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AIX 6/7 Script to create a file with commands to remove missing and failed paths

To create a file with commands to remove the missing paths 1 2 3 4 5 6 7 8 9 #!/bin/sh # rmpaths >xrmpaths echo "#!/bin/sh" >>xrmpaths disks=$(lspv | awk '{print $1}') for loop in $disks do lspath -l $loop -H -F "name:pare...

AIX, user gets “pwd: The file access permissions do not allow the specified action.”

AIX, user gets âpwd: The file access permissions do not allow the specified action.â Just a short demonstration that file permissions matter on directories used as mount points under AIX6.1. Let’s say we have properly running system, the oracl...

IBM AIX MPIO: Best practices and considerations

IBM AIX MPIO: Best practices and considerations Shannon Moore and Gary DomrowPublished on January 20, 2014 FacebookTwitterLinked InGoogle+E-mail this page 15 IBM Power Systemsâ¢ servers are designed to offer very high stand-alone av...

R2dump debug tool

R2dump debug tool Troubleshooting Problem Customers may face a situation where a server is rebooted with no dump and nothing to explain the reason for the reboot in the error report or in the console log. Most commonly this is seen with...

How to disable SSH cipher/ MAC algorithms for Linux and Unix

How to disable SSH cipher/ MAC algorithms for Linux and Unix HowtTosÂ /Â November 04, 2019Â /Â By:Â ayildirim Contents Step 1: Check existing configuration Step 2: Edit SSHD Configuration Step 3: Check the new configuration Some of the security con...

Secure Secure Shell

Secure Secure Shell 2015-01-04 crypto, nsa, and ssh You may have heard that the NSA can decrypt SSH at least some of the time. If you have not, then read theÂ latest batch of Snowden documentsÂ now. All of it. This post will still be here when you f...

AIX FC Performance improvements for IBM AIX FC and FCoE device driver stacks

Performance improvements for IBM AIX FC and FCoE device driver stacks Multiple I/O queue support Yadagiri Rajaboina, Kiran Anumalasetty, Vinod Kumar Boddukuri, and Prashantha Subbarao Published on January 06, 2017 FacebookTwitterLinked InE-mai...

IBM V7000f Performance Test with Vdbench Tool on IBM AIX

Firsty, you should download vdbench to oracle web site. You can see the nameÂ vdbench50406.zip like this. And you have to install java 8,because vdbench use Java8.Its required. Put java path to your root profile. vi .profile export PATH=/usr/java8...

AIX disk queue depth tuning for performance

Purpose The purpose of this document is to describe how IOs are queued with SDD, SDDPCM, the disk device driver and the adapter device driver, and to explain how these can be tuned to increase performance. This information is also useful for non-SDD ...

AIX Resolving "missing" or "removed" disks in AIX LVM

Technote (troubleshooting) Problem(Abstract) How do I get back a disk that is marked "missing" or "removed"? What does this mean? Symptom AIX LVM will mark a disk as "missing" when it cannot successfully determine if the disk belongs to the volume ...

AIX Different Commands For Paging Space Administration swap file create

Posts Tagged ‘mkps’ Different Commands For Paging SpaceÂ Administration leave a comment Â» This post will talk about various commands involved to carry out paging space administration. The first and foremost command always used is to chec...

AIX TCP connection status

A TCP connection progresses through a series of states during its lifetime. The following diagram illustrates the possible states for a TCP connection and how the states transition based on various events from either the network or from the local T...

AIX routing - How Do I Compare ODM with the Current Routing Table?

I'm new to AIX, but not to UNIX in general. My Solaris and IRIX get rustier with each passing day. I've been using RHEL for the last several years, though. My task it to write a shell script that compares the current routing table, from ne...

How to install filesets/software in aix?

How to install filesets/software in aix? How to install filesets/software in aix? Â Â To install the fileset from the cd: First create the directory (mount point)Â Â #mkdir cdmnt Mount the cdromÂ Â Â #mount âv cdrfs âo ro /dev/cd0 /cdmnt Then go to /cdm...

7 Tips – Tuning Command Line History in Bash

7 Tips â Tuning Command Line History in Bash Posted on Tuesday December 27th, 2016by admin Â 7 Tips that can help you to improve you Bash history file. You will learn how to add date and time to bash history file, increase history size, ignore spe...

ILMT Procedure - ILMT / TAD4D / SUA / BFI

ILMT / TAD4D / SUA / BFI IBM License Metric Tool (ILMT or LMT), Tivoli Asset Discovery for Distributed (TAD4D or TADd) and Software Use Analysis (SUA) for IBM Endpoint Manager (IEM) - this blog is about these tools. Tools that in general ...

AIX Password expiry /etc/passwd

Password expiry Reviewing password attributes by David Tansley | Published August 31, 2010 Systems Introduction Password policy is the mechanism of ensuring and enforcing that an account is protected by a password authentication process. Syste...

AIX Oracle tuning

AIX Oracle tuning Posted on June 15, 2010, updated on October 9, 2014 by Yannick Jaquier AIX, Oracle Tuning Â Table of contents Preamble Environment variables Maximum number of processes VMM tuning VMM background maxclient% maxperm% minperm...

How to set Kernel Parameters in AIX ?

Unlike many other UNIX operating systems, AIX does not provide the ability to directly configure most kernel parameters. Instead, the AIX kernel dynamically allocates and reallocates resources as they are needed (up to a predefined limit). To see all...

How to Use the Linux lsof Command

If everything in Linux is a file, there has to be more to it than just files on your hard drive. This tutorial will show you how to useÂ lsofÂ to see all the other devices and processes that are being handled as files. Â On Linux, Everything Is a Fi...

Technology level update on AIX using smit_update and alt_disk_install method

echnology level update on AIX using smit_update and alt_disk_install method Â AIX Technology level update Let first Understand AIX oslevel command output before TL update. Â #oslevel -r 7100-04 7100 is AIX OS version. 04Â Â Â is Technolgy level Â # osle...

AIX HOW TO CLONE A ROOTVG USING ALTERNATE DISK INSTALLATION ALTER_DISK_COPY

Sometimes we need to upgrade the AIX Technology Level (TL), but it cans became dangerous because imagine if we perform an upgrade and after that the system simply doesn’t start again, or maybe an application start getting locking. What I meant ...

AIX Cloning a rootvg using alternate disk installation

Using this scenario, you can cloneÂ AIXÂ®Â running onÂ rootvgÂ to an alternate disk on the same system, install a user-defined software bundle, and run a user-defined script to customize theÂ AIXÂ image on the alternate disk. The information in this how-to...

AIX alt_disk_copy

Required filesets:Â Â Â bos.alt_disk_install.boot_imagesÂ Â Â bos.alt_disk_install.rteÂ Â Â bos.msg.en_US.alt_disk_install.rtealt_disk_copy -d Â Â Â Â Â Â Â Â this will clone the rootvg to the specified diskalt_disk_copy -e /etc/e...

How to upgrade TL and SP in AIX using alternate disk(alt_disk_copy)

Many method available to upgrade/patch AIX technology level(TL) and service pack(SP) to latest level.This is perfect method to update the AIX server using alternate disk, there is no impact to original rootvg whatever the upgrade you are performing t...

Part 1, Memory overview and tuning memory parameters AIX7

Part one of a three-part series by Ken Milberg, Martin Brown | Published November 2, 2010 Systems Introduction As a systems administrator, you should already be familiar with the basics of memory, such as the differences between physical and v...

Part 2, Monitoring memory usage (ps, sar, svmon, vmstat) and analyzing the results AIX7

Part two of a three-part series by Ken Milberg, Martin Brown | Published November 9, 2010 Systems Introduction The most important part of tuning your memory subsystem does not involve actual tuning. Before tuning your system, you must have a s...

Part 3, Tuning swap space settings AIX7

Part three of a three-part series by Martin Brown, Ken Milberg | Published November 16, 2010 Systems About this series This three-part series focuses on the various aspects of memory management and tuning on IBM System pâ¢ servers running AIXÂ® ...

How to start daemons at the system startup in AIX servers

AIX 5.3 1. Create a rc.local file in /etc/ 2. Apply proper permissions a. chown root:sys /etc/rc.local b. chmod 744 /etc/rc.local 3. Add an entry in /etc/inittab so whenever the server is rebooted the script will be started. a. mkitab -i rcnfs...

n a perfect world....rootvg would always reside on hdisk0

In a perfect world, 99.9% of AIX administrators would prefer their systems to look like this: Â # lspv | grep rootvg hdisk0 Â Â Â Â Â Â Â Â 00c342c68dfcbdfbÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â rootvgÂ Â Â Â Â Â Â Â active Â However, in reality, 99.9% of AIX administrators live with...

How to Maintain a Virtual I/O Server With FBO Part II

How to Maintain a Virtual I/O Server With FBO Â October 2013 | by Jaqui Lynch Â Print 0 Â Resource Editor’s Note: This is the second of a two-part series on Virtual I/O Server (VIOS) care and feeding. Part one discussed how to perf...

How to Backup and Upgrade a Virtual I/O Server Part I

How to Backup and Upgrade a Virtual I/O Server Â September 2013 | by Jaqui Lynch Â Print 7 Â Available Downloads: Code Sample 1 Â Editor’s note: This is the first of a two-part series on Virtual I/O Server (VIOS) care and feeding....

