In case you have multiple kernels installed in the system, you can boot from a specific kernel in case of a downgrade or any other requirement. Let’s see for the purpose of this blog post, how to revert back to an older kernel in CentOS/RHEL 8. Before moving forward, let’s understand how to view the […]
Archives for May 2020
How to list or install only security updates with dnf in CentOS/RHEL 8
Question: Is it possible to limit dnf so that it lists or installs only security updates? How to patch the system only with security errata? This post explains how to list and install security updates using dnf on CentOS/RHEL 8. To list security updates 1. To list advisories about newer versions of installed packages (default): […]
How to activate a “SUSPENDED” LVM physical volume
When suspending a device using the command dmsetup suspend, any I/O that has already been mapped by the device but has not yet completed will be flushed. For example, lvextend command was executed and for some reason, it did not finish. This will keep the volume in suspended mode and all I/O will be blocked. […]