Category Archives: AIX

How 2 Know OS Version on alt_inst_rootvg online

Posted on September 2, 2021 by UNIX Admin

  There is a helpful command to check the OS Release on the Alternative Disk in AIX without booting from it or wakeup   /usr/lpp/bosinst/blvset -d /dev/hdisk0 -g level

List ALL ASM Disks with header ( AIX )

Posted on September 2, 2021 by UNIX Admin

Hello ALL,,   Below is script Tested on AIX Environments to List ALL ASM Disks ( Oracle ASM ) with SN , Header of DIsk , Major and Minor ,,  

AIX Duplicate Node ID

Posted on December 14, 2018 by UNIX Admin

This small article describes how to change the ct_node_id in case two LPARs have the same. 1. Duplicate Node ID after LPAR Cloning When you clone an LPAR by splitting up a copy of the rootvg of an existing LPAR … Continue reading →

Detect SAN Switch from AIX Side

Posted on August 28, 2018 by UNIX Admin

Sometimes AIX Admin need to be sure that the System is connected to different SAN Switch for more redundancy and stability. Follow below steps to check SAN Switches from AIX Side: # lsdev |grep fc fcs0 Available 24-T1 Virtual Fibre … Continue reading →

Recursively replacing a string in all files in a directory

Posted on April 11, 2018 by UNIX Admin

You can use the following command to change Specific string on all files under specific directory: find /u01/directory -type f | xargs perl -pi~ -e ‘s/oldtext/newtext/g;’ Tested on Linux & AIX Ref: https://blogs.oracle.com/rammenon/recursively-replacing-a-string-in-all-files-in-a-directory-linux

Change default values on ODM for Fibre

Posted on August 20, 2017 by UNIX Admin

Hello Everybody … Sometimes for performance recommendations or redundancy solutions, you will need to change some parameters on fibre card, like fc_err_recov & dyntrk TEST_SERVER#lsattr -El fscsi0 attach none How this adapter is CONNECTED False dyntrk yes Dynamic Tracking of … Continue reading →

Script to list disks Info

Posted on August 20, 2017 by UNIX Admin

Hello Everybody, The following lines are a for loop script to display disks info @ AIX System (Disk Name, Disk Unique ID, Disk Size in MB) and of course you can customize the data by add more columns:

Couldn’t canonicalise: Permission denied

Posted on January 13, 2016 by UNIX Admin

If your work on AIX System (or any other UNIX/Linux Distribution), may be you face the following Message when you try to access SFTP: Couldn’t canonicalise: Permission denied Need cwd after many troubleshooting : – user can access SSH without … Continue reading →

AIX can’t mount NFS mount: 1831-008

Posted on November 17, 2015 by UNIX Admin

Sometimes when you try to mount file system (NFS) you will get the following Error: #mount -o rw server1:/dir /bk mount: 1831-008 giving up on: server1:/dir vmount: Operation not permitted.

How to Configure DNS on AIX

Posted on November 5, 2015 by UNIX Admin

Configure DNS on AIX To configure DNS on an AIX server: Add the DNS server(s) to the /etc/resolv.conf configuration file: vi /etc/resolv.conf