HOWTO: Implement SEA Failover with Dual VIOS

In 2004 IBM released POWER5 with a very "Power"ful feature built-in - Virtual Ethernet. An additional feature known as Shared Ethernet Adapter (SEA) enables client partitions to communicate with via IP protocols without a requirement for a physical e...

vfcpmap on VIO Server

vfcpmap on VIO Server Â vfcmap command maps and unmaps the virtual fibre channel adapter to the physical fibre channel port.To Map the virtual fibre channel ,vfchost1 to the physical fibre channel port, fcs0 # vfcmap -vadapter vfchost0 -fcp fcs0To u...

Installation of the Virtual I/O Server directly from the HMC

Installation of the Virtual I/O Server directly from the HMC Â Â HMC firmware version 7.7.7 allows installation of the Virtual I/O Server directly from the HMC. Â Steps: 1.Download VIOS installation .iso images from IBM website. 2.Copy installati...

The new VIOS performance advisor tool part util

I updated my lab VIOS to the latest fix pack (V2.2.2.1) this week and thought I’d try the new VIOS part command. This new command is an improved version of the existing vios_advisor tool. The major difference between the two is the fact that th...

Using expect to automate mundane tasks

I have a Power5 system I use for testing, no HMC and I cannot always depend on being at a location where I can use the web-based ASMI interface. Plus, I have to wait for the web-interface to load. I prefer to use the serial line connection from tty1 ...

AIX Creating EtherChannel Devices from Command Line

I needed to create some EtherChannel devices on several AIX LPARs, and did not want to go through the smit panels every time. I was testing network performance and wanted to add these to aÂ script, so I could test standalone adapter configurations vs ...

Altering LVM Configuration When a Disk is Not in ODM Anymore

If you remove a disk from the system using rmdev -dl hdiskX without having previously reduced the volume group to remove the disk from LVM, and thus have not updated properly the on-disk format information (called VGDA), you get a discrepancy betwe...

AIX 7.2 running on my Macbook?

After reading this https://worthdoingbadly.com/aixqemu and this https://lists.gnu.org/archive/html/qemu-ppc/2018-05/msg00387.html, I was inspired and very curious. Could I get AIX 7.2 running on QEMU on my MacBook Pro (running Mac OS X 10.13.6)? Â We...

AIX lsdevinfo

The lsdevinfo utility appears to an undocumented command. However it looks like it could come in handy occasionally. Here are some examples of using it on AIX 7.1: Â # oslevel -s 7100-00-01-1037 Â # lslpp -w /usr/sbin/lsdevinfo Â FileÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...

Using the AIX splitvg command

Using the AIX splitvg command. cggibbo |Mar 31 2010| Comments (5) | Visits (30446) 1 Just the other day, I needed to use the AIX splitvg command in order to copy some data from one system to another. I thought I’d share the experience here. The...

Using splitvg in AIX to make a copy of a volume group

Technote (FAQ) Question How do I use splitvg to make a copy of a volume group I can back up? Answer Initial Volume Group Setup Start with a mirrored volume group: # lsvg -l zzvg zzvg: LV NAME Â Â Â Â Â Â TYPE Â Â Â LPs Â Â PPs Â Â PVs Â LV STATE Â Â ...

AIX QHA

The standard tool for cluster monitoring is clstat, which comes along with PowerHA SystemMirror/HACMP. Clstat is rather slow with its updates, and sometimes the required clinfo deamon needs restarting in order to get it operational, so this is, well...

AIX HA / HACMP, System Admin↑ Mountguard

Topics: PowerHA / HACMP, Storage Adding a new volume group to an active PowerHA resource group Â This article describes how to add a new volume group to an existing resource group of an active PowerHA cluster. The first step is to add the stora...

Topics: PowerHA / HACMP, Storage Adding a new volume group to an active PowerHA resource group

This article describes how to add a new volume group to an existing resource group of an active PowerHA cluster. The first step is to add the storage to both of the nodes of the PowerHA cluster. In the case of SAN storage, please ensure that your st...

Setting new device attributes with chdef

While building a new LPAR recently I stumbled across the chdef command. Â This commandÂ modifies the default value of a predefined attribute of the specified device type in the ODM (PdDv). Â For devices that are already configured and of the same class,...

Migrating from SDDPCM to AIXPCM (the easy way)

For a while now, IBM have diverted their efforts in storage multipathing from SDDPCM to the default AIX PCM [1]. This brings a few advantages, but specifically for me, it means the driver is now updated as part of the AIX system maintenance, and is ...

This document discusses a new feature implemented for JFS2 filesystems to prevent simultaneous mounting.

Technote (FAQ) Question This document discusses a new feature implemented for JFS2 filesystems to prevent simultaneous mounting. Answer While AIX PowerHA can give concurrent access of volume groups to multiple systems, mounting a JFS2 filesystem on...

Using AIX VG mirroring in combination with hardware snapshots

Using AIX VG mirroring in combination with hardwareÂ snapshots Posted on June 24, 2014 by Anthony Vandewerdt One of the great things about Logical Volume Managers is how you can use them for all manner of clever solutions. Â Â I recently explored how ...

AIX Changing `defined` or `missing` hard disk states to `Available` in IBM Smart Analytics System for AIX environment

Technote (troubleshooting) Problem(Abstract) Hard disks in 'defined' or 'missing' state should be changed to 'Available' state in IBM Smart Analytics System for AIX environment and disk settings need to be reconfigured....

AIX LVM QUORUM mysteries revealed

Technote (FAQ) Question Why can't I varyon a Volume Group when one or more physical volumes are not available? Cause Varyonvg requires 100% of its physical volumes be available and accessible in order to successfully vary on the Volume Group w...

AIX↑ AIX www links

Links / URLs regarding IBM AIX: IBM.com - official website IBM Power Systems Technical documentation for AIX IBM System p Redbooks Domain Fix Central (including maintenance levels) Fix Level Recommendation ToolÂ (FLRT) Inventory Scout - Microcode Dis...

Topics: AIX, Networking, System Admin

As an AIX admin, you may not always know what switches a certain server is connected to. If you have Cisco switches, here's an interesting method to identify the switch your server is connected to. First, run ifconfig to look up the interfaces ...

AIX, System Admin↑ The chrctcp command

The chrctcp command in not documented in AIX, but you can still use it to do nice things, especially when you are scripting. Some examples are: To enable xntpd in /etc/rc.tcpip, and to start xntpd: # chrctcp -S -a xntpd To disable xntpd in /etc/rc.t...

AIX, Security, System Admin↑ Clearing password history

Sometimes when password rules are very strict, a user may have problems creating a new password that is both easy to remember, and still adheres to the password rules. To aid the user, it could be useful to clear the password history for his or her a...

AIX, Security, System Admin↑ Fix user accounts

Security guidelines nowadays can be annoying. Within many companies people have to comply with strict security in regards to password expiration settings, password complexity and system security settings. All these settings and regulations more than ...

AIX, Security, System Admin↑ Generating random passwords

When you set up a new user account, and assign a password to that account, you'll want to make sure that it is a password that can not be easily guessed. Setting the initial password to something easy like "changeme", only allows hackers easy ac...

AIX, Security, System Admin Difference between sticky bit and SUID/GUID

This is probably one of things that people mess up all the time. They both have to do with permissions on a file, but the SUID/GUID (or SETUID short for set-user-id/SETGID short for set-group-id) bit and the sticky-bit are 2 completely different thin...

AIX, Monitoring, System Admin↑ NMON recordings

One can set up NMON recordings from smit via: # smitty topas -> Start New Recording -> Start local recording -> nmon However, the smit panel doesn't list the option needed to get disk IO service times. Specifically, the -d option to col...

AIX, Red Hat, Security, System Admin↑ System-wide separated shell history files for each user and session

Here's how you can set up your /etc/profile in order to create a separate shell history file for each user and each login session. This is very useful when you need to know who exactly ran a specific command at a point in time. For Red Hat Linux...

AIX, Monitoring, Networking, Red Hat, Security, System Admin↑ Determining type of system remotely

If you run into a system that you can't access, but is available on the network, and have no idea what type of system that is, then there are few tricks you can use to determine the type of system remotely. The first one, is by looking at the T...

AIX, Storage, System Admin↑ Identifying a Disk Bottleneck Using filemon

This blog will display the steps required to identify an IO problem in the storage area network and/or disk arrays on AIX. Note: Do not execute filemon with AIX 6.1 Technology Level 6 Service Pack 1 if WebSphere MQ is running. WebSphere MQ will abno...

Topics: AIX, System Admin↑ Export and import PuTTY sessions

PuTTY itself does not provide a means to export the list of sessions, nor a way to import the sessions from another computer. However, it is not so difficult, once you know that PuTTY stores the session information in the Windows Registry. To export...

AIX, Storage, System Admin Allocating shared storage to VIOS clients

The following is a procedure to add shared storage to a clustered, virtualized environment. This assumes the following: You have a PowerHA cluster on two nodes, nodeA and nodeB. Each node is on a separate physical system, and each node is a client of...

AIX, System Admin Configuring dsh DSH

The dsh (distributed shell) is a very useful (and powerful) utility that can be used to run commands on multiple servers at the same time. By default it is not installed on AIX, but you can install it yourself: First, install the dsm file sets. DSM ...

AIX www web Links

AIX, Installation, NIM↑ Creating an LPP source and SPOT in NIM

This is a quick and dirty method of setting up an LPP source and SPOT of AIX 5.3 TL10 SP2, without having to swap DVD's into the AIX host machine. What you basically need is the actual AIX 5.3 TL10 SP2 DVD's from IBM, a Windows host, and a...

