zypper lu | grep kernel-default
You can manually edit /etc/zypp/zypp.conf, remove the 2 lines which step #3 added at the end of the file, and uncomment the original multiversion.kernels earlier in the file; or you can use the following two commands to undo those changes:
# sed -i 's/multiversion.kernels/#multiversion.kernels/' /etc/zypp/zypp.conf # sed -i 's/##multiversion.kernels/multiversion.kernels/' /etc/zypp/zypp.conf
If you have a problem with any of the above steps, please submit a new case to SUSE support and reference this TID.
The problems with kernel .49 are reported to SUSE Engineering and should be resolved by the next kernel release.
More info can be found in this publicly-accessible bug report logged against openSUSE 15.4.
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- Document ID:000021021
- Creation Date: 24-Mar-2023
- Modified Date:24-Mar-2023
- SUSE Linux Enterprise Server
- SUSE Linux Enterprise Server for SAP Applications
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