There is a drawback in Live partition Mobility .When there are fibre channel adapters in the frame laprs , always when mobility operation is performed the moving lpar is always using the first fibre channel adapter.
If you have more lpars in the frames it would be make your work worst ,fibre channel switch port can be saturated.
With...
Wednesday, 29 May 2013
Tuesday, 28 May 2013
Monday, 27 May 2013
Capped Mode Vs Uncapped Mode
Capped Mode
In capped mode the processing units given to a partition can not exceed the assigned processing units (entitled capacity) even though there may be resources in the shared pool.
Uncapped Mode
In uncapped mode the processing units can exceed the entitled capacity of the partition if enough resources are available in the shared...
Understanding Micro-Partitioning
Micro-Partitioning was introduced as a feature of the POWER5 processor-bad product line back in 2004, yet I still get a number of questions on a regular basis around implementing and understanding Micro-Partitioning. In this article, I'll try and paint a concise and clear picture of everything you need to know about Micro-Partitioning in the Power...
Thursday, 23 May 2013
How to exit system console from HMC?
Its quite often we ended up in giving wrong user name when it promptedHMC console for a lpar.
Instead closing the console use this tip to exit from the prompt.
Its the Key Combination of ~. (tilt+dot)
...
Tuesday, 21 May 2013
Upgrading the GPFS cluster on AIX
Upgrading the GPFS cluster on AIX
All the GPFS nodes should be upgrade at same time.
Make sure the Application is stopped fully.
Before starting with OS Upgrade all the GPFS file system should be unmounted. If there are any application process running, and those process using the GPFS file systems, we cannot unmount the GPFS file systems.
Before...
Monday, 20 May 2013
HOWTO determine installed Technology Level
Introduction
The new IBM methodology dictates two Technology Level (TL) releases per year. The first Technology Level includes hardware features, enablement, and software services. The second includes software features in the release, which means the second release is larger and more comprehensive. Finally, there is also now support for new hardware...
HOWTO determine the MAC address of a network interface
Introduction
Sometimes it can be useful to know the physical address of a network interface (MAC address), to perform some configuration and/or troubleshooting.
Find the MAC address
On the most of the systems this information can be retrieved using the ifconfig or the netstat commands but this is not true for IBM AIX.
To get the MAC address, use...
HOWTO Recreate boot logical volume (BLV)
Introduction
If a Boot Logical Volume (BLV) is corrupted, a machine will not boot. By example bad block in a disk might cause a corrupted BLV. This page threats how to resote that BLV.
Recreate boot logical volume
To fix this issue, boot the server in maintenance mode, from a CD ROM, a tape or a NIM if available.
The bootlists are set using the...
Get the HMC IP address from LPAR
Something you may need to access the HMC of a AIX system but if you don't remember the IP address and don't have an up to date documentation, this information can lost. This page give a small tip to retrieve the HMC IP address directly from the AIX system itself...
Saturday, 18 May 2013
Show which hdisk(s) each of your filesystems reside on for AIX
Here is a small script to map out which hdisk(s) each of your filesystems reside on for AIX:
#!/bin/ksh
for vg in `lsvg -o`; do
for fs in `lsvgfs $vg`; do
printf "%-22s" $fs;
...
System Hangs at c33 with an LFT - AIX
Question
System hangs at c33 with an LFT.
Answer
System Hangs at c33 with an LFT
c33 is configuring the console as a tty. Typically this occurs because the console is configured as a tty but has no tty. In this situation, when booting into service mode and executing an lscons, the console will show up as anlft. To verify that this is the...
rpc.mountd Will Not Start
Technote (FAQ)
rpc.mountd Will Not Start
Answer
Environment
AIX 4.3 and higher
Problem
rpc.mountdwill not start. The following error is found in theerrptoutput:
Solution
Fix loopback/localhost name resolution as follows:
Edit the/etc/hostsfile: 127.0.0.1 loopback localhost
->Save the file.
Edit the/etc/netsvc.conffile: hosts=local,bind4
->Save...
Using AIX Tools to Debug Network Problems
Question
Using AIX Tools to Debug Network Problems
Answer
This document discusses some standard AIX commands that can check for network connectivity or performance problems.
From time to time users may be unable to access servers via their client applications or they may experience performance problems. When application and system checks do...
How to Set Up sar AIX
How to Set Up sar
Error messages
Error messages regarding the sar command and data files include the following:
The following errors indicate that the data collection programs have not been set up to collect the data that sar reports. If you see either of the following errors, follow the procedure in the "How to set up sar data files" section...
Repairing File Systems with fsck in AIX V5 (LED 517 or 518)
Technote (FAQ)
Repairing File Systems with fsck in AIX V5 or V6 (LED 517 or 518)
Answer
This document covers the use of the fsck (file system check) command in Maintenance mode to repair inconsistencies in file systems. The procedure described is useful when file system corruption in the primary root file systems is suspected or, in...
Recovery from an LED 553 in AIX
Question
Recovery from an LED 553 in AIX
Answer
This document describes a procedure to attempt to recover from an IPL hang at LED 553.
About LED 553
Recovery procedure
Sample /etc/inittab file for AIX Versions 5 and 6
Sample /etc/environment file for AIX.
1) About LED 553:
An LED value of 553 is a checkpoint code displayed to indicate the...
