Linux

Forgot to mention kernel update

Byetzion 17/06/2006

Kernel version 2.6.16.9, so I will supply its config file here config-2.6.16.9.txt. Same procedure as before.

Good luck.

Linux

Extracting/Recreating RHEL/Centos6 initrd.img and install.img
Byetzion 01/10/201319/01/2022

A quick note about extracting and recreating RHEL6 or Centos6 (and their derivations) installation media components: Initrd: Extract: Archive (after you applied your changes): /images/install.img: Extract: Archive (after you applied your changes): Additional note for Anaconda installation parameters: I did not test it, however there is a boot flag called stage2= which should lead to…

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Linux

Vlan Tagging with bonding network interface on RHEL4
Byetzion 17/05/2008

This is not a simple task, as there are few things which should actually happen for it to work. First – the switch port should support vlan tagging (of course, right?) I have used vlan2 for “external” network, and vlan3 for “internal” network. My configuration looks like this: ifcfg-eth0: DEVICE=eth0 BOOTPROTO=none ONBOOT=yes MASTER=bond0 SLAVE=yes ISALIAS=no…

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Clusters | Disk Storage | Linux | Oracle

Using Oracle GI 19c to Provide Highly-Available NFS Services
Byetzion 07/03/202307/03/2023

Introduction Since Oracle GI version 11.2.0.3, Oracle have provided a clustered file-system called ACFS, based on the underlined technology Oracle ASM. This technology has provided a reliable-enough, although not free from bugs, clustered file-system, while Oracle OCFS2 (which had its own cluster framework: O2CB) has been abandoned and left to die. ACFS was a good-enough…

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bash | Disk Storage | Linux | Scripting/Programming

ZFS clone script
Byetzion 28/03/202119/01/2022

ZFS has some magical features, comparable to NetApp’s WAFL capabilities. One of the less-used on is the ZFS send/receive, which can be utilised as an engine below something much like NetApp’s SnapMirror or SnapVault. The idea, if you are not familiar with NetApp’s products, is to take a snapshot of a dataset on the source,…

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Disk Storage | Linux

Linux LVM explained
Byetzion 11/07/202011/07/2020

You can find bazillion sites explaining Linux LVM, however, I am preparing for my next article, about partition resize for the advanced user, and LVM deep understanding is required, so I have decided to explain some of the internals of LVM for the advanced user. This explains the how it is built more than the…

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bash | Disk Storage | Linux

Target-based persistent device naming
Byetzion 22/06/2013

When Connecting Linux to a large array of SAS disks (JBOD), udev creates default persistent names in /dev/disk/by-* . These names are based on LUN ID (all disks take lun0 by default), and by path, which includes, for a pure SAS bus – the PWWN of the disks. It means that an example to such…

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