AIX, Networking↑ Adding and deleting a static network route using the command line

There are two commands that can be used to add a route on an AIX system. The first one is route, and can be used to temporarily add a route to an AIX system. Meaning, if the system is rebooted, after the route has been added, the route will be lost ...

How to Configure Sendmail not to Look up MX records

A default sendmail configuration will do DNS queries for MX records. It does this even when its setup to use a Mail Relay Server for sending mail out. This will cause mail to fail if its not able to lookup the MX record, for example when the SMTP rel...

AIX, Networking Etherchannel failover testing

When an Etherchannel has been configured on AIX, using a primary and a backup adapter for failover purposes, it is possible to force a failover between these adapters. To do this, first check what the currently active adapter is within the Etherchan...

AIX oslevel version OS

####oslevel -sqKnown Service Packs-------------------7200-02-02-1810 <---- BL TL ML YY WW ---> 7200 02 02 18 107200-02-02-18067200-02-01-17327200-02-01-17317200-02-00-00007200-01-04-18067200-01-03-17207200-01-02-17177200-01-01-16427200-00-06-18...

Useful AIX general commands

Useful AIX commands svmon svmon -P Further: use can user svmon command to monitor memory usage as follows; (A) #svmon -P -v -t 10 | more (will give top ten processes) (B) #svmon -U -v -t 10 | more ( will give top ten use...

NMON nmon

ScreenShots nmon for Linux Screen Shots On this webpage you can find Screen shots of using nmon for Linux online Sample graphs from the nmon Analyser after it generated them from nmon for Linux capture to a file Also see the nmonchart link on th...

Changing Ethernet Media Speed for AIX

First you need to find out the device name of your ethernet card. It should be ent0 if the machine has only 1 ethernet card. Otherwise, it may be a higher number.You can determine the legal values for the media speed of the card by running the follow...

A Unix Utility You Should Know About: lsof

A Unix Utility You Should Know About: lsof This is the third post in the article series about Unix and Linux utilities that you should know about. In this post I will take you through the useful lsof tool. If netcat was called the Swiss Army Knife...

AIX Power replacing (hot-swap) failed disk in rootvg

Â replacing (hot-swap) failed disk in rootvg After login in, I had to verify that it is indeed hdisk0 that died, 1 2 3 4 5 grdoras1:/root >Â lsvg -p rootvg rootvg: PV_NAMEÂ Â PV STATEÂ TOTAL PPsÂ Â FREE PPsÂ Â Â FREE DISTRIBUTION hdisk1Â ...

AIX- Procedure to replace rootvg harddisk

Procedure of replacing rootvg failed hdisk ================================= 1)Ensure all LV in VG are mirrored. (lsvg -l rootvg) 2) unmirrorvg rootvg hdisk1 ( eg for hdisk1 is failed) 3) Check for any more LV on the hdisk to be removed (lspv -l hdis...

Remove disk from volumegroup in AIX

Sometimes in a migration project you need to temporary add extra disks to volume group. As a storage admin you like getÂ the disks back when your colleagues are finished migrating the application. I tried to create a clear procedure to get this done.U...

AIX Commands Related to Boot and Init Process

AIX Commands Related to Boot and InitÂ Process Posted on November 21, 2012 by ksgnathan 1) To find the run-level in which system is working a) #who -r b) cat /etc/.init.state 2) To change the runlevel from one to other #telinitÂ MÂ or shutdown -mÂ â...

AIX Booting

Startup - Shutdown mkitabÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â adds record to the /etc/inittab file (-i: insert the newline anywher in the inittab file) Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (without the -i parameter, the line wil be appended to the end of the file) lsitabÂ Â Â ...

AIX boot proccess

AIX Boot Process POWER ON POST (Power on Self Test) / BIST (Built-in Self Test for AIX) ROS Initialization (Checks Mother Board using OCS BUMP) Hardware ROSÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Software ROS Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...

bootlist multiple boot logical volume found

This describes how to resolve the following error when setting the bootlist: # bootlist -m normal hdisk2 hdisk3 0514-229 bootlist: Multiple boot logical volumes found on 'hdisk2'. Use the 'blv' attribute to specify the one from w...

Recovery from LED 552, 554, or 556 in AIX

Recovery from LED 552, 554, or 556 in AIX Â Technote (FAQ) Question Recovery from LED 552, 554, or 556 system hang conditions in AIX. Answer This document discusses the known causes of LED 552, 554, and 556. Included is a procedure for rec...

My LPAR always boots into SMS. Why?

If you turn on Multiboot from within the SMS menu (as shown below), your LPAR will always boot into SMS, regardless of your AIX boot list and/or LPAR profile settings. Â Â PowerPC Firmware Version EM310_048 SMS 1.6 (c) Copyright IBM Corp. 2000,2005 Al...

Getting bosboot errors, don`t reboot just yet

Introduction In this demonstration, I will be using hdisk0 in the examples provided. The checks I provide are not an exhaustive list, but rather common issues I have come across over the years. When getting bosboot errors, I always find it best to go...

AIX Reviewing AIX Error and Boot Logs

Reviewing AIX Error and Boot Logs Â July 2013 | by David Tansley Â Print 5 Â Â AIX provides comprehensive logging of events—some are errors requiring attention and others are just notifications. For system administrators, tasked to mak...

AIX Errpt - Diag - Alog

ERROR LOGGING: The errdemon is started during system initialization and continuously monitors the special file /dev/error for new entries sent by either the kernel or by applications. The label of each new entry is checked against the contents of th...

0516-787 extendlv: Maximum allocation for logical volume error

Sometimes you will see this error when you want to extend filesystem / logical volume. Error Message: Â 0516-787 extendlv: Maximum allocation for logical volume is 512. Maximum number of LPs for the logical volume has been exceeded â ...

AIX -- extending Logical Volumes online

AIX -- extending Logical Volumes online Â In this post, we will extend an Logical Volume size in AIX system. The AIX system used in this example, is AIX 5.3. The operation is online, and the effects of it can be seen instantaneously. We use commands...

Oslevel shows wrong AIX`s level. Why

Sometimes we see our AIX box with a lower oslevel than it really have. Why? This is due to filesets with a lower level than the system have. What happened? Let explain that with an example. Today I have installed AIX 7.1 TL3 SP1 on my box. ‘osl...

Install and configure yum on AIX

Prerequisites: Download latest version of RPM file from https://ftp.software.ibm.com/aix/freeSoftware/aixtoolbox/INSTALLP/ppc/ and copy it to /tmp/yum/rpm/ directory on AIX system. Download latest version of yum_bundle (yum_bundle_v1.tar) from https...

Setup private yum repository for AIX clients

Prerequisites: Â A Unix server on your private network: Accessing IBM repository ftp://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/RPMS/ppc/) Â Â Apache server installed to serve RPM files for internal AIX clients. Â Â AIX clients must access this...

Reconfigure RSCT ID to fix DLPAR issues on cloned AIX systems

ON AIX systems, RMC daemons are part of the Reliable, Scalable Cluster Technology (RSCT). They allows the HMC to communicate with a managed logical partition to do DLPAR operations. But, when we clone an AIX system, for example using mksysb, RSCT ID ...

AIX hangs on boot? How to debug boot process on AIX systems

Today an AIX system hanged when reboot. What’s going on?Â Where can I see the debug verbose log of boot process? Just, follow this steps. 1- Boot AIX LPAR from HMC in âOpen firmware OK promptâmode: 2- Connect ssh to HMC/FSM with user hscroot a...

Recovery AIX system when hang on boot (554 code error).

If AIX system does not boot properly, possible causes could be: corrupted file system corrupted Journaled File System (JFS) log device bad IPL-device record or bad IPL-device magic number; the magic number indicates the device type corrupted copy of...

DISK OPERATION ERROR in AIX

Last month, we noted errpt showing an error: 1 2 3 4 5 6 7 8 9 10 11 [root@aix:/] errpt -a IDENTIFIER TIMESTAMPÂ T C RESOURCE_NAMEÂ DESCRIPTION DCB47997Â Â 1122091816 T H hdisk29Â Â Â Â Â Â Â DISK OPERATION ERROR F31FFAC3Â Â 1122091816 I H hdisk29Â Â ...

Working with Virtual media library on VIO servers

Sometimes we need to map an ISO images to LPARs. Today we’re going to create a VM library, load ISO images and map them to LPARs. Just follow these steps Prerequisites: Download AIX’s iso files from IBM entitled software support. Copy IS...

Create memory resident filesystems (RAM disk) on AIX

AIX supports memory-resident file systems. It can be used to maximize disk performance. It’s equivalent to Solaris tmpfs filesystem. NOTE: RAM disk doesn’t survive a reboot. Steps to create a RAM disk on AIX: Get size of real (online) me...

Calculate hdisk READ / WRITE throughput (sequential IO) from AIX systems

Do you know the throughput of your disks? This time we’re going to calculate read / write throughput of hdisks from an AIX system. Let’s create a file for this test. 1 [root@aix:/] lptest 127 32 > /tmp/file 1 2 ...

Script to download TL and SP for AIX using NIM and SUMA

Well, we know IBM’s fix central exists and you can register and download any Tls, SPs or efixes among tons of important information but sometimes it is slow, difficult to download it. So, using a tool from IBM known as S.U.M.A (Service Update M...

Script to reset NIM state and deallocate resources

Sometimes we need to reset the state of a lpar on our NIM server. You can use smitty, but it’s simpler to use a shell script. First, we check the which NIM resources our LPAR has inside NIM: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ...

