AlmaLinux Wiki
# last updated: 2024-09-20

# ELevate Frequent Issues

These are the ELevate project issues the AlmaLinux team and community are currently working on together. You can find here the most frequent problems and guidance steps on how to solve them.

# Leapp upgrade error caused by important modules from kernel drivers

Proceeding with the upgrade, you can get the "Detected loaded kernel drivers, which have been removed" error.

The issue can be caused by the mentioned modules:

  • mptbase
  • mptscsih
  • mptspi

Follow these steps to resolve the issue:

  • First, you need to backup initramfs. Initramfs boots any Linux OS and mounts the root filesystem. It contains kernel modules and initial scripts. Use root or sudo user credential to run this command:
cp /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.backup
  • Use the Initramfs infrastructure dracut to include all drivers to build a generic initramfs:
dracut -N -f

  • After the previous step is completed, run the shutdown command to stop the system.

  • Click Virtual Machines and choose the Edit Settings option and change SCSI Controller type to VMware Paravirtual. Save changes.

  • Now, you can boot your system and run one more dracut command to regenerate initramfs.

dracut -f --regenerate-all

# Leapp upgrade error "More space needed on the / filesystem"

If the leapp upgrade step fails with the "More space needed on the / filesystem" error, there could be two separate problems:

  1. Not enough free space on the /var partition. In that case, it is necessary to expand the /var partition:
  2. For a partition that uses XFS, instruct leapp to use a bigger overlay file by setting the environment variable before running leapp command (default is 2048 MB) by setting the LEAPP_OVL_SIZE environment variable:
export LEAPP_OVL_SIZE=4096

# sssd fails after upgrade

After upgrading, there may be problems with sssd.

Follow these steps to resolve the issue:

  • Delete all files in /var/lib/sssd/db/:
rm -f /var/lib/sssd/db/
  • Restart sssd service:
systemctl restart sssd

# ELevate fails due to initramfs missing a module

When upgrading a CentOS 7 machine to an EL8 derivative, after completing the leapp upgrade step the process can fail during reboot showing an initramfs error. This is possible due to the lack of support for certain drives in EL8 that were supported in EL7.

WARNING

These steps are helpful at upgrading to AlmaLinux OS version 8.8 or a lower version if necessary. Once the upgrade is complete, you can upgrade your AlmaLinux system to the latest version 8.10 by running the following command:"

dnf update

To resolve this issue, please, follow the steps below:

  • Find out what module is missing.
  • Check if it's possible to use such a package from elrepo.org (opens new window). In order not to get any dependency errors, we recommend looking for a package for EL version 8.8.
  • For the same reason, we recommend upgrading your CentOS 7 machine to AlmaLinux OS version 8.8. To do so, you need to navigate to the /etc/leapp/files/ directory and edit the leapp_upgrade_repositories.repo to lower the AlmaLinux version in baseurl/mirror to 8.8.
  • If the package is present in ELRepo, modify the leapp code to add a needed driver to ELevate initramfs.
    • Navigate to the /etc/leapp/files/ directory and add the ELRepo repository to the leapp_upgrade_repositories.repo file:
      [elrepo]
name=ELRepo.org Community Enterprise Linux Repository - el8
baseurl=http://elrepo.org/linux/elrepo/el8/$basearch/
        http://mirrors.coreix.net/elrepo/elrepo/el8/$basearch/
        http://mirror.rackspace.com/elrepo/elrepo/el8/$basearch/
        http://linux-mirrors.fnal.gov/linux/elrepo/elrepo/el8/$basearch/
mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo.el8
enabled=1
countme=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
    • Navigate to the /usr/share/leapp-repository/repositories/system_upgrade/common/actors/targetuserspacecreator/libraries/ directory and modify the following line in the userspacegen.py file to contain kernel modules the needed driver:
      self.packages = {'dnf', 'dnf-command(config-manager)', 'kernel-modules', 'needed_driver_name_version'}
      An example for kmod-3w-sas:
      self.packages = {'dnf', 'dnf-command(config-manager)', 'kernel-modules', 'kmod-3w-sas-3.26.02.000-10.el8_8.elrepo.x86_64'}
    • Navigate to the /etc/leapp/transaction/ directory to add the needed driver by writing its name and version to the to_install text file, for example: kmod-3w-sas-3.26.02.000-10.el8_8.elrepo.x86_64

# dnf Updates Fail after ELevate Upgrade

After the ELevate upgrade process has completed, you may encounter an error like the following when attempting to complete a dnf update...

Error: 
Problem: package nss_db-2.34-100.el9_4.2.x86_64 from @System requires glibc(x86-64) = 2.34-100.el9_4.2, but none of the providers can be installed

cannot install both glibc-2.34-100.el9_4.2.alma.2.x86_64 from baseos and glibc-2.34-100.el9_4.2.x86_64 from @System
cannot install both glibc-2.34-100.el9_4.2.x86_64 from baseos and glibc-2.34-100.el9_4.2.alma.2.x86_64 from baseos
cannot install the best update candidate for package glibc-2.34-100.el9_4.2.x86_64
problem with installed package nss_db-2.34-100.el9_4.2.x86_64

The cause of this error is that during the upgrade process, ELevate uses a multitude of repositories to migrate and upgrade the system. Among them is the usage of the CRB repository. Importantly, if the CRB repository was not enabled on the system prior to using ELevate, it will remain disabled after the upgrade. This can cause future system updates via dnf to fail as some packages/package dependencies now depend on the CRB repository.

While this is one of the most commonly encountered post-ELevate dnf repository related issues, additional or alternative issues may arise from similarly absent dnf repositories that are responsible for dependency resolution.

To enable CRB or any other AlmaLinux repository, please reference this article

# Known issues

AlmaLinux Team is working hard to get a solution for these issues. Any contribution is valuable and helps us out. If you want to help and contribute, see how to contribute information.

  • Some CentOS 7 packages can remain after the upgrade.

# Upgrading from Scientific Linux 7

Upgrading from Scientific Linux 7 to AlmaLinux 8 requires a workaround. You can apply it by running the following command before the preupgrade check:

rm -rf /usr/share/redhat-release /usr/share/doc/redhat-release

# Get Help

For more help and assistance reach out to us on the AlmaLinux Community Chat (opens new window).

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