I encountered an intriguing issue recently after replacing my motherboard. Some block devices underwent a change in their order, causing /dev/sda to appear as /dev/sdy due to a modification in the PCI-e enumeration. This change, though seemingly insignificant, led to an unexpected consequence. Since the disk was subject to a specific mdadm filter, its altered…
ZFS version 2.1.11 is supposed to work correctly with Oracle UEK 7. However, on update (and later – a reboot) – it broke. The driver cannot build using dkms, and the error message is something like this: If you look into /boot/config-`uname -r` output, and look for CONFIG_MODULES string, you will indeed find that it…
A common tool in use when needing a console access to a remote server is the IPMI. There are multiple names and implementations – HPE’s ILO, Dell’s iDrac, Lenovo IMM, and so on. This interface can be configured – both network settings and user access credentials, when having a BIOS access, however – a question…
There are many internet service providers (ISPs) around the world that offer fiber internet connections, but sometimes you cannot access your PPPoE user details. This can happen if your ISP does not allow you to use your own router, or if you don’t have the login details for your router. There are ways to try…
I have recently acquired a new computer without an operating system, and I wish to install Oracle Enterprise Linux version 9.1 on it. The ISO file required for the installation is located on an NFS file server, accessible through a network infrastructure. The hardware boots using uEFI, and I have a USB disk-on-key containing Ubuntu…
AutoFS is a powerful tool that allows for mount-on-demand functionality in Linux, reducing the chances of any negative effects when rebooting Windows running file services. In this article, we will focus on how to correctly connect AutoFS to a Windows share, without covering advanced features such as dynamic maps or special cases with different mappings….