Check connection (rsh or nimsh) between NIM server and LPAR

NIM server needs to be connected with LPARs, either using rsh or nimsh protocol. In case this communcation is lost, mksysb backups or other tasks from NIM to this lpar will fail. So, I have made this simple script to check this connectivity between N...

Script to make mksysb backup from NIM to LPAR

Make mksysb backup for your rootvg to NIM is very important. It can save your life sometimes

How do I analyze and debug core files on AIX

Sometimes, applications stop working and crash for any reason. A core file appears in scene. First, we’re goingÂ to set a PATH for all cores files on the systemÂ using syscorepath command. In order to do this, We’re going to: 1- Create an...

Authenticate AIX using MS DC`s kerberos servers (Active Directory)

In your environment, it’s critical for auditors to have only one centralized source of users/passwords. There are tons of ways AIX can do this. The way I use is using Windows active directory’s kerberos servers. Here’s what I do: 1-...

Install and configure GNU`s screen on AIX

Sometimes we have only one terminal to an AIX system and we need to open multiples logins to make parallel tasks. This is where GNU screen (http://www.gnu.org/software/screen/) comes to play.Â I use ‘GNU screen’ also tu run a long tasks i...

SSH-COPY-ID on AIX. SSH remote AIX`s box without password

I’m sure most unix administrators knows the utility ‘ssh-copy-id’Â part of OpenSSH. It’s very useful when we need to exchange SSH keys between hosts. This simple shell script is available on most Linux distros, but it’s ...

Monitor logfiles and command output on AIX using multitail.

Most applications, like operating systems, have their own logs files. Sometimes, we need to see them at the same time to troubleshoot issues. Here’s when multitail (http://www.vanheusden.com/multitail/) can help us. This tool can be installed o...

Install and configure GNU watch (gwatch) on AIX

GNU’s Linux have an interesting command ‘GNU watch’ http://linux.die.net/man/1/watch which its main function is not to watch your wife while you’re at work (Just kidding), its function is toÂ execute a program periodically, sh...

Mirroring session (TTY) on AIX using portmir

Sometimes we want to see the screen of the session of another user in, order to solve any problem remotely. Portmir is an interesting AIX’s command and help us to achieve this. Portmir is part of bos.sysmgt.serv_aid filand filesetis and it&rsqu...

Find out which port the daemon is using on AIX OS. (similar like command netstat -anp for Linux)

How to find which port TCP or UDP are being used by daemons on AIX OS. For TCP protocol: netstat -Aan |grep -E "\*.[0-9].+LISTEN" |awkÂ '{print $1, substr($5,3)}' |while read socket port do Â echo "TCP Ports: " $port "--->" $(rmsock ...

Configure log file for cron daemon on AIX

Cron daemon log in by default on /var/adm/cron/log, but I wanted to put it with all other logs of the system. All system logs (syslog, mksysb, ftp, http, and so on, are on /var/syslog filesystem, I decided to put cron logs in the same place. Here&rsq...

Ethernet tunning for VIOS and AIX for 10 Gib/sec environtement.

I had the pleaseure to setup from scratch an IBM pureflex p270 system, including chassis, ethernet switches, fiber channel switches, FSM, dual VIOS and LPARs. Although, all connections inside pureflex node is at 10 Gbits/sec, this chassis is connecte...

Create jfs2 logical volume on AIX

How to create a jfs2 logical volume on AIX? First, you need to know: Which volume group you’re going to create the LV. In our case ‘newvg’ [root@aix:/] lsvg -o rootvg newvg Volume group PP size. In our case ‘4MB’ [r...

Create volume groups on AIX - Normal Big Scalable

You can create three types of volume groups on AIX: Normal Big Scalable VG type Â Â Â Max-PVsÂ Â Â Max-LVsÂ Â Â Â Â Â Â Â Max-PPs per VG Â Â Â Â Max-PP per size NormalÂ Â Â Â Â Â Â Â Â 32Â Â Â Â Â Â Â Â Â Â 256Â Â Â Â Â Â Â Â Â Â 32,512Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1 GB BigÂ Â Â Â Â Â Â Â Â Â Â 128...

AIX: Error code 0516-1339, 0516-1397 0516-792: cannot extendvg with a previous Oracle ASM disk

Error Message: labserver:/root# extendvg -f backupvg hdisk1 0516-1339 extendvg: Physical volume contains some 3rd party volume group. 0516-1397 extendvg: The physical volume hdisk1, will not be added to the volume group. 0516-792 extendvg: Unable to ...

Writing a Custom PVID

Writing a Custom PVID John.Wright | June 14 2012 | Visits (10497) Â This blog post came about after a customer had encountered a problem on AIX 5.3.Â The disk being imported is a floating SAN disk shared between servers on various frames.Â T...

Aix: How to assign a specific PVID

Aix: How to assign a specific PVID July 28, 2009 admin Leave a comment 1) BACKUP old disk critical data. # dd if=/dev/hdisk9 of=/tmp/hdisk9.save bs=4k count=1 Â If something were to go wrong and the head information got damaged use the following ...

Got Duplicate PVIDs in Your User VG? Try Recreatevg!

Got Duplicate PVIDs in Your User VG? Try Recreatevg! Â June 2016 | by David Tansley Â Print 3 Â Â I recently installed a new SP (service pack) level on AIX. I then rebooted the box, as is usual practice for the changes to take effect. But up...

Creating Normal,Big,Scalable VG on AIX

Â Â Â Tuesday, 17 July 2012 Â Creating Normal,Big,Scalable VG on AIX Â After SAN team assigned Disks/LUNs to the server,we need to scan it from OS side and once scanned completed successfully and disks are available we will be able to c...

A Change to the SMT Mode Default in POWER9

October 30, 2018 There's a rather significant change with the default SMT mode in AIX 7.2 TL3 running on POWER9 servers: âFor POWER9 technology-based servers, the default SMT setting for AIX 7.2 TL 3 has been changed to SMT8 to provide the best ...

AIX smtctl The smtctl command controls the enabling and disabling of processor simultaneous multithreading mode.

Description This command is provided for privileged users and applications to control utilization of processors with simultaneous multithreading support. The simultaneous multithreading mode allows processors to have thread level parallelism at the i...

AIX ODM for MPIO User Guide 09

This chapter provides answers to frequently asked questions (FAQs) during AIX ODM for MPIO configuration and management. You can refer to this chapter for troubleshooting if necessary. 7.1 What Are Known Bugs That Affect This Software and Corresp...

AIX Migrating from SDDPCM to AIXPCM (the easy way)

Migrating from SDDPCM to AIXPCM (the easy way) Posted on July 30, 2018 For a while now, IBM have diverted their efforts in storage multipathing from SDDPCM to the default AIX PCM [1]. This brings a few advantages, but specifically for me, it means...

AIX Net How to check VLAN ID number on AIX?

To check VLAN ID on AIX you can issue the command entstat filtering the result as the follow: # entstat -d en0 | grep 'Port VLAN ID' Port VLAN ID: 800 hostname:/:$ lsdev | grep ^ent ent0 Available Virtual I/O Ethernet...

How to enable Large Pages for a specific user on AIX?

# chuser capabilities=CAP_BYPASS_RAC_VMM,CAP_PROPAGATE USER_ID

How to build a NIM Server on AIX 6.1 from the Scratch :: Part 1

How to build a NIM Server on AIX 6.1 from the Scratch :: PartÂ 1 May 23, 2017Leave a comment Hello Fellas! Here is a good how to build from the Scratch a NIM Server under AIX 6.1. (The operation for version 7.1 stills the same, anyway). Well, for t...

How to clear/clean/erase/delete/reset network adapter configuration on AIX?

To reset, clear, clean or erase network adapter configuration that means, IP Address and Netmask, issue the following command: # chdev -a netaddr=0.0.0.0 -a netmask=0.0.0.0 -l en0

Trick to Purge/Clean Swap Usage on AIX

Trick to Purge/Clean Swap Usage onÂ AIX May 13, 2017Leave a comment And, âof courseâ after solving what was using to much swap space, you got already a good space that needs to be free, well, we’re here to do the trick! # lsps -a Page Space ...

Script to show Total, Free and Used Memory on AIX

Just Copy and Paste: (memory=`prtconf -m | awk 'BEGIN {FS=" "} {print $3/1024}'` usedmem=`svmon -G | grep memory | awk 'BEGIN {FS=" "} {print $3/256/1024}'` freemem=`echo $memory-$usedmem | bc -l` clear echo echo "Memory Results:"...

Awesome Command to show top 15 processes using memory on AIX

Need to know who is on the top processes using memory on AIX?, here is: Command: # svmon -Pt15 | perl -e 'while(<>){print if($.==2||$&&&!$s++);$.=0 if(/^-+$/)}' Output: # svmon -Pt15 | perl -e 'while(<>){print i...

How to know witch process is running in a particular port on AIX using KDB

How to know witch process is running in a particular port on AIX usingÂ KDB May 13, 2017Leave a comment Fellas, here is the gig, please, don’t cry!

AIX lspath Missing path

Reviewing disk paths, I found some paths showing as Missing and some enabled on the same fscsi root@aix:/ # lspath -l hdisk31 Enabled hdisk31 fscsi0 Missing hdisk31 fscsi0 Enabled hdisk31 fscsi0 Missing hdisk31 fscsi0 Enabled hdisk31 fscsi2 Missing ...

Checking HBA status on AIX

Checking HBA status onÂ AIX By Emerson Takahashi on March 2, 2018 Storage team checked and it was not showing light on the fiber Index Slot Port Address Media Speed State Proto =================================================== 298 3 42 28a280 id N...

Changing `defined` or `missing` hard disk states to `Available` in IBM Smart Analytics System for AIX environment

Problem(Abstract) Hard disks in 'defined' or 'missing' state should be changed to 'Available' state in IBM Smart Analytics System for AIX environment and disk settings need to be reconfigured. Resolving the problem The ...

replacing (hot-swap) failed disk in rootvg

IBM called me because one of my hosts called them reporting a failed disk in rootvg. It was the hdisk0 that decided to quit. A few minutes later, a service engineer called my to let me know that he is driving with the new disk. I had about an hour to...

List AIX File Systems the Easy Way With the lsvgfs Command

List AIX File Systems the Easy Way With the lsvgfs Command Â March 2016 | by Anthony English Â Print 0 Â Resources Even for an IT guy, having a favorite AIX command seems pretty geeky. Nonetheless, I do have one. It’s the lsvgfs co...

Practical Guide to AIX - network

Network netstat -iÂ Â Â Â Â Â Â Â Â shows statistic of all defined network interfaces (the * at the name means currently inactive) Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â if Oerrs greater than 1% of Opkts -> xmt_que_size (send queue size) should be increased Â Â Â Â Â Â Â Â ...

Manages processor scheduler tunable parameters schedo AIX

Manages processor scheduler tunable parameters. Syntax schedo [ -p | -r ] [-y] { -o Tunable[= Newvalue]} schedo [ -p | -r ] [-y] { -d Tunable } schedo [ -p | -r ] [-y] -D schedo [ -p | -r ] [ -F] -a schedo -h [Tunable ] schedo [-F] -L [Tunable ] s...

Burn Image to DVD in AIX

Burn Image to DVD in AIX Â Burn Image to DVD there are two ways to restore a mksysb file.Â One is to use NIM, the other is to burn the mksysb image onto DVD. Â This was the copying a mksysb image to a DVD or creating an ISO image with the entire DV...

AIX 0516-404 allocp: This system cannot fulfill the allocation

emre@sysaix:/ # chfs -a size=+1G /dizin 0516-404 allocp: This system cannot fulfill the allocation request. There are not enough free partitions or not enough physical volumes to keep strictness and satisfy allocation requests. The c...

0516-404 allocpThis system cannot fulfill the allocation

While trying to increase space on one of my file systems I get the following error, Code: [/home/root] #chfs -a size=+5G /fns/ld/r 0516-404 allocp: This system cannot fulfill the allocation request. There are not enough free partit...

0516-404 allocp: This system cannot fulfill the allocation request. [AIX]

0516-404 allocp: This system cannot fulfill the allocation request.Â [AIX] Â Â Â Hello all, today I’m going to talk about an error that I have faced today during I was trying to increase a filesystem/Logical Volume : hostname # chfs -a size=+1G...

AIX snap - Prevent dump collection

You can specify the âZ flag with the AIX snap command to prevent it from collecting system dump data. The flag is not shown in the man page for snap. However, it is listed in the usage information. Â # oslevel -s 7100-03-03-1415 Â # sysdumpdev -L Â Â ...

SNAP

SNAP: It gathers system configuration information and compresses the information to a pax file. This file can be downloaded later to a tape or a cd or can be sent to a remote system. This SNAP information is later used by IBM to resolve real time pro...

SNAP in AIX

SNAP in AIX Â Before running a snap .You need to RemoveÂ old snap file. # snap -r Â For IBM Software Case. Below command collect all the information. # snap -acÂ Â For IBM Hardware Case # snap -gc snapÂ withoutÂ dump collection # snap -aZc # s...

AIX perf how to

Run for 10 minutes / 600 seconds. The perfpmr run should be Â Â Â captured while the system is affected by the performance issue. Â Â Â The perfPMR script is being updated on a regular basis. Â Â Â Please complete the questions asked in the PROBLEM.INFO ...

AIX How to Investigate a System Reboot

Technote (FAQ) Question Why did AIX shut down and reboot, or shut down and halt? Answer Introduction How does a system go down? How does a system boot up after going down? What system logs and commands can I use to investigate an unexpected shut do...

AIX Replacing a failed disk (rootvg)

Replacing a failed disk (rootvg) This post will describe the replacement of a failed rootvg disk. In short the procedure is the following: 1. unmirrorvg rootvg hdisk0 (savebase -v) 2. reducevg rootvg hdisk0 3. rmdev -Rdl hdisk0 4. diag (safely remo...

Create a mksysb + SPOT using NIM (CLI)

Create a mksysb + SPOT using NIM (CLI) Here I will describe how to create a mksysb image of a NIM client from the NIM server using the cli and afterwards we will create a SPOT from the newly created mksysb. So firt we define the new mksysb: # nim -...

AIX Increase paging space logical volume size

Increase paging space logical volume size To show the current paging space volume, its size along with other information use the ‘lsps’ command: #lsps -a Page Space Physical Volume Volume Group Size %Used Active Auto Type Ch...

AIX Undocumented AIX command lquerypv

Undocumented AIX command lquerypv lquerypv can read the PVID directly from the disk: # lquerypv -h /dev/hdisk0 80 10 00000080 00C4489D 5E6002A5 00000000 00000000 |..H.^`..........| # lspv hdisk0 00c4489d5e6002a5 root...

AIX Creating a Volume Group

Creating a Volume Group This post will describe how to: 1. Create a Volume Group 2. Create a Logical Volume within the VG containing a JFS2 filesystem that will be automatically mounted during boot. 3. Add a disk to the VG and mirror the data acros...

Installing a Interim Fix (APAR IV16587)

Installing a Interim Fix (APAR IV16587) This post will describe a interim Fix installation from the APARÂ IV16587Â on a system levelÂ 6100-07-02-1150, more informationÂ can be found here, more about Interim fixes in general is here. This procedure wil...

AIX Not all filesets for 6100-07_AIX_ML were found

Not all filesets for 6100-07_AIX_ML were found After os level update it might happen that not all filesets are installed correctly what results in a lower oslevel than we attempted to update to. For example if we update from TL5 to TL7 on AIX 6.1. ...

Mount CD/DVD & ISO image in AIX 6.1

Mount CD/DVD & ISO image in AIX 6.1 To mount a CD or DVD from the CLI use: # mount -V cdrfs -o ro /dev/cd0 /mnt # df -g /mnt Filesystem GB blocks Free %Used Iused %Iused Mounted on /dev/cd0 3.64 0.00 100% 1905950 1...

List STALE partitions across Volume Groups for each Logical Volume in AIX

List STALE partitions across Volume Groups for each Logical Volume in AIX I wrote a tiny script that can report the number of stale partitions across multiple Volume Groups. If invoked with the -a flag the script will list LPs, PPs and Stale partit...

AIX NTP Client configuration

NTP Client configuration To configure a AIX box as a NTP client first set the correct time zone using `smitty chtz_date`. Also set the system time manually as accurate as possible, if the system time would be way out of the reality, the xntpd daemo...

IP configuration in AIX

IP configuration in AIX Here are some TCP/IP related commands, might be usefull. Generally by using ifconfig and route commands your settings will not be preserved after the reboot, because the settings will not be stored in the ODM. So to make the...

AIX Assign a PVID to a new hdisk

Assign a PVID to a new hdisk Very simple: # lspv hdisk0 00c0e90dce6c290a rootvg active hdisk1 none None hdisk2 none ...

View mksysb content & restore individual files

View mksysb content & restore individual files To view information about a mksysb backup file use: Display info about VG backup | # lsmksysb -lf P2_1202_TL7.mk | | | Mks...

AIX Encrypted File System

Encrypted File System This post will in short describe how to setup an Encrypted Filesystem on AIX 6.1. EFS offers 2 modes of operation: Root Admin mode This is the default mode. Root can reset user and group keystore passwords. Root Guard mode Roo...

Create bootable DVD iso image from a mksysb backup

Create bootable DVD iso image from a mksysb backup If for any reason necessary, you can create a bootable DVD.iso file from a mksysb backup, using mkcd: Create CD/DVD image | mkcd -L -S -I /mksysb/bootable_mk -m /mksysb/my_mksysb_backup...

Undocumented AIX command lquerypv

lquerypv can read the PVID directly from the disk: # lquerypv -h /dev/hdisk0 80 10 00000080 00C4489D 5E6002A5 00000000 00000000 |..H.^`..........| # lspv hdisk0 00c4489d5e6002a5 rootvg active And also the...

How to Investigate a System Reboot

How to Investigate a System Reboot Technote (FAQ) Question Why did AIX shut down and reboot, or shut down and halt? Answer Introduction How does a system go down? How does a system boot up after going down? What system logs and commands can I use t...

AIX Full memory dump configure

#oslevel -s 6100-03-00-0000 #lsattr -El mem0 ent_mem_cap Â Â Â Â I/O memory entitlement in Kbytes Â Â Â Â Â False goodsize Â Â Â 4096 Amount of usable physical memory in Mbytes False size Â Â Â Â Â 4096 Total amount of physical memory in Mbytes Â Fa...

AIX PDF ALL

http://ps-2.kev009.com/basil.holloway/ALL%20PDF/

Firmware Assisted Dump sysdump

Firmware Assisted Dump Â Firmware Assisted Dump Â Â Technote (FAQ) Question This document describes the firmware assisted dump option for AIX system dumps. Answer The firmware assisted dump option was added in AIX 6.1 to improve the syste...

sysdumpdev Command

Purpose Displays and modifies the information and settings that are related to traditional system dump and firmware-assisted system dump. Syntax sysdumpdev -P { -p device | -s device } [ -q ] [ -i ] sysdumpdev [ -p device | -s device ] [ -q ] sys...

How to determine why your AIX oslevel is downlevel (and a script to help!)

How to determine why your AIX oslevel is downlevel (and a script to help!) o determine the oslevel on AIX, you can run the "oslevel -s" command.Â Â However, what "oslevel -s" reports doesn't always show the entire picture.Â Â The OS level reported...

Managing System Dump Devices sysdumpdev

Â Managing System Dump Devices Technote (FAQ) Question Managing System Dump Devices Answer Â This document discusses how to manage storage devices used by AIX to store a system dump in the event of a catastrophic operating system software failure. ...

Understanding dump devices sysdumpdev

If your system crashes due to an unexpected event, it core dumps. In fact a core dump can occur without a crash. However, for this article I assume that the system goes down due to a fatal event or via a user's forced action. The dump contains c...

Problem on resizing volume group on AIX 0516-1714, 0516-792, 0516-787, and 0516-404

Problem on resizing volume group on AIX 0516-1714, 0516-792, 0516-787, and 0516-404 Check MAX PPs per VG:Â Â Â Â 131072Â This is tested on AIX 6.1. When you try to add a disk to an existing VG, by doing: #extendvg vgdata hdisk20 you may receive the fo...

AIX 6.1: Extend VG 0516-1714 extendvg 0516-1254 extendvg

AIX 6.1: Extend VGÂ 0516-1714 extendvgÂ 0516-1254 extendvg Â AIX 6.1: Extend VG Â extendvg Â In case error wrt PPs: like: Â 0516-1254 extendvg: Changing the PVID in the ODM. 0516-1714 extendvg: The total number of partitions on the disks for this Â Â ...

SSH Essentials: Working with SSH Servers, Clients, and Keys

Introduction SSH is a secure protocol used as the primary means of connecting to Linux servers remotely. It provides a text-based interface by spawning a remote shell. After connecting, all commands you type in your local terminal are sent to the re...

O`Reilly`s CD bookshelf

https://docstore.mik.ua/orelly/bookshelfs.html Â The Java Reference Library, version 1.3 The Java Enterprise CD Bookshelf, Version 1.0 The Perl CD Bookshelf, version 1.0 ...

AIX NFS Version 4 configuration over Kerberos inter-realm setup

AIX NFS Version 4 configuration over Kerberos inter-realm setup Prashant Sodhiya and Sandeep PatilPublished on January 08, 2008 FacebookTwitterLinked InGoogle+E-mail this page 0 Since security is one of the key aspects and selling ...

Using Kerberos security with Server for NFS

Using Kerberos security with Server for NFS May 13, 2010 by JoseBarreto // 1 Comments Share 0 0 I’ll discuss how to configure a UNIX based NFS client to connect to Windows Server for NFS using Kerberos security with RPCSEC_GSS. Traditionally ...

Kerberos, Active Directory and AIX

Print 0 Â Â Kerberos, Active Directory and AIX Â May 2014 | by Mark Duszyk Â Print 0 Â Â You can find a lot and often conflicting information on the subject of using Kerberos with Active Directory to authenticate AIX clients. Recently...

Kerberos authentication configuration for AIX servers

Kerberos authentication configuration for AIX servers Kerberos authentication configuration for AIX servers This document describes how to configure Kerberos authentication on AIX 5.3, 6.1 and 7.1 working with Windows 2008 R2 Active Directory serve...

Software management in AIX

Software management inÂ AIX Software management inÂ AIX leave a comment Â» Fileset in AIX is named for softwares or dependencies. Group of filesets is called a package. For eg: bos.net is a package and bos.net.nfs.client is a fileset. BOS stands for Ba...

Configuring an AIX client with multiple Kerberos realms

Configuring an AIX client with multiple Kerberos realms Shruthi Sharma and Uma ChandoluPublished on October 20, 2009 FacebookTwitterLinked InGoogle+E-mail this page 2 Overview Kerberos is a network authentication protocol based on ...

Epoch & Unix Timestamp Conversion Tools

The current Unix epoch time isÂ 1529656113 Â Convert epoch to human readable date and vice versa Â [batch convert timestamps to human dates] GMT: Friday, 22 June 2018 07:40:23Your time zone: piÄtek, 22 czerwca 2018 09:40:23 GMT+02:00 DST Yr Mon D...

Do you Know These 5 Use of V$session View ?

Do you Know These 5 Use of V$session View ? Â Â V$session view is the base of all information related to current system status like which user, How many session, Which query and how long query is waiting etc. V$session is the first place when DBA s...

List of 10 Must Know Oracle Database Parameters for Database Administrator

List of 10 Must Know Oracle Database Parameters for Database Administrator Â Â Database Parameters are environment variables for a database which can change database behavior according to value of the parameter. These are input values which are tak...

What is OS Watcher Utility and How to use it for Database Troubleshooting ?

What is OS Watcher Utility and How to use it for Database Troubleshooting ? Â Â Oracle OS Watcher (OSWatcher) is a tool to help Remote DBA's to trouble shoot Database performance, Cluster reboot, node eviction, DB server reboot, DB instance Cr...

How to Analyze or Read OS Watcher Output in three easy steps -- With Example ?

How to Analyze or Read OS Watcher Output in three easy steps -- With Example ? Â Â I assume, you have got Oracle OS Watcher (OSWatcher) logs and Database Administrator is facing slow database performance or System hang kind of situations. So, Next ...

Top 4 Reasons for Node Reboot or Node Eviction in Real Application Cluster (RAC) Environment

Top 4 Reasons for Node Reboot or Node Eviction in Real Application Cluster (RAC) Environment Remote DBA usually face Node Reboots or Node Evictions in Real Application Cluster Environment. Node Reboot is performed by CRS to maintain consistency in Cl...

Configuration of AIX Fast Connect and SMBFS

Configuration of AIX Fast Connect and SMBFS Divya Vikas, Uma Chandolu, and Puneet MahajanPublished on December 18, 2007 Â Â The Common Internet File System (CIFS), also known as Server Message Block (SMB), is a standard remote file system ...

AIX WIKIS developerworks

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Power%20Systems/page/AIX

Useful AIX commands

A tcpdump Tutorial and Primer with Examples

Â A tcpdump Tutorial and Primer with Examples Created: January 4, 2004 | Updated: October 30, 2017 Â Why tcpdump? Basics Examples Basic Communication Specific Interface Raw Output View Find Traffic by IP Seeing Packet Contents with Hex Output ...

NTLMSSP, SPN and AIX CIFS

NTLMSSP, SPN and AIX CIFS Today I had busy time trying to figure out why SMB/CIFS Windows Server 2008 share cannot be mounted in AIX. AIX # mount -v cifs -n WindowsMachine.re.somewh.ere/sysaccount5/PassWd -o wrkgrp=SOMEGROUP,uid=11345,gid=22345,fm...

AIX: Script to get Total Disk Size

Single Server Total Disk Size (hdisk) 1 for i in `lspv |awk '{print $1}'`; do bootinfo -s $i; done |awk '{s+=$1} END {print s}' |while read x; do echo $x/1024|bc; done Total Disk Size (hdiskpower) 1 for i ...

AIX: Script to check if all paths are consistent and available

Single Server 1 lspath | awk '{print $1,$NF}' |sort |uniq -c (OR) 1 2 3 4 5 for x in `lspath |awk '{print $2}' |sort -k1.6n |uniq` do status=`lspath -l $x` echo $status |sed 's/\ /,/g' done ...

AIX: Script to create a file with commands to remove missing & failed paths

VIO Server Howto

1. Run IOS commands as root According to IBM you should never work as root on VIO servers. However, if you login as user padmin and type oem_setup_env you get the root credentials (without even been asked for a password). By default the ioscli c...

AIX: How to identify the program listening in the given port

METHOD I: # lsof âP ân âi :505 (for port 505) METHOD II: # netstat -Aan|grep 9404 f100060006952b98 tcp 0 0 *.9404 *.* LIST EN f100060006a90b98 tcp 0 0 *.19404 *.* LIST EN # rmsock f100060006952b98 tcpcb The socket 0x6952808 is being held by proccess ...

AIX: How to set automatic logoff (only for terminals)

Edit the /etc/security/.profile file to include an automatic logoff value for all users, as in the following example: TMOUT=600 ; TIMEOUT=600 ; export readonly TMOUT TIMEOUT The number 600, in this example, is in seconds, which is equal to 10 minutes...

AIX: How do you send an attachment via mail

Uuencode is the answer: uuencode [source-file] [filename].b64 mail -v -s âsubjectâ [email-address] For example: # uuencode /etc/motd motd.b64 mail -v -s âMessage of the dayâ email@hostname.comI use the .b64 extension which gets recognized by Winzip. ...

Tips I Picked up at the Power Systems Technical University

Tips I Picked up at the Power Systems Technical University Â November 2017 | by Jaqui Lynch Â Print 350 Â References In October, I attended and spoke at the Power Systems Technical University in New Orleans. While I was there I was able...

AIX: How to determine which application created the OS core file

# /usr/sbin/lquerypv -h /path/to/core 6b0 64 The output of this command is neat, clean and easy to read. Here is an example: # lquerypv -h core 6b0 64 000006B0 7FFFFFFF FFFFFFFF 7FFFFFFF FFFFFFFF â¦â¦â¦â¦â¦. 000006C0 00000000 000007D0 7FFFFFFF FFFFFFFF â¦â¦...

AIX: How to manage network tuning parameters

The no command is used to configure network tuning parameters in IBM AIX. The no command sets or displays current or next boot values for network tuning parameters. This command can also make permanent changes or defer changes until the next reboot. ...

IBM AIX commands you should not leave home without

As you know, AIX has a vast array of commands that enable you to do a multitude of tasks. Depending on what you need to accomplish, you use only a certain subset of these commands. These subsets differ from user to user and from need to need. However...

AIX Health Check basic

AIX Health Check Â To view overall performance. topas Option: -D Display all disks status -M Memory -P DIsplay all processes and sorted based on CPU utilization To view CPU utilization. sar -u 5 5 To view swap utilization. lsps -...

To do a quick check on the number of path present (does not mean all are Enabled] using for loop

To do a quick check on the number of path present (does not mean all are Enabled] using for loop. ===================================================== for i in `/usr/sbin/lspath | grep scsi | awkÂ '{print $2}' | sort |uniq ` ;Â do echo "$...

How to check dual path in AIX

How to check dual path in AIX Â How to verify if there is dual paths to SAN disks in AIX Operating System In this context we are using two important command which is lspath and dlmkmgr. lspath is the native AIX command which is included in the OS. d...

AIX - How to shutdown or reboot

AIX - How to shutdown or reboot Â To shutdown. shutdownÂ Â Â Â Â Â Â Â Â Â Â Â #shutdown after 60s shutdown nowÂ Â Â Â #shutdown now shutdown -FÂ Â Â Â Â Â Â #shutdown forcefully To reboot. shutdown -r Â Â Â Â #reboot - flush cache to disk shutdown -FrÂ Â Â Â Â Â ...

AIX - How to extend JFS filesystem

AIX - How to extend JFS filesystem Â JFS on AIX machines can be extend online if needed.To do so follow the steps below.1. Identify the filesystem you want to extend.Â Â Â Main thing we want to find out is on which logical volume it is using.==========...

AIX - How to unlock and reset user`s account

AIX - How to unlock and reset user's account Â Sometimes a user cannot remote login to an AIX machine might not due to just password expired issue. His/her account might have some other settings that prevent them from logging in. Below is a quic...

AIX - How to get IP and MAC address of ethernet adapter in AIX

AIX - How to get IP and MAC address of ethernet adapter in AIX Â Question : How to get MAC address of ethernet adapter in AIX? Answer : "netstat -v" command can be used to obtain MAC address of ethernet adapter in AIX. Search for "Hardware address" v...

AIX - How to get network speed and statistic of ethernet adapter in AIX

AIX - How to get network speed and statistic of ethernet adapter in AIX Â Question : How to get network speed of ethernet adapter in AIX. Answer : netstat command with option "v" can be used to get network speed of ethernet adapter in AIX. Look for m...

AIX - How to monitor CPU usage

AIX - How to monitor CPU usage Â In AX, topas can be used to monitor CPU usage of the system. Topas is similar to top in Linux though both are not the same. Question : How to monitor CPU usage in AIX? Answer : ps command can be used to report a snap...

AIX - How to monitor memory usage

AIX - How to monitor memory usage Â In AIX, ps command can be used to monitor status of processes. It will display information such as CPU usage, memory usage and etc of processes. To monitor memory usage of processes, RSS and %MEM column need to be ...

AIX - How to get Memory infomation

AIX - How to get Memory infomation Â Question : How to check memory size allocated to an AIX box if it is a lpar? Answer : lparstat command with option "i" can be used. Example : root@server # lparstat -i |grep -i memoryOnline Memory : 320 MBMaxim...

AIX - How to get CPU infomation

AIX - How to get CPU infomation Â Question : How to get CPU model, number of cores and speed on an AIX machine? Answer : Use prtconf to display system configuration information and look for information related to processor. Example : root@server #...

Script HW/SW AIX

#### pwd;clear;SERVER=`hostname`sleep 2;>/tmp/${SERVER};echo "##########################" >> /tmp/${SERVER};echo "DATE: " >> /tmp/${SERVER};echo "---------------------------------------------------------------------" >> /tmp/${SE...

Part 3, Monitoring your network packets and tuning the network

Optimizing AIX 7 network performance Part 3, Monitoring your network packets and tuning the network Martin Brown and Ken MilbergPublished on January 11, 2011 FacebookTwitterLinked InGoogle+E-mail this page 1 Content series: This ...

Part 2, NFS monitoring and tuning

Optimizing AIX 7 network performance Part 2, NFS monitoring and tuning Ken Milberg and Martin BrownPublished on November 30, 2010 FacebookTwitterLinked InGoogle+E-mail this page 1 Content series: This content is part of the serie...

Part 1, Network overview - Monitoring the hardware

Part 1, Network overview - Monitoring the hardware Martin Brown and Ken MilbergPublished on November 23, 2010 FacebookTwitterLinked InGoogle+E-mail this page 0 Content series: This content is part of the series:Optimizing AIX 7 n...

LVM: Shrink & extend a filesystem/volume

LVM: Shrink & extend a filesystem/volume # Tested on AIX 5.3# Note: jfs2 allows to shrink the filesystem, but a jfs filesystem's size cannot be reduced# In this example we are reducing /local/opt in order to free some space to be# ass...

AIX: Remove existing disk

AIX: Remove existing disk # Tested on AIX 6.1# Once disk is not used anymore (not assigned to a volume group or oracle ASM device, for# instance), we can remove it from system like this# Check beforelspvÂ Â Â Â Â hdisk0Â Â Â Â Â Â Â Â Â 00c6b1c54670e768Â Â Â ...

HMC: HMC and LPAR management commands

HMC: HMC and LPAR management commands # Tested on HMC v.6 / v.7# List of HMC commands, in case web based tool is not available, to# manage LPARs and HMC itself# HMC Management# -------------------------------------------------------------------...

LVM: Display basic information about Physical Volumes, Volume Groups and Logical Volumes

LVM: Display basic information about Physical Volumes, Volume Groups and Logical Volumes # Display information about a Physical Volume within a Volume Group# -------------------------------------------------------------------------------------...

LVM: Extend an existing Volume Group by adding a new disk

LVM: Extend an existing Volume Group by adding a new disk # Tested on AIX 6.1# First, verify the disk(s) to use on the VG with "lspv" or any other similar tool.# Ensure that disk is not being used/lspvÂ Â hdisk0Â Â Â Â Â Â Â Â Â 00f7136bab316a7aÂ Â Â Â Â Â Â Â ...

AIX: Configuring a network interface

AIX: Configuring a network interface # Tested on AIX 6.1# Given following interface (no matter if it is already configured or not):ifconfig en3Â Â en3: flags=1e080822,480

AIX POWERHA/HACMP: Basic commands

POWERHA/HACMP: Basic commands # IBM PowerHA (formerly HACMP) is IBM's solution for high-availability clusters on the AIX# Unix and Linux for IBM System p platforms and stands for High Availability Cluster# Multiprocessing.# PowerHA c...

Online Backups and Recovery in a Snap AIX

Online Backups and Recovery in a Snap Â December 2012 | by David Tansley Â Print 0 Â Â The ability to perform a JFS2 file system backup online means minimal downtime—and that’s a good thing in any system admin’s book. Using...

Monitoring Events with AIX Audit

Monitoring Events with AIX Audit Â August 2009 | by David Tansley Â Print 1 Â Â Â The AIX* built-in audit subsystem allows system administrators to monitor and record security-related events on the system. This utility provides a good footin...

Processes and Devices—It`s All About the Children

Processes and Devices—It’s All About the Children Â April 2013 | by David Tansley Â Print 3 Â Persistent Change Within the AIX (or Linux) world, if a process is spawned, a copy of the parent process is used and the child proc...

How to Easily Generate AIX Systems Management Reports

How to Easily Generate AIX Systems Management Reports Â August 2013 | by David Tansley Â Print 0 Â Â Generating system management information service (MIS) reports is a common task for system administrators. These reports are generated as co...

http://ibmsystemsmag.com/aix/administrator/backuprecovery/remote-sync/

Keeping Remote Files In Sync Â July 2014 | by David Tansley Â Remote Files In Sync Print 0 Â Â When you need to keep local files or directories in sync with a remote host, rsync utility ticks all the boxes. Rsync is the tool of choice when s...

Convert to Scalable Volume Groups

Convert to Scalable Volume Groups Â September 2014 | by David Tansley Â Print 0 Â Â You may need to add extra disks to a volume group (VG) due to pure business data growth or because you require additional testing environments. You might fac...

Many Choices for AIX File Integrity

Many Choices for AIX File Integrity Â November 2014 | by David Tansley Â Print 0 Â Â Recently, I was on a disaster recovery (DR) exercise that was going extremely well, until I had to restore a DB2 database. The restore failed due to a corru...

Tunneling With SSH to Your Destination

Tunneling With SSH to Your Destination Â January 2015 | by David Tansley Â Print 1 Â Figure 1 Figure 2 With SSH, you can create a tunnel (port forwarding) to transfer data that will be encrypted. Using this tunnel, you can then connect t...

Problems with NFS on an AIX Reboot? Then Go Single

Problems with NFS on an AIX Reboot? Then Go Single Â March 2015 | by David Tansley Â Print 0 Â Â A few weeks ago, I got called to review an issue where an AIX admin was cloning an AIX image onto a new LPAR. He said the reboot process was han...

Customizing a NIM Client Restore With a Post-Install Script

Customizing a NIM Client Restore With a Post-Install Script Â April 2015 | by David Tansley Â Print 0 Â Figure 1 - nim_post_install_script After you’ve performed a NIM recovery—whether via a mksysb or a RTE (runtime environme...

Restoring mksysb

Restoring mksysb Â May 2015 | by David Tansley Â Print 2 Â Â Every week, most AIX administrators take a weekly mksysb backup of rootvg. When it completes without problem, they generally shove it off to tape and forget about it. No need to wo...

Migrating AIX User Environments

Migrating AIX User Environments Â February 2016 | by David Tansley Â Print 0 Â Â Recently we had a requirement to build a new AIX environment in a remote office. Due to the unreliable network pipe between our main operations office and the r...

Using Shell Redirection: All About the Here-Doc

Using Shell Redirection: All About the Here-Doc Â June 2016 | by David Tansley Â Print 1 Â Â When gathering information from remote AIX hosts using SSH (Secure Shell), it will definitely make your life a lot easier to write the commands with...

Control Your Logs AIX

Control Your Logs Â August 2014 | by David Tansley Â Print 0 Â Â Every AIX system generates log files, including those from third-party applications and admin scripts. If you don’t keep on top of log file maintenance, it can become a m...

Removing Failed or Missing Paths

Removing Failed or Missing Paths Â December 2014 | by David Tansley Â Print 1 Â Â When changing storage mapping, you’ll find yourself with failed or missing disk paths on your AIX SAN. Failed paths are commonly due to a change that&rsq...

IBM AIX multipath I/O (MPIO) resiliency and problem determination

IBM AIX multipath I/O (MPIO) resiliency and problem determination Using the new features of the IBM AIX MPIO lsmpio command for storage area network (SAN) fabric problem determination Gary DomrowPublished on February 19, 2018 FacebookTwitterL...

https://www.ibm.com/developerworks/learn/aix/index.html

https://www.ibm.com/developerworks/learn/aix/index.html Â

HOWTO: Copy a filesystem on AIX

#!/usr/bin/ksh cmd=$0 old=$1 new=$2 if [ $# != 2 ] then Â Â echo Syntax: ${cmd} "" "" Â Â exit 1 fi # since the directory names might be entered as relative to current directory # change to each of the direct...

Getting list users and groups in AIX

Run the following command to get the list of users and associated groups in AIX environment $ lsuser ALL

How to setup an user in AIX

Follow the below steps to create a user in AIX and assign to a group. Step 1: Create a user mkuser user-name Â Step 2: Create a group mkgroup group-name Â Step 3: Create a home directory mkdir /home/users/user-name Â Step 4: Provide permissions to ho...

Finding password rules in AIX

In AIX 5.2, following file holds the password configuration /etc/security/user

Unlock User ID in IBM AIX

AIX Version: 5.3.0.0 Note: Required root or sudo access to perform this function. To unlock an user that’s locked from several unsuccessful login attempts, follow the steps below. Replace with userid that needs to be unlocked in ...

Backing up your VIOS configuration with viosbr.

After applying Fix Pack to my VIOS 2.1 server, I thought I’d try out the new viosbr command. $ ioslevel 1.2.10-FP-22 The man page for viosbr states that this command can be used to backup and restore the virtual I/O server configuration. ...

IVM and VLAN Tagging

IVM and VLAN Tagging cggibbo |Nov 8 2011| Comments (9) | Visits (39247) 1 I was working with a customer recently on a Power Blade that was running the Integrated Virtualisation Manager (IVM). They’d installed a VIO partition onto the Blade and ...

How to check VLAN ID number on AIX?

To check VLAN ID on AIX you can issue the command entstat filtering the result as the follow: # entstat -d en0 | grep 'Port VLAN ID' Port VLAN ID: 800 How to check VLAN-ID with command on LPAR for know information or something!! Serv01:ro...

How to deal with performance monitoring in AIX ?

To display top 10 highly utilized files under /var FS:Â find /var âxdev âls|sort +6rn|head Â To list the top ten users of paging space in IBM AIX:Â svmon -Pgt 10 To list the top ten users of realmem in IBM AIX:Â Â svmon -Put 10 To see the memory us...

Tuning AIX Network Performance

By default, the network tunables on an AIX system aren’t set optimally for anything above a 100 MB network. Given that most customers are running GB or 10 GB networks, the first step to improving network performance is to set some basic tunabl...

Trouble Shooting AIX Networking

Â TroubleShooting AIX Â System Reporting wrong oslevel: Â Network Â 1. Check the number of network interfaces and their status: # lsdev -CH | grep en ent0 available 10-68 3Com 3C905-TX-IBM fast Etherlink XL NIC ent1 defined 10-80 IBM PCI Ethernet Ada...

AIX check the HBA status

The P5/6/7 hardware loaded with AIX. How to check the FC HBA status? This command lists all devices available in AIX system. #lsdev Among all devices, look for FC HBA adapter by using below command. #lsdev âCc adapter |grep fcs* If the HBA’s l...

Manually Editing /etc/filesystems Can Cause Issues

As an AIX administrator, editing files directly is part of the course. However, some system files require a bit of caution when editing. Let’s look at one example, the /etc/filesystems. When you create a file system, the underlying logical volu...

Part 2, Detailed diagnosis and troubleshooting

Network problem determination: AIX tools for a system administrator Part 2, Detailed diagnosis and troubleshooting This article provides you with a set of commands available on IBM AIXÂ®, many of which are also available on other flavors of UNIXÂ®, tha...

Part 1, The basics of network troubleshooting

Network problem determination: AIX tools for a system administrator Part 1, The basics of network troubleshooting As an IBM AIXÂ® systems administrator, it's inevitable that at some point in your role you will encounter a problem that's link...

10 AIX Commands to Add to Your Toolbox

Many UNIX commands work across the spectrum of UNIX flavors—but there are specific commands that are geared specifically for AIX. Learning these is essential to being a successful AIX systems administrator. This list will focus on commands that...

Troubleshooting Starts With Understanding Your Physical Disks` Attributes

Any disk—or for that matter physical volume (PV) or hdisk—you might have most likely has some form of data on it. Reviewing disk attributes can reveal much, and not just in terms of managed storage, such as the logical volume manager (LVM...

Backup and Restore With AIX

While there are some strong third-party tools available to you for backup and restore purposes on the AIX OS, don't be afraid of the standard AIX toolset to archive your data. Most articles on backing up AIX partitions approach the subject tend ...

How To Mirror Your Root Disk On AIX (a.k.a. rootvg)

Mirroring rootvg: The commands though this is a short process anyway..but anyway.. actual values used in my example, change those to suit your environment Sponsored Links lspv in my example, hdisk0 is rootvg, hdisk1 is not in use lsvg -l rootvg comp...

How to mirror the rootvg in AIX?

How to mirror the rootvg in AIX? This procedure is to assume the rootvg havingÂ hdisk0Â and we need to take a mirror toÂ hdisk1.Â Ground work: Â lspvÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â --> find out the none disk on the server for the mirroring. b...

Mirroring the rootvg Volume Group for AIX

Technote (FAQ) Question Mirroring the rootvg Volume Group for AIX Answer Â This document specifies the supported method for mirroring the rootvg volume group to provide high availability access of the AIX operating system. There are four steps requ...

Mirroring the rootvg Volume Group for AIX 4.1/4.2

The disks that constitute the boot drives for AIX, must be disks that are supported to boot on RS/6000 platforms. A machine and disk configuration may be queried to determine if that combination of machine and disk supports bootin...

Replacing a failed disk (rootvg)

This post will describe the replacement of a failed rootvg disk. In short the procedure is the following: 1. unmirrorvg rootvg hdisk0 (savebase -v) 2. reducevg rootvg hdisk0 3. rmdev -Rdl hdisk0 4. diag (safely remove hot swap device/drive), physical...

AIX rootvg Mirroring

Volume group Mirroring:- Volume group mirroring is the most essential which keeps the data into redundant way in-order to avoid possible data loss in case any hardware or disk failure. Moreover, mirroring technology has been called as RAID -1 level. ...

How To Mirror VG and Root VG

How To Mirror VG and Root VG There are steps involved through which administrator can mirror a VG and RootVg. Steps tp mirror a VG: Step 1: Extend the VG. # extendvg Step 2: mirror the VG. # mirrorvg <...

System Admin Mirrorvg without locking the volume group

When you run the mirrorvg command, you will (by default) lock the volume group it is run against. This way, you have no way of knowing what the status is of the sync process that occurs after mirrorvg has run the mklvcopy commands for all the logical...

LVM: Unmirror/Mirror "rootvg" Volume Group

Tested on AIX 5.3# UN-MIRRORING "rootvg"# ------------------------------------------------------------------------------------------# We are un-mirroring a "rootvg" VG distributed on "hdisk0" & "hdisk1" disks like this one# (we'll take "hdi...

Rootvg Mirroring in AIX

Server is having 1 hard disk (hdisk0) in which OS is installed. The procedure will give step by step guide to attach a new hard disk to a running AIX machine and configure root mirroring. #lspv hdisk0 0005e8d264d0ec83 